/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Fonts */
    --font-heading: 'Lora', serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.02);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.06), 0 10px 10px -5px rgba(0,0,0,0.03);
    --shadow-glow: 0 0 20px rgba(184, 91, 86, 0.1);

    /* Layout border-radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
}

/* Light Theme Variables - Claude Ivory & Terracotta */
html.light {
    --bg-primary: #FAF6F0;
    --bg-secondary: #F3ECE2;
    --bg-card: transparent;
    --bg-input: #FAF6F0;
    --border-color: rgba(206, 196, 180, 0.7);
    --border-subtle: rgba(206, 196, 180, 0.4);
    --border-hover: rgba(168, 155, 137, 1);
    
    --text-primary: #2C2924;
    --text-secondary: #6B645B;
    --text-muted: #9E9589;
    
    --accent-blue: #3B6280;
    --accent-violet: #C26761;
    --accent-emerald: #4E7A62;
    
    --accent-blue-soft: rgba(59, 98, 128, 0.08);
    --accent-violet-soft: rgba(194, 103, 97, 0.08);
    --accent-emerald-soft: rgba(78, 122, 98, 0.08);
    
    --nav-bg: rgba(250, 246, 240, 0.85);
    --nav-border: rgba(206, 196, 180, 0.7);
    --card-shadow: none;
    
    --modal-bg: rgba(250, 246, 240, 0.98);
    --modal-overlay: rgba(44, 41, 36, 0.35);
}

/* Dark Theme Variables - Cozy Dark Charcoal Coffee */
html.dark {
    --bg-primary: #181715;
    --bg-secondary: #211F1C;
    --bg-card: transparent;
    --bg-input: #181715;
    --border-color: rgba(64, 61, 56, 0.8);
    --border-subtle: rgba(64, 61, 56, 0.45);
    --border-hover: rgba(87, 83, 76, 1);
    
    --text-primary: #EBE5DA;
    --text-secondary: #A8A092;
    --text-muted: #787167;
    
    --accent-blue: #82A7C4;
    --accent-violet: #E39B96;
    --accent-emerald: #83B096;
    
    --accent-blue-soft: rgba(130, 167, 196, 0.12);
    --accent-violet-soft: rgba(227, 155, 150, 0.12);
    --accent-emerald-soft: rgba(131, 176, 150, 0.12);
    
    --nav-bg: rgba(24, 23, 21, 0.85);
    --nav-border: rgba(64, 61, 56, 0.8);
    --card-shadow: none;
    
    --modal-bg: rgba(24, 23, 21, 0.99);
    --modal-overlay: rgba(0, 0, 0, 0.75);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    outline: none;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-padding {
    padding-top: calc(var(--spacing-xl) / 2);
    padding-bottom: var(--spacing-xl);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 24px;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: transform var(--transition-normal), top var(--transition-normal);
}

.nav-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 12px 24px;
    background: var(--nav-bg);
    border: 1px solid var(--nav-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-full);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    transition: background var(--transition-normal), border var(--transition-normal), box-shadow var(--transition-normal);
}

/* Sticky Shrink Layout */
.header.scrolled {
    top: 12px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}



.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--accent-blue-soft);
}

.nav-link.active {
    color: var(--accent-blue);
    background: var(--accent-blue-soft);
    font-weight: 600;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.lang-toggle, .mobile-menu-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.lang-toggle:hover, .mobile-menu-toggle:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

.lang-text {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    font-family: var(--font-heading);
}

.mobile-menu-toggle {
    display: none;
}

.mobile-menu-toggle .close-icon {
    display: none;
}

.mobile-menu-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1040;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.mobile-menu-backdrop.active {
    display: block;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
}

.btn-primary:hover {
    background: var(--accent-violet);
    border-color: var(--accent-violet);
    color: var(--bg-primary);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    font-weight: 600;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-small svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.btn-small:hover svg {
    transform: translateX(4px);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg-accent {
    position: absolute;
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-blue-soft) 0%, transparent 70%);
    border-radius: var(--radius-full);
    z-index: -1;
    filter: blur(80px);
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

.hero-name-container {
    position: relative;
    display: inline-block;
    margin-bottom: 28px;
    margin-top: 16px;
}

.hero-greeting-prefix {
    position: absolute;
    top: -12px;
    left: 4px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-greeting-suffix {
    position: absolute;
    bottom: -12px;
    right: -32px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 6.5rem);
    letter-spacing: -0.03em;
    margin: 0;
    background: linear-gradient(135deg, var(--text-primary) 50%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Custom Load Animation (Option 4: Letter Spacing & Blur Reveal) */
.hero-name-container.animate-hero-name {
    opacity: 1;
    transform: none;
}

.hero-name-container.animate-hero-name .hero-title {
    opacity: 0;
    filter: blur(12px);
    letter-spacing: 0.08em;
    transform: scale(0.98);
    transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.4s,
                filter 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s,
                letter-spacing 1.5s cubic-bezier(0.16, 1, 0.3, 1) 0.4s,
                transform 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
}

.hero-name-container.animate-hero-name.revealed .hero-title {
    opacity: 1;
    filter: blur(0);
    letter-spacing: -0.03em;
    transform: scale(1);
}

.hero-name-container.animate-hero-name .hero-greeting-prefix {
    opacity: 0;
    filter: blur(4px);
    transform: translateY(-3px) scale(0.98);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s,
                filter 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s,
                transform 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.hero-name-container.animate-hero-name.revealed .hero-greeting-prefix {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
}

.hero-name-container.animate-hero-name .hero-greeting-suffix {
    opacity: 0;
    filter: blur(4px);
    transform: translateY(3px) scale(0.98);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s,
                filter 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s,
                transform 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s;
}

.hero-name-container.animate-hero-name.revealed .hero-greeting-suffix {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 640px;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.hero-illustration-container {
    position: relative;
    width: 320px;
    height: 320px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.hero-illustration-container:hover {
    transform: translateY(-6px) rotate(0.5deg);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: var(--border-hover);
}

.hero-illustration {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    animation: bounce 2s infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.8rem;
    gap: 4px;
}

.scroll-down svg {
    width: 20px;
    height: 20px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
    40% { transform: translate(-50%, -10px); }
    60% { transform: translate(-50%, -5px); }
}

/* ==========================================================================
   SECTION HEADER COMMON
   ========================================================================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg) auto;
}

.section-tag {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    display: inline-block;
    margin-bottom: 12px;
    opacity: 0.75;
}

.section-title {
    font-size: 2.25rem;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    border-color: var(--border-hover);
}

.project-img-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-secondary);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

.project-overlay {
    display: none;
}

.project-more-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color var(--transition-normal);
    padding-top: 16px;
}

.project-card:hover .project-more-link {
    color: var(--accent-blue);
}

.project-more-link svg,
.project-more-link i {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-normal);
}

.project-card:hover .project-more-link svg,
.project-card:hover .project-more-link i {
    transform: translateX(4px);
}

.project-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.project-title-text {
    font-size: 1.35rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.project-summary {
    font-size: 0.925rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.65;
    flex-grow: 1;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech-tags span {
    font-size: 0.72rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* ==========================================================================
   CV / TIMELINE SECTION
   ========================================================================== */
.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-sm) 0;
}

.timeline-line {
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 54px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 6px;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: var(--bg-primary);
    border: 4px solid var(--accent-blue);
    box-shadow: 0 0 0 4px var(--bg-primary);
    transition: transform var(--transition-fast), background-color var(--transition-fast);
    z-index: 2;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.25);
    background-color: var(--accent-violet);
}

.timeline-time {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border-color var(--transition-normal);
    min-height: unset;
}

.timeline-item:hover .timeline-content {
    transform: translateX(4px);
    border-color: var(--border-hover);
}

.timeline-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 6px;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.3;
}

.timeline-org {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.timeline-loc {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 10px;
    margin-top: 2px;
}

.timeline-text {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.skill-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.skill-category-card:hover {
    border-color: var(--border-hover);
}

.skill-cat-header {
    margin-bottom: 24px;
}
.skill-cat-title {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.skill-cat-number {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-blue);
    opacity: 0.8;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.skill-list li {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.skill-concept {
    font-size: 0.725rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: block;
}

.skill-desc {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.45;
    display: block;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-grid {
    display: flex;
    justify-content: center;
}

.contact-info-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 3.5rem;
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-info-desc {
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--text-secondary);
    margin-bottom: 32px;
    text-align: center;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
    width: 100%;
    max-width: 100%;
}

.contact-method-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.contact-method-item:hover {
    background: var(--bg-secondary);
}

.contact-method-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--accent-blue-soft);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-method-icon svg {
    width: 20px;
    height: 20px;
}

.contact-method-text {
    display: flex;
    flex-direction: column;
}

.contact-method-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-method-val {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-socials {
    display: flex;
    gap: 12px;
}

.contact-socials a {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.contact-socials a:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.contact-socials a svg {
    width: 18px;
    height: 18px;
}

.contact-footer-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 12px;
}

.contact-footer-location svg {
    width: 14px;
    height: 14px;
    stroke-width: 2px;
}

/* Form Styles */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    font-family: inherit;
    font-size: 0.925rem;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-soft);
}

.form-group.invalid input, .form-group.invalid textarea {
    border-color: #ef4444;
}

.form-group.invalid input:focus, .form-group.invalid textarea:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-msg {
    font-size: 0.75rem;
    color: #ef4444;
    display: none;
}

.form-group.invalid .error-msg {
    display: block;
}

.btn-submit {
    align-self: flex-start;
}

.btn-send-icon {
    width: 16px;
    height: 16px;
}

.form-status {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 12px;
    border-radius: var(--radius-sm);
    display: none;
    text-align: center;
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    background: var(--bg-secondary);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.loop-back-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 8px;
}

.loop-back-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--accent-blue);
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: all var(--transition-fast) ease;
}

.loop-icon {
    width: 36px;
    height: 36px;
    padding: 9px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background: var(--bg-primary);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--card-shadow);
}

.loop-back-btn:hover {
    color: var(--accent-violet);
}

.loop-back-btn:hover .loop-icon {
    transform: rotate(360deg) scale(1.1);
    border-color: var(--accent-violet);
    box-shadow: 0 0 12px var(--accent-violet-soft);
}

.loop-text {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.loop-back-btn:hover .loop-text {
    opacity: 1;
}

/* ==========================================================================
   PROJECT MODAL / POPUP
   ========================================================================== */
.project-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.project-modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--modal-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-wrapper {
    position: relative;
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    box-shadow: var(--shadow-xl);
    z-index: 10;
    overflow-y: auto;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-normal);
    
    /* Hide scrollbar but keep functionality */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.modal-wrapper::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.project-modal.active .modal-wrapper {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 32px;
    right: 32px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    border-color: var(--border-hover);
    transform: scale(1.05);
}

.modal-body {
    padding: 52px 40px 40px 40px;
}

/* Modal Content Styles */
.modal-project-header {
    margin-bottom: 24px;
    margin-top: 12px;
}

.modal-project-cat {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: inline-block;
    margin-bottom: 8px;
}

.modal-project-title {
    font-size: 2.25rem;
    letter-spacing: -0.02em;
}

.modal-project-banner {
    width: 100%;
    aspect-ratio: 16 / 6;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.modal-banner-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.modal-banner-icon svg {
    width: 28px;
    height: 28px;
}

.modal-project-content {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 40px;
}

.modal-text-section {
    min-width: 0;
}

.modal-text-section h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.modal-text-section p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.modal-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.modal-info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.modal-info-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-info-val {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.modal-tech-pills span {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.modal-project-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
    width: 100%;
}

.modal-project-links .btn {
    width: 100%;
    justify-content: center;
}

.modal-project-links .btn svg {
    width: 16px;
    height: 16px;
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */
.animate-fade {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity var(--transition-slow) ease, transform var(--transition-slow) ease;
}

.animate-fade.revealed {
    opacity: 1;
    transform: translateY(0);
}

.animate-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow) ease, transform var(--transition-slow) ease;
}

.animate-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Cascade animation delays */
.animate-fade:nth-child(1) { transition-delay: 0.1s; }
.animate-fade:nth-child(2) { transition-delay: 0.2s; }
.animate-fade:nth-child(3) { transition-delay: 0.3s; }
.animate-fade:nth-child(4) { transition-delay: 0.4s; }
.animate-fade:nth-child(5) { transition-delay: 0.5s; }

/* ==========================================================================
   RESPONSIVE LAYOUTS
   ========================================================================== */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 60px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-fullname {
        font-size: 1.15rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .header {
        top: 0;
    }
    
    .nav-container {
        border-radius: 0;
        border: none;
        border-bottom: none;
        width: 100%;
        max-width: 100%;
        padding: 14px var(--spacing-md);
        box-shadow: none;
        background: var(--bg-primary);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
    
    .header.scrolled {
        top: 0;
    }

    /* Shrink all header action buttons on mobile */
    .nav-actions {
        gap: 6px;
    }

    .lang-toggle,
    .mobile-menu-toggle {
        width: 34px;
        height: 34px;
    }

    .lang-text {
        font-size: 0.7rem;
        letter-spacing: 0.04em;
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1100;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--modal-bg);
        border-left: 1px solid var(--border-color);
        box-shadow: var(--shadow-xl);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 24px;
        z-index: 1050;
        transition: right var(--transition-normal);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.15rem;
    }
    
    /* Reveal Close Icon */
    .nav-menu.active ~ .nav-actions .mobile-menu-toggle .menu-icon {
        display: none;
    }
    
    .nav-menu.active ~ .nav-actions .mobile-menu-toggle .close-icon {
        display: block;
    }
}

@media (max-width: 768px) {
    .contact-methods {
        grid-template-columns: 1fr;
        max-width: 340px;
    }

    .scroll-down {
        bottom: 80px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: left;
        align-items: flex-start;
    }
    
    .hero-content {
        align-items: flex-start;
        order: 2;
    }
    
    .hero-cta {
        justify-content: flex-start;
        width: 100%;
    }
    
    .hero-image-wrapper {
        order: 1;
    }
    
    .hero-description {
        max-width: 100%;
    }
    
    .avatar-card {
        width: 240px;
        height: 240px;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    

    .modal-project-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .modal-project-title {
        font-size: 1.75rem;
    }

    .modal-body {
        padding: 64px 24px 24px 24px;
    }

    .modal-close {
        top: 16px;
        right: 16px;
        width: 36px;
        height: 36px;
    }

    .modal-project-links {
        margin-top: 20px;
    }

    .modal-project-links .btn {
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    .modal-project-links .btn svg {
        width: 14px;
        height: 14px;
    }

    .contact-info-panel {
        padding: 2.5rem 2rem;
    }

    .contact-footer-location {
        align-self: flex-start;
        margin-left: 8px;
    }

    .section-header {
        text-align: left;
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.75rem;
    }

    .hero-cta {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        width: 100%;
    }
    
    .hero-cta .btn {
        flex: 1;
        min-width: 130px;
        font-size: 0.85rem;
        padding: 10px 16px;
        white-space: nowrap;
        justify-content: center;
    }
    
    .contact-info-panel {
        padding: 2rem 1.25rem;
    }
}

.side-nav {
    display: none;
}

/* Responsive Lang Toggle */
.header-lang-toggle {
    display: flex;
}

.wheel-lang-toggle {
    display: none !important;
}

@media (max-width: 1024px) {
    .mobile-menu-toggle {
        display: none !important;
    }

    .header-lang-toggle {
        display: none !important;
    }

    .wheel-lang-toggle {
        display: flex !important;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        margin: 0;
        z-index: 52;
        pointer-events: auto;
        width: 32px;
        height: 32px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }

    .wheel-lang-toggle:hover {
        transform: translate(-50%, -50%) scale(1.08);
    }

    .side-nav {
        display: block;
        position: fixed;
        left: 20px;
        bottom: 20px;
        width: 250px;
        height: 60px;
        z-index: 50;
        pointer-events: none;
        opacity: 0.85;
        transition: opacity var(--transition-normal) ease;
    }

    .side-nav.at-top {
        opacity: 0.15;
    }

    .side-nav:hover,
    .side-nav:has(.side-nav-item:hover) {
        opacity: 1.0;
    }

    .side-nav-wheel-container {
        position: absolute;
        left: 0;
        top: 0;
        width: 60px;
        height: 60px;
        pointer-events: none;
    }

    .side-nav-wheel {
        position: absolute;
        left: 0;
        top: 0;
        width: 60px;
        height: 60px;
        border-radius: 50%;
        border: 1.5px solid var(--border-color);
        background: var(--bg-card);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        pointer-events: none;
        transform: rotate(0deg);
        transition: transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
        transform-origin: center center;
    }

    /* Inner loop line representing cycles */
    .side-nav-wheel::after {
        content: '';
        position: absolute;
        inset: 12px;
        border-radius: 50%;
        border: 1px dashed var(--border-color);
        opacity: 0.5;
    }

    .side-nav-item {
        position: absolute;
        left: 50%;
        top: 50%;
        width: 24px;
        height: 24px;
        margin-left: -12px;
        margin-top: -12px;
        display: flex;
        align-items: center;
        justify-content: center;
        pointer-events: auto;
        text-decoration: none;
        /* Position along circumference and maintain upright orientation */
        transform: rotate(var(--angle)) translateX(30px) rotate(calc(-1 * var(--angle) - var(--wheel-rotation, 0deg)));
        transition: transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .side-nav-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--text-muted);
        opacity: 0.5;
        transition: all 0.4s ease;
        position: relative;
        z-index: 1;
        flex-shrink: 0;
    }

    .side-nav-item.active .side-nav-dot {
        width: 10px;
        height: 10px;
        background: var(--accent-blue);
        opacity: 1;
        box-shadow: 0 0 0 4px var(--accent-blue-soft);
    }

    .side-nav-label {
        position: absolute;
        left: 20px;
        top: 50%;
        transform: translateY(-50%) translateX(-8px);
        font-family: var(--font-heading);
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        color: var(--accent-blue);
        background: var(--accent-blue-soft);
        border: none;
        padding: 4px 12px;
        border-radius: var(--radius-full);
        white-space: nowrap;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.4s ease, transform 0.4s ease;
    }

    .side-nav-item.active .side-nav-label {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

/* ==========================================================================
   HUMAN-CENTRIC CUSTOM GRAPHICS & CSS MOCKUPS
   ========================================================================== */

/* Monogram Avatar Fallback */
.avatar-fallback {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--border-color) 100%);
    overflow: hidden;
}

.avatar-initials {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 5rem;
    letter-spacing: -0.05em;
    color: var(--accent-violet);
    z-index: 2;
    text-shadow: 0 4px 12px rgba(46, 43, 38, 0.08);
}

.avatar-glow-ring {
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, var(--accent-violet-soft) 0%, transparent 70%);
    animation: pulseGlow 4s ease-in-out infinite alternate;
    z-index: 1;
}

@keyframes pulseGlow {
    0% { transform: scale(0.9); opacity: 0.5; }
    100% { transform: scale(1.3); opacity: 1; }
}

/* Minimalist CSS Visual Container */
.project-visual-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.visual-inner {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 24px;
    transition: transform var(--transition-slow);
}

.project-card:hover .visual-inner {
    transform: scale(1.02);
}


/* 1. Aura: Somatic Breathing Graphic */
.visual-aura {
    background: linear-gradient(135deg, var(--accent-emerald-soft) 0%, var(--accent-blue-soft) 100%);
}

.visual-aura-breathing {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, var(--bg-primary) 0%, transparent 80%);
    border: 2px dashed var(--accent-emerald);
    position: relative;
    transform: scale(1);
    box-shadow: 0 0 10px var(--accent-emerald-soft);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.visual-aura-breathing::after {
    content: '';
    position: absolute;
    inset: -12px;
    border-radius: var(--radius-full);
    border: 1px solid var(--accent-blue);
    opacity: 0.2;
    transform: scale(1.05);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.project-card:hover .visual-aura-breathing,
.modal-project-banner:hover .visual-aura-breathing {
    border-color: var(--accent-blue);
    animation: growAndGlow 4s ease-in-out infinite;
}

.project-card:hover .visual-aura-breathing::after,
.modal-project-banner:hover .visual-aura-breathing::after {
    animation: breatheOuter 4s ease-in-out infinite;
}

.breathing-ring {
    position: absolute;
    inset: 0;
    border: 1px solid var(--accent-emerald);
    border-radius: var(--radius-full);
    opacity: 0;
    pointer-events: none;
}

.project-card:hover .breathing-ring.ring-1,
.modal-project-banner:hover .breathing-ring.ring-1 {
    animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite;
}

.project-card:hover .breathing-ring.ring-2,
.modal-project-banner:hover .breathing-ring.ring-2 {
    animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite;
    animation-delay: 0.6s;
}

.project-card:hover .breathing-ring.ring-3,
.modal-project-banner:hover .breathing-ring.ring-3 {
    animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite;
    animation-delay: 1.2s;
}

@keyframes ripple {
    0% {
        transform: scale(1);
        opacity: 0.8;
        box-shadow: 0 0 4px var(--accent-emerald-soft);
    }
    100% {
        transform: scale(2.2);
        opacity: 0;
        box-shadow: 0 0 12px transparent;
    }
}

@keyframes growAndGlow {
    0%, 100% { transform: scale(0.9); box-shadow: 0 0 10px var(--accent-emerald-soft); }
    50% { transform: scale(1.15); box-shadow: 0 0 25px rgba(77, 130, 98, 0.3); border-color: var(--accent-blue); }
}

@keyframes breatheOuter {
    0%, 100% { transform: scale(0.9); opacity: 0.2; }
    50% { transform: scale(1.1); opacity: 0.6; }
}

/* 2. STTFL: Conversation UI layout */
.visual-sosyal {
    background: linear-gradient(135deg, var(--accent-blue-soft) 0%, var(--accent-violet-soft) 100%);
}

.visual-forum-header {
    position: absolute;
    top: 24px;
    left: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 80%;
}

.visual-avatar-dot {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    background: var(--accent-blue);
}

.visual-header-line {
    height: 6px;
    width: 60px;
    border-radius: var(--radius-full);
    background: var(--border-hover);
    opacity: 0.6;
}

.visual-forum-box {
    position: absolute;
    width: 75%;
    left: 24px;
    top: 52px;
    z-index: 2;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s;
}

.visual-forum-box.reply {
    width: 68%;
    left: 48px;
    top: 108px;
    z-index: 1;
    opacity: 0.4;
    transform: translateY(12px) scale(0.95);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.5s;
}

.project-card:hover .visual-forum-box,
.modal-project-banner:hover .visual-forum-box {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.project-card:hover .visual-forum-box.reply,
.modal-project-banner:hover .visual-forum-box.reply {
    opacity: 1;
    transform: translateY(0) scale(1);
    box-shadow: var(--shadow-sm);
}

.visual-content-line {
    height: 5px;
    width: 100%;
    border-radius: var(--radius-full);
    background: var(--text-muted);
    opacity: 0.3;
}

.visual-content-line.short {
    width: 65%;
}

/* 3. YazarEser: Flashcards Matching */
.visual-yazareser {
    background: linear-gradient(135deg, var(--accent-violet-soft) 0%, var(--accent-emerald-soft) 100%);
}

.visual-flashcard {
    width: 140px;
    height: 80px;
    perspective: 1000px;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: rotate(-3deg) rotateY(0deg);
}

.project-card:hover .visual-flashcard,
.modal-project-banner:hover .visual-flashcard {
    transform: rotate(2deg) rotateY(180deg) scale(1.05);
}

.visual-card-front,
.visual-card-back {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 16px;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.visual-card-front {
    background: var(--bg-card);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-violet);
    letter-spacing: -0.01em;
}

.visual-card-back {
    background: var(--bg-card);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-emerald);
    letter-spacing: -0.01em;
    transform: rotateY(180deg);
}

/* 4. EkoTakip Pro: Climate Tech & Carbon Portal */
.visual-ekotakippro {
    background: linear-gradient(135deg, #062c1e 0%, #0f5132 50%, #042014 100%);
}

.visual-ekotakip-scene {
    position: relative;
    width: 110px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-eco-ring {
    position: absolute;
    border-radius: var(--radius-full);
    border: 1.5px solid rgba(16, 185, 129, 0.3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: border-color var(--transition-normal), opacity var(--transition-normal);
}

.visual-eco-ring.ring-outer {
    width: 100px;
    height: 100px;
    border-color: rgba(16, 185, 129, 0.2);
    animation: ecoPulseOuter 3s ease-in-out infinite;
}

.visual-eco-ring.ring-mid {
    width: 68px;
    height: 68px;
    border-color: rgba(52, 211, 153, 0.4);
    animation: ecoPulseMid 3s ease-in-out infinite 0.5s;
}

.project-card:hover .visual-eco-ring.ring-outer,
.modal-project-banner:hover .visual-eco-ring.ring-outer {
    border-color: rgba(52, 211, 153, 0.6);
}

.project-card:hover .visual-eco-ring.ring-mid,
.modal-project-banner:hover .visual-eco-ring.ring-mid {
    border-color: rgba(52, 211, 153, 0.8);
}

@keyframes ecoPulseOuter {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
}

@keyframes ecoPulseMid {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.7; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.visual-eco-center {
    position: relative;
    z-index: 3;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, rgba(16, 185, 129, 0.3) 0%, rgba(16, 185, 129, 0.08) 100%);
    border: 1.5px solid rgba(52, 211, 153, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow var(--transition-normal), background var(--transition-normal);
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.25);
}

.project-card:hover .visual-eco-center,
.modal-project-banner:hover .visual-eco-center {
    box-shadow: 0 0 28px rgba(52, 211, 153, 0.6);
    background: radial-gradient(circle, rgba(52, 211, 153, 0.4) 0%, rgba(52, 211, 153, 0.15) 100%);
}

.visual-leaf-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.visual-eco-badge {
    position: absolute;
    bottom: -6px;
    padding: 2px 8px;
    background: rgba(16, 185, 129, 0.25);
    border: 1px solid rgba(52, 211, 153, 0.4);
    border-radius: 12px;
    font-size: 0.6rem;
    font-weight: 700;
    color: #34d399;
    letter-spacing: 0.05em;
    backdrop-filter: blur(4px);
    z-index: 5;
}

/* 5. Adnet: Carbon Emission Portal */
.visual-adnet {
    background: linear-gradient(135deg, #0d2b1a 0%, #14532d 50%, #052e16 100%);
}

.visual-carbon-scene {
    position: relative;
    width: 110px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-carbon-ring {
    position: absolute;
    border-radius: var(--radius-full);
    border: 1.5px solid rgba(74, 222, 128, 0.25);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: border-color var(--transition-normal), opacity var(--transition-normal);
}

.visual-carbon-ring.ring-outer {
    width: 100px;
    height: 100px;
    border-color: rgba(74, 222, 128, 0.15);
    animation: carbonPulseOuter 3s ease-in-out infinite;
}

.visual-carbon-ring.ring-mid {
    width: 68px;
    height: 68px;
    border-color: rgba(74, 222, 128, 0.3);
    animation: carbonPulseMid 3s ease-in-out infinite 0.5s;
}

.project-card:hover .visual-carbon-ring.ring-outer,
.modal-project-banner:hover .visual-carbon-ring.ring-outer {
    border-color: rgba(74, 222, 128, 0.5);
}

.project-card:hover .visual-carbon-ring.ring-mid,
.modal-project-banner:hover .visual-carbon-ring.ring-mid {
    border-color: rgba(74, 222, 128, 0.7);
}

@keyframes carbonPulseOuter {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
}

@keyframes carbonPulseMid {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.7; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.visual-carbon-center {
    position: relative;
    z-index: 3;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, rgba(74, 222, 128, 0.2) 0%, rgba(74, 222, 128, 0.05) 100%);
    border: 1.5px solid rgba(74, 222, 128, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow var(--transition-normal), background var(--transition-normal);
    box-shadow: 0 0 12px rgba(74, 222, 128, 0.2);
}

.project-card:hover .visual-carbon-center,
.modal-project-banner:hover .visual-carbon-center {
    box-shadow: 0 0 24px rgba(74, 222, 128, 0.5);
    background: radial-gradient(circle, rgba(74, 222, 128, 0.35) 0%, rgba(74, 222, 128, 0.1) 100%);
}

.visual-co2-label {
    font-size: 0.62rem;
    font-weight: 800;
    color: #4ade80;
    letter-spacing: 0.02em;
    font-family: var(--font-heading);
    line-height: 1;
    text-shadow: 0 0 6px rgba(74, 222, 128, 0.6);
}

.visual-carbon-leaf {
    position: absolute;
    width: 10px;
    height: 14px;
    border-radius: 50% 50% 50% 0;
    background: linear-gradient(135deg, #4ade80, #16a34a);
    opacity: 0.7;
    z-index: 4;
    top: 50%;
    left: 50%;
    transform-origin: center center;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    box-shadow: 0 0 6px rgba(74, 222, 128, 0.3);
}

.visual-carbon-leaf.leaf-1 {
    transform: translate(-50%, -50%) rotate(0deg) translateY(-48px) rotate(-45deg);
    animation: leafFloat 3s ease-in-out infinite;
}

.visual-carbon-leaf.leaf-2 {
    transform: translate(-50%, -50%) rotate(120deg) translateY(-48px) rotate(-45deg);
    animation: leafFloat 3s ease-in-out infinite 1s;
}

.visual-carbon-leaf.leaf-3 {
    transform: translate(-50%, -50%) rotate(240deg) translateY(-48px) rotate(-45deg);
    animation: leafFloat 3s ease-in-out infinite 2s;
}

.project-card:hover .visual-carbon-leaf,
.modal-project-banner:hover .visual-carbon-leaf {
    opacity: 1;
    filter: brightness(1.3);
}

@keyframes leafFloat {
    0%, 100% { filter: brightness(0.9); }
    50% { filter: brightness(1.3) drop-shadow(0 0 4px rgba(74, 222, 128, 0.5)); }
}

/* ==========================================================================
   CONTACT FALLBACK MODAL STYLES
   ========================================================================== */
.modal-contact-fallback {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 500px;
    margin: 0 auto;
}

.modal-fallback-title {
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--accent-violet);
}

.modal-fallback-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.message-preview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-family: var(--font-body);
}

.preview-item {
    font-size: 0.9rem;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 8px;
    color: var(--text-primary);
}

.preview-item strong {
    color: var(--text-secondary);
}

.preview-body {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.9rem;
}

.preview-body strong {
    color: var(--text-secondary);
}

.preview-body pre {
    white-space: pre-wrap;
    word-break: break-all;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    max-height: 150px;
    overflow-y: auto;
}

.modal-fallback-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.modal-fallback-actions .btn {
    flex: 1;
}

.modal-fallback-footer {
    text-align: center;
    margin-top: 12px;
}

.btn-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    background: none;
    border: none;
    text-decoration: underline;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.btn-link:hover {
    color: var(--text-primary);
}

@media (max-width: 576px) {
    .modal-fallback-actions {
        flex-direction: column;
        gap: 12px;
    }
}

/* ==========================================================================
   PROJECT SCREENSHOTS & LIGHTBOX
   ========================================================================== */
.modal-project-screenshots {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    width: 100%;
}

.modal-project-screenshots h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    font-weight: 700;
}

.screenshots-grid-container {
    width: 100%;
    overflow-x: auto;
    position: relative;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-hover) transparent;
    -webkit-overflow-scrolling: touch;
}

.screenshots-grid-container::-webkit-scrollbar {
    height: 5px;
}

.screenshots-grid-container::-webkit-scrollbar-track {
    background: transparent;
}

.screenshots-grid-container::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: var(--radius-full);
}

.screenshots-grid-container::-webkit-scrollbar-thumb:hover {
    background-color: var(--border-hover);
}

.screenshots-track {
    display: flex;
    gap: 12px;
    width: max-content;
    padding-right: 8px;
}

.screenshot-item {
    height: 240px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-fast), box-shadow var(--transition-normal);
    cursor: zoom-in;
    background: var(--modal-bg);
}

.screenshot-item img {
    height: 100%;
    width: auto;
    object-fit: contain;
    display: block;
}

.screenshot-item:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent-violet);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* Screenshot Lightbox Overlay */
.screenshot-lightbox {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.screenshot-lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 12, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.96);
    transition: transform var(--transition-normal);
}

.screenshot-lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 82vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 20;
    transition: all var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.35);
    transform: scale(1.05);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 20;
    transition: all var(--transition-fast);
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-50%) scale(1.05);
}

.lightbox-nav.prev {
    left: 24px;
}

.lightbox-nav.next {
    right: 24px;
}

@media (max-width: 768px) {
    .lightbox-close {
        top: 16px;
        right: 16px;
        width: 38px;
        height: 38px;
    }
    
    .lightbox-nav {
        width: 38px;
        height: 38px;
    }
    
    .lightbox-nav.prev {
        left: 16px;
    }
    
    .lightbox-nav.next {
        right: 16px;
    }

    /* Modal banner scaling fix */
    .modal-project-banner {
        aspect-ratio: 16 / 9;
        min-height: 180px;
    }
    
    .visual-inner {
        transform: scale(0.9);
    }

    /* Infinite loop animations for mobile/touch users */
    /* Aura Breathing (Mobile Loop) */
    .visual-aura-breathing {
        animation: growAndGlow 4s ease-in-out infinite !important;
        border-color: var(--accent-blue) !important;
    }
    
    .visual-aura-breathing::after {
        animation: breatheOuter 4s ease-in-out infinite !important;
    }
    
    .breathing-ring.ring-1 {
        animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite !important;
    }
    
    .breathing-ring.ring-2 {
        animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite !important;
        animation-delay: 0.6s !important;
    }
    
    .breathing-ring.ring-3 {
        animation: ripple 2s cubic-bezier(0.1, 0.8, 0.3, 1) infinite !important;
        animation-delay: 1.2s !important;
    }

    /* STTFL Forum (Mobile Loop) */
    .visual-forum-box {
        animation: sttflMainLoop 5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }
    
    .visual-forum-box.reply {
        animation: sttflReplyLoop 5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }

    /* YazarEser Flashcard (Mobile Loop) */
    .visual-flashcard {
        animation: cardFlipLoop 5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    }
}

@media (max-width: 480px) {
    .visual-inner {
        transform: scale(0.78);
    }
}

/* Loop Animation Keyframes */
@keyframes sttflMainLoop {
    0%, 100% {
        transform: translateY(0);
        box-shadow: var(--shadow-sm);
    }
    40%, 65% {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
    }
}

@keyframes sttflReplyLoop {
    0%, 100% {
        opacity: 0.4;
        transform: translateY(12px) scale(0.95);
        box-shadow: none;
    }
    40%, 65% {
        opacity: 1;
        transform: translateY(0) scale(1);
        box-shadow: var(--shadow-sm);
    }
}

@keyframes cardFlipLoop {
    0%, 40%, 100% {
        transform: rotate(-3deg) rotateY(0deg);
    }
    50%, 90% {
        transform: rotate(2deg) rotateY(180deg) scale(1.05);
    }
}