/* Mawzoon Qudrat Unified Design System */
:root {
    --primary: #0284c7;
    --primary-dark: #0369a1;
    --primary-light: #e0f2fe;
    --accent-gold: #d97706;
    --accent-gold-light: #fef3c7;
    --success: #059669;
    --success-light: #d1fae5;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --bg-page: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-input: #F1F5F9;
    --border: #E2E8F0;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --font: 'Tajawal', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background-color: var(--bg-page);
    color: var(--text-main);
    direction: rtl;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Navbar */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
}
.brand-logo { width: 38px; height: 38px; object-fit: contain; }
.brand-title { font-size: 1.35rem; font-weight: 900; letter-spacing: -0.5px; }
.brand-badge {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #FFFFFF;
    font-size: 0.72rem;
    padding: 2px 7px;
    border-radius: 6px;
    font-weight: 800;
}

.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.92rem;
    transition: color 0.2s;
    cursor: pointer;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }

.nav-cta { display: flex; align-items: center; gap: 10px; }
.btn-nav-login {
    background: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border);
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 800;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn-nav-login:hover { border-color: var(--primary); color: var(--primary); }
.btn-nav-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #FFFFFF;
    border: none;
    padding: 8px 18px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 800;
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn-nav-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(2, 132, 199, 0.35); }

/* Frosted Cards */
.dash-card {
    background: #FFFFFF;
    border: 1.5px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    transition: all 0.2s;
}

/* Animations */
@keyframes modalPop {
    from { opacity: 0; transform: scale(0.93) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Mobile Bottom Navigation Bar */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1.5px solid var(--border);
    z-index: 9999;
    align-items: center;
    justify-content: space-around;
    padding: 6px 10px 4px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.04);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #64748B;
    font-size: 0.72rem;
    font-weight: 700;
    gap: 3px;
    transition: color 0.15s;
    flex: 1;
    touch-action: manipulation;
}
.mobile-nav-item .nav-icon {
    font-size: 1.25rem;
    line-height: 1;
}
.mobile-nav-item.active {
    color: var(--primary);
    font-weight: 900;
}
.mobile-nav-item.active .nav-icon {
    transform: scale(1.1);
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    body {
        padding-bottom: 74px !important;
    }
    .site-header {
        padding: 10px 16px;
    }
    .site-header .nav-links {
        display: none !important; /* Managed by bottom bar on mobile */
    }
    .mobile-bottom-nav {
        display: flex !important;
    }
    .container {
        padding: 0 14px;
    }

    /* Practice filter pills mobile horizontal scroller */
    .practice-filters {
        display: flex !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        flex-wrap: nowrap !important;
        gap: 8px !important;
        padding: 6px 4px 12px !important;
        scrollbar-width: none !important;
    }
    .practice-filters::-webkit-scrollbar {
        display: none;
    }
    .filter-pill {
        flex-shrink: 0 !important;
        font-size: 0.85rem !important;
        padding: 8px 14px !important;
        white-space: nowrap !important;
    }

    /* Question card mobile */
    .q-card {
        padding: 20px 16px !important;
        border-radius: 18px !important;
    }
    .q-opt-btn {
        padding: 12px 14px !important;
        font-size: 0.96rem !important;
        min-height: 52px !important;
        gap: 10px !important;
    }
    .q-opt-btn .opt-letter {
        width: 32px !important;
        height: 32px !important;
        font-size: 0.88rem !important;
    }

    /* Blackboard Modal Mobile */
    .sim-board-overlay {
        padding: 8px !important;
        align-items: flex-end !important;
    }
    .sim-board-window {
        max-height: 94vh !important;
        border-radius: 22px 22px 0 0 !important;
        padding: 18px 14px !important;
    }
}