:root {
    color-scheme: light;
    --bg: #f4ecdd;
    --bg-2: #ebdfcb;
    --surface: rgba(255, 252, 246, 0.88);
    --card: #fcf7ee;
    --card-hover: #ffffff;
    --accent: #b26a2b;
    --accent2: #5e4670;
    --accent3: #2e8b4f;
    --success: #2e8b4f;
    --danger: #c0392b;
    --warning: #b9772a;
    --text: #2c2230;
    --muted: #6e6274;
    --border: rgba(120, 84, 45, 0.20);
    --border-strong: rgba(120, 84, 45, 0.42);
    --glow: 0 6px 20px rgba(150, 100, 50, 0.20);
    --glow-strong: 0 12px 30px rgba(150, 100, 50, 0.28);
    --font-ar: 'Tajawal', sans-serif;
    --font-en: 'Space Mono', monospace;
    --font-display: 'Syne', sans-serif;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow-soft: 0 10px 30px rgba(95, 70, 45, 0.10);
    --shadow-deep: 0 20px 50px rgba(95, 70, 45, 0.16);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 220px; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-ar);
    overflow-x: hidden;
    min-height: 100vh;
    line-height: 1.6;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
}

input, textarea, [contenteditable="true"] {
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    user-select: text !important;
}

img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: auto;
}

.bg-grid {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -2;
    background-image:
        linear-gradient(to right, rgba(60,42,72,0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(60,42,72,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
}

.bg-glow {
    position: fixed; z-index: -1; pointer-events: none;
    width: 500px; height: 500px; border-radius: 50%;
    filter: blur(90px); opacity: 0.10;
}
.bg-glow.one { top: -100px; right: -100px; background: var(--accent); }
.bg-glow.two { bottom: -150px; left: -150px; background: var(--accent2); }
.bg-glow.three { top: 40%; left: 50%; transform: translate(-50%, -50%); background: var(--accent3); opacity: 0.05; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ============ الهيدر ============ */
header {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(250, 245, 236, 0.82);
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
}
header.scrolled {
    padding: 6px 0;
    box-shadow: 0 8px 30px rgba(95,70,45,0.12);
}

nav { display: flex; flex-direction: column; align-items: center; gap: 12px; }

.logo-container {
    display: flex; justify-content: center; align-items: center;
    text-decoration: none;
    transition: transform 0.3s ease;
}
.logo-container:hover { transform: scale(1.03); }

.logo-img {
    width: 160px; height: 160px; object-fit: contain;
    transition: width 0.3s ease, height 0.3s ease;
    filter: none;
}
header.scrolled .logo-img {
    width: 95px; height: 95px;
}

.nav-links {
    display: flex; gap: 1.4rem; list-style: none; margin: 0; padding: 0;
    justify-content: center; width: 100%;
    align-items: center;
}
.nav-links li {
    display: flex; align-items: center;
}
.nav-links a {
    color: var(--text); text-decoration: none; font-weight: 600;
    font-size: 1.05rem;
    padding: 6px 14px; border-radius: 999px;
    position: relative;
    transition: color 0.25s, background 0.25s;
    white-space: nowrap;
    line-height: 1;
}
.nav-links a:hover { color: var(--accent); background: rgba(217, 154, 102, 0.08); }
.nav-links a.active { color: var(--accent); background: rgba(217, 154, 102, 0.12); }

#guest-auth-buttons {
    display: flex; gap: 8px; align-items: center;
}
.nav-auth-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 999px;
    font-family: inherit; font-weight: 700;
    font-size: 0.92rem; cursor: pointer;
    transition: 0.25s; border: 1px solid;
    white-space: nowrap; line-height: 1;
}
.nav-auth-btn.login {
    background: transparent; color: var(--text);
    border-color: var(--border);
}
.nav-auth-btn.login:hover {
    border-color: var(--accent); color: var(--accent);
    background: rgba(217, 154, 102, 0.05);
}
.nav-auth-btn.register {
    background: linear-gradient(135deg, var(--accent), #b87333);
    color: var(--bg); border-color: var(--accent);
}
.nav-auth-btn.register:hover {
    box-shadow: 0 0 20px rgba(217, 154, 102, 0.45);
    transform: translateY(-2px);
}

/* ============ قسم البداية (Hero) ============ */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding-top: 240px; padding-bottom: 80px;
    position: relative;
}
.hero-layout {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem;
    align-items: center; width: 100%;
}

.text-gradient {
    background: linear-gradient(120deg, var(--accent) 0%, var(--accent2) 50%, var(--accent3) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 8s ease-in-out infinite;
}
@keyframes gradientShift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(217, 154, 102, 0.08);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 6px 16px; border-radius: 999px;
    font-family: var(--font-en);
    font-size: 0.85rem; font-weight: 700;
    margin-bottom: 1.5rem;
}
.hero-badge .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--success); box-shadow: 0 0 10px var(--success);
    animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
    font-size: clamp(2.2rem, 4.5vw, 4rem);
    font-weight: 800; line-height: 1.15; margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}
.hero p {
    font-size: 1.1rem; color: var(--muted);
    margin-bottom: 2.5rem; line-height: 1.9;
    max-width: 580px;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
    background: transparent; color: var(--accent);
    border: 1px solid var(--accent);
    padding: 0.85rem 2rem; border-radius: 10px;
    font-weight: 700; text-decoration: none;
    font-family: inherit; font-size: 1rem;
    transition: all 0.3s ease; cursor: pointer;
    display: inline-flex; align-items: center; gap: 10px;
    position: relative; overflow: hidden;
}
.btn-primary::before {
    content: ''; position: absolute; inset: 0;
    background: var(--accent); transform: translateX(100%);
    transition: transform 0.4s ease; z-index: -1;
}
.btn-primary:hover::before { transform: translateX(0); }
.btn-primary:hover { color: var(--bg); box-shadow: var(--glow); transform: translateY(-2px); }

.btn-secondary {
    background: transparent; color: var(--text);
    border: 1px solid var(--border);
    padding: 0.85rem 2rem; border-radius: 10px;
    font-weight: 600; text-decoration: none;
    font-family: inherit; font-size: 1rem;
    transition: all 0.3s ease; cursor: pointer;
    display: inline-flex; align-items: center; gap: 10px;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* ============ لعبة الذاكرة ============ */
.game-container {
    background: linear-gradient(145deg, var(--card), rgba(214, 196, 170, 0.5));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem; text-align: center;
    box-shadow: var(--shadow-deep);
    position: relative; overflow: hidden;
    width: 100%; max-width: 360px; margin: 0 auto;
}
.game-container::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: sweep 3s ease-in-out infinite;
}
@keyframes sweep {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.game-title {
    color: var(--accent); font-family: var(--font-en);
    margin-bottom: 12px; font-size: 1.15rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center; gap: 8px;
}
.game-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 14px; font-size: 0.9rem;
    background: rgba(120,84,45,0.07); padding: 8px 12px; border-radius: 8px;
}
.game-stats {
    display: flex; justify-content: center; gap: 1.2rem;
    margin-bottom: 12px; font-size: 0.85rem;
}
.game-stats span strong { color: var(--accent); font-family: var(--font-en); }

.memory-board {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
    perspective: 1000px; margin-bottom: 15px;
}
.memory-card {
    width: 100%; aspect-ratio: 1; position: relative;
    transform-style: preserve-3d; transition: transform 0.5s; cursor: pointer;
}
.memory-card.flip { transform: rotateY(180deg); }
.memory-face {
    width: 100%; height: 100%; position: absolute;
    backface-visibility: hidden; -webkit-backface-visibility: hidden;
    display: flex; justify-content: center; align-items: center;
    border-radius: 8px; font-size: 1.5rem;
    border: 1px solid var(--border);
}
.memory-front {
    background: rgba(217, 154, 102, 0.1);
    color: var(--accent);
    transform: rotateY(180deg);
}
.memory-back {
    background: rgba(94,70,112,0.06);
    color: var(--accent2);
    background-image: linear-gradient(135deg, rgba(156, 123, 181, 0.1), rgba(217, 154, 102, 0.05));
}
.memory-card.matched .memory-front {
    background: rgba(46, 139, 79, 0.18);
    color: var(--success);
    border-color: var(--success);
    animation: matched 0.5s ease;
}
@keyframes matched {
    0% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.1); }
    100% { transform: rotateY(180deg) scale(1); }
}

.game-btn {
    background: rgba(217, 154, 102, 0.08);
    color: var(--accent); border: 1px solid var(--accent);
    padding: 0.65rem 1rem; border-radius: 8px;
    cursor: pointer; transition: 0.3s; font-weight: 700;
    width: 100%; font-family: inherit; font-size: 1rem;
}
.game-btn:hover { background: var(--accent); color: var(--bg); box-shadow: var(--glow); }

/* ============ قسم الذكاء الاصطناعي ============ */
.ai-section {
    background:
        radial-gradient(ellipse at top, rgba(156, 123, 181, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at bottom, rgba(217, 154, 102, 0.05) 0%, transparent 60%);
    padding: 100px 0;
    border-top: 1px solid rgba(156, 123, 181, 0.12);
    border-bottom: 1px solid rgba(156, 123, 181, 0.12);
}
.ai-terminal {
    background: var(--card);
    border: 1px solid var(--accent2);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-deep);
    max-width: 820px; margin: 0 auto;
}
.ai-terminal-header {
    background: rgba(156, 123, 181, 0.08);
    padding: 12px 18px;
    border-bottom: 1px solid rgba(156, 123, 181, 0.25);
    display: flex; justify-content: space-between; align-items: center;
    font-family: var(--font-en); font-size: 0.88rem;
}
.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span {
    width: 12px; height: 12px; border-radius: 50%;
    display: inline-block;
}
.terminal-dots .r { background: #ff5f56; }
.terminal-dots .y { background: #ffbd2e; }
.terminal-dots .g { background: #27c93f; }

.ai-terminal-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.ai-textarea {
    width: 100%; background: #fffdf8;
    border: 1px solid var(--border); border-radius: 8px;
    padding: 15px; color: #355b7d;
    font-family: var(--font-en); font-size: 0.95rem;
    resize: vertical; min-height: 140px; outline: none;
    transition: 0.3s; direction: ltr; text-align: left;
    line-height: 1.6;
}
.ai-textarea:focus {
    border-color: var(--accent2);
    box-shadow: inset 0 0 15px rgba(156, 123, 181, 0.15);
}
.ai-btn {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--accent2), #6e4fa0);
    color: white; border: none;
    padding: 10px 22px; border-radius: 8px;
    font-weight: 700; cursor: pointer;
    transition: 0.3s; font-family: inherit;
    display: flex; align-items: center; gap: 8px;
}
.ai-btn:hover { box-shadow: 0 8px 24px rgba(156, 123, 181, 0.4); transform: translateY(-2px); }
.ai-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }

.ai-result {
    background: rgba(217, 154, 102, 0.04);
    border-right: 4px solid var(--accent);
    padding: 18px; border-radius: 0 8px 8px 0;
    color: var(--text); display: none;
    line-height: 1.8; font-size: 0.95rem;
    white-space: pre-wrap; word-break: break-word;
}
.loading-pulse { animation: pulse 1.5s infinite; color: var(--accent); font-weight: 700; }

/* ============ الأقسام العامة ============ */
.section { padding: 90px 0; }
.section-title {
    text-align: center; font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 0.75rem; color: var(--text);
    font-weight: 800;
}
.section-sub {
    text-align: center; color: var(--muted);
    margin-bottom: 3rem; font-size: 1.05rem;
    max-width: 600px; margin-inline: auto;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
}

.card {
    background: linear-gradient(145deg, var(--card), rgba(214, 196, 170, 0.6));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s, box-shadow 0.3s;
    display: flex; flex-direction: column;
    position: relative;
}
.card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(217, 154, 102, 0.05), transparent);
    opacity: 0; transition: opacity 0.3s; pointer-events: none;
}
.card:hover { transform: translateY(-8px); border-color: var(--accent); box-shadow: 0 20px 40px rgba(217, 154, 102, 0.1); }
.card:hover::after { opacity: 1; }

.card-img {
    width: 100%; height: 200px; object-fit: cover;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, #ece0cf, #e0d0bc);
}
.card.no-image {
    background:
        linear-gradient(145deg, var(--card), rgba(214, 196, 170, 0.6)),
        radial-gradient(circle at top right, rgba(217, 154, 102, 0.08), transparent 60%);
    background-blend-mode: overlay;
    position: relative;
}
.card.no-image::before {
    content: '';
    position: absolute;
    top: 0; right: 0; left: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent);
    opacity: 0.6;
}
.card.no-image .card-content {
    padding: 2rem 1.5rem 1.5rem;
}
.card-content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.card-title { font-size: 1.25rem; margin-bottom: 0.6rem; color: var(--text); font-weight: 700; }
.card-desc { color: var(--muted); font-size: 0.92rem; margin-bottom: 1.2rem; line-height: 1.7; flex: 1; }
.card-link {
    color: var(--accent); text-decoration: none; font-weight: 700;
    display: inline-flex; align-items: center; gap: 6px;
    transition: gap 0.2s;
}
.card-link:hover { gap: 12px; }

.empty-state {
    grid-column: 1 / -1;
    text-align: center; padding: 4rem 2rem;
    color: var(--muted);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    font-size: 1.05rem;
}
.empty-state i { font-size: 2.5rem; color: var(--accent); margin-bottom: 1rem; display: block; opacity: 0.5; }

.post-card { border-color: rgba(70, 184, 119, 0.18); }
.post-card:hover { border-color: var(--accent3); box-shadow: 0 20px 40px rgba(70, 184, 119, 0.1); }
.post-date {
    color: var(--accent3); font-size: 0.82rem;
    font-family: var(--font-en); font-weight: 700;
    margin-bottom: 0.4rem;
    display: inline-flex; align-items: center; gap: 6px;
}

/* ============ الفوتر ============ */
footer {
    background: linear-gradient(180deg, var(--card), var(--bg));
    border-top: 1px solid var(--border);
    padding: 3.5rem 0 2rem;
    text-align: center;
    margin-top: 4rem;
}
.footer-logo {
    width: 70px; height: 70px; margin-bottom: 1rem;
    filter: none;
}
.footer-text {
    color: var(--muted); margin-bottom: 2rem;
    max-width: 500px; margin-inline: auto; line-height: 1.8;
}
.footer-socials {
    display: flex; justify-content: center; gap: 1.2rem;
    margin-bottom: 2rem; flex-wrap: wrap;
}
.social-btn {
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--bg); border: 1px solid var(--border);
    display: flex; justify-content: center; align-items: center;
    font-size: 1.2rem; color: var(--muted);
    text-decoration: none; transition: 0.3s;
}
.social-btn:hover {
    color: var(--accent); border-color: var(--accent);
    box-shadow: var(--glow); transform: translateY(-4px);
}

.footer-links {
    display: flex; flex-direction: row; justify-content: center; align-items: center;
    gap: 0.55rem 0.7rem; flex-wrap: wrap;
    margin: 0 auto 1.8rem; max-width: 720px;
}
.footer-links a {
    color: var(--muted); text-decoration: none; font-size: 0.86rem;
    padding: 0.4rem 1rem; border: 1px solid var(--border); border-radius: 999px;
    white-space: nowrap; transition: 0.25s ease;
}
.footer-links a:hover { color: var(--accent); border-color: var(--accent); background: rgba(217,154,102,0.06); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem; margin-top: 1rem;
    color: var(--muted); font-size: 0.85rem;
    display: flex; justify-content: center; gap: 1rem;
    flex-wrap: wrap; align-items: center;
}
.footer-bottom i.fa-heart { color: var(--accent3); animation: heartbeat 1.5s ease-in-out infinite; }
@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* ============ المراسلة الآلية (شات) ============ */
.chat-widget { position: fixed; bottom: 20px; left: 20px; z-index: 999; }
.chat-toggle {
    width: 60px; height: 60px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: white; border: none; font-size: 1.6rem;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(217, 154, 102, 0.4);
    display: flex; justify-content: center; align-items: center;
    transition: 0.3s; position: relative;
}
.chat-toggle::before {
    content: ''; position: absolute; inset: -4px;
    border-radius: 50%; border: 2px solid var(--accent);
    opacity: 0; animation: ringPulse 2s ease-out infinite;
}
@keyframes ringPulse {
    0% { opacity: 0.6; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.4); }
}
.chat-toggle:hover { transform: scale(1.1) rotate(-5deg); }

.chat-window {
    position: absolute; bottom: 80px; left: 0;
    width: 360px; height: 500px;
    background: var(--card);
    border: 1px solid var(--accent);
    border-radius: var(--radius-lg);
    display: flex; flex-direction: column; overflow: hidden;
    opacity: 0; pointer-events: none; transform: translateY(20px) scale(0.95);
    transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 20px 50px rgba(95,70,45,0.18);
}
.chat-window.open { opacity: 1; pointer-events: all; transform: translateY(0) scale(1); }

.chat-header {
    background: linear-gradient(to right, rgba(217, 154, 102, 0.12), transparent);
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between;
    align-items: center; font-weight: 700;
}
.chat-header-info { display: flex; align-items: center; gap: 10px; }
.chat-header-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(217, 154, 102, 0.12);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent); font-size: 1.1rem;
}
.chat-header-title { font-size: 0.95rem; }
.chat-header-status { font-size: 0.75rem; color: var(--success); font-weight: 500; display: flex; align-items: center; gap: 4px; }
.chat-header-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--success); }
.chat-close-btn {
    background: none; border: none; color: var(--muted);
    cursor: pointer; font-size: 1.1rem; padding: 4px 8px;
    border-radius: 6px; transition: 0.2s;
}
.chat-close-btn:hover { color: var(--text); background: rgba(0,0,0,0.05); }

.chat-body {
    flex: 1; padding: 1rem; overflow-y: auto;
    display: flex; flex-direction: column; gap: 10px;
    scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.chat-body::-webkit-scrollbar { width: 6px; }
.chat-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.msg {
    padding: 0.75rem 1rem; border-radius: 14px;
    font-size: 0.92rem; max-width: 85%; line-height: 1.6;
    animation: msgIn 0.3s ease;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.msg.bot {
    background: rgba(217, 154, 102, 0.08);
    color: var(--text); align-self: flex-start;
    border-bottom-right-radius: 4px;
    border: 1px solid rgba(217, 154, 102, 0.15);
}
.msg.user {
    background: linear-gradient(135deg, var(--accent2), #7a5cb0);
    color: white; align-self: flex-end;
    border-bottom-left-radius: 4px;
}
.msg.loading {
    align-self: flex-start; background: transparent;
    color: var(--muted); border: none;
    font-style: italic; padding: 4px 8px;
}
.chat-suggestions {
    display: flex; flex-wrap: wrap; gap: 6px;
    padding: 0 1rem 0.5rem;
}
.chat-suggestion {
    background: rgba(217, 154, 102, 0.06);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 5px 10px; border-radius: 999px;
    font-size: 0.78rem; cursor: pointer;
    transition: 0.2s; font-family: inherit;
}
.chat-suggestion:hover { background: rgba(217, 154, 102, 0.15); }

.chat-input {
    display: flex; padding: 0.8rem 1rem;
    border-top: 1px solid var(--border);
    background: var(--bg);
    gap: 6px; align-items: center;
}
.chat-input input {
    flex: 1; background: transparent; border: none;
    color: var(--text); outline: none; padding: 0.5rem;
    font-family: inherit; font-size: 0.95rem;
}
.chat-input button {
    background: none; border: none; color: var(--accent);
    cursor: pointer; font-size: 1.1rem; transition: 0.3s;
    width: 36px; height: 36px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
}
.chat-input button:hover { background: rgba(217, 154, 102, 0.1); }
.chat-input button:disabled { color: var(--muted); cursor: not-allowed; }

/* ============ Toast ============ */
.toast-box {
    position: fixed; top: 20px; left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--card);
    border: 1px solid var(--accent3);
    border-radius: 10px;
    padding: 1rem 1.8rem; color: var(--text);
    font-weight: 600; z-index: 9999;
    box-shadow: 0 0 30px rgba(70, 184, 119, 0.3);
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex; align-items: center; gap: 10px;
}
.toast-box.show { transform: translateX(-50%) translateY(0); }

/* ============ زر العودة للأعلى ============ */
.back-to-top {
    position: fixed; bottom: 20px; right: 20px;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--card); border: 1px solid var(--border);
    color: var(--accent); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transform: translateY(20px);
    transition: 0.3s; z-index: 998;
    font-size: 1.1rem;
}
.back-to-top.show { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); color: var(--bg); box-shadow: var(--glow); }

/* ============ Reveal Animation ============ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
    .hero { padding-top: 250px; }
    .hero-layout { grid-template-columns: 1fr; text-align: center; gap: 2.5rem; }
    .hero p { margin-inline: auto; }
    .hero-actions { justify-content: center; }
    .logo-img { width: 120px; height: 120px; }
    header.scrolled .logo-img { width: 75px; height: 75px; }
    .nav-links { gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
    .nav-links a { font-size: 0.9rem; padding: 5px 10px; }
    .nav-auth-btn { font-size: 0.82rem; padding: 5px 12px; }
    .chat-window { width: calc(100vw - 40px); height: 70vh; }
    .container { padding: 0 1.2rem; }
    .section { padding: 60px 0; }
    .ai-section { padding: 70px 0; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .game-container { max-width: 100%; }
    .back-to-top { bottom: 85px; }
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ============ نظام التسجيل والدخول ============ */
.auth-overlay {
    position: fixed; inset: 0;
    background:
        radial-gradient(ellipse at top, rgba(217, 154, 102, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(156, 123, 181, 0.08) 0%, transparent 50%),
        rgba(40, 30, 46, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9998;
    display: none;
    align-items: center; justify-content: center;
    padding: 1rem;
}
.auth-overlay.active { display: flex; }

.auth-box {
    background: var(--card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    width: 100%; max-width: 420px;
    box-shadow: 0 0 40px rgba(217, 154, 102, 0.1), var(--shadow-deep);
    animation: authIn 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
}
.auth-close {
    position: absolute;
    top: 14px; left: 14px;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.04);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.95rem;
    transition: 0.2s;
}
.auth-close:hover {
    background: rgba(192, 57, 43, 0.1);
    color: var(--danger);
    border-color: var(--danger);
    transform: rotate(90deg);
}
@keyframes authIn {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-logo {
    display: block; margin: 0 auto 1rem;
    width: 70px; height: 70px; object-fit: contain;
    filter: none;
}
.auth-title {
    text-align: center; font-size: 1.4rem;
    font-weight: 800; margin-bottom: 0.4rem;
    color: var(--text);
}
.auth-subtitle {
    text-align: center; color: var(--muted);
    font-size: 0.92rem; margin-bottom: 1.8rem;
}
.auth-form-group { margin-bottom: 1rem; }
.auth-form-group label {
    display: block; margin-bottom: 0.4rem;
    color: var(--muted); font-size: 0.85rem;
    font-weight: 500;
}
.auth-input {
    width: 100%; background: var(--bg);
    border: 1px solid var(--border); color: var(--text);
    padding: 0.85rem 1rem; border-radius: 10px;
    font-family: var(--font-ar); font-size: 0.95rem;
    transition: 0.2s;
}
.auth-input:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(217, 154, 102, 0.12);
}
.auth-btn {
    width: 100%; padding: 0.9rem;
    background: linear-gradient(135deg, var(--accent), #b87333);
    color: var(--bg); border: none;
    border-radius: 10px; font-family: inherit;
    font-weight: 700; font-size: 1rem;
    cursor: pointer; transition: 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    margin-top: 0.5rem;
}
.auth-btn:hover { box-shadow: 0 8px 20px rgba(217, 154, 102, 0.4); transform: translateY(-2px); }
.auth-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.auth-switch {
    text-align: center; margin-top: 1.5rem;
    color: var(--muted); font-size: 0.9rem;
}
.auth-switch a {
    color: var(--accent); text-decoration: none;
    font-weight: 600; cursor: pointer;
}
.auth-switch a:hover { text-decoration: underline; }

.auth-error {
    background: rgba(192, 57, 43, 0.08);
    border: 1px solid rgba(192, 57, 43, 0.25);
    color: var(--danger);
    padding: 0.7rem 1rem; border-radius: 8px;
    font-size: 0.85rem; margin-top: 1rem;
    display: none; align-items: center; gap: 8px;
}
.auth-error.show { display: flex; }

.auth-divider {
    text-align: center; margin: 1.2rem 0;
    color: var(--muted); font-size: 0.82rem;
    position: relative;
}
.auth-divider::before, .auth-divider::after {
    content: ''; position: absolute;
    top: 50%; width: 35%; height: 1px;
    background: var(--border);
}
.auth-divider::before { right: 0; }
.auth-divider::after { left: 0; }

.auth-skip {
    background: transparent; border: 1px solid var(--border);
    color: var(--muted); padding: 0.6rem;
    border-radius: 10px; font-family: inherit;
    width: 100%; font-size: 0.85rem; cursor: pointer;
    transition: 0.2s;
}
.auth-skip:hover { color: var(--text); border-color: var(--muted); }

.user-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(217, 154, 102, 0.08);
    border: 1px solid var(--border);
    padding: 6px 14px; border-radius: 999px;
    font-size: 0.88rem; font-weight: 600;
    color: var(--text);
    cursor: pointer; transition: 0.2s;
}
.user-badge:hover { background: rgba(217, 154, 102, 0.15); }
.user-badge .avatar {
    width: 24px; height: 24px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex; align-items: center; justify-content: center;
    color: var(--bg); font-weight: 800; font-size: 0.75rem;
}
.user-badge .logout-icon {
    color: var(--muted); font-size: 0.8rem;
    padding: 0 4px; cursor: pointer;
}
.user-badge .logout-icon:hover { color: var(--danger); }

.locked-feature {
    position: relative;
}
.locked-feature::before {
    content: '\f023';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem; color: var(--accent);
    z-index: 2; pointer-events: none;
    filter: drop-shadow(0 0 20px rgba(217, 154, 102, 0.5));
}
.locked-feature > * { opacity: 0.3; pointer-events: none; filter: blur(2px); }

/* ============ قفل المميزات (للزوار غير المسجلين) ============ */
.feature-locked {
    position: relative;
    min-height: 200px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: rgba(214, 196, 170, 0.5);
    padding: 3rem 2rem;
    text-align: center;
    overflow: hidden;
}
.feature-locked .lock-icon {
    font-size: 2.5rem; color: var(--accent);
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 20px rgba(217, 154, 102, 0.4));
}
.feature-locked .lock-title {
    font-size: 1.2rem; font-weight: 700;
    color: var(--text); margin-bottom: 0.5rem;
}
.feature-locked .lock-desc {
    color: var(--muted); font-size: 0.95rem;
    margin-bottom: 1.5rem; max-width: 400px; margin-inline: auto;
    line-height: 1.7;
}
.feature-locked .lock-actions {
    display: flex; gap: 10px;
    justify-content: center; flex-wrap: wrap;
}
.feature-locked .lock-btn {
    display: inline-flex; align-items: center; gap: 8px;
    background: linear-gradient(135deg, var(--accent), #b87333);
    color: var(--bg);
    padding: 0.7rem 1.5rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    transition: 0.2s;
    border: none; cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
}
.feature-locked .lock-btn:hover {
    box-shadow: 0 0 20px rgba(217, 154, 102, 0.4);
    transform: translateY(-2px);
}
.feature-locked .lock-btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.feature-locked .lock-btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(217, 154, 102, 0.05);
    box-shadow: none;
}

.chat-locked-btn {
    display: none;
    position: fixed; bottom: 20px; left: 20px; z-index: 999;
    width: 60px; height: 60px; border-radius: 50%;
    background: var(--card);
    border: 2px solid var(--border);
    color: var(--muted);
    font-size: 1.4rem;
    cursor: not-allowed;
    align-items: center; justify-content: center;
}
.chat-locked-btn.show { display: flex; }

/* ============ تحسينات واجهة ============ */
.read-progress {
    position: fixed; top: 0; left: 0;
    height: 3px; width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
    z-index: 1000;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px rgba(217, 154, 102, 0.5);
}

.particles-bg {
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}
.particle {
    position: absolute;
    width: 2px; height: 2px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0;
    animation: floatUp 15s linear infinite;
    box-shadow: 0 0 6px var(--accent);
}
@keyframes floatUp {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.4; }
    90% { opacity: 0.4; }
    100% { transform: translateY(-100px) translateX(50px); opacity: 0; }
}

.card { position: relative; isolation: isolate; }
.card::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(217, 154, 102, 0.08),
        transparent 40%
    );
    opacity: 0; transition: opacity 0.4s;
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
}
.card:hover::before { opacity: 1; }

.live-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin: 3rem auto;
    max-width: 900px;
    padding: 0 1rem;
}
.stat-tile {
    background: linear-gradient(145deg, var(--card), rgba(214, 196, 170, 0.5));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
}
.stat-tile:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(217, 154, 102, 0.15);
}
.stat-tile::before {
    content: '';
    position: absolute; top: 0; right: 0;
    width: 60%; height: 60%;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0.05;
    transform: translate(20%, -20%);
}
.stat-num {
    font-family: var(--font-en);
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(120deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    line-height: 1;
    margin-bottom: 0.4rem;
}
.stat-tile-label {
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 500;
}
.stat-tile i {
    font-size: 1.4rem;
    color: var(--accent);
    margin-bottom: 0.6rem;
    opacity: 0.7;
}

.section-title {
    position: relative;
    display: inline-block;
    width: 100%;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px; height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    margin: 0.7rem auto 0;
    border-radius: 999px;
    box-shadow: 0 0 10px rgba(217, 154, 102, 0.5);
}

@keyframes glitch1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-1px, 1px); }
    40% { transform: translate(-1px, -1px); }
    60% { transform: translate(1px, 1px); }
    80% { transform: translate(1px, -1px); }
}
.glitch-hover:hover {
    animation: glitch1 0.3s linear;
}

.btn-primary, .btn-secondary, .auth-btn, .game-btn, .ai-btn {
    position: relative;
    overflow: hidden;
}
.btn-primary::after, .auth-btn::after, .ai-btn::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 0; height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}
.btn-primary:active::after, .auth-btn:active::after, .ai-btn:active::after {
    width: 300px; height: 300px;
    transition: 0s;
}

.hero-text h1 {
    position: relative;
}
.hero-text h1::before {
    content: '';
    position: absolute;
    top: -10px; right: -10px;
    width: 60px; height: 60px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
    opacity: 0.3;
    filter: blur(20px);
    animation: pulse 3s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
    .particle { display: none !important; }
    .read-progress { transition: none !important; }
}

/* ============ A11y ============ */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}