/* ================================================================
   Delta Fox Dynamics — Build 02 — Dark Amber Fox Theme
   Mobile-first | Responsive | Touch-optimized
   ================================================================ */

/* ── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Palette */
    --bg-deep: #0a0a0f;
    --bg-surface: #111118;
    --bg-card: #17171f;
    --bg-card-hover: #1e1e28;
    --bg-elevated: #22222d;
    --border-subtle: rgba(255,255,255,.06);
    --border-medium: rgba(255,255,255,.10);
    --text-primary: #e8e8ed;
    --text-secondary: #9999a8;
    --text-dim: #5c5c6e;
    --amber: #f59e0b;
    --amber-glow: rgba(245,158,11,.25);
    --amber-dim: rgba(245,158,11,.12);
    --green: #22c55e;
    --green-dim: rgba(34,197,94,.15);
    --blue: #3b82f6;
    --blue-dim: rgba(59,130,246,.15);
    --red: #ef4444;
    --red-dim: rgba(239,68,68,.15);
    --purple: #a855f7;
    --purple-dim: rgba(168,85,247,.15);

    /* Layout */
    --header-h: 64px;
    --max-width: 1100px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--amber);
    text-decoration: none;
    transition: color .2s;
}
a:hover { color: #fbbf24; }

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

.site-bg-logo {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: url('../img/logo_grey_transparent.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    opacity: 1;
    z-index: -1;
    pointer-events: none;
}

/* ── Header ──────────────────────────────────────────────────── */
.site-header {
    top: 0;
    z-index: 100;
    background: rgba(10,10,15,.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    height: var(--header-h);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}
.logo:hover { color: var(--text-primary); }
.logo-accent { color: var(--amber); }
.logo-icon, .footer-logo, .contact-card-icon, .logo-text {
    height: 2em;
    width: auto;  /* Adjust size as needed */
    display: inline-block;
    vertical-align: middle;
    object-fit: contain;
    position: relative;
    top: 0px;
}

/* ── Navigation ──────────────────────────────────────────────── */
.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: .875rem;
    font-weight: 500;
    transition: all .2s;
}
.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}
.nav-link--active {
    color: var(--amber);
    background: var(--amber-dim);
}
.nav-icon { font-size: 1rem; }

/* Hamburger (mobile only) */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all .25s;
}

/* ── Main ────────────────────────────────────────────────────── */
.site-main {
    flex: 1;
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 36px 20px;
    text-align: center;
    background: var(--bg-surface);
}
.footer-inner { max-width: 600px; margin: 0 auto; }
.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
}

.footer-name {
    font-weight: 700;
    font-size: 1rem;
}
.footer-tagline {
    color: var(--text-secondary);
    font-size: .85rem;
    margin-bottom: 16px;
}
.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: .85rem;
}
.footer-links a {
    color: var(--text-secondary);
}
.footer-links a:hover { color: var(--amber); }
.footer-sep { color: var(--text-dim); }
.footer-copy {
    color: var(--text-dim);
    font-size: .75rem;
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: calc(60vh - var(--header-h));
    padding: 20px 0 40px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: .7rem;
    color: var(--amber);
    background: var(--amber-dim);
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: .05em;
}

.hero-title {
    font-size: clamp(2.4rem, 8vw, 4.2rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}
.hero-line { display: block; }
.hero-line--accent {
    color: var(--amber);
    text-shadow: 0 0 60px var(--amber-glow);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}
.hero-sub-line { display: block; }
.hero-sub-line--dim {
    color: var(--text-dim);
    font-size: .9rem;
    margin-top: 4px;
    font-family: var(--font-mono);
    font-size: .8rem;
}

.hero-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .8rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    flex-shrink: 0;
}
.status-dot--live {
    animation: pulse-dot 2s ease-in-out infinite;
}

.hero-visual {
    position: relative;
    width: 280px;
    height: 280px;
    flex-shrink: 0;
    display: none; /* hidden on mobile */
    justify-content: center;
    align-items: center;
}
.hero-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 30px var(--amber-glow));
    animation: hero-logo-float 6s ease-in-out infinite;
}

/* ── Section Labels ──────────────────────────────────────────── */
.section-label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--text-dim);
    margin-bottom: 20px;
    font-weight: 600;
}

/* ── Nav Cards Grid ──────────────────────────────────────────── */
.nav-cards { margin-top: 20px; }
.card-grid {
    display: grid;
    gap: 16px;
}
.card-grid--3 {
    grid-template-columns: 1fr;
}

.nav-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 28px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all .3s;
    cursor: pointer;
    color: var(--text-primary);
}
.nav-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--amber-dim);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,.4);
    color: var(--text-primary);
}
.nav-card-icon { font-size: 2rem; }
.nav-card-title {
    font-size: 1.15rem;
    font-weight: 700;
}
.nav-card-desc {
    font-size: .875rem;
    color: var(--text-secondary);
    line-height: 1.55;
    flex: 1;
}
.nav-card-cta {
    font-size: .8rem;
    font-weight: 600;
    color: var(--amber);
    margin-top: 4px;
}

/* ── Tech Stack ──────────────────────────────────────────────── */
.tech-stack { margin-top: 50px; padding-bottom: 10px; }
.stack-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.stack-badge {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 6px 14px;
    border-radius: 20px;
}

/* ── Page Header ─────────────────────────────────────────────── */
.page-header {
    margin-bottom: 32px;
}
.page-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}
.page-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
}

/* ── Filter Bar ──────────────────────────────────────────────── */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}
.filter-btn {
    font-family: var(--font-sans);
    font-size: .78rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all .2s;
}
.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-medium);
}
.filter-btn--active,
.filter-btn--active:hover {
    color: var(--amber);
    background: var(--amber-dim);
    border-color: var(--amber-dim);
}
.filter-sep {
    color: var(--text-dim);
    align-self: center;
    margin: 0 4px;
    font-size: .85rem;
}

/* ── Vertical Timeline + Stacked Vertical Bars ─────────── */
.board-controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.status-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: .85rem;
    color: var(--text-secondary);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}
.legend-line {
    width: 40px;
    height: 3px;
}

/* Vertical Timeline Board Container */
.vertical-lanes-board {
    display: flex;
    position: relative;
    min-height: 800px;
}

/* Vertical Timeline Axis (Left) */
.timeline-axis-vertical {
    width: 100px;
    min-width: 100px;
    position: relative;
    border-right: 2px solid var(--border-medium);
    padding-right: 16px;
}

.axis-scale-vertical {
    position: relative;
    width: 100%;
    height: 100%;
}

.axis-label {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: .75rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
}
.axis-label--top { top: 10px; }
.axis-label--bottom { bottom: 10px; }

.axis-tick-vertical {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.tick-year-vertical {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 4px;
}

.tick-line-vertical {
    width: 2px;
    flex:1;
    background: linear-gradient(to bottom, var(--border-subtle) 0%, var(--border-subtle) 60%, transparent 100%);
    margin-left: auto;
    margin-right: auto;
}

/* Lanes Container (Stacked Horizontally) */
.lanes-container {
    flex: 1;
    position: relative;
    height: 100%;
}

/* Single Project Bar (Vertical) */
.project-bar {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all .3s;
    overflow: visible;
    cursor: pointer;
}
.project-bar:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-subtle);
    z-index: 10;
}

/* Vertical Bar Line */
.bar-line {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.project-track {
    width: 100%;
    height: 100%;
    border-left-width: 6px;
    transition: all .3s;
    cursor: pointer;
}
.project-track:hover {
    filter: brightness(1.2);
    border-left-width: 8px;
}

/* Line Styles by Status */
.project-bar--active .project-track {
    box-shadow: 0 0 12px var(--green-dim);
}
.project-bar--completed .project-track {
    /* Solid blue */
}
.project-bar--planned .project-track {
    opacity: 0.5;
}
.project-bar--paused .project-track {
    opacity: 0.8;
}

/* Bar Nodes on Vertical Line */
.bar-node {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.node-marker {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 3px solid var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    font-weight: bold;
    transition: all .3s;
}

.node-top .node-marker {
    border-color: var(--text-dim);
}
.node-bottom .node-marker {
    border-color: var(--blue);
    background: var(--blue);
    color: white;
}
.node-paused .node-marker {
    border-color: var(--amber);
    background: var(--amber);
    color: white;
}
.node-current .node-marker {
    border-color: var(--green);
    background: var(--green);
}

.node-marker--check {
    font-size: .8rem;
}

.node-marker--pulse {
    animation: pulse-vertical 2s infinite;
}
@keyframes pulse-vertical {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
}

.bar-node:hover .node-marker {
    transform: scale(1.3);
}

/* Bar Info Panel (Click to expand) */
.bar-info {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    user-select: none;
    min-width: 200px;
    z-index: 20;
    transition: all .2s;
    white-space: nowrap;
}
.bar-info:hover {
    border-color: var(--amber);
    background: var(--bg-card);
}
.bar-info:hover .bar-title {
    color: var(--amber);
}

.bar-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.bar-status {
    font-size: .65rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 6px;
}
.status--active { color: var(--green); background: var(--green-dim); }
.status--completed { color: var(--blue); background: var(--blue-dim); }
.status--planned { color: var(--purple); background: var(--purple-dim); }
.status--paused { color: var(--amber); background: var(--amber-dim); }

.bar-date {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-dim);
}

.bar-title {
    font-size: .8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.2;
}

.bar-tags {
    display: flex;
    flex-wrap: nowrap;
    gap: 3px;
}
.bar-tag {
    font-family: var(--font-mono);
    font-size: .6rem;
    color: var(--text-dim);
    background: var(--bg-card);
    padding: 1px 5px;
    border-radius: 2px;
}

.bar-expand-hint {
    font-size: .6rem;
    color: var(--text-dim);
    margin-top: 2px;
}

/* Bar Details (Collapsible) */
.bar-details {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    z-index: 30;
    min-width: 300px;
    max-width: 400px;
}
.bar-details-content {
    padding: 16px;
}
.bar-details-content h4 {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.bar-summary {
    font-size: .85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}
.bar-highlights {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 12px;
}
.bar-highlights li {
    font-size: .8rem;
    color: var(--text-secondary);
    padding-left: 16px;
    position: relative;
    line-height: 1.4;
}
.bar-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--amber);
}
.bar-meta-footer {
    display: flex;
    gap: 16px;
    font-size: .7rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}
.meta-label {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .timeline-axis-vertical {
        width: 60px;
        min-width: 60px;
    }
    .bar-info {
        min-width: 160px;
        padding: 6px 10px;
    }
    .bar-title {
        font-size: .7rem;
    }
    .bar-details {
        min-width: 250px;
        max-width: 300px;
    }
    .node-marker {
        width: 14px;
        height: 14px;
        font-size: .6rem;
    }
}

/* ── Archive Grid ────────────────────────────────────────────── */
.archive-controls {
    margin-bottom: 24px;
}
.archive-search {
    position: relative;
    margin-bottom: 12px;
}
.archive-search-input {
    width: 100%;
    padding: 12px 16px 12px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: .9rem;
    outline: none;
    transition: border-color .2s;
}
.archive-search-input:focus {
    border-color: var(--amber-dim);
}
.archive-search-input::placeholder {
    color: var(--text-dim);
}
.archive-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: .9rem;
    pointer-events: none;
}

.archive-count {
    font-size: .75rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    margin-top: 8px;
}

.archive-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.archive-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    transition: all .3s;
}
.archive-card:hover {
    border-color: var(--amber-dim);
    background: var(--bg-card-hover);
}

.archive-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}
.archive-code {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--amber);
    font-weight: 500;
}
.archive-credits {
    font-family: var(--font-mono);
    font-size: .7rem;
    color: var(--text-dim);
}

.archive-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.archive-meta {
    display: flex;
    gap: 8px;
    font-size: .8rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.archive-prof { }
.archive-sem {
    color: var(--text-dim);
}
.archive-prof::after {
    content: '·';
    margin-left: 8px;
    color: var(--text-dim);
}

.archive-desc {
    font-size: .85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.archive-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 12px;
}
.archive-tag {
    font-family: var(--font-mono);
    font-size: .68rem;
    color: var(--text-dim);
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: 4px;
}

.archive-materials {
    border-top: 1px solid var(--border-subtle);
    padding-top: 12px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}
.materials-label {
    font-size: .72rem;
    color: var(--text-dim);
    font-weight: 600;
}
.material-chip {
    font-size: .7rem;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    padding: 3px 10px;
    border-radius: 4px;
}

/* ── Unified Archive Cards ──────────────────────────────────── */
.archive-card {
    display: flex; flex-direction: column;
}

/* Archive filter states */
.archive-card.archive-card--hidden {
    display: none !important;
}
.archive-type {
    font-size: .72rem; color: var(--text-dim);
    padding: 1px 8px; border: 1px solid var(--border-subtle);
    border-radius: 10px;
}

/* File count summary */
.archive-resources-summary {
    margin: 8px 0;
}
.resources-count {
    font-family: var(--font-mono);
    font-size: .72rem; color: var(--amber);
    padding: 4px 10px;
    background: var(--amber-dim);
    border-radius: var(--radius-sm);
    display: inline-block;
}
.resources-count--empty {
    color: #555;
    background: transparent;
    padding-left: 0;
}

/* Detail link at bottom of expanded card */
.archive-detail-link {
    display: inline-flex; align-items: center; gap: 8px;
    align-self: flex-start;
    margin-top: 12px; padding: 6px 16px;
    font-family: var(--font-mono); font-size: .72rem; font-weight: 600;
    color: var(--amber); text-decoration: none;
    border: 1px solid var(--amber-dim); border-radius: 16px;
    transition: all .2s;
}
.archive-detail-link:hover {
    background: var(--amber-dim); color: var(--amber);
}
.detail-badge {
    font-size: .62rem; padding: 1px 6px; border-radius: 8px;
    background: var(--amber-dim); font-weight: 500;
}


/* ── Contact ─────────────────────────────────────────────────── */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input {
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: .9rem;
    outline: none;
    transition: border-color .2s;
    resize: vertical;
}
.form-input:focus {
    border-color: var(--amber-dim);
}
.form-input::placeholder {
    color: var(--text-dim);
}

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

.form-hint {
    font-size: .7rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    text-align: right;
}

.form-errors {
    background: var(--red-dim);
    border: 1px solid rgba(239,68,68,.25);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 8px;
}
.form-error {
    font-size: .85rem;
    color: #fca5a5;
}
.form-error + .form-error { margin-top: 4px; }

.form-success {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}
.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--green-dim);
    color: var(--green);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.form-success h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}
.form-success p {
    color: var(--text-secondary);
    font-size: .95rem;
    margin-bottom: 20px;
}
.form-success-id {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-dim);
    margin-bottom: 16px;
}

/* Contact info sidebar */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    transition: all .3s;
}
.contact-card:hover {
    border-color: var(--amber-dim);
}
.contact-card-icon {
    font-size: 1.3rem;
    display: block;
    margin-bottom: 6px;
}
.contact-card h3 {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: 2px;
}
.contact-card p {
    font-size: .85rem;
    color: var(--text-secondary);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-sans);
    font-size: .9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all .25s;
    text-decoration: none;
}
.btn--primary {
    background: var(--amber);
    color: #0a0a0f;
}
.btn--primary:hover {
    background: #fbbf24;
    color: #0a0a0f;
}
.btn--outline {
    background: transparent;
    color: var(--amber);
    border: 1px solid var(--amber-dim);
}
.btn--outline:hover {
    background: var(--amber-dim);
    color: var(--amber);
}

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-dim);
}
.empty-icon { font-size: 3rem; display: block; margin-bottom: 12px; }
.empty-state p { font-size: .95rem; }

/* ── Animations ──────────────────────────────────────────────── */
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}
@keyframes hero-logo-float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-15px) scale(1.02); }
}
@keyframes ring-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ── Responsive: Tablet (≥640px) ─────────────────────────────── */
@media (min-width: 640px) {
    .hero-visual { display: block; width: 200px; height: 200px; }
    .hero-orb { width: 160px; height: 160px; margin: -80px 0 0 -80px; }
    .hero-orb--small { width: 70px; height: 70px; margin: -35px 0 0 30px; }
    .hero-ring { width: 150px; height: 150px; margin: -75px 0 0 -75px; }

    .card-grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-layout {
        grid-template-columns: 1fr 240px;
    }
}

/* ── Responsive: Desktop (≥960px) ────────────────────────────── */
@media (min-width: 960px) {
    .hero-visual { display: block; width: 300px; height: 300px; }
    .hero-orb { width: 220px; height: 220px; margin: -110px 0 0 -110px; }
    .hero-orb--small { width: 100px; height: 100px; margin: -50px 0 0 40px; }
    .hero-ring { width: 200px; height: 200px; margin: -100px 0 0 -100px; }

    .card-grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Timeline alternating layout */
    .timeline-line { left: 50%; margin-left: -1px; }

    .timeline-item {
        padding-left: 0;
        width: 50%;
    }
    .timeline-item--left {
        padding-right: 50px;
        margin-left: 0;
    }
    .timeline-item--right {
        margin-left: 50%;
        padding-left: 50px;
    }

    .timeline-marker {
        left: auto;
    }
    .timeline-item--left .timeline-marker {
        right: -12px;
    }
    .timeline-item--right .timeline-marker {
        left: -12px;
    }
}

/* ── Responsive: Mobile Nav (<640px) ─────────────────────────── */
@media (max-width: 639px) {
    .nav-toggle { display: flex; }
    .nav-list {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(17,17,24,.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-subtle);
        padding: 12px;
        gap: 2px;
    }
    .nav-open .nav-list { display: flex; }
    .nav-link { padding: 12px 16px; border-radius: var(--radius-sm); }
}