/* ============================================================
   BUĞRAHAN DEVECİ — PORTFOLIO CSS
   Theme: Midnight Blue (Dark) + Krem (Light)
   ============================================================ */

/* ---- CSS VARIABLES: DARK MODE (Default) ---- */
:root {
    /* === ACCENT COLORS === */
    --accent-primary: #4F8EF7;      /* Bright Blue */
    --accent-secondary: #7C5CFC;    /* Violet Purple */
    --accent-gold: #F5C842;         /* Warm Gold */
    --accent-cyan: #38BDF8;         /* Sky Cyan */
    --accent-glow: rgba(79, 142, 247, 0.25);

    /* === DARK MODE SURFACES === */
    --bg: #080C18;
    --bg-secondary: #0F1526;
    --bg-tertiary: #17203A;
    --bg-card: #111827;
    --border: rgba(79, 142, 247, 0.12);
    --border-hover: rgba(79, 142, 247, 0.5);

    /* === TEXT === */
    --text-primary: #E8EEFF;
    --text-secondary: #8A9BC2;
    --text-muted: #4A5880;

    /* === GRADIENTS === */
    --gradient-accent: linear-gradient(135deg, #4F8EF7, #7C5CFC);
    --gradient-gold: linear-gradient(135deg, #F5C842, #F5965C);
    --gradient-hero: radial-gradient(ellipse at 40% 30%, rgba(79,142,247,0.18) 0%, rgba(124,92,252,0.1) 45%, transparent 70%);

    /* === NAVBAR === */
    --nav-bg: rgba(8, 12, 24, 0.85);

    /* === SPACING === */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* === RADIUS === */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;

    /* === TRANSITIONS === */
    --transition-fast: 0.2s ease;
    --transition-base: 0.35s ease;
    --transition-slow: 0.55s ease;

    /* === Legacy vars (used in project-detail.css) === */
    --sunset-orange: var(--accent-primary);
    --sunset-pink: var(--accent-secondary);
    --dark-bg: var(--bg);
    --dark-secondary: var(--bg-secondary);
    --dark-tertiary: var(--bg-tertiary);
}

/* ---- CSS VARIABLES: LIGHT MODE ---- */
[data-theme="light"] {
    --bg: #F5F0E8;
    --bg-secondary: #EBE5D9;
    --bg-tertiary: #DDD7CB;
    --bg-card: #EDE7DB;
    --border: rgba(79, 142, 247, 0.15);
    --border-hover: rgba(79, 142, 247, 0.55);

    --text-primary: #12192C;
    --text-secondary: #374165;
    --text-muted: #7A8AB2;

    --gradient-hero: radial-gradient(ellipse at 40% 30%, rgba(79,142,247,0.12) 0%, rgba(124,92,252,0.07) 45%, transparent 70%);
    --nav-bg: rgba(245, 240, 232, 0.9);

    --dark-bg: var(--bg);
    --dark-secondary: var(--bg-secondary);
    --dark-tertiary: var(--bg-tertiary);
    --sunset-orange: var(--accent-primary);
    --sunset-pink: var(--accent-secondary);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden; /* overflow-x buraya taşındı — body'de olursa kırpar */
}

body {
    font-family: 'Lexend', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.65;
    font-size: 16px;
    font-weight: 400;
    transition: background 0.4s ease, color 0.4s ease;
    min-width: 320px; /* minimum ekran genişliği */
}

.container {
    max-width: 1180px;
    width: 100%;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 5vw, 4rem);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}

.nav-container {
    max-width: 1180px;
    width: 100%;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 5vw, 4rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-family: 'Lexend', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    text-decoration: none;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: clamp(1rem, 2.5vw, 2.5rem);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: 'Lexend', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    position: relative;
    transition: color var(--transition-base);
    white-space: nowrap;
    text-transform: uppercase;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Nav right side: toggle + hamburger */
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 1.5px solid var(--border-hover);
    border-radius: 50px;
    width: 44px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 3px;
    transition: var(--transition-base);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px var(--accent-glow);
}

.toggle-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-accent);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

[data-theme="light"] .toggle-thumb {
    transform: translateX(20px);
    background: var(--gradient-gold);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

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

.hero-bg-gradient {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    pointer-events: none;
}

/* Subtle animated background dots */
.hero-bg-gradient::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.4;
}

#canvas3d {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 0 clamp(1rem, 4vw, 5rem);
}

.hero-title {
    font-family: 'Lexend', sans-serif;
    font-size: clamp(2.6rem, 7.5vw, 6rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.title-line[data-delay="0"] { animation-delay: 0.2s; }
.title-line[data-delay="100"] { animation-delay: 0.4s; }

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
}

/* When gradient-text is also a title-line, combine both animations */
.title-line.gradient-text {
    animation: fadeInUp 0.8s ease forwards, gradientShift 6s ease 1.2s infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle-small {
    font-family: 'Lexend', sans-serif;
    font-size: clamp(0.75rem, 1.2vw, 0.88rem);
    color: var(--accent-primary);
    max-width: 700px;
    margin: 0 auto var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 600;
}

.hero-subtitle {
    font-family: 'Lexend', sans-serif;
    font-size: clamp(0.95rem, 1.8vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
    line-height: 1.85;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1s;
}

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent-primary), transparent);
    animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.3; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    border-radius: var(--radius-sm);
    font-family: 'Lexend', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn span, .btn svg {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-accent);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(79, 142, 247, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--accent-primary);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: #fff;
    transform: translateY(-3px);
}

/* ============================================================
   SECTION BASE
   ============================================================ */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-label {
    display: block;
    font-family: 'Lexend', sans-serif;
    font-size: 0.72rem;
    color: var(--accent-primary);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.section-title {
    font-family: 'Lexend', sans-serif;
    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.center-header {
    text-align: center;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
    background: var(--bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.about-intro {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 700;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: var(--transition-base);
}

.stat-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(79, 142, 247, 0.1);
}

.stat-number {
    display: block;
    font-family: 'Lexend', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-family: 'Lexend', sans-serif;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-frame {
    position: relative;
    width: min(400px, 100%);
    aspect-ratio: 1;
}

.frame-corner {
    position: absolute;
    width: 50px;
    height: 50px;
    border: 2.5px solid var(--accent-primary);
    border-radius: 3px;
}

.frame-corner.tl { top: 0; left: 0; border-right: none; border-bottom: none; }
.frame-corner.tr { top: 0; right: 0; border-left: none; border-bottom: none; }
.frame-corner.bl { bottom: 0; left: 0; border-right: none; border-top: none; }
.frame-corner.br { bottom: 0; right: 0; border-left: none; border-top: none; }

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}
.image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center middle;
    display: block;
    border-radius: 50%;  /* ← bunu istediğin değere göre ayarla */
}

/* ============================================================
   SKILLS / EXPERTISE SECTION
   ============================================================ */
.expertise-section {
    background: var(--bg-secondary);
    overflow: hidden;
    position: relative;
}

.code-bg-overlay {
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    overflow: hidden;
    opacity: 0.04;
    font-family: 'Lexend', sans-serif;
    font-size: 0.8rem;
    color: var(--accent-primary);
    padding: 4rem 2rem;
    pointer-events: none;
    white-space: pre;
    line-height: 1.7;
    user-select: none;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.expertise-card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: var(--spacing-lg);
    overflow: hidden;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    min-height: 280px;
}

.expertise-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(79, 142, 247, 0.1);
}

.expertise-card:hover .vscode-bg {
    opacity: 0.18;
    transform: scale(1.05) rotate(-8deg) translateX(10px);
}

.vscode-bg {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 110%;
    background: #0D1117;
    border-radius: 8px;
    padding: 15px;
    opacity: 0.15;
    transform: rotate(-5deg);
    z-index: 0;
    pointer-events: none;
    font-family: 'Lexend', sans-serif; font-size: 0.82rem;
    font-size: 0.8rem;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.5s ease;
}

.vscode-bg .window-header {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
    align-items: center;
    opacity: 0.7;
}

.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.vscode-bg pre { white-space: pre-wrap; margin: 0; color: #d4d4d4; }
.kwd { color: #569CD6; }
.type, .class { color: #4EC9B0; }
.func { color: #DCDCAA; }
.str { color: #CE9178; }
.comment { color: #6A9955; }
.meta { color: #C586C0; }

.card-foreground {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-icon svg {
    width: 44px;
    height: 44px;
    color: var(--accent-primary);
    margin-bottom: 1.25rem;
}

.card-title {
    font-family: 'Lexend', sans-serif;
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    line-height: 1.2;
}

.highlight-underline {
    position: relative;
    display: inline-block;
}

.highlight-underline::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 5px;
    z-index: -1;
    border-radius: 2px;
    opacity: 0.6;
}

.highlight-underline.pink::after { background: var(--accent-secondary); }
.highlight-underline.orange::after { background: var(--accent-primary); }

.card-description {
    margin-top: auto;
    font-family: 'Lexend', sans-serif;
}

.tag {
    display: block;
    color: var(--accent-primary);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}
.tag:last-child { margin-top: 0.5rem; margin-bottom: 0; }

.card-description p {
    padding-left: 1rem;
    border-left: 2px solid var(--border-hover);
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
}

/* ============================================================
   PROJECTS SECTION
   ============================================================ */
.projects-section {
    background: var(--bg);
}

/* Filter Bar */
.filter-container {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: var(--spacing-lg);
    font-family: 'Lexend', sans-serif;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.filter-label {
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.filter-nav {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    padding: 0;
    transition: var(--transition-base);
    position: relative;
}

.filter-text:hover,
.filter-text.active {
    color: var(--text-primary);
}

.filter-text.active::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 2px;
    margin-top: 2px;
}

.filter-text sup {
    font-size: 0.6rem;
    margin-left: 2px;
    color: var(--accent-primary);
    vertical-align: super;
}

.separator {
    color: var(--text-muted);
    opacity: 0.4;
}

/* ============================================================
   MASONRY GRID + PROJECT CARDS (OVERLAY DESIGN)
   ============================================================ */
.masonry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 280px;
    gap: 1.25rem;
    grid-auto-flow: dense; /* BU SATIRI EKLE: Kalan boşlukları küçük kartlarla doldurur */
}

/* Overlay-style cards */
.project-card {
    display: block;
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    transition: transform 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                border-color 0.35s ease,
                box-shadow 0.35s ease;
    cursor: pointer;
    background: var(--bg-card);
}

.project-card:hover {
    transform: translateY(-8px) scale(1.01);
    border-color: var(--border-hover);
    box-shadow: 0 20px 50px rgba(79, 142, 247, 0.15);
}

/* Card size variants — cardSize'a göre */

/* normal → 1 col, 1 satır (280px) */

/* wide → 2 col, 1 satır (yatay banner) */
.project-card.card-wide {
    grid-column: span 2;
}

/* tall → 1 col, 2 satır (dikey/uzun) */
.project-card.card-tall {
    grid-row: span 2;
}

/* wide-tall → 2 col + 2 satır (tall'ın yanına tam oturan yatay büyük kart) */
.project-card.card-wide-tall {
    grid-column: span 2;
    grid-row: span 2;
}

/* Legacy size classes — neutralized */
.project-card.tall,
.project-card.wide,
.project-card.big {
    grid-column: auto;
    grid-row: auto;
}
.project-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
    display: block;
}

.project-card:hover .project-image img {
    transform: scale(1.06);
}

/* Placeholder gradients (no image) */
.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.6s ease;
}

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

.placeholder-web {
    background: linear-gradient(145deg, #0F2557 0%, #1A3A8F 50%, #2B52BE 100%);
}

.placeholder-game {
    background: linear-gradient(145deg, #0D1B3E 0%, #1A2B6E 50%, #23378A 100%);
}

.placeholder-app {
    background: linear-gradient(145deg, #0A1F4E 0%, #163070 50%, #1E4090 100%);
}

.project-placeholder svg {
    width: 64px;
    height: 64px;
    color: rgba(255, 255, 255, 0.18);
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

/* Gradient overlay: bottom-up */
.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(8, 12, 24, 0.96) 0%,
        rgba(8, 12, 24, 0.55) 40%,
        rgba(8, 12, 24, 0.05) 70%,
        transparent 100%
    );
    transition: background 0.4s ease;
    z-index: 1;
}

[data-theme="light"] .project-overlay {
    background: linear-gradient(
        to top,
        rgba(18, 25, 44, 0.92) 0%,
        rgba(18, 25, 44, 0.6) 40%,
        rgba(18, 25, 44, 0.1) 70%,
        transparent 100%
    );
}

/* Project number badge */
.project-card::before {
    content: attr(data-index);
    position: absolute;
    top: 1.25rem;
    left: 1.25rem;
    font-family: 'Lexend', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.45);
    z-index: 3;
    transition: color 0.3s ease;
}

.project-card:hover::before {
    color: var(--accent-primary);
}

/* Text sits on top of overlay */
.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    z-index: 2;
    transform: translateY(6px);
    transition: transform 0.35s ease;
}

.project-card:hover .project-info {
    transform: translateY(0);
}

.project-category {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--accent-cyan);
    margin-bottom: 0.4rem;
    display: block;
    font-weight: 700;
}

.project-info h3 {
    font-family: 'Lexend', sans-serif;
    font-size: 1.15rem;
    color: #fff;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.project-info p {
    font-size: 0.8rem;
    color: rgba(232, 238, 255, 0.7);
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.35s ease;
}

.project-card:hover .project-info p {
    max-height: 60px;
    opacity: 1;
}

/* Arrow icon on card */
.card-arrow {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(79, 142, 247, 0.12);
    border: 1px solid rgba(79, 142, 247, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    z-index: 3;
    opacity: 0;
    transform: scale(0.8) rotate(-45deg);
    transition: opacity 0.3s ease, transform 0.3s ease;
    backdrop-filter: blur(4px);
}

.project-card:hover .card-arrow {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

/* Legacy size classes — neutralized */
.project-card.tall,
.project-card.wide,
.project-card.big {
    grid-column: auto;
    grid-row: auto;
    aspect-ratio: 4/3;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-section {
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact-intro {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

.contact-method:hover {
    border-color: var(--accent-primary);
    transform: translateX(8px);
    box-shadow: 0 8px 25px rgba(79, 142, 247, 0.1);
}

.method-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 142, 247, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
}

.method-icon svg {
    width: 22px;
    height: 22px;
}

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

.method-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.method-value {
    font-size: 1rem;
    color: var(--text-primary);
    margin-top: 0.2rem;
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Lexend', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left p {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.back-to-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    transition: var(--transition-base);
}

.back-to-top:hover {
    color: var(--accent-primary);
    transform: translateY(-3px);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================================
   RESPONSIVE — Tablet (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-stats {
        max-width: 500px;
        margin: var(--spacing-md) auto 0;
    }

    .about-image {
        order: -1;
    }

    .image-frame {
        width: min(300px, 100%);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 260px;
    }

    /* tablet'te wide-tall 2 col ama tek satır */
    .project-card.card-wide-tall {
        grid-column: span 2;
        grid-row: auto;
    }

    .project-card.card-tall {
        grid-row: span 2;
    }
}

/* ============================================================
   RESPONSIVE — Mobile (max 768px)
   ============================================================ */
@media (max-width: 768px) {
    /* Nav */
    .nav-container {
        justify-content: space-between;
    }

    /* nav-links becomes full-screen overlay */
    .nav-links {
        position: fixed;
        top: 62px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 62px);
        background: var(--bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transition: left var(--transition-base);
        border-top: 1px solid var(--border);
        z-index: 999;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    /* Hero */
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    /* Sections */
    section {
        padding: var(--spacing-lg) 0;
    }

    /* About */
    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    /* Projects grid - single column */
    .masonry-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 240px;
        gap: 1rem;
    }

    .project-card.card-wide,
    .project-card.card-tall,
    .project-card.card-wide-tall,
    .project-card.tall,
    .project-card.wide,
    .project-card.big {
        grid-column: auto;
        grid-row: auto;
    }

    /* Always show description text on mobile */
    .project-info p {
        max-height: 60px;
        opacity: 1;
        -webkit-line-clamp: 2;
    }

    .filter-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ============================================================
   RESPONSIVE — Small Mobile (max 480px)
   ============================================================ */
@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: clamp(2.2rem, 10vw, 3.5rem);
    }

    .filter-nav {
        gap: 0.4rem;
    }
}

/* ============================================================
   VSCODE-BG MOBILE
   ============================================================ */
@media (max-width: 768px) {
    .vscode-bg {
        width: 100%;
        bottom: 0;
        right: 0;
        opacity: 0.06;
    }

    .code-bg-overlay {
        display: none;
    }
}

/* ============================================================
   SKILL / FILTER ACTIVE STATE — accent color aware
   ============================================================ */
.skill-tags span {
    padding: 0.25rem 0.75rem;
    background: rgba(79, 142, 247, 0.08);
    border: 1px solid rgba(79, 142, 247, 0.25);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.contact-method svg {
    width: 22px;
    height: 22px;
}

/* ============================================================
   EXPERIENCE / TIMELINE SECTION
   ============================================================ */
.experience-section {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding-left: 2rem;
    max-width: 860px;
}

/* Vertical line */
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(
        to bottom,
        var(--accent-primary),
        var(--accent-secondary),
        transparent
    );
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding: 0 0 var(--spacing-lg) 2.5rem;
}

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

/* Glowing dot on the line */
.timeline-dot {
    position: absolute;
    left: -2.65rem;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-secondary);
    box-shadow: 0 0 0 3px var(--accent-primary), 0 0 16px rgba(79, 142, 247, 0.5);
    transition: var(--transition-base);
    z-index: 1;
}

.timeline-item:hover .timeline-dot {
    background: var(--accent-secondary);
    box-shadow: 0 0 0 3px var(--accent-secondary), 0 0 20px rgba(124, 92, 252, 0.6);
    transform: scale(1.2);
}

/* Year label */
.timeline-date {
    font-family: 'Lexend', sans-serif;
    font-size: 0.75rem;
    color: var(--accent-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

/* Card */
.timeline-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.timeline-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px 0 0 3px;
    opacity: 0;
    transition: var(--transition-base);
}

.timeline-item:hover .timeline-card {
    border-color: var(--border-hover);
    transform: translateX(6px);
    box-shadow: 0 12px 40px rgba(79, 142, 247, 0.1);
}

.timeline-item:hover .timeline-card::before {
    opacity: 1;
}

.timeline-card-header {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

.timeline-card-header h3 {
    font-family: 'Lexend', sans-serif;
    font-size: 1.2rem;
    color: var(--text-primary);
    line-height: 1.3;
    margin: 0;
}

.timeline-company {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-family: 'Lexend', sans-serif;
}

.timeline-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.75;
    margin-bottom: 1.25rem;
}

/* Badge */
.timeline-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    width: fit-content;
}

.badge-active {
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: var(--accent-cyan);
}

.badge-edu {
    background: rgba(124, 92, 252, 0.12);
    border: 1px solid rgba(124, 92, 252, 0.3);
    color: var(--accent-secondary);
}

.badge-work {
    background: rgba(79, 142, 247, 0.12);
    border: 1px solid rgba(79, 142, 247, 0.3);
    color: var(--accent-primary);
}

/* Tags inside card */
.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-tags span {
    padding: 0.3rem 0.75rem;
    background: rgba(79, 142, 247, 0.07);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: 'Lexend', sans-serif;
    transition: var(--transition-fast);
}

.timeline-item:hover .timeline-tags span {
    border-color: rgba(79, 142, 247, 0.25);
    color: var(--accent-primary);
}

/* Timeline Responsive */
@media (max-width: 768px) {
    .timeline {
        padding-left: 1.5rem;
    }
    .timeline-item {
        padding-left: 2rem;
    }
    .timeline-dot {
        left: -2.2rem;
    }
    .timeline-card {
        padding: 1.25rem;
    }
    .timeline-item:hover .timeline-card {
        transform: translateX(3px);
    }
}

/* ============================================================
   DOC CHIPS — Timeline üzerinde hover'da çıkan belge kartları
   ============================================================ */
.timeline-item {
    overflow: visible; /* chip'lerin taşmasına izin ver */
}

.timeline-docs {
    position: absolute;
    left: calc(100% + 1.75rem);
    top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    z-index: 20;
    /* Görünmez köprü — fare geçerken hover kaybolmasın */
    padding-left: 1rem;
    margin-left: -1rem;
}

/* Bağlantı çizgisi */
.timeline-docs::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 1.1rem;
    width: 1.75rem;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(79, 142, 247, 0.35));
}

.timeline-item:hover .timeline-docs,
.timeline-docs:hover {
    opacity: 1;
    transform: translateX(0);
    pointer-events: all;
}

.timeline-item:hover .doc-chip,
.timeline-docs:hover .doc-chip {
    opacity: 1;
    transform: translateX(0);
}

/* Staggered gecikme */
.timeline-docs .doc-chip:nth-child(1) { transition-delay: 0s; }
.timeline-docs .doc-chip:nth-child(2) { transition-delay: 0.05s; }
.timeline-docs .doc-chip:nth-child(3) { transition-delay: 0.10s; }

.doc-chip {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.9rem 0.55rem 0.75rem;
    background: var(--bg-card);
    border: 1px solid rgba(79, 142, 247, 0.18);
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    min-width: 170px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    text-decoration: none;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity 0.25s ease, transform 0.25s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.timeline-item:hover .doc-chip {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:hover .doc-chip:nth-child(1) { transition-delay: 0.05s; }
.timeline-item:hover .doc-chip:nth-child(2) { transition-delay: 0.12s; }
.timeline-item:hover .doc-chip:nth-child(3) { transition-delay: 0.19s; }

.doc-chip:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 4px 18px rgba(79, 142, 247, 0.15);
    transform: translateX(3px) !important;
}

[data-theme="light"] .doc-chip {
    background: #ffffff;
    border-color: rgba(79, 142, 247, 0.3);
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

[data-theme="light"] .doc-chip-label {
    color: #1a2340;
}

[data-theme="light"] .doc-chip-sub {
    color: #6b7a99;
}

.doc-icon {
    color: var(--accent-primary);
    flex-shrink: 0;
    opacity: 0.85;
}

.doc-chip-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.doc-chip-label {
    font-family: 'Lexend', sans-serif;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.2;
}

.doc-chip-sub {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-family: 'Lexend', sans-serif;
}

/* Mobilde chip'ler kartın altında gösterilir */
@media (max-width: 768px) {
    .timeline-docs {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        opacity: 1;
        transform: none;
        pointer-events: all;
        margin-top: 0.85rem;
        padding-top: 0.85rem;
        border-top: 1px solid var(--border);
        padding-left: 0;
        margin-left: 0;
    }
    .timeline-docs::before { display: none; }
    .doc-chip {
        opacity: 1;
        transform: none !important;
        transition: border-color 0.2s ease, box-shadow 0.2s ease !important;
    }
    .doc-chip:hover { transform: none !important; }
}

/* ============================================================
   DOC LİGHTBOX
   ============================================================ */
.doc-lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(4, 6, 14, 0.96);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

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

.doc-lightbox-inner {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.doc-lightbox-inner img {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 80px rgba(0,0,0,0.6);
    object-fit: contain;
    transition: opacity 0.2s ease;
}

.doc-lightbox-inner iframe {
    width: min(860px, 90vw);
    height: 80vh;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}

.doc-lightbox-title {
    font-family: 'Lexend', sans-serif;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
}

.doc-lightbox-close {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
    z-index: 9001;
}

.doc-lightbox-close:hover {
    background: rgba(255,255,255,0.15);
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(4, 6, 14, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

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

.lightbox-inner {
    position: relative;
    max-width: min(90vw, 1100px);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.lightbox-img {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
    user-select: none;
}

.lightbox-caption {
    color: var(--text-secondary);
    font-family: 'Lexend', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 1px;
    text-align: center;
}

/* Nav arrows */
.lightbox-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(79, 142, 247, 0.12);
    border: 1px solid rgba(79, 142, 247, 0.25);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(4px);
    z-index: 9001;
}

.lightbox-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(79, 142, 247, 0.4);
}

.lightbox-prev { left: -3.5rem; }
.lightbox-next { right: -3.5rem; }

/* Close button */
.lightbox-close {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 9002;
    font-size: 1.2rem;
    line-height: 1;
}

.lightbox-close:hover {
    background: rgba(255, 80, 80, 0.2);
    border-color: rgba(255, 80, 80, 0.4);
    color: #ff6b6b;
}

/* Counter dots */
.lightbox-dots {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.lightbox-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--border-hover);
    transition: var(--transition-fast);
    cursor: pointer;
}

.lightbox-dot.active {
    background: var(--accent-primary);
    transform: scale(1.3);
}

/* Gallery grid in project detail */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: var(--spacing-md);
}

.gallery-thumb {
    aspect-ratio: 16/9;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--border);
    position: relative;
    background: var(--bg-tertiary);
    transition: var(--transition-base);
}

.gallery-thumb:hover {
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(79, 142, 247, 0.2);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
    display: block;
}

.gallery-thumb:hover img {
    transform: scale(1.06);
}

/* Expand icon on hover */
.gallery-thumb::after {
    content: '⤢';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: rgba(79, 142, 247, 0.35);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-thumb:hover::after {
    opacity: 1;
}

/* Placeholder gallery item */
.gallery-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: 'Lexend', sans-serif;
}

.gallery-thumb-placeholder svg {
    width: 32px;
    height: 32px;
    opacity: 0.4;
}

@media (max-width: 768px) {
    .lightbox-prev { left: -2.5rem; }
    .lightbox-next { right: -2.5rem; }
    .lightbox-btn {
        width: 38px;
        height: 38px;
    }
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}