/* ==========================================================================
   DESIGN TOKENS & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-primary: #F8F7F4;       /* Off White */
    --color-bg-secondary: #E8E4DC;     /* Highlight / Card Surface */
    --color-bg-tertiary: #F0EDE6;      /* Lighter highlight */
    --color-text-primary: #0A0A0A;     /* Primary Black */
    --color-text-secondary: #4A4A4A;   /* Muted body text */
    --color-accent: #1A1A1A;           /* Borders, divider lines */
    --color-link-cta: #111111;         /* Interactive elements */
    --color-border: rgba(26, 26, 26, 0.15); /* Soft border */
    --color-border-hover: rgba(26, 26, 26, 0.8);
    --color-error: #A23B3C;            /* Elegant dark red for errors */
    --color-success: #2C5E43;          /* Elegant dark green for success */
    --color-white: #FFFFFF;

    /* Typography */
    --font-display: "Playfair Display", Georgia, serif;
    --font-heading: "DM Serif Display", Georgia, serif;
    --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", Courier, monospace;

    /* Spacing Scale */
    --space-2xs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    --space-5xl: 120px;

    /* Transitions */
    --transition-duration: 350ms;
    --transition-easing: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    
    /* Z-Index Scale */
    --z-index-back: -10;
    --z-index-base: 1;
    --z-index-nav: 100;
    --z-index-header: 1000;
    --z-index-overlay: 2000;
    
    /* Header Background */
    --color-header-bg: rgba(248, 247, 244, 0.85);
}

/* Global Transitions for Theme Swapping */
body {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

.site-header, 
.card, 
.project-card, 
.about-card, 
.metric-card,
.section-divider, 
footer,
.nav-link,
button,
a,
input,
textarea {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, opacity 0.4s ease;
}

/* ==========================================================================
   DARK MODE COLOR SYSTEM
   ========================================================================== */
body.dark-mode {
    --color-bg-primary: #0A0A0A;       /* Premium Obsidian Black */
    --color-bg-secondary: #161616;     /* Elevated Card Surface */
    --color-bg-tertiary: #1F1F1F;      /* Hover states & tags */
    --color-text-primary: #F8F7F4;     /* Crisp Off-White */
    --color-text-secondary: #A0A0A0;   /* Muted Silver */
    --color-border: rgba(248, 247, 244, 0.12); /* Soft light border */
    --color-white: #121212;
    --color-accent: #333333;           /* Dark borders */
    --color-link-cta: #F8F7F4;
    --color-header-bg: rgba(10, 10, 10, 0.85); /* Semi-transparent dark background */
}

/* Logo inversion for dark mode text clarity */
body.dark-mode .logo-img,
body.dark-mode .logo-img-footer {
    filter: invert(0.9) brightness(1.2);
}

/* Image adjustments in dark mode for comfortable reading */
body.dark-mode img:not(.logo-img):not(.logo-img-footer) {
    filter: brightness(0.85) contrast(1.05);
}

/* Theme Toggle Button Styling */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--color-text-primary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    z-index: var(--z-index-nav);
    margin-left: auto; /* Push it to the right on mobile next to hamburger */
    margin-right: var(--space-sm);
}

.theme-toggle:hover {
    background-color: var(--color-bg-secondary);
}

.theme-toggle svg {
    transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

/* Toggle icon display state */
body.dark-mode .theme-toggle .moon-icon {
    display: none;
}
body.light-mode .theme-toggle .sun-icon {
    display: none;
}

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

html {
    font-size: 16px;
    scroll-behavior: auto; /* Handled smoothly by JS */
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1.0625rem; /* ~17px */
    line-height: 1.6;
    letter-spacing: -0.01em;
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(26, 26, 26, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 26, 26, 0.012) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center top;
    pointer-events: none;
    z-index: var(--z-index-back);
}

/* Containers */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

@media (min-width: 768px) {
    .container {
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
}

/* Section dividers */
.section-divider {
    height: 1px;
    background-color: var(--color-border);
    margin-top: var(--space-4xl);
    margin-bottom: var(--space-4xl);
    border: none;
}

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

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

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

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

/* Typography styles */
h1, h2, h3, h4 {
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.8125rem; /* ~13px */
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
    display: block;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem; /* ~40px */
    margin-bottom: var(--space-2xl);
    color: var(--color-text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3.25rem; /* ~52px */
    }
}

/* ==========================================================================
   BUTTONS & LINKS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    min-height: 48px; /* Touch target minimum */
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: var(--z-index-base);
    transition: color var(--transition-duration) var(--transition-easing), border-color var(--transition-duration) var(--transition-easing), box-shadow var(--transition-duration) var(--transition-easing);
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: -1;
}

.btn:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

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

.btn-primary::before {
    background-color: var(--color-bg-primary);
}

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

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

.btn-secondary::before {
    background-color: var(--color-text-primary);
}

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

.btn-icon {
    margin-left: var(--space-xs);
    transition: transform var(--transition-duration) var(--transition-easing);
}

.btn-primary:hover .btn-icon {
    transform: translateX(6px);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--color-header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-index-header);
    transition: background-color var(--transition-fast);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 52px;
    width: auto;
    object-fit: contain;
    display: block;
}

.logo-img-footer {
    height: 50px;
    width: auto;
    object-fit: contain;
    display: block;
    margin-bottom: var(--space-xs);
}

/* Desktop Navigation */
.main-nav {
    display: none;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--space-xs) 0;
    display: inline-block;
}

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

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1.5px;
    background-color: var(--color-text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-duration) var(--transition-easing);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ── Language Toggle ─────────────────────────────────────────────────── */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 3px;
    flex-shrink: 0;
}

.lang-btn {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    padding: 5px 9px;
    border-radius: 5px;
    transition: all 0.2s ease;
    cursor: pointer;
    touch-action: manipulation;
    min-width: 32px;
    text-align: center;
}
.lang-btn:hover { color: var(--color-text-primary); }
.lang-btn.active {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
}

.lang-divider {
    color: var(--color-border);
    font-size: 0.65rem;
    user-select: none;
    pointer-events: none;
    display: none; /* hidden — pills are clearer */
}

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

/* ── Modern Hamburger (3 morphing bars) ──────────────────────────────── */
.mobile-nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    z-index: calc(var(--z-index-overlay) + 1);
    border-radius: 10px;
    transition: background-color 0.2s ease;
    touch-action: manipulation;
}
.mobile-nav-toggle:hover { background: var(--color-border); }

.hamburger-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transform-origin: center;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                opacity   0.25s ease,
                width     0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.hamburger-bar.bar-2 { width: 16px; align-self: flex-start; margin-left: 3px; }

/* Active state → X morph */
.mobile-nav-toggle[aria-expanded="true"] .bar-1 { transform: translateY(7px) rotate(45deg); }
.mobile-nav-toggle[aria-expanded="true"] .bar-2 { opacity: 0; transform: scaleX(0); }
.mobile-nav-toggle[aria-expanded="true"] .bar-3 { transform: translateY(-7px) rotate(-45deg); width: 22px; }

/* ── Backdrop ──────────────────────────────────────────────────────────── */
.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-index-overlay) - 1);
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.35s ease;
}
.nav-backdrop.active {
    display: block;
    opacity: 1;
}

/* ── Mobile Overlay Nav ────────────────────────────────────────────────── */
@media (max-width: 767px) {
    .main-nav {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 82vw);
        height: 100dvh;
        z-index: var(--z-index-overlay);
        padding: 0;
        /* Glassmorphism panel */
        background: var(--color-bg-primary);
        border-left: 1px solid var(--color-border);
        box-shadow: -24px 0 80px rgba(0, 0, 0, 0.18);
        /* Slide in from right */
        transform: translateX(100%);
        transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
                    visibility 0.45s;
        visibility: hidden;
        overflow: hidden;
    }

    .main-nav.active {
        transform: translateX(0);
        visibility: visible;
    }

    /* ── Menu Header ── */
    .mobile-nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        border-bottom: 1px solid var(--color-border);
        flex-shrink: 0;
    }
    .mobile-menu-logo { height: 36px; }
    .mobile-nav-close {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-text-secondary);
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        transition: all 0.2s ease;
        touch-action: manipulation;
    }
    .mobile-nav-close:hover { color: var(--color-text-primary); background: var(--color-bg-tertiary); }

    /* ── Nav List ── */
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px 0;
        flex: 1;
        overflow-y: auto;
    }

    .nav-item {
        opacity: 0;
        transform: translateX(28px);
        transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        /* stagger via CSS var --i set inline */
        transition-delay: calc(var(--i, 0) * 65ms + 80ms);
    }
    .main-nav.active .nav-item {
        opacity: 1;
        transform: translateX(0);
    }

    /* Nav link row */
    .nav-link {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 18px 24px;
        font-family: var(--font-body);
        font-size: 1rem;
        font-weight: 500;
        color: var(--color-text-secondary);
        border-bottom: 1px solid var(--color-border);
        transition: all 0.2s ease;
        position: relative;
    }
    .nav-link::after { display: none; }  /* remove desktop underline */
    
    .nav-link:hover,
    .nav-link.active {
        color: var(--color-text-primary);
        background: var(--color-bg-secondary);
        padding-left: 28px;
    }
    .nav-link.active { font-weight: 600; }

    /* Number tag */
    .nav-num {
        font-family: var(--font-mono);
        font-size: 0.65rem;
        letter-spacing: 0.08em;
        color: var(--color-text-secondary);
        opacity: 0.55;
        flex-shrink: 0;
        transition: opacity 0.2s ease;
    }
    .nav-link:hover .nav-num,
    .nav-link.active .nav-num { opacity: 1; }

    /* Label */
    .nav-label { flex: 1; letter-spacing: -0.01em; }

    /* Arrow icon */
    .nav-arrow {
        flex-shrink: 0;
        opacity: 0;
        transform: translateX(-6px);
        transition: opacity 0.2s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        color: var(--color-text-secondary);
    }
    .nav-link:hover .nav-arrow,
    .nav-link.active .nav-arrow {
        opacity: 1;
        transform: translateX(0);
    }

    /* ── Social Footer ── */
    .mobile-nav-footer {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 20px 24px;
        border-top: 1px solid var(--color-border);
        flex-shrink: 0;
        opacity: 0;
        transform: translateY(12px);
        transition: opacity 0.4s ease 0.35s, transform 0.4s cubic-bezier(0.16,1,0.3,1) 0.35s;
    }
    .main-nav.active .mobile-nav-footer {
        opacity: 1;
        transform: translateY(0);
    }
    .mobile-social-link {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--color-border);
        color: var(--color-text-secondary);
        transition: all 0.2s ease;
        touch-action: manipulation;
    }
    .mobile-social-link:hover { color: var(--color-text-primary); background: var(--color-bg-secondary); }
    .mobile-nav-domain {
        margin-left: auto;
        font-family: var(--font-mono);
        font-size: 0.7rem;
        letter-spacing: 0.06em;
        color: var(--color-text-secondary);
        opacity: 0.5;
    }
}

/* Hide desktop-only elements on mobile */
@media (max-width: 767px) {
    .mobile-nav-header { display: flex; }
}
@media (min-width: 768px) {
    .mobile-nav-header,
    .mobile-nav-footer,
    .nav-num,
    .nav-arrow,
    .mobile-social-link,
    .mobile-nav-domain,
    .nav-backdrop { display: none !important; }
    .nav-item { opacity: 1 !important; transform: none !important; }
    .nav-link {
        display: inline-block;
        padding: var(--space-xs) 0;
        font-family: var(--font-body);
        font-size: 0.9375rem;
    }
    .nav-label { display: inline; }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-xl);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

@media (min-width: 992px) {
    .hero-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: var(--space-2xl);
    }
}

.hero-content {
    max-width: 680px;
}

/* Availability Status Badge */
.ai-badge-wrapper {
    margin-bottom: var(--space-md);
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem; /* ~12px */
    font-weight: 600;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    padding: 0.5rem 1.15rem;
    border-radius: 50px;
    border: 1px solid var(--color-accent);
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-success);
    border-radius: 50%;
    display: inline-block;
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--color-success);
    animation: statusPulse 2s infinite ease-in-out;
}

@keyframes statusPulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(2.8);
        opacity: 0;
    }
}

/* Hero Title */
.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem; /* ~56px */
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 5rem; /* ~80px */
    }
}

@media (min-width: 1200px) {
    .hero-title {
        font-size: 5.5rem; /* ~88px */
    }
}

.hero-tagline {
    font-size: 1.1875rem; /* ~19px */
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 580px;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

@media (max-width: 480px) {
    .hero-ctas .btn {
        width: 100%;
    }
}

/* Asymmetric Editorial Frame on right side */
.hero-visual-wrapper {
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-frame {
    width: 320px;
    height: 380px;
    border: 1px solid var(--color-accent);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-secondary);
    position: relative;
}

.hero-frame::after {
    content: "";
    position: absolute;
    top: 15px;
    left: 15px;
    width: 100%;
    height: 100%;
    border: 1px solid var(--color-accent);
    z-index: var(--z-index-back);
    transition: transform var(--transition-duration) var(--transition-easing);
}

.hero-frame:hover::after {
    transform: translate(-8px, -8px);
}

.frame-content {
    width: 100%;
    height: 100%;
    border: 1px dashed rgba(26, 26, 26, 0.3);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-md);
}

.frame-text-top {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.frame-center-media {
    width: 180px;
    height: 180px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-animation-gif {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.circle-inner-text {
    font-family: var(--font-mono);
    font-size: 0.6875rem; /* ~11px */
    letter-spacing: 0.1em;
    font-weight: 700;
    line-height: 1.4;
}

.frame-text-bottom {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-align: right;
    font-weight: 600;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    margin-top: var(--space-xl);
}

@media (min-width: 992px) {
    .about-grid {
        grid-template-columns: 0.8fr 1.2fr;
        gap: var(--space-4xl);
    }
}

/* Left side photo & metrics */
.about-aside {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.profile-image-container {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border: 1px solid var(--color-accent);
    position: relative;
    background-color: var(--color-bg-secondary);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-duration) var(--transition-easing), transform var(--transition-duration) var(--transition-easing);
}

.profile-image-container:hover .profile-image {
    filter: grayscale(0%);
    transform: scale(1.03);
}

/* Metrics grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    max-width: 360px;
}

.metric-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-xs);
    text-align: center;
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast);
}

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

.metric-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem;
    line-height: 1.1;
    margin-bottom: var(--space-2xs);
    color: var(--color-text-primary);
}

.metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    line-height: 1.3;
}

/* Right side content */
.about-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
}

.bio-text p {
    font-size: 1.125rem; /* ~18px */
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.bio-text p:last-child {
    margin-bottom: 0;
}

.bio-text strong {
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Skills list */
.skills-categories {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.skills-group h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-2xs);
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.skill-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem; /* ~12px */
    padding: 0.375rem 0.75rem;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-accent);
}

.skill-tag.highlight-tag {
    background-color: transparent;
    border: 1px dashed var(--color-accent);
    font-weight: 600;
}

.skill-tag.highlight-tag:hover {
    background-color: var(--color-bg-secondary);
    border-style: solid;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.projects-filter-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-md);
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    padding: 0.5rem 1rem;
    position: relative;
    transition: color var(--transition-duration) var(--transition-easing);
}

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

.filter-btn::after {
    content: "";
    position: absolute;
    bottom: -17px; /* Align precisely above border line */
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--transition-easing);
}

.filter-btn:hover::after {
    transform: scaleX(0.4);
    transform-origin: center;
}

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

.filter-btn.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Projects grid layout */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Project Card styling */
.project-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: all var(--transition-duration) var(--transition-easing);
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Animation on filtering */
.project-card.fade-out {
    opacity: 0;
    transform: translateY(15px) scale(0.97);
    pointer-events: none;
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
    border: none;
}

.project-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
    transform: translateY(-4px);
}

/* Card layout for Featured project (spanning 2 columns on desktop) */
@media (min-width: 992px) {
    .project-card.featured {
        grid-column: span 2;
        flex-direction: row;
        min-height: 380px;
    }
    
    .project-card.featured .project-img-wrapper {
        width: 50%;
        aspect-ratio: auto;
    }
    
    .project-card.featured .project-info-wrapper {
        width: 50%;
        padding: var(--space-2xl);
        justify-content: center;
    }
}

/* Project image frame */
.project-img-wrapper {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    background-color: var(--color-bg-tertiary);
}

@media (min-width: 992px) {
    .project-card.featured .project-img-wrapper {
        border-bottom: none;
        border-right: 1px solid var(--color-border);
    }
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: var(--color-bg-tertiary);
    transition: transform var(--transition-duration) var(--transition-easing);
}

.project-card:hover .project-img {
    transform: scale(1.04);
}

/* AI assisted small stamp overlay on image */
.project-ai-stamp {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background-color: rgba(248, 247, 244, 0.95);
    border: 1px solid var(--color-accent);
    padding: 0.35rem 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.625rem; /* ~10px */
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 50px;
    color: var(--color-text-primary);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* Card details panel */
.project-info-wrapper {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-featured-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.1em;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--space-2xs);
}

.project-name {
    font-family: var(--font-heading);
    font-size: 1.625rem; /* ~26px */
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
}

.project-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.5;
}

/* Technology Badges inside card */
.project-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
    margin-bottom: var(--space-xl);
}

.project-tech-badge {
    font-family: var(--font-mono);
    font-size: 0.6875rem; /* ~11px */
    padding: 0.25rem 0.5rem;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: var(--border-radius-sm);
}

/* Link elements inside card footer */
.project-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-top: auto;
}

.project-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    display:inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    position: relative;
    padding-bottom: 2px;
}

.project-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--color-text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-duration) var(--transition-easing);
}

.project-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.project-link-icon {
    transition: transform var(--transition-fast);
}

.project-link:hover .project-link-icon {
    transform: translate(2px, -2px);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-2xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    margin-top: var(--space-xl);
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 0.9fr 1.1fr;
        gap: var(--space-4xl);
    }
}

/* Left details */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 460px;
}

.direct-contacts {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}

.contact-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
}

.contact-link {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-text-primary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    width: fit-content;
}

.contact-link:hover {
    color: var(--color-text-secondary);
}

.contact-icon {
    color: var(--color-text-primary);
    flex-shrink: 0;
}

/* Social links icons row */
.social-links-wrapper {
    margin-top: var(--space-xl);
}

.social-title {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-accent);
    transform: scale(1.05);
}

/* Contact Form column */
.contact-form-container {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: var(--space-xl);
    border-radius: var(--border-radius-sm);
}

@media (min-width: 768px) {
    .contact-form-container {
        padding: var(--space-2xl);
    }
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    position: relative;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-label .required {
    color: var(--color-error);
}

.form-input {
    width: 100%;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 0.8125rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    transition: border-color var(--transition-duration) var(--transition-easing), box-shadow var(--transition-duration) var(--transition-easing), transform var(--transition-duration) var(--transition-easing);
}

.form-input::placeholder {
    color: #999;
}

.form-input:focus {
    border-color: var(--color-text-primary);
    box-shadow: 0 4px 15px rgba(26, 26, 26, 0.04);
    transform: translateY(-1px);
    outline: none;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form input errors */
.form-input.invalid {
    border-color: var(--color-error);
}

.error-message {
    font-size: 0.75rem;
    color: var(--color-error);
    margin-top: 2px;
    min-height: 16px;
    display: block;
}

/* Submit state styling */
.btn-submit {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.btn-loader {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: var(--color-link-cta);
    top: 0;
    left: 0;
}

.btn-loader.hidden {
    display: none;
}

/* Spinner anim */
.spinner {
    animation: rotate 2s linear infinite;
}

.spinner .path {
    stroke: var(--color-bg-primary);
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

@keyframes dash {
    0% {
        stroke-dasharray: 1, 150;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -124;
    }
}

/* Toast / Status banner */
.form-status {
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    margin-top: var(--space-sm);
    display: flex;
    align-items: center;
    border: 1px solid transparent;
}

.form-status.hidden {
    display: none;
}

.form-status.success {
    background-color: rgba(44, 94, 67, 0.08);
    border-color: var(--color-success);
    color: var(--color-success);
}

.form-status.error {
    background-color: rgba(162, 59, 60, 0.08);
    border-color: var(--color-error);
    color: var(--color-error);
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.site-footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr;
    }
}

.footer-brand .logo-footer {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    display: inline-block;
}

.footer-brand .logo-footer span {
    font-family: var(--font-display);
    font-style: italic;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-nav h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.footer-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .footer-nav ul {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

.footer-nav a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

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

.footer-bottom {
    grid-column: 1 / -1;
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-xl);
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   ANIMATIONS & SCROLL OBSERVERS
   ========================================================================== */
.fade-in-element {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 900ms var(--transition-easing), transform 900ms var(--transition-easing);
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Custom Editorial Entrance Animations (Hardware Accelerated & Optimized for 60fps/120fps) */
.project-card.reveal-slide-up {
    opacity: 0;
    transform: translate3d(0, 35px, 0) scale(0.985);
    will-change: transform, opacity;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1), transform 800ms cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card.reveal-slide-left-rotate {
    opacity: 0;
    transform: translate3d(-35px, 0, 0) rotate(-0.8deg) scale(0.985);
    will-change: transform, opacity;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1), transform 800ms cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card.reveal-slide-right-rotate {
    opacity: 0;
    transform: translate3d(35px, 0, 0) rotate(0.8deg) scale(0.985);
    will-change: transform, opacity;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1), transform 800ms cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card.reveal-blur-scale {
    opacity: 0;
    transform: scale(0.96) translate3d(0, 20px, 0);
    will-change: transform, opacity;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1), transform 800ms cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card.reveal-skew-up {
    opacity: 0;
    transform: translate3d(0, 35px, 0) skewY(0.8deg) scale(0.985);
    will-change: transform, opacity;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1), transform 800ms cubic-bezier(0.25, 1, 0.5, 1);
}

/* Active Entrance States */
.project-card.reveal-slide-up.visible,
.project-card.reveal-slide-left-rotate.visible,
.project-card.reveal-slide-right-rotate.visible,
.project-card.reveal-blur-scale.visible,
.project-card.reveal-skew-up.visible {
    opacity: 1;
    transform: translate3d(0, 0, 0) rotate(0deg) skewY(0deg) scale(1) !important;
}

/* Stagger delay for hero load */
.hero-content > .fade-in-element:nth-child(1) { transition-delay: 150ms; }
.hero-content > .fade-in-element:nth-child(2) { transition-delay: 300ms; }
.hero-content > .fade-in-element:nth-child(3) { transition-delay: 450ms; }
.hero-content > .fade-in-element:nth-child(4) { transition-delay: 600ms; }
.hero-visual-wrapper.fade-in-element { transition-delay: 750ms; }

/* Hero text reveal-line classes */
.reveal-line {
    display: block;
    overflow: hidden;
    line-height: 1.15;
}

.reveal-line span {
    display: block;
    transform: translateY(110%);
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-line.visible span {
    transform: translateY(0);
}

/* Sparkle & AI Badge glow micro-animations */
@keyframes badgeGlow {
    0%, 100% { 
        border-color: var(--color-border); 
        box-shadow: 0 0 0 rgba(0, 0, 0, 0); 
    }
    50% { 
        border-color: var(--color-text-primary); 
        box-shadow: 0 0 15px rgba(26, 26, 26, 0.08); 
    }
}

.ai-badge {
    animation: badgeGlow 4s infinite ease-in-out;
    transition: transform 0.3s var(--transition-easing);
}

.ai-badge:hover {
    transform: scale(1.04);
}

@keyframes spinSlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.icon-sparkle {
    animation: spinSlow 12s linear infinite;
}

/* Reduced Motion Compatibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-delay: 0s !important;
        animation-duration: 0s !important;
        animation-iteration-count: 1 !important;
        transition-delay: 0s !important;
        transition-duration: 0s !important;
        scroll-behavior: auto !important;
    }
    
    .fade-in-element {
        opacity: 1 !important;
        transform: none !important;
    }
    
    .reveal-line span {
        transform: none !important;
    }
    
    .project-card:hover {
        transform: none !important;
    }
    
    .project-img:hover {
        transform: none !important;
    }
    
    .ai-badge {
        animation: none !important;
    }
    
    .icon-sparkle {
        animation: none !important;
    }
}

/* ==========================================================================
   7. PROJECT DETAILS MODAL (POP-UP) STYLES
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.4);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: var(--z-index-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    padding: var(--space-md);
}

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

.modal-card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-accent);
    width: 100%;
    max-width: 760px;
    max-height: 85vh;
    border-radius: var(--border-radius-md);
    position: relative;
    overflow-y: auto;
    transform: translateY(40px) scale(0.96);
    transition: transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.modal-overlay.active .modal-card {
    transform: translateY(0) scale(1);
}

.modal-close-btn {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    transition: all 0.3s var(--transition-easing);
    z-index: 10;
    cursor: pointer;
}

.modal-close-btn:hover {
    border-color: var(--color-accent);
    background-color: var(--color-bg-secondary);
    transform: rotate(90deg);
}

.modal-hero-img-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg-tertiary);
}

.modal-hero-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: var(--color-bg-tertiary);
}

.modal-info-section {
    padding: var(--space-xl) var(--space-2xl);
    text-align: left;
}

@media (max-width: 767px) {
    .modal-info-section {
        padding: var(--space-lg) var(--space-md);
    }
}

.modal-category-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.modal-category-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
}

.modal-ai-badge {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-success);
    background-color: rgba(44, 94, 67, 0.08);
    border: 1px solid var(--color-success);
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    font-weight: 600;
}

.modal-project-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    line-height: 1.15;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

@media (max-width: 767px) {
    .modal-project-title {
        font-size: 1.75rem;
    }
}

.modal-divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--space-md) 0 var(--space-lg);
}

.modal-section-heading {
    font-family: var(--font-mono);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
    text-transform: uppercase;
    font-size: 0.8125rem;
    letter-spacing: 0.15em;
}

.modal-project-desc {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.modal-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-2xl);
}

.modal-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.modal-actions-row .btn {
    flex-grow: 1;
    text-align: center;
}

@media (max-width: 480px) {
    .modal-actions-row {
        flex-direction: column;
    }
}

/* ==========================================================================
   8. MOBILE RESPONSIVE 2-COLUMN PROJECT GRID OVERRIDE
   ========================================================================== */
@media (max-width: 767px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--space-sm) !important;
    }
    
    .project-card {
        border-radius: var(--border-radius-sm);
    }
    
    /* Make featured card span 2 columns width for rhythm */
    .project-card.featured {
        grid-column: span 2 !important;
        flex-direction: column !important;
        min-height: auto !important;
    }
    
    .project-card.featured .project-img-wrapper {
        width: 100% !important;
        aspect-ratio: 16 / 10 !important;
        border-right: none !important;
        border-bottom: 1px solid var(--color-border) !important;
    }
    
    .project-card.featured .project-info-wrapper {
        width: 100% !important;
        padding: var(--space-sm) !important;
    }
    
    .project-img-wrapper {
        aspect-ratio: 1.25 / 1 !important;
    }
    
    .project-info-wrapper {
        padding: var(--space-sm) !important;
    }
    
    .project-name {
        font-size: 0.95rem !important;
        line-height: 1.3 !important;
        margin-bottom: var(--space-2xs) !important;
    }
    
    .project-desc {
        display: none !important;
    }
    
    .project-tech-list {
        display: none !important;
    }
    
    .project-links {
        margin-top: var(--space-xs) !important;
        gap: var(--space-md) !important;
    }
    
    .project-link {
        font-size: 0.75rem !important;
    }
    
    .project-ai-stamp {
        top: 6px !important;
        right: 6px !important;
        font-size: 0.55rem !important;
        padding: 0.25rem 0.5rem !important;
    }
}

/* ==========================================================================
   PREMIUM SPLASH / PRELOADER SCREEN — Dual Theme Aware
   Responds to body.dark-mode / body.light-mode set by inline theme script
   ========================================================================== */

/* ── Shared structure (theme-agnostic) ───────────────────────────────────── */
.splash-screen {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.7s;
}

.splash-screen::before,
.splash-screen::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: splashGlowPulse 4s ease-in-out infinite alternate;
}
.splash-screen::before {
    width: 520px; height: 520px;
    top: -130px; right: -90px;
    animation-delay: 0s;
}
.splash-screen::after {
    width: 420px; height: 420px;
    bottom: -110px; left: -70px;
    animation-delay: -2s;
}
@keyframes splashGlowPulse {
    from { transform: scale(1) translate(0, 0); }
    to   { transform: scale(1.15) translate(8px, -12px); }
}

/* Exit */
.splash-screen.splash-hidden {
    opacity: 0;
    transform: scale(1.04);
    visibility: hidden;
    pointer-events: none;
}

/* Content wrapper */
.splash-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
    padding: 40px 32px;
}

/* Icons row */
.splash-icons { display: flex; gap: 18px; margin-bottom: 8px; }

.splash-icon-wrapper {
    width: 54px; height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    opacity: 0;
    transform: translateY(-20px) scale(0.8);
    animation: splashIconEnter 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.splash-icon-wrapper:nth-child(1) { animation-delay: 0.10s; }
.splash-icon-wrapper:nth-child(2) { animation-delay: 0.22s; }
.splash-icon-wrapper:nth-child(3) { animation-delay: 0.34s; }

.splash-icon-wrapper::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 50%;
    animation: splashIconSpin 5s linear infinite;
    opacity: 0.45;
}

@keyframes splashIconEnter {
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes splashIconSpin {
    to { transform: rotate(360deg); }
}

/* Titles */
.splash-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0;
    opacity: 0;
    transform: translateY(24px);
    animation: splashTextUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.55s forwards;
}
.splash-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0;
    opacity: 0;
    transform: translateY(24px);
    animation: splashTextUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.72s forwards;
    /* gradient applied per-theme below */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
@keyframes splashTextUp {
    to { opacity: 1; transform: translateY(0); }
}

/* Badge */
.splash-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-top: 6px;
    padding: 8px 18px;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.06em;
    opacity: 0;
    transform: translateY(16px);
    animation: splashTextUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) 0.95s forwards;
}
.splash-badge .badge-icon {
    opacity: 0.6;
    flex-shrink: 0;
    animation: splashBadgeSpin 8s linear infinite;
}
@keyframes splashBadgeSpin { to { transform: rotate(360deg); } }

/* Progress bar */
.splash-progress {
    position: absolute;
    bottom: 0; left: 0;
    height: 2px; width: 0%;
    animation: splashProgress 2.4s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
    border-radius: 0 2px 2px 0;
}
@keyframes splashProgress {
    0%   { width: 0%; }
    60%  { width: 78%; }
    85%  { width: 93%; }
    100% { width: 100%; }
}

/* ── DARK MODE theme ─────────────────────────────────────────────────────── */
body.dark-mode .splash-screen {
    background: radial-gradient(ellipse at 55% 45%, #141414 0%, #0A0A0A 55%, #050505 100%);
}
body.dark-mode .splash-screen::before {
    background: radial-gradient(circle, rgba(248, 247, 244, 0.06) 0%, transparent 70%);
}
body.dark-mode .splash-screen::after {
    background: radial-gradient(circle, rgba(248, 247, 244, 0.04) 0%, transparent 70%);
}
body.dark-mode .splash-icon-wrapper {
    background: rgba(248, 247, 244, 0.05);
    border: 1px solid rgba(248, 247, 244, 0.15);
    color: #F8F7F4;
    box-shadow: 0 0 20px rgba(248, 247, 244, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
body.dark-mode .splash-icon-wrapper::before {
    background: conic-gradient(from 0deg, rgba(248, 247, 244, 0.35), transparent 55%);
}
body.dark-mode .splash-title {
    color: #F8F7F4;
}
body.dark-mode .splash-subtitle {
    background-image: linear-gradient(135deg, #F8F7F4 0%, #C8C5BE 50%, #8A8A8A 100%);
}
body.dark-mode .splash-badge {
    background: rgba(248, 247, 244, 0.05);
    border: 1px solid rgba(248, 247, 244, 0.16);
    color: rgba(248, 247, 244, 0.55);
}
body.dark-mode .splash-progress {
    background: linear-gradient(90deg, #F8F7F4, #9A9A9A, #3A3A3A);
    box-shadow: 0 0 10px rgba(248, 247, 244, 0.20);
}

/* ── LIGHT MODE theme ────────────────────────────────────────────────────── */
body.light-mode .splash-screen {
    /* Warm off-white — mirrors site's bg-primary */
    background: radial-gradient(ellipse at 50% 45%, #FFFFFF 0%, #F8F7F4 50%, #EDE9E2 100%);
}
body.light-mode .splash-screen::before {
    background: radial-gradient(circle, rgba(10, 10, 10, 0.04) 0%, transparent 70%);
}
body.light-mode .splash-screen::after {
    background: radial-gradient(circle, rgba(10, 10, 10, 0.03) 0%, transparent 70%);
}
body.light-mode .splash-icon-wrapper {
    background: rgba(10, 10, 10, 0.05);
    border: 1px solid rgba(26, 26, 26, 0.18);
    color: #0A0A0A;
    box-shadow: 0 0 20px rgba(10, 10, 10, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
body.light-mode .splash-icon-wrapper::before {
    background: conic-gradient(from 0deg, rgba(26, 26, 26, 0.20), transparent 55%);
}
body.light-mode .splash-title {
    color: #0A0A0A;
}
body.light-mode .splash-subtitle {
    background-image: linear-gradient(135deg, #0A0A0A 0%, #3A3A3A 50%, #6A6A6A 100%);
}
body.light-mode .splash-badge {
    background: rgba(10, 10, 10, 0.04);
    border: 1px solid rgba(26, 26, 26, 0.18);
    color: rgba(10, 10, 10, 0.55);
}
body.light-mode .splash-progress {
    background: linear-gradient(90deg, #0A0A0A, #4A4A4A, #C0BDB8);
    box-shadow: 0 0 10px rgba(10, 10, 10, 0.15);
}

/* ── Reduce motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .splash-icon-wrapper,
    .splash-icon-wrapper::before,
    .splash-title,
    .splash-subtitle,
    .splash-badge,
    .splash-badge .badge-icon,
    .splash-progress {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    .splash-screen { transition: opacity 0.3s; }
}