/* =============================================================================
 *  Youtab Group — Glassmorphism hub
 *  HOW TO SET YOUR BACKGROUND: drop a bg.jpg into this folder.
 *  UPDATED 2026-07-13: 5-card grid + smaller cards + gold accent + home-icon
 *                       svg sizing (see .home-btn svg).
 * ========================================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    /* Card accent colours. `gold` is new — used by the Youtab Business tile. */
    --aqua:#4cd0ff; --violet:#a76dff; --mint:#5fffa6; --rose:#ff7eb6; --gold:#ffcf5c;
}
html[data-theme="dark"] {
    --bg-overlay: linear-gradient(135deg, rgba(11,16,35,0.55) 0%, rgba(45,10,61,0.55) 60%, rgba(20,5,35,0.65) 100%);
    --bg-fallback: linear-gradient(135deg, #1a3a5c 0%, #2d1a4a 50%, #4a1a3d 100%);
    --vignette: radial-gradient(ellipse at top, transparent 0%, rgba(0,0,0,0.4) 100%);
    --text: #fff;
    --text-muted: rgba(255,255,255,0.78);
    --glass-bg: rgba(255,255,255,0.07);
    --glass-bg-strong: rgba(255,255,255,0.12);
    --glass-border: rgba(255,255,255,0.22);
    --glass-border-strong: rgba(255,255,255,0.4);
    --glass-shadow: 0 12px 40px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.18);
    --card-shadow: 0 8px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.18);
    --text-shadow: 0 2px 12px rgba(0,0,0,0.5);
    --glow-purple: rgba(167,109,255,0.3);
    --glow-blue: rgba(76,208,255,0.3);
    --dropdown-bg: rgba(15,15,30,0.92);
}
html[data-theme="light"] {
    --bg-overlay: linear-gradient(135deg, rgba(255,255,255,0.45) 0%, rgba(230,240,255,0.45) 60%, rgba(255,235,245,0.5) 100%);
    --bg-fallback: linear-gradient(135deg, #b3d9ff 0%, #e0d4ff 50%, #ffd4e8 100%);
    --vignette: radial-gradient(ellipse at top, transparent 0%, rgba(0,0,0,0.08) 100%);
    --text: #1a1a2a;
    --text-muted: rgba(26,26,42,0.72);
    --glass-bg: rgba(255,255,255,0.45);
    --glass-bg-strong: rgba(255,255,255,0.6);
    --glass-border: rgba(255,255,255,0.7);
    --glass-border-strong: rgba(255,255,255,0.95);
    --glass-shadow: 0 12px 40px rgba(50,30,100,0.18), inset 0 1px 0 rgba(255,255,255,0.6);
    --card-shadow: 0 8px 28px rgba(50,30,100,0.15), inset 0 1px 0 rgba(255,255,255,0.5);
    --text-shadow: none;
    --glow-purple: rgba(167,109,255,0.3);
    --glow-blue: rgba(76,208,255,0.35);
    --dropdown-bg: rgba(255,255,255,0.92);
}
html, body {
    font-family: 'Inter', 'Raleway', system-ui, sans-serif;
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    background:
        var(--bg-overlay),
        url('bg.jpg') center/cover fixed no-repeat,
        var(--bg-fallback);
    background-attachment: fixed;
    transition: color 0.3s ease;
}
body::before {
    content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background: var(--vignette);
}
.bg-glow {
    position: fixed; width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, var(--glow-purple) 0%, transparent 70%);
    filter: blur(80px); top: 20%; right: -150px;
    animation: bg-float 18s ease-in-out infinite;
    z-index: 0; pointer-events: none;
}
.bg-glow.two {
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    top: auto; right: auto; bottom: -100px; left: -100px;
    animation-duration: 22s;
}
@keyframes bg-float {
    0%,100% { transform: translate(0,0) scale(1); }
    50% { transform: translate(120px, 80px) scale(1.15); }
}
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: background 0.3s, border-color 0.3s;
}
/* HEADER */
#site-header {
    position: relative; z-index: 10;
    width: calc(100% - 48px); max-width: 1280px;
    margin: 18px auto 0;
    padding: 12px 24px;
    border-radius: 18px;
    display: flex; justify-content: space-between; align-items: center;
}
/* Home button — now an inline SVG (was an <img>).  Size + colour handled here
   so the SVG picks up `currentColor` from the header text colour, which means
   dark-mode / light-mode / RTL all work without a second asset. */
.home-btn { display: inline-flex; align-items: center; justify-content: center; color: var(--text); text-decoration: none; }
.home-btn svg {
    width: 26px; height: 26px;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
    transition: transform 0.25s cubic-bezier(0.2,0.8,0.25,1);
}
.home-btn:hover svg { transform: scale(1.08); }
.header-center-logo {
    position: absolute; left: 50%; transform: translateX(-50%);
}
.header-center-logo img { height: 50px; display: block; filter: drop-shadow(0 2px 12px rgba(0,0,0,0.3)); }
.header-right { display: flex; align-items: center; gap: 10px; }
/* Theme toggle */
.theme-toggle {
    -webkit-appearance: none; appearance: none;
    width: 38px; min-width: 38px; height: 38px;
    border-radius: 50%;
    background: var(--glass-bg-strong);
    border: 1px solid var(--glass-border);
    color: var(--text);
    cursor: pointer; padding: 0;
    display: grid; place-items: center;
    transition: transform 0.3s cubic-bezier(0.2,0.8,0.25,1), background 0.3s, border-color 0.3s;
    flex: 0 0 38px; box-sizing: border-box;
}
.theme-toggle:hover { transform: rotate(20deg) scale(1.05); border-color: var(--glass-border-strong); }
.theme-toggle svg { width: 18px; height: 18px; }
html[data-theme="dark"]  .theme-toggle .icon-moon { display: none; }
html[data-theme="dark"]  .theme-toggle .icon-sun  { display: block; }
html[data-theme="light"] .theme-toggle .icon-moon { display: block; }
html[data-theme="light"] .theme-toggle .icon-sun  { display: none; }
/* LANGUAGE SWITCHER */
.language-selector { position: relative; flex-shrink: 0; }
.lang-btn {
    -webkit-appearance: none; appearance: none;
    background: var(--glass-bg-strong);
    color: var(--text);
    border: 1px solid var(--glass-border);
    padding: 7px 12px;
    border-radius: 10px;
    cursor: pointer;
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 13px; font-weight: 600;
    font-family: inherit;
    line-height: 1; white-space: nowrap; box-sizing: border-box;
    transition: background 0.3s, border-color 0.3s, transform 0.2s;
    height: 38px; min-width: 70px; width: auto;
}
.lang-btn .lang-flag { width: 18px; height: 13px; flex: 0 0 18px; }
.lang-btn .lang-label { display: inline-block; min-width: 16px; }
.lang-btn:hover { border-color: var(--glass-border-strong); transform: scale(1.03); }
.lang-flag { display: block; border-radius: 2px; }
.lang-dropdown {
    display: none;
    position: absolute; top: calc(100% + 6px);
    right: 0; min-width: 110px;
    background: var(--dropdown-bg);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border); border-radius: 12px;
    padding: 6px; z-index: 100;
    box-shadow: 0 14px 40px rgba(0,0,0,0.35);
}
html[dir="rtl"] .lang-dropdown { right: auto; left: 0; }
.lang-dropdown.open { display: block; animation: dropFade 0.18s ease-out; }
@keyframes dropFade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.lang-option {
    display: flex; align-items: center; gap: 9px;
    padding: 9px 14px; cursor: pointer;
    color: var(--text); border-radius: 8px;
    font-size: 13px; font-weight: 500;
    transition: background 0.15s;
}
.lang-option:hover  { background: rgba(127,127,127,0.15); }
.lang-option.active { background: rgba(127,127,127,0.20); font-weight: 700; }
/* Persian font + RTL */
html[lang="fa"] body,
html[lang="fa"] .hero-title,
html[lang="fa"] .card h2,
html[lang="fa"] .hero-tag,
html[lang="fa"] .hero-subtitle,
html[lang="fa"] .card p,
html[lang="fa"] .copy { font-family: 'Vazirmatn', 'Inter', system-ui, sans-serif; }
html[dir="rtl"] .arrow { transform: scaleX(-1); }
html[dir="rtl"] .card-cta { flex-direction: row-reverse; }
/* HERO */
.hero {
    position: relative; z-index: 5;
    text-align: center;
    padding: 80px 20px 30px;
    max-width: 880px;
    margin: 0 auto;
}
.hero-tag {
    display: inline-block;
    font-size: 11px; font-weight: 600; letter-spacing: 4px;
    color: var(--text);
    padding: 8px 18px;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    margin-bottom: 22px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 18px;
    text-shadow: var(--text-shadow);
}
.hero-subtitle {
    font-size: clamp(15px, 1.5vw, 19px);
    color: var(--text-muted);
    font-weight: 300;
    max-width: 520px;
    margin: 0 auto;
}
/* =========================  CARDS  =========================
 * UPDATED: 4 → 5 tiles on desktop, all in one row.
 *   ≥ 1200px : 5 columns (Youtab.nl · .io · Business · Social · Dental)
 *   ≥ 900px  : 3 columns
 *   ≥ 640px  : 2 columns
 *   < 640px  : 1 column (mobile)
 * Tile chrome is a touch smaller than the previous 4-card layout so five
 * fit comfortably on a 1280-px canvas without cramping the text.
 * ========================================================== */
.container {
    position: relative; z-index: 5;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
    max-width: 1280px;
    margin: 50px auto 60px;
    padding: 0 24px;
}
.card {
    position: relative;
    text-decoration: none;
    color: var(--text);
    border-radius: 18px;
    padding: 24px 20px 20px;
    min-height: 220px;
    display: flex; flex-direction: column;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.2,0.8,0.25,1), background 0.3s, border-color 0.3s, box-shadow 0.3s;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(170%);
    -webkit-backdrop-filter: blur(24px) saturate(170%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--card-shadow);
}
.card[data-color="aqua"]   { --c: var(--aqua);   }
.card[data-color="violet"] { --c: var(--violet); }
.card[data-color="mint"]   { --c: var(--mint);   }
.card[data-color="rose"]   { --c: var(--rose);   }
.card[data-color="gold"]   { --c: var(--gold);   }
.card::before {
    content: ''; position: absolute; inset: 0; border-radius: 18px;
    background: linear-gradient(135deg, var(--c, transparent), transparent 50%);
    opacity: 0.15; pointer-events: none; transition: opacity 0.4s;
}
.card:hover {
    transform: translateY(-6px);
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    box-shadow: 0 20px 44px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.28), 0 0 50px var(--c);
}
.card:hover::before { opacity: 0.4; }
.card-icon {
    margin-bottom: 14px;
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: var(--glass-bg-strong);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    color: var(--c, var(--text));
}
.card-icon svg { width: 22px; height: 22px; }
.card h2 {
    font-family: 'Playfair Display', serif;
    font-size: 20px; font-weight: 700;
    margin-bottom: 6px;
    text-shadow: var(--text-shadow);
    color: var(--text);
    line-height: 1.2;
}
.card p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 18px;
    flex: 1;
    line-height: 1.5;
}
.card-cta {
    display: inline-flex; align-items: center;
    gap: 8px;
    font-size: 13px; font-weight: 600;
    color: var(--c, var(--text));
}
.arrow { transition: transform 0.3s cubic-bezier(0.2,0.8,0.25,1); }
.card:hover .arrow { transform: translateX(6px); }
/* Grid step-down: at each breakpoint we drop a column so tiles stay legible.
   The mobile tile deliberately bumps padding/font back up a touch. */
@media (max-width: 1200px) {
    .container { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 900px; }
}
@media (max-width: 900px) {
    .container { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 640px; }
}
@media (max-width: 640px) {
    .container { grid-template-columns: 1fr; max-width: 420px; }
    .card { min-height: 200px; padding: 24px 22px 22px; }
    .card h2 { font-size: 22px; }
    .card p  { font-size: 14px; }
}
/* FOOTER */
#site-footer {
    position: relative; z-index: 5;
    width: calc(100% - 48px); max-width: 1280px;
    margin: 20px auto 24px;
    padding: 22px 24px;
    border-radius: 18px;
    text-align: center;
    color: var(--text);
}
.footer-logo {
    width: 110px;
    margin-bottom: 10px;
    opacity: 0.9;
    filter: drop-shadow(0 4px 16px rgba(0,0,0,0.3));
}
.copy {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.3px;
}
@media (max-width: 600px) {
    .hero { padding: 60px 16px 16px; }
    #site-header { width: calc(100% - 24px); padding: 10px 16px; }
    #site-footer { width: calc(100% - 24px); }
    .header-center-logo img { height: 40px; }
}
@media (prefers-reduced-motion: reduce) {
    .bg-glow { animation: none; }
    .card, .arrow { transition: none; }
}