/* ================================================================
   AI-Native Builders — Design System
   Source code terminal aesthetic

   STYLE GUIDE:
   Before adding a new class, check if an existing one works.
   Prefer composing utility classes over creating new components.

   SECTIONS:
   1. Tokens          — CSS custom properties
   2. Reset & Base    — box model, body, links
   3. Infrastructure  — canvas, HUD overlays, grain
   4. Typography      — headings, body text, code
   5. Layout          — container, sections, grids
   6. Terminal Window  — core reusable component
   7. Syntax          — code highlighting classes
   8. Navigation      — nav bar
   9. Buttons & Pills — all interactive elements
   10. Cards          — terminal-window card variants
   11. Forms          — inputs, labels, groups
   12. Footer         — footer component
   13. Auth           — login-state visibility
   14. Animations     — keyframes, reveals
   15. Responsive     — all breakpoints
   ================================================================ */

/* ============================================
   1. TOKENS
   ============================================ */
:root {
    /* Surfaces */
    --bg:            #0c0e14;
    --bg-alt:        #10131a;
    --surface:       #151921;
    --surface-up:    #1a1f2b;
    --surface-hover: #1f2636;

    /* Borders */
    --border:        rgba(255, 255, 255, 0.06);
    --border-hover:  rgba(255, 255, 255, 0.1);
    --border-active: rgba(255, 255, 255, 0.15);

    /* Terminal chrome dots */
    --dot-red:       #ff5f57;
    --dot-yellow:    #ffbd2e;
    --dot-green:     #28c840;

    /* Accent: cyan */
    --cyan:          #00d4ff;
    --cyan-dim:      rgba(0, 212, 255, 0.12);
    --cyan-glow:     rgba(0, 212, 255, 0.25);

    /* Accent: violet */
    --violet:        #8b5cf6;
    --violet-dim:    rgba(139, 92, 246, 0.1);

    /* Semantic */
    --success:       #28c840;
    --error:         #ff5f57;
    --warning:       #ffbd2e;

    /* Syntax highlighting */
    --syn-kw:        #00d4ff;
    --syn-str:       #a78bfa;
    --syn-num:       #f0abfc;
    --syn-var:       #e8eaed;
    --syn-comment:   #4b5563;
    --syn-prompt:    #00d4ff;

    /* Text */
    --text:          #e8eaed;
    --text-2:        #9ca3af;
    --text-3:        #6b7280;
    --text-inv:      #0c0e14;

    /* Typography */
    --font-mono:     'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;
    --font-body:     'Outfit', sans-serif;

    /* Spacing scale */
    --sp-1: 0.25rem; --sp-2: 0.5rem;  --sp-3: 0.75rem; --sp-4: 1rem;
    --sp-6: 1.5rem;  --sp-8: 2rem;    --sp-10: 2.5rem; --sp-12: 3rem;
    --sp-16: 4rem;   --sp-20: 5rem;   --sp-24: 6rem;

    /* Radius scale */
    --r-sm: 4px; --r-md: 8px; --r-lg: 12px; --r-xl: 16px; --r-full: 9999px;

    /* Motion */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --transition:    0.3s var(--ease-out-expo);

    /* Layout */
    --nav-h: 52px;
    --max-w: 1200px;
}

/* ============================================
   1b. LIGHT THEME — applied via data-theme="light" on <body>
   ============================================ */
[data-theme="light"] {
    --bg:            #f8f9fa;
    --bg-alt:        #ffffff;
    --surface:       #ffffff;
    --surface-up:    #f0f1f3;
    --surface-hover: #e8e9eb;

    --border:        rgba(0, 0, 0, 0.08);
    --border-hover:  rgba(0, 0, 0, 0.12);
    --border-active: rgba(0, 0, 0, 0.18);

    --cyan:          #0891b2;
    --cyan-dim:      rgba(8, 145, 178, 0.08);
    --cyan-glow:     rgba(8, 145, 178, 0.15);

    --violet:        #7c3aed;
    --violet-dim:    rgba(124, 58, 237, 0.06);

    --syn-kw:        #0891b2;
    --syn-str:       #7c3aed;
    --syn-num:       #c026d3;
    --syn-var:       #1e293b;
    --syn-comment:   #94a3b8;
    --syn-prompt:    #0891b2;

    --text:          #1e293b;
    --text-2:        #475569;
    --text-3:        #94a3b8;
    --text-inv:      #ffffff;

    --success:       #16a34a;
    --error:         #dc2626;
    --warning:       #d97706;
}

/* Light theme: disable grain overlay */
[data-theme="light"]::after { opacity: 0; }

/* Light theme: hide flow field canvas */
[data-theme="light"] #flow-field { opacity: 0; }

/* Light theme: nav adjustments */
[data-theme="light"] nav {
    background: rgba(255, 255, 255, 0.9);
    border-bottom-color: var(--border);
}
[data-theme="light"] nav.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

/* Light theme: terminal chrome */
[data-theme="light"] .terminal-chrome { background: var(--surface-up); }

/* Light theme: shadows */
[data-theme="light"] .terminal-window:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08); }
[data-theme="light"] .terminal-lift:hover { box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1); }

/* Light theme: buttons */
[data-theme="light"] .btn-primary, [data-theme="light"] .btn-primary-xl {
    box-shadow: 0 2px 8px rgba(8, 145, 178, 0.2);
}
[data-theme="light"] .btn-primary:hover, [data-theme="light"] .btn-primary-xl:hover {
    box-shadow: 0 4px 16px rgba(8, 145, 178, 0.3);
}

/* Light theme: footer */
[data-theme="light"] footer { background: var(--surface-up); }

/* Light theme: nav dropdown */
[data-theme="light"] .nav-dropdown-menu { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1); }
[data-theme="light"] .nav-avatar-btn:hover .nav-avatar { border-color: rgba(8, 145, 178, 0.4); }

/* Light theme: HUD panels hidden (genetic algorithm not visible) */
[data-theme="light"] .hud-panel { display: none; }

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

html {
    background: var(--bg);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ============================================
   3. INFRASTRUCTURE
   ============================================ */

/* Noise grain overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    opacity: 0.015;
    pointer-events: none;
    z-index: 5;
}

/* Flow field canvas */
#flow-field {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

/* HUD panels (genetic algorithm stats) */
.hud-panel {
    position: fixed;
    z-index: 9999;
    pointer-events: none;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-2);
    opacity: 0.5;
    background: rgba(12, 14, 20, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.02);
    border-radius: var(--r-md);
    padding: 12px 14px;
    white-space: pre;
    overflow: hidden;
}

.hud-left  { top: 70px; left: 14px; min-width: 260px; }
.hud-right { top: 70px; right: 14px; max-height: 80vh; background: transparent; border: none; overflow: hidden; }
@media (max-width: 768px) { .hud-panel { display: none; } }

.hud-panel .hud-header { color: rgba(75, 85, 99, 0.8); }
.hud-panel .hud-cyan   { color: rgba(0, 212, 255, 0.8); }
.hud-panel .hud-green  { color: rgba(40, 200, 64, 0.8); }
.hud-panel .hud-violet { color: rgba(139, 92, 246, 0.75); }
.hud-panel .hud-pink   { color: rgba(240, 171, 252, 0.75); }
.hud-panel .hud-yellow { color: rgba(255, 189, 46, 0.75); }
.hud-panel .hud-red    { color: rgba(255, 95, 87, 0.75); }
.hud-panel .hud-dim    { color: rgba(75, 85, 99, 0.6); }

.hud-bar-track { display: inline-block; width: 80px; height: 6px; background: rgba(255, 255, 255, 0.06); border-radius: 2px; vertical-align: middle; margin-left: 6px; }
.hud-bar-fill  { display: block; height: 100%; border-radius: 2px; }
#hud-right canvas { display: block; }

/* ============================================
   4. TYPOGRAPHY
   ============================================ */

/* Section heading — used across all pages */
.section-heading {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text);
    text-align: center;
    margin-bottom: var(--sp-8);
}

/* Section label — "// filename.ts" style above headings */
.section-label {
    font-size: 0.75rem;
    color: var(--syn-comment);
    text-align: center;
    margin-bottom: var(--sp-4);
}

/* Body text inside terminal windows */
.body-text {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-2);
    line-height: 1.7;
}

/* ============================================
   5. LAYOUT
   ============================================ */

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--sp-6);
}

/* Standard section — consistent spacing + stacking */
.section {
    position: relative;
    z-index: 1;
    padding: var(--sp-16) 0;
}

.section-lg { padding: var(--sp-20) 0; }

/* 2-column layout with sidebar */
.page-layout-2col {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--sp-10);
    align-items: start;
}

.main-content { min-width: 0; width: 100%; }

.sidebar {
    position: sticky;
    top: calc(var(--nav-h) + var(--sp-4));
    display: flex;
    flex-direction: column;
}

.sidebar-profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-2);
}

.sidebar-profile .card-avatar, .sidebar-profile .user-avatar {
    width: 64px;
    height: 64px;
    border-radius: var(--r-lg);
}

.sidebar-profile .card-author-info { display: flex; flex-direction: column; align-items: center; gap: var(--sp-1); }
.sidebar-profile .card-author { font-size: 0.8rem; }
.sidebar-profile .code-comment { font-size: 0.65rem; }

.sidebar-stats {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.sidebar-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--sp-1) 0;
}

.sidebar-stat .stat-value {
    font-weight: 700;
    color: var(--text);
    font-size: 0.85rem;
}

/* Responsive grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-6); }

/* Utility */
.centered { text-align: center; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-2 { gap: var(--sp-2); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.gap-8 { gap: var(--sp-8); }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }

/* ============================================
   6. TERMINAL WINDOW — Core reusable component
   ============================================ */
.terminal-window {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.terminal-window:hover {
    border-color: var(--border-hover);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* Chrome bar: red/yellow/green dots + title */
.terminal-chrome {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-4);
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red    { background: var(--dot-red); }
.dot-yellow { background: var(--dot-yellow); }
.dot-green  { background: var(--dot-green); }

.terminal-title {
    margin-left: var(--sp-3);
    font-size: 0.75rem;
    color: var(--text-3);
    font-weight: 500;
}

.terminal-status {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--dot-green);
    font-weight: 600;
}

.terminal-body {
    padding: var(--sp-6);
}

.terminal-body-lg {
    padding: var(--sp-8);
}

/* Lift variant — cards that rise on hover */
.terminal-lift:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, 0.15);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--cyan-dim);
}

/* ============================================
   7. SYNTAX HIGHLIGHTING
   ============================================ */
.kw      { color: var(--syn-kw); font-weight: 600; }
.str     { color: var(--syn-str); }
.num     { color: var(--syn-num); font-weight: 700; font-size: 1.75em; }
.var     { color: var(--syn-var); }
.prompt  { color: var(--syn-prompt); font-weight: 700; }

.code-comment        { color: var(--syn-comment); font-size: 0.85em; }
.code-comment.indent { padding-left: var(--sp-6); }

.cmd-prefix { color: var(--text-3); margin-right: var(--sp-1); }
.cmd-arg    { color: var(--cyan); }
.cmd-arrow  { color: var(--cyan); }

/* Blinking cursor */
.cursor-blink { color: var(--cyan); animation: blink 1s step-end infinite; }

/* Stat line: "const x = 42 ;" */
.stat-line { font-size: 0.9rem; line-height: 2; color: var(--text-2); }

/* JSDoc block */
.jsdoc { line-height: 1.8; }
.jsdoc-open, .jsdoc-close { color: var(--syn-comment); }
.jsdoc-star { color: var(--syn-comment); margin-right: var(--sp-2); }
.jsdoc-line { color: var(--text-2); padding-left: var(--sp-3); }

/* Code block: manifesto/config style */
.code-block { font-size: 0.9rem; line-height: 2; color: var(--text-2); }
.code-indent { padding-left: var(--sp-6); }

/* ============================================
   8. NAVIGATION
   ============================================ */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(12, 14, 20, 0.85);
    backdrop-filter: blur(20px) saturate(1.2);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

nav.scrolled {
    background: rgba(12, 14, 20, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--sp-6);
    display: flex;
    align-items: center;
    height: var(--nav-h);
    gap: var(--sp-6);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    flex-shrink: 0;
}

.nav-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--dot-green);
    box-shadow: 0 0 8px rgba(40, 200, 64, 0.4);
}

.nav-path {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text);
}

.nav-cursor {
    width: 2px;
    height: 14px;
    background: var(--cyan);
    animation: blink 1s step-end infinite;
    margin-left: 1px;
}

.nav-commands {
    display: flex;
    gap: var(--sp-1);
    flex: 1;
    justify-content: center;
}

.nav-actions { flex-shrink: 0; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--sp-2);
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
    display: block;
}

/* Nav user dropdown */
.nav-user-dropdown { position: relative; }

.nav-avatar-btn {
    background: none !important;
    border: none !important;
    padding: 0 !important;
    cursor: pointer;
    box-shadow: none !important;
    display: flex;
    align-items: center;
}

.nav-avatar-btn:hover { transform: none; }

.nav-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.nav-avatar-btn:hover .nav-avatar { border-color: rgba(0, 212, 255, 0.4); }

.nav-user-name { font-size: 0.75rem; color: var(--text-2); font-weight: 500; margin-left: var(--sp-2); }

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--sp-2);
    min-width: 180px;
    background: var(--surface);
    border: 1px solid var(--border-hover);
    border-radius: var(--r-md);
    padding: var(--sp-2);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
    z-index: 1100;
}

.nav-user-dropdown.open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-item {
    display: block;
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
    color: var(--text-3);
    border-radius: var(--r-sm);
    transition: background 0.15s, color 0.15s;
}

.nav-dropdown-item:hover {
    background: var(--cyan-dim);
    color: var(--text);
}

/* ============================================
   9. BUTTONS & PILLS
   ============================================ */

/* Base: shared by all interactive pill/button elements */
.pill {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-3);
    padding: 0.35rem 0.75rem;
    border-radius: var(--r-md);
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
}

.pill:hover {
    color: var(--text);
    background: var(--surface);
    border-color: var(--border);
}

.pill.active {
    color: var(--cyan);
    background: var(--cyan-dim);
    border-color: rgba(0, 212, 255, 0.15);
}

/* Nav command — pill with sign-in variant */
.nav-cmd { /* inherits .pill styling via same properties */ }
.nav-cmd {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-3);
    padding: 0.35rem 0.75rem;
    border-radius: var(--r-md);
    border: 1px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}
.nav-cmd:hover { color: var(--text); background: var(--surface); border-color: var(--border); }
.nav-cmd.active { color: var(--cyan); background: var(--cyan-dim); border-color: rgba(0, 212, 255, 0.15); }

.sign-in { border-color: var(--border-hover) !important; }
.sign-in:hover { border-color: var(--cyan) !important; color: var(--cyan) !important; }

/* Button base */
.btn {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: var(--r-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    text-decoration: none;
}

/* Primary — cyan solid */
.btn-primary, .btn-primary-xl {
    color: var(--text-inv);
    background: var(--cyan);
    box-shadow: 0 4px 20px var(--cyan-dim);
}

.btn-primary:hover, .btn-primary-xl:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--cyan-glow);
}

/* Ghost — transparent with border */
.btn-ghost {
    color: var(--text-2);
    background: transparent;
    border: 1px solid var(--border-hover);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: rgba(0, 212, 255, 0.25);
    background: rgba(0, 212, 255, 0.04);
    transform: translateY(-2px);
}

/* Danger */
.btn-danger {
    color: var(--text);
    background: rgba(255, 95, 87, 0.15);
    border: 1px solid rgba(255, 95, 87, 0.3);
}

.btn-danger:hover {
    background: rgba(255, 95, 87, 0.25);
    border-color: rgba(255, 95, 87, 0.5);
}

/* Small variant */
.btn-sm { font-size: 0.75rem; padding: 0.4rem 1rem; }

/* ============================================
   10. CARDS — Terminal window content variants
   ============================================ */

/* Card metadata: "from" line, date, footer */
.card-from { font-size: 0.8rem; margin-bottom: var(--sp-4); }
.card-desc { font-family: var(--font-body); font-size: 0.9rem; color: var(--text-2); line-height: 1.7; margin-bottom: var(--sp-6); }
.card-footer { display: flex; justify-content: space-between; align-items: center; padding-top: var(--sp-4); border-top: 1px solid var(--border); }
.card-date { font-size: 0.7rem; color: var(--text-3); }

/* Blog card — author row, stats, actions, preview comments */
.card-author-row { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-4); }
.card-avatar, .user-avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border-hover); flex-shrink: 0; }
.card-avatar-sm { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.card-author { color: var(--text); font-size: 0.8rem; font-weight: 600; display: block; }
.card-author-info { display: flex; flex-direction: column; gap: var(--sp-1); }
.card-title-link { text-decoration: none; }
.card-title-link h3 { color: var(--text); font-size: 1rem; margin-bottom: var(--sp-1); }
.card-title-link:hover h3 { color: var(--cyan); }
.card-subtitle { color: var(--text-3); font-size: 0.8rem; display: block; margin-bottom: var(--sp-2); }
.pill.tag { cursor: pointer; font-size: 0.7rem; }
.pill.tag:hover { color: var(--cyan); border-color: var(--cyan); }
.card-stats { display: flex; align-items: center; gap: var(--sp-4); font-size: 0.75rem; color: var(--text-3); margin-bottom: var(--sp-3); }
.card-stats-right { margin-left: auto; display: flex; gap: var(--sp-2); }
.card-desc-box {
    padding-top: var(--sp-3);
    margin-top: var(--sp-3);
    border-top: 1px solid var(--border);
    position: relative;
}
.card-desc-box::before {
    content: "// description";
    position: absolute;
    top: -0.55em;
    left: 0;
    font-size: 0.6rem;
    color: var(--syn-comment);
    background: var(--surface);
    padding-right: var(--sp-2);
}

.card-actions {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding-top: var(--sp-3);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    position: relative;
}
.card-actions::before {
    content: "// tags";
    position: absolute;
    top: -0.55em;
    left: 0;
    font-size: 0.6rem;
    color: var(--syn-comment);
    background: var(--surface);
    padding-right: var(--sp-2);
}
.card-actions::after {
    content: "social //";
    position: absolute;
    top: -0.55em;
    right: 0;
    font-size: 0.6rem;
    color: var(--syn-comment);
    background: var(--surface);
    padding-left: var(--sp-2);
}
.card-actions-right { margin-left: auto; display: flex; gap: var(--sp-2); }
.card-action-btn { cursor: pointer; }
.card-featured-pill { margin-left: auto; }

/* Share popover */
.share-popover-wrap { position: relative; display: inline-block; }
.share-popover {
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: var(--sp-2);
    min-width: 160px;
    background: var(--surface);
    border: 1px solid var(--border-hover);
    border-radius: var(--r-md);
    padding: var(--sp-2);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
    z-index: 100;
}
.share-popover.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* Kebab menu (⋮ on cards/comments — owner only) */
.kebab-menu-wrap { position: relative; margin-left: auto; }

.kebab-btn {
    all: unset;
    display: inline-block;
    color: var(--text-2);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--sp-1) var(--sp-2);
    border-radius: var(--r-sm);
}
.kebab-btn:hover {
    color: var(--cyan);
    background: var(--cyan-dim);
}

.kebab-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--sp-1);
    min-width: 140px;
    background: var(--surface);
    border: 1px solid var(--border-hover);
    border-radius: var(--r-md);
    padding: var(--sp-2);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
    z-index: 100;
}
.kebab-dropdown.show { opacity: 1; visibility: visible; transform: translateY(0); }

.kebab-item {
    all: unset;
    display: block;
    width: 100%;
    padding: 0.4rem 0.6rem;
    font-size: 0.75rem;
    color: var(--text-3);
    border-radius: var(--r-sm);
    cursor: pointer;
    font-family: var(--font-mono);
    box-sizing: border-box;
}
.kebab-item:hover { background: var(--cyan-dim); color: var(--text); }
.kebab-item.danger { color: var(--error); }
.kebab-item.danger:hover { background: rgba(255, 95, 87, 0.1); }

[data-theme="light"] .kebab-dropdown { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1); }

[data-theme="light"] .share-popover { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1); }
.card-comments {
    margin-top: var(--sp-4);
    padding-top: var(--sp-3);
    border-top: 1px solid var(--border);
    position: relative;
}

.card-comments::before {
    content: "// comments";
    position: absolute;
    top: -0.55em;
    left: var(--sp-2);
    font-size: 0.6rem;
    color: var(--syn-comment);
    background: var(--surface);
    padding: 0 var(--sp-2);
}
.card-comment { display: flex; align-items: flex-start; gap: var(--sp-2); margin-bottom: var(--sp-2); font-size: 0.8rem; }
.card-comment-body { color: var(--text-2); font-size: 0.8rem; margin: var(--sp-1) 0 0; }
.card-comment-meta { color: var(--text); font-weight: 500; }

/* Comment section — full post view */
.comment {
    margin-bottom: var(--sp-4);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--border);
}
.comment:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.comment-indent-1 { margin-left: var(--sp-8); }
.comment-indent-2 { margin-left: calc(var(--sp-8) * 2); }
.comment-indent-3 { margin-left: calc(var(--sp-8) * 3); }
.comment-header { display: flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-2); }
.comment-author { color: var(--text); font-weight: 600; font-size: 0.8rem; }
.comment-time { color: var(--text-3); font-size: 0.7rem; }
.comment-body { color: var(--text-2); font-size: 0.85rem; line-height: 1.6; }
.comment-actions { display: flex; gap: var(--sp-2); margin-top: var(--sp-2); }

/* Search bar inside terminal */
.search-line { display: flex; align-items: center; gap: var(--sp-2); font-size: 0.85rem; }
.search-placeholder { color: var(--text-3); font-size: 0.8rem; }

/* Sort/filter bar */
.sort-bar { display: flex; align-items: center; justify-content: center; gap: var(--sp-2); flex-wrap: wrap; }
.sort-label { font-size: 0.75rem; color: var(--text-3); margin-right: var(--sp-2); }

/* Chart (growth bars) */
.chart-body { padding: var(--sp-8) var(--sp-6) var(--sp-4); }
.chart-bars { display: flex; align-items: flex-end; gap: var(--sp-3); height: 160px; padding-bottom: var(--sp-6); border-bottom: 1px solid var(--border); }
.chart-bar { flex: 1; height: var(--h); background: linear-gradient(180deg, var(--cyan-dim) 0%, rgba(0, 212, 255, 0.04) 100%); border: 1px solid rgba(0, 212, 255, 0.15); border-radius: var(--r-sm) var(--r-sm) 0 0; position: relative; transition: all 0.3s; }
.chart-bar:hover { background: linear-gradient(180deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 212, 255, 0.06) 100%); border-color: rgba(0, 212, 255, 0.3); }
.chart-bar.bar-current { background: linear-gradient(180deg, rgba(0, 212, 255, 0.25) 0%, rgba(0, 212, 255, 0.08) 100%); border-color: rgba(0, 212, 255, 0.3); box-shadow: 0 0 20px var(--cyan-dim); }
.chart-bar span { position: absolute; bottom: -22px; left: 50%; transform: translateX(-50%); font-size: 0.65rem; color: var(--text-3); }
.chart-label { text-align: center; font-size: 0.7rem; color: var(--text-3); margin-top: var(--sp-6); }

/* ============================================
   10b. TABLES
   ============================================ */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.table th {
    text-align: left;
    padding: var(--sp-3) var(--sp-4);
    border-bottom: 2px solid var(--border-hover);
    color: var(--cyan);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: var(--sp-3) var(--sp-4);
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
}

.table-striped tr:nth-child(even) td {
    background: var(--surface-up);
}

.table tr:hover td {
    background: var(--surface-hover);
}

.table .status-active { color: var(--success); }
.table .status-locked { color: var(--error); }
.table .status-pending { color: var(--warning); }

/* ============================================
   11. FORMS
   ============================================ */
.form-group { margin-bottom: var(--sp-6); }

.form-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-2);
    margin-bottom: var(--sp-2);
}

.form-input {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border-hover);
    border-radius: var(--r-md);
    padding: 0.65rem var(--sp-4);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 2px var(--cyan-dim);
}

.form-input::placeholder { color: var(--text-3); }

.input-toggle-wrap { position: relative; }
.input-toggle-wrap .form-input { padding-right: var(--sp-16); }
.input-toggle-btn {
    position: absolute;
    right: var(--sp-2);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--syn-comment);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    cursor: pointer;
    padding: var(--sp-1) var(--sp-2);
    box-shadow: none;
}
.input-toggle-btn:hover { color: var(--cyan); transform: translateY(-50%); }

.form-hint {
    font-size: 0.7rem;
    color: var(--text-3);
    margin-top: var(--sp-1);
}

.form-error {
    font-size: 0.7rem;
    color: var(--error);
    margin-top: var(--sp-1);
}

/* ============================================
   12. FOOTER
   ============================================ */
footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    padding: var(--sp-10) 0 var(--sp-6);
}

.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--sp-6);
    display: flex;
    justify-content: space-between;
    gap: var(--sp-16);
}

.footer-brand { max-width: 400px; }
.footer-brand p { font-family: var(--font-body); font-size: 0.85rem; color: var(--text-3); line-height: 1.7; margin-top: var(--sp-3); }

.footer-links { display: flex; gap: var(--sp-12); }
.footer-col { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-col .code-comment { margin-bottom: var(--sp-2); }
.footer-col a { font-size: 0.8rem; color: var(--text-3); transition: color 0.2s; }
.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
    max-width: var(--max-w);
    margin: var(--sp-8) auto 0;
    padding: var(--sp-4) var(--sp-6) 0;
    border-top: 1px solid var(--border);
    font-size: 0.7rem;
}

/* Toast container (OOB alerts) */
.toast-container { position: fixed; bottom: 1rem; right: 1rem; z-index: 800; display: flex; flex-direction: column; gap: 0.5rem; pointer-events: none; }

/* ============================================
   13. AUTH VISIBILITY
   ============================================ */
[data-show-when-logged-in] { display: none !important; }
body.logged-in [data-show-when-logged-in] { display: revert !important; }
body.logged-in [data-hide-when-logged-in] { display: none !important; }

[data-admin-only] { display: none !important; }
body.user-is-admin [data-admin-only] { display: revert !important; }

[data-moderator-only] { display: none !important; }
body.user-is-moderator [data-moderator-only],
body.user-is-admin [data-moderator-only] { display: revert !important; }

.hidden { display: none !important; }

/* ============================================
   14. ANIMATIONS
   ============================================ */
@keyframes blink { 50% { opacity: 0; } }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Hero staggered entrance */
.hero .terminal-window { opacity: 0; animation: fadeUp 0.8s var(--ease-out-expo) forwards; }
.hero .terminal-window:nth-child(1) { animation-delay: 0.1s; }
.hero .terminal-window:nth-child(2) { animation-delay: 0.25s; }
.hero .terminal-window:nth-child(3) { animation-delay: 0.4s; }

.hero-cta { opacity: 0; animation: fadeUp 0.7s var(--ease-out-expo) 0.55s forwards; }

.hero-side .terminal-window { opacity: 0; animation: fadeUp 0.8s var(--ease-out-expo) forwards; }
.hero-side .terminal-window:nth-child(1) { animation-delay: 0.3s; }
.hero-side .terminal-window:nth-child(2) { animation-delay: 0.5s; }

/* Scroll-triggered reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo); }
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-stagger > * { opacity: 0; transform: translateY(16px); transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo); }
.reveal-stagger.visible > *:nth-child(1)  { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2)  { transition-delay: 0.12s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3)  { transition-delay: 0.19s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4)  { transition-delay: 0.26s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5)  { transition-delay: 0.33s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6)  { transition-delay: 0.40s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(n+7) { transition-delay: 0.45s; opacity: 1; transform: translateY(0); }

/* ============================================
   15. RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero-layout { grid-template-columns: 1fr; }
    .page-layout-2col { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}

@media (max-width: 768px) {
    .nav-commands, .nav-actions { display: none; }
    .nav-toggle { display: flex; }

    .nav-commands.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(12, 14, 20, 0.97);
        backdrop-filter: blur(20px);
        padding: var(--sp-4) var(--sp-6);
        gap: var(--sp-2);
        border-bottom: 1px solid var(--border);
    }

    .nav-actions.open {
        display: flex;
        position: fixed;
        top: calc(var(--nav-h) + 220px);
        left: 0; right: 0;
        background: rgba(12, 14, 20, 0.97);
        padding: var(--sp-3) var(--sp-6) var(--sp-4);
        border-bottom: 1px solid var(--border);
    }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

    .footer-inner { flex-direction: column; gap: var(--sp-6); }
    .footer-links { gap: var(--sp-6); }

    .sort-bar { flex-wrap: wrap; }
    .code-indent { padding-left: var(--sp-3); }

    .btn, .btn-primary-xl, .btn-ghost { width: 100%; justify-content: center; }
}

/* ============================================
   16. PAGE: HERO (index.html specific)
   ============================================ */
.hero {
    position: relative;
    z-index: 1;
    padding: calc(var(--nav-h) + var(--sp-12)) var(--sp-6) var(--sp-16);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 25%; left: 35%;
    width: 600px; height: 500px;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.06) 0%, rgba(139, 92, 246, 0.03) 40%, transparent 70%);
    pointer-events: none;
    filter: blur(50px);
}

.hero-layout {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--sp-8);
    align-items: start;
    width: 100%;
}

.hero-main { display: flex; flex-direction: column; gap: var(--sp-6); }
.hero-side { display: flex; flex-direction: column; gap: var(--sp-6); }

.hero h1 {
    font-family: var(--font-mono);
    font-size: clamp(2.4rem, 5.5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text);
}

.hero .code-tagline { font-size: 1rem; color: var(--text-2); }
.hero .code-comment { margin-bottom: var(--sp-2); }

.hero-cta {
    display: flex;
    gap: var(--sp-4);
    flex-wrap: wrap;
    margin-top: var(--sp-4);
}

@media (max-width: 768px) {
    .hero { min-height: auto; padding-bottom: var(--sp-10); }
    .hero-cta { flex-direction: column; align-items: center; }
}
