/* ============================================================
   DemoHub – Main Public Stylesheet (White / Light Theme)
   Clean · Professional · Modern SaaS Design
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Variables (Light Theme Tokens) --- */
:root {
    /* Backgrounds */
    --color-bg:         #f8f9fc;
    --color-surface:    #ffffff;
    --color-surface2:   #f3f4f8;
    --color-surface3:   #ebedf5;
    --color-surface4:   #e5e7ee;

    /* Borders */
    --color-border:     #e2e5ef;
    --color-border2:    #d1d5e8;

    /* Brand / Accent */
    --color-primary:    #5b21b6;
    --color-primary-h:  #4c1d95;
    --color-primary-l:  #7c3aed;
    --color-accent:     #7c3aed;
    --color-accent-l:   #a78bfa;
    --color-accent-bg:  #ede9fe;
    --color-accent-bg2: #ddd6fe;

    /* Text */
    --color-text:       #111827;
    --color-text2:      #374151;
    --color-text3:      #6b7280;
    --color-text4:      #9ca3af;

    /* Status */
    --color-success:    #059669;
    --color-success-bg: #d1fae5;
    --color-warning:    #d97706;
    --color-warning-bg: #fef3c7;
    --color-danger:     #dc2626;
    --color-danger-bg:  #fee2e2;
    --color-info:       #2563eb;
    --color-info-bg:    #dbeafe;

    /* Radius */
    --radius-xs:   4px;
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   14px;
    --radius-xl:   20px;
    --radius-2xl:  28px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs:   0 1px 2px rgba(17,24,39,.05);
    --shadow-sm:   0 1px 4px rgba(17,24,39,.08), 0 0 0 1px rgba(17,24,39,.04);
    --shadow-md:   0 4px 12px rgba(17,24,39,.10), 0 1px 3px rgba(17,24,39,.06);
    --shadow-lg:   0 8px 28px rgba(17,24,39,.12), 0 2px 8px rgba(17,24,39,.06);
    --shadow-xl:   0 16px 48px rgba(17,24,39,.14), 0 4px 12px rgba(17,24,39,.08);
    --shadow-card: 0 1px 3px rgba(17,24,39,.08), 0 0 0 1px rgba(17,24,39,.06);
    --shadow-card-h: 0 8px 24px rgba(91,33,182,.14), 0 1px 4px rgba(17,24,39,.08), 0 0 0 1px rgba(91,33,182,.12);

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --header-h: 68px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-l); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }
ul { list-style: none; }
input, select, textarea { font-family: var(--font); }

/* --- Layout --- */
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 52px 0; }
body { padding-top: var(--header-h); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 900;
    height: var(--header-h);
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 0 rgba(17,24,39,.06);
    transition: box-shadow var(--transition);
}
.site-header.scrolled {
    box-shadow: var(--shadow-md);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 100%; gap: 24px;
}

/* Logo */
.site-logo {
    display: flex; align-items: center; gap: 9px;
    font-weight: 800; font-size: 1.2rem; color: var(--color-text);
    letter-spacing: -0.03em; text-decoration: none; flex-shrink: 0;
}
.site-logo:hover { color: var(--color-primary); }
.logo-icon {
    width: 34px; height: 34px; border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-l) 100%);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 1.1rem; flex-shrink: 0;
}
.logo-text { color: var(--color-text); }
.logo-img { height: 34px; width: auto; }

/* Nav */
.main-nav { display: flex; align-items: center; gap: 2px; }
.nav-link {
    padding: 7px 14px; border-radius: var(--radius-sm);
    color: var(--color-text3); font-size: .875rem; font-weight: 500;
    transition: all var(--transition); text-decoration: none;
    white-space: nowrap;
}
.nav-link:hover { color: var(--color-text); background: var(--color-surface2); }
.nav-link.active { color: var(--color-primary); background: var(--color-accent-bg); }
.nav-admin {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-l) 100%);
    color: #fff !important; margin-left: 8px; border-radius: var(--radius-full) !important;
    padding: 8px 20px !important; font-size: .875rem;
    box-shadow: 0 2px 8px rgba(91,33,182,.3);
}
.nav-admin:hover { box-shadow: 0 4px 14px rgba(91,33,182,.4) !important; transform: translateY(-1px); color: #fff !important; }

/* Hamburger */
.hamburger {
    display: none; flex-direction: column; gap: 5px;
    width: 38px; height: 38px; padding: 8px;
    border-radius: var(--radius-sm); background: var(--color-surface2);
    border: 1px solid var(--color-border);
}
.hamburger span {
    display: block; height: 2px; background: var(--color-text3);
    border-radius: 2px; transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
    display: none; position: fixed; inset: 0; z-index: 850;
    background: rgba(17,24,39,.4); backdrop-filter: blur(4px);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    padding: 10px 22px; border-radius: var(--radius-md);
    font-size: .875rem; font-weight: 600; letter-spacing: -.01em;
    transition: all var(--transition); cursor: pointer; border: none;
    white-space: nowrap; text-decoration: none;
}
.btn-sm  { padding: 6px 14px; font-size: .8rem; border-radius: var(--radius-sm); }
.btn-lg  { padding: 12px 28px; font-size: .95rem; border-radius: var(--radius-md); }
.btn-xl  { padding: 16px 36px; font-size: 1rem; border-radius: var(--radius-lg); }

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-l) 100%);
    color: #fff; box-shadow: 0 2px 8px rgba(91,33,182,.3);
}
.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(91,33,182,.4); transform: translateY(-1px); color: #fff;
}
.btn-secondary {
    background: var(--color-surface); color: var(--color-text2);
    border: 1.5px solid var(--color-border); box-shadow: var(--shadow-xs);
}
.btn-secondary:hover { background: var(--color-surface2); border-color: var(--color-border2); color: var(--color-text); }
.btn-ghost { background: transparent; color: var(--color-text3); border: 1.5px solid var(--color-border); }
.btn-ghost:hover { background: var(--color-surface2); color: var(--color-text); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; color: #fff; }
.btn-success { background: var(--color-success); color: #fff; }
.btn-success:hover { opacity: .9; }
.btn-copy {
    background: var(--color-surface2); color: var(--color-text3);
    border: 1px solid var(--color-border); padding: 5px 12px; font-size: .78rem;
    border-radius: var(--radius-sm); font-weight: 600;
}
.btn-copy:hover { background: var(--color-surface3); color: var(--color-text); }
.btn-copy.copied { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: var(--radius-full);
    font-size: .7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
}
.badge-featured { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.badge-category { background: var(--color-accent-bg); color: var(--color-primary); border: 1px solid var(--color-accent-bg2); }
.badge-active   { background: var(--color-success-bg); color: var(--color-success); }
.badge-inactive { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-new      { background: var(--color-info-bg); color: var(--color-info); }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
    padding: 80px 0 64px;
    background:
        radial-gradient(ellipse 90% 70% at 50% -10%, rgba(91,33,182,.07) 0%, transparent 60%),
        linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
    text-align: center;
    position: relative; overflow: hidden;
    border-bottom: 1px solid var(--color-border);
}
.hero::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-l), #c084fc, var(--color-primary));
}

.hero-tag {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--color-accent-bg); border: 1px solid var(--color-accent-bg2);
    padding: 5px 14px; border-radius: var(--radius-full);
    font-size: .78rem; font-weight: 700; color: var(--color-primary);
    text-transform: uppercase; letter-spacing: .06em; margin-bottom: 22px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 900; letter-spacing: -0.04em; line-height: 1.1;
    color: var(--color-text); margin-bottom: 18px;
}
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-l) 60%, #c084fc 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero p {
    font-size: 1.1rem; color: var(--color-text3); max-width: 580px;
    margin: 0 auto 36px; line-height: 1.75; font-weight: 400;
}

/* Hero Search */
.hero-search-wrap {
    max-width: 600px; margin: 0 auto 28px;
    display: flex; gap: 0;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.hero-search-wrap:focus-within {
    border-color: var(--color-primary-l);
    box-shadow: 0 4px 20px rgba(91,33,182,.15), var(--shadow-md);
}
.hero-search {
    flex: 1; background: transparent; border: none; outline: none;
    padding: 14px 22px; font-size: .97rem; color: var(--color-text);
    font-family: var(--font);
}
.hero-search::placeholder { color: var(--color-text4); }
.hero-search-btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-l) 100%);
    color: #fff; padding: 12px 22px; font-size: .875rem; font-weight: 600;
    display: flex; align-items: center; gap: 8px; border: none; cursor: pointer;
    font-family: var(--font); transition: opacity var(--transition);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
    flex-shrink: 0;
}
.hero-search-btn:hover { opacity: .88; }

/* Category Pills */
.category-pills { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.cat-pill {
    padding: 7px 18px; border-radius: var(--radius-full);
    background: var(--color-surface); border: 1.5px solid var(--color-border);
    color: var(--color-text3); font-size: .82rem; font-weight: 600;
    transition: all var(--transition); cursor: pointer; text-decoration: none;
}
.cat-pill:hover { border-color: var(--color-primary-l); color: var(--color-primary); background: var(--color-accent-bg); }
.cat-pill.active {
    background: var(--color-primary); border-color: var(--color-primary);
    color: #fff; box-shadow: 0 2px 8px rgba(91,33,182,.25);
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
    display: flex; gap: 0; justify-content: center; flex-wrap: wrap;
    padding: 32px 0; border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}
.stat-item {
    flex: 1; min-width: 140px; text-align: center;
    padding: 0 24px; border-right: 1px solid var(--color-border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
    font-size: 2rem; font-weight: 900; color: var(--color-primary);
    letter-spacing: -0.04em; line-height: 1;
}
.stat-label {
    font-size: .75rem; color: var(--color-text4);
    text-transform: uppercase; letter-spacing: .08em; margin-top: 4px;
    font-weight: 600;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header { margin-bottom: 40px; }
.section-header h2 {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem); font-weight: 800;
    letter-spacing: -0.035em; color: var(--color-text); margin-bottom: 6px;
}
.section-header p { color: var(--color-text3); font-size: .9rem; }
.section-header-row {
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 16px; flex-wrap: wrap;
}

/* Glow divider */
.glow-divider {
    width: 48px; height: 3px; border-radius: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-l));
    margin: 10px 0 20px;
}

/* Filter bar */
.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.filter-select {
    background: var(--color-surface); border: 1.5px solid var(--color-border);
    color: var(--color-text); padding: 8px 32px 8px 12px; border-radius: var(--radius-md);
    font-size: .84rem; font-family: var(--font); outline: none; cursor: pointer;
    appearance: none; font-weight: 500;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 9px center;
    transition: border-color var(--transition);
    box-shadow: var(--shadow-xs);
}
.filter-select:hover, .filter-select:focus { border-color: var(--color-primary-l); }

/* ============================================================
   DEMO GRID
   ============================================================ */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 22px;
}

/* ============================================================
   DEMO CARD
   ============================================================ */
.demo-card {
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg); overflow: hidden;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
    position: relative;
    display: flex; flex-direction: column;
}
.demo-card:hover {
    border-color: var(--color-primary-l);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-h);
}
.demo-card:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; }

.demo-card-image {
    position: relative; aspect-ratio: 16/9; overflow: hidden;
    background: var(--color-surface2); flex-shrink: 0;
}
.demo-card-image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .4s ease;
}
.demo-card:hover .demo-card-image img { transform: scale(1.04); }
.demo-card-image .badge { position: absolute; top: 10px; }
.demo-card-image .badge-featured { left: 10px; }
.demo-card-image .badge-category { right: 10px; }

/* Hover overlay */
.demo-card-overlay {
    position: absolute; inset: 0;
    background: rgba(91,33,182,.75);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity var(--transition);
}
.demo-card:hover .demo-card-overlay { opacity: 1; }
.btn-view {
    background: #fff; color: var(--color-primary);
    padding: 10px 24px; border-radius: var(--radius-full);
    font-weight: 700; font-size: .875rem;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
}

.demo-card-body { padding: 16px 18px; display: flex; flex-direction: column; flex: 1; }
.demo-card-title {
    font-size: .97rem; font-weight: 700; color: var(--color-text);
    margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.demo-card-desc {
    color: var(--color-text3); font-size: .83rem; line-height: 1.55;
    margin-bottom: 14px; flex: 1;
}
.demo-card-footer {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    border-top: 1px solid var(--color-border); padding-top: 12px; margin-top: auto;
}
.demo-views { color: var(--color-text4); font-size: .78rem; font-weight: 500; }

/* ============================================================
   EMPTY STATES
   ============================================================ */
.empty-state { text-align: center; padding: 80px 24px; }
.empty-icon { font-size: 3.5rem; margin-bottom: 16px; opacity: .6; }
.empty-state h3 { font-size: 1.15rem; font-weight: 700; color: var(--color-text); margin-bottom: 8px; }
.empty-state p { color: var(--color-text3); font-size: .9rem; margin-bottom: 24px; }

/* ============================================================
   DEMO DETAIL PAGE
   ============================================================ */
.demo-hero-image {
    width: 100%; aspect-ratio: 16/9; object-fit: cover;
    border-radius: var(--radius-lg); margin: 20px 0;
    border: 1.5px solid var(--color-border);
    box-shadow: var(--shadow-md);
}
.demo-meta-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.demo-detail-title {
    font-size: clamp(1.5rem, 4vw, 2.2rem); font-weight: 900;
    letter-spacing: -0.04em; color: var(--color-text); margin-bottom: 12px; line-height: 1.15;
}
.demo-description {
    color: var(--color-text2); line-height: 1.8; font-size: .94rem; margin: 14px 0;
}
.demo-description p { margin-bottom: 12px; }
.demo-layout { display: grid; grid-template-columns: 1fr 360px; gap: 40px; align-items: start; }

/* ============================================================
   CREDENTIAL CARDS
   ============================================================ */
.credential-section { margin: 28px 0; }
.credential-card {
    background: var(--color-surface); border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.credential-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px; border-bottom: 1px solid var(--color-border);
    background: var(--color-surface2);
}
.credential-card-title {
    font-size: .9rem; font-weight: 700; color: var(--color-text);
    display: flex; align-items: center; gap: 8px;
}
.credential-card-icon { font-size: 1.1rem; }
.credential-card-body { padding: 18px 20px; }

.credential-url {
    display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap;
}
.credential-url-text {
    flex: 1; font-size: .84rem; color: var(--color-primary);
    word-break: break-all; font-weight: 500;
}
.credential-row {
    display: grid; grid-template-columns: 100px 1fr auto; gap: 10px;
    align-items: center; padding: 10px 0; border-bottom: 1px solid var(--color-border);
}
.credential-row:last-child { border-bottom: none; }
.credential-label {
    font-size: .74rem; font-weight: 700; color: var(--color-text4);
    text-transform: uppercase; letter-spacing: .06em;
}
.credential-value {
    background: var(--color-surface2); border: 1px solid var(--color-border);
    border-radius: var(--radius-sm); padding: 7px 11px;
    font-family: 'Courier New', monospace; font-size: .86rem; color: var(--color-text);
    display: flex; align-items: center; gap: 6px; word-break: break-all;
}
.credential-value .eye-toggle {
    background: none; border: none; cursor: pointer;
    color: var(--color-text4); font-size: .95rem; padding: 2px;
    transition: color var(--transition); flex-shrink: 0;
}
.credential-value .eye-toggle:hover { color: var(--color-primary); }

/* Demo notice */
.demo-notice {
    background: var(--color-info-bg); border: 1px solid #bfdbfe;
    border-radius: var(--radius-md); padding: 12px 16px;
    display: flex; gap: 10px; align-items: flex-start; margin-bottom: 20px;
    font-size: .84rem; color: var(--color-info); line-height: 1.55;
}
.demo-notice-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }

/* ============================================================
   SCREENSHOT GALLERY
   ============================================================ */
.screenshot-gallery {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px;
    margin: 16px 0;
}
.gallery-thumb {
    aspect-ratio: 16/9; overflow: hidden; border-radius: var(--radius-md);
    cursor: pointer; border: 1.5px solid var(--color-border);
    transition: all var(--transition);
}
.gallery-thumb:hover { border-color: var(--color-primary-l); transform: scale(1.02); box-shadow: var(--shadow-md); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* Lightbox */
.lightbox {
    display: none; position: fixed; inset: 0; z-index: 1000;
    background: rgba(17,24,39,.92); backdrop-filter: blur(8px);
    align-items: center; justify-content: center;
}
.lightbox.active { display: flex; }
.lightbox-inner { position: relative; max-width: 90vw; max-height: 90vh; }
.lightbox-img { max-width: 90vw; max-height: 85vh; border-radius: var(--radius-lg); object-fit: contain; box-shadow: var(--shadow-xl); }
.lightbox-close {
    position: absolute; top: -44px; right: 0;
    background: rgba(255,255,255,.15); border: none; color: #fff;
    width: 36px; height: 36px; border-radius: 50%; font-size: 1.1rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,.25); }
.lightbox-prev, .lightbox-next {
    position: absolute; top: 50%; transform: translateY(-50%);
    background: rgba(255,255,255,.15); border: none; color: #fff;
    width: 44px; height: 44px; border-radius: 50%; font-size: 1.2rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background var(--transition);
}
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,.3); }
.lightbox-prev { left: -56px; }
.lightbox-next { right: -56px; }

/* Related demos */
.related-section { padding: 64px 0; border-top: 1px solid var(--color-border); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
    display: flex; gap: 5px; justify-content: center;
    align-items: center; margin-top: 48px; flex-wrap: wrap;
}
.page-btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 10px;
    border-radius: var(--radius-md); font-size: .85rem; font-weight: 600;
    background: var(--color-surface); color: var(--color-text3);
    border: 1.5px solid var(--color-border); transition: all var(--transition);
    text-decoration: none;
}
.page-btn:hover:not(.disabled):not(.page-current) {
    border-color: var(--color-primary-l); color: var(--color-primary);
    background: var(--color-accent-bg);
}
.page-current { background: var(--color-primary); color: #fff; border-color: transparent; }
.page-dots { color: var(--color-text4); padding: 0 4px; }
.page-btn.disabled { opacity: .4; cursor: not-allowed; }

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
#toast-container {
    position: fixed; bottom: 24px; right: 24px; z-index: 9999;
    display: flex; flex-direction: column; gap: 10px;
}
.toast {
    background: var(--color-surface); color: var(--color-text);
    border: 1.5px solid var(--color-border); border-radius: var(--radius-md);
    padding: 12px 18px; font-size: .85rem; font-weight: 500;
    box-shadow: var(--shadow-lg); min-width: 220px;
    display: flex; align-items: center; gap: 10px;
    animation: toastIn .3s ease forwards;
}
.toast.success { border-color: #86efac; }
.toast.success::before { content: '✓'; color: var(--color-success); font-weight: 900; }
.toast.error { border-color: #fca5a5; }
.toast.error::before { content: '✕'; color: var(--color-danger); font-weight: 900; }
@keyframes toastIn { from { opacity:0; transform:translateX(100%); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { to { opacity:0; transform:translateX(100%); } }

/* ============================================================
   FORMS
   ============================================================ */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: .82rem; font-weight: 600; color: var(--color-text2); margin-bottom: 6px; }
.form-label .req { color: var(--color-danger); }
.form-input, .form-select, .form-textarea {
    width: 100%; background: var(--color-surface);
    border: 1.5px solid var(--color-border); color: var(--color-text);
    padding: 9px 13px; border-radius: var(--radius-md);
    font-size: .875rem; font-family: var(--font); outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--color-primary-l);
    box-shadow: 0 0 0 3px rgba(124,58,237,.1);
}
.form-textarea { resize: vertical; min-height: 110px; }
.form-hint { font-size: .75rem; color: var(--color-text4); margin-top: 4px; }
.form-error { font-size: .75rem; color: var(--color-danger); margin-top: 4px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--color-surface); border-top: 1px solid var(--color-border);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px;
}
.footer-logo { margin-bottom: 12px; }
.footer-desc { color: var(--color-text4); font-size: .875rem; line-height: 1.7; max-width: 280px; }
.footer-heading {
    font-size: .72rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .1em; color: var(--color-text4); margin-bottom: 14px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 9px; }
.footer-links a { color: var(--color-text3); font-size: .875rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--color-primary); }
.footer-bottom {
    border-top: 1px solid var(--color-border); padding: 20px 0;
    text-align: center; color: var(--color-text4); font-size: .82rem;
}

/* ============================================================
   ERROR PAGE (404)
   ============================================================ */
.error-page { min-height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; }
.error-code {
    font-size: 7rem; font-weight: 900; letter-spacing: -0.05em; line-height: 1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-l));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.error-msg { font-size: 1.4rem; font-weight: 700; color: var(--color-text); margin: 10px 0; }
.error-desc { color: var(--color-text3); margin-bottom: 32px; font-size: .95rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .demo-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }
    .main-nav {
        display: flex; flex-direction: column; align-items: stretch;
        position: fixed; top: var(--header-h); left: 0; bottom: 0; width: 280px;
        background: var(--color-surface); border-right: 1px solid var(--color-border);
        padding: 20px 12px; gap: 2px;
        transform: translateX(-100%); transition: transform var(--transition);
        z-index: 860; box-shadow: var(--shadow-lg);
    }
    .main-nav.open { transform: translateX(0); }
    .mobile-overlay.open { display: block; }
    .nav-link { padding: 11px 14px; font-size: .9rem; }
    .nav-admin { margin-left: 0; margin-top: 10px; border-radius: var(--radius-md) !important; }

    .demo-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .stats-bar { gap: 0; }
    .stat-item { min-width: 50%; border-right: none; border-bottom: 1px solid var(--color-border); padding: 16px; }
    .stat-item:nth-child(odd) { border-right: 1px solid var(--color-border); }
    .credential-row { grid-template-columns: 90px 1fr auto; }
    .lightbox-prev { left: -40px; }
    .lightbox-next { right: -40px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero { padding: 52px 0 40px; }
    .hero-search-wrap { border-radius: var(--radius-lg); }
    .hero-search-btn { border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 12px 16px; }
    .demo-grid { grid-template-columns: 1fr; }
    .section { padding: 48px 0; }
    .section-sm { padding: 36px 0; }
    .credential-row { grid-template-columns: 1fr; gap: 6px; }
    .credential-row > .btn-copy { justify-self: start; }
    .lightbox-prev { left: 8px; }
    .lightbox-next { right: 8px; }
    .lightbox-img { max-width: 95vw; }
    .stats-bar { flex-direction: column; }
    .stat-item { border-right: none; border-bottom: 1px solid var(--color-border); }
}