/* ==========================================================================
   Manasah LMS - Ultra-Premium Design System & RTL Styles
   Features: Dual-theme tokens (Light & Dark), Glassmorphism, Micro-animations
   ========================================================================== */

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

:root {
    color-scheme: light;
    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --border-subtle: rgba(226, 232, 240, 0.85);
    --border-hover: rgba(79, 70, 229, 0.45);
    --text-main: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-subtle: #94a3b8;
    --card-bg: #ffffff;
    --card-bg-glass: rgba(255, 255, 255, 0.95);
    --nav-bg: rgba(255, 255, 255, 0.96);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 0 0 1px rgba(226, 232, 240, 0.9);
    --card-shadow-hover: 0 20px 35px -10px rgba(79, 70, 229, 0.15), 0 0 0 1px rgba(99, 102, 241, 0.4);
    --glow-shadow: 0 20px 40px -15px rgba(79, 70, 229, 0.18);
    
    /* Brand Tokens */
    --brand-500: #6366f1;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --accent-emerald: #10b981;
    --accent-cyan: #06b6d4;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
}

html.dark {
    color-scheme: dark;
    --bg-page: #050811;
    --bg-surface: #0b1120;
    --bg-subtle: #111827;
    --border-color: rgba(255, 255, 255, 0.09);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-hover: rgba(99, 102, 241, 0.5);
    --text-main: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    --card-bg: #0b1120;
    --card-bg-glass: rgba(11, 17, 32, 0.88);
    --nav-bg: rgba(5, 8, 17, 0.92);
    --card-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    --card-shadow-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.35), 0 0 0 1px rgba(99, 102, 241, 0.5);
    --glow-shadow: 0 20px 45px -10px rgba(79, 70, 229, 0.3);
}

/* Base Body Styles */
html {
    overflow-x: hidden;
}
body {
    font-family: 'Tajawal', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    direction: rtl;
    text-align: right;
    background-color: var(--bg-page);
    color: var(--text-main);
    overflow-x: hidden;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =====================================================
   MOBILE RESPONSIVENESS FIXES
   ===================================================== */

/* Prevent any element from causing horizontal overflow */
*, *::before, *::after {
    max-width: 100vw;
}
img, video, iframe, canvas, svg {
    max-width: 100%;
    height: auto;
}

/* Touch-friendly horizontal scroll for tab bars */
.scroll-touch-x {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 16px;
}
.scroll-touch-x::-webkit-scrollbar {
    display: none;
}
.scroll-touch-x > * {
    scroll-snap-align: start;
    flex-shrink: 0;
}

/* Mobile-specific overrides */
@media (max-width: 639px) {
    /* Scale down large fixed glow/blur background elements on mobile */
    .fixed[class*="blur-"] {
        transform: scale(0.4);
        opacity: 0.5;
    }
    
    /* Prevent fixed decorative blurs from causing overflow */
    .fixed.pointer-events-none {
        right: auto !important;
        left: auto !important;
    }

    /* Tighter section padding on mobile */
    section {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }

    /* Reduce hero headline font-size for very small screens */
    .font-heading.font-black {
        word-break: break-word;
        overflow-wrap: break-word;
    }

    /* Better spacing for glass panels on mobile */
    .glass-panel {
        padding: clamp(1rem, 4vw, 1.5rem);
    }

    /* FAQ summary items - prevent text overflow */
    details summary span {
        word-break: break-word;
        line-height: 1.6;
    }

    /* Card elevation: reduce transform on mobile (saves GPU) */
    .card-glow:hover {
        transform: translateY(-2px);
    }

    /* Modals: full width on mobile */
    .fixed.inset-0 > div {
        max-height: 90vh;
        overflow-y: auto;
    }

    /* Sticky nav: ensure no horizontal overflow */
    header.sticky {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    /* Video player container aspect ratio */
    .aspect-video {
        aspect-ratio: 16 / 9;
        width: 100%;
    }

    /* Table responsiveness */
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }
}

/* Headings */
h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: 'Cairo', 'Tajawal', sans-serif;
    letter-spacing: -0.02em;
}

/* Custom Adaptive Scrollbar */
::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.4);
    border-radius: 9999px;
    transition: background 0.2s;
}
html.dark ::-webkit-scrollbar-thumb {
    background: rgba(71, 85, 105, 0.5);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--brand-600);
}

/* Dual-Theme Glassmorphism Panels */
.glass-panel {
    background: var(--card-bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
}

.glass-nav {
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

/* Interactive Card Elevation with Glow */
.card-glow {
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.card-glow:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--card-shadow-hover);
}

/* Subtle Tech Grid Pattern */
.tech-grid-pattern {
    background-size: 36px 36px;
    background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.65) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.65) 1px, transparent 1px);
}
html.dark .tech-grid-pattern {
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* Ambient Radial Mesh Gradients */
.ambient-mesh {
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.07) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.05) 0px, transparent 50%);
}

html.dark .ambient-mesh {
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.22) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.15) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
}

/* Floating Animations */
@keyframes float-gentle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-7px); }
}

.animate-float {
    animation: float-gentle 4s ease-in-out infinite;
}

/* Floating WhatsApp Pulse Animation */
@keyframes pulse-ring {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.65);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 16px rgba(37, 211, 102, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.btn-whatsapp-pulse {
    animation: pulse-ring 2.4s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
}

/* Fade In Animations */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.97);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fadeInScale 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Smooth Form Controls */
input, select, textarea {
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

/* Gradient Text Utilities */
.gradient-text {
    background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

html.dark .gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Theme Toggle Button Style */
.theme-toggle-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.875rem;
    padding: 0.5rem;
    transition: all 0.25s ease;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.theme-toggle-btn:hover {
    border-color: var(--brand-500);
    transform: scale(1.05);
}

/* Modern Marching Curve Animations (Who We Teach) */
@keyframes marchingDashes {
    to {
        stroke-dashoffset: -24;
    }
}
.marching-curve {
    stroke-dasharray: 6 5;
    animation: marchingDashes 1.2s linear infinite;
}

/* Concentric Pulse Rings */
@keyframes pulseRing {
    0% { transform: scale(0.9); opacity: 0.7; }
    50% { transform: scale(1.18); opacity: 0.15; }
    100% { transform: scale(0.9); opacity: 0.7; }
}
.pulse-ring-1 {
    animation: pulseRing 3.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.pulse-ring-2 {
    animation: pulseRing 3.2s cubic-bezier(0.4, 0, 0.6, 1) infinite 1.6s;
}

/* Tooltips on CTA buttons */
.btn-tip-wrap {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
}
.btn-tip {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 9999px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--brand-600);
    border: 1px solid rgba(99, 102, 241, 0.25);
    margin-bottom: 6px;
    display: inline-block;
}
html.dark .btn-tip {
    background: rgba(99, 102, 241, 0.2);
    color: var(--brand-400);
    border-color: rgba(99, 102, 241, 0.4);
}

/* Speech Bubble Tail */
.speech-bubble {
    position: relative;
}
.speech-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 36px;
    border-width: 8px 8px 0 8px;
    border-style: solid;
    border-color: var(--card-bg-glass) transparent transparent transparent;
}