/* ==========================================================================
   CSS Variables & Theme Setup
   ========================================================================== */
:root {
    /* Light Mode Variables (Fallback) */
    --primary: #0057FF;
    --secondary: #f8fafc;
    --accent: #1E90FF;
    --bg-color: #f1f5f9;
    --text-main: #020617;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.05);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    --primary: #0057FF;
    --secondary: #0F172A;
    --accent: #1E90FF;
    --bg-color: #020617;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Global Reset & Typography
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none; /* For custom cursor */
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

.fw-black { font-weight: 900; }
.py-6 { padding-top: 100px; padding-bottom: 100px; }
.text-sm { font-size: 0.875rem; }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }

/* ==========================================================================
   Three.js & Background Effects
   ========================================================================== */
#three-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
    opacity: 0.6;
}

#particles-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.blur-layer {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
}
.layer-1 { width: 400px; height: 400px; background: var(--primary); top: 10%; right: -100px; }
.layer-2 { width: 300px; height: 300px; background: var(--accent); bottom: 10%; left: -50px; }

/* ==========================================================================
   Custom Cursor
   ========================================================================== */
.cursor-glow {
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px var(--primary), 0 0 40px var(--accent);
    transition: width 0.2s, height 0.2s;
    mix-blend-mode: screen;
}

/* ==========================================================================
   UI Components (Glassmorphism, Gradients, Buttons)
   ========================================================================== */
.gradient-text {
    background: linear-gradient(90deg, var(--accent), var(--primary), #00d2ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
    animation: gradientFlow 5s ease infinite;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.4s ease, border-color 0.4s ease;
    overflow: hidden;
    position: relative;
}

.glass-card::before {
    content: "";
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.05), transparent);
    transform: skewX(-20deg);
    transition: 0.7s;
}

.glass-card:hover::before {
    left: 150%;
}

.glass-card:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
}

.liquid-btn {
    position: relative;
    overflow: hidden;
    background: var(--primary);
    border: none;
    border-radius: 50px;
    padding: 12px 30px;
    color: #fff;
    font-weight: 700;
    z-index: 1;
    transition: 0.3s;
}
.liquid-btn::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 300px; height: 300px;
    background: var(--accent);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: 0.5s;
    z-index: -1;
}
.liquid-btn:hover::before { transform: translate(-50%, -50%) scale(1); }

.btn-outline-glass {
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text-main);
    border-radius: 50px;
    padding: 12px 30px;
    font-weight: 700;
    transition: 0.3s;
}
.btn-outline-glass:hover {
    background: var(--glass-bg);
    border-color: var(--primary);
    color: var(--text-main);
}

/* ==========================================================================
   Floating Actions & Navbar
   ========================================================================== */
.floating-actions {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}
.glass-btn {
    width: 50px; height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    display: flex; justify-content: center; align-items: center;
    font-size: 1.2rem;
    transition: 0.3s;
}
.glass-btn:hover { background: var(--primary); color: #fff; transform: scale(1.1); }
.whatsapp-btn { background: #25D366; color: white; border: none; }
.whatsapp-btn:hover { background: #1ebd5a; box-shadow: 0 0 20px rgba(37, 211, 102, 0.5); }

.glass-navbar {
    background: transparent;
    transition: 0.4s;
    padding: 20px 0;
}
.glass-navbar.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    padding: 10px 0;
}
.navbar-brand img { max-height: 40px; }
.nav-link { color: var(--text-main) !important; font-weight: 600; margin: 0 10px; position: relative; }
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0%; height: 2px;
    background: var(--primary); transition: 0.3s;
}
.nav-link:hover::after { width: 100%; }

/* ==========================================================================
   Sections Layout
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
}
.accent-text { color: var(--accent); }

.animated-line {
    width: 80px; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    position: relative;
}
.animated-line::after {
    content: ''; position: absolute; top: -2px; left: 0; width: 8px; height: 8px;
    background: #fff; border-radius: 50%; animation: moveLine 3s infinite linear;
}
@keyframes moveLine { 0% { left: 0; } 50% { left: 100%; } 100% { left: 0; } }

/* Services */
.service-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
    display: inline-block;
    transition: 0.4s;
}
.glass-card:hover .service-icon { transform: scale(1.2) rotateY(180deg); color: var(--accent); }

/* Timeline */
.timeline { position: relative; padding: 20px 0; }
.timeline::before {
    content: ''; position: absolute; top: 0; right: 50%; transform: translateX(50%);
    width: 2px; height: 100%; background: var(--glass-border);
}
.timeline-item { margin-bottom: 50px; position: relative; width: 50%; padding: 0 40px; }
.timeline-item:nth-child(odd) { right: 0; text-align: left; }
.timeline-item:nth-child(even) { right: 50%; text-align: right; }
.timeline-dot {
    position: absolute; top: 0; right: -10px; width: 20px; height: 20px;
    background: var(--primary); border-radius: 50%; box-shadow: 0 0 10px var(--primary);
}
.timeline-item:nth-child(even) .timeline-dot { right: auto; left: -10px; }
@media(max-width: 768px) {
    .timeline::before { right: 20px; }
    .timeline-item { width: 100%; right: 0 !important; padding: 0 50px 0 0 !important; text-align: right !important; }
    .timeline-dot { right: 10px !important; left: auto !important; }
}

/* Portfolio Grid */
.portfolio-img { width: 100%; height: 200px; object-fit: cover; border-bottom: 1px solid var(--glass-border); }
.tech-badge { background: rgba(0,87,255,0.1); color: var(--primary); padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; margin: 2px; display: inline-block; }

/* Tech Track */
.tech-slider-wrapper { display: flex; width: 200%; animation: slide 20s linear infinite; }
.tech-track { display: flex; justify-content: space-around; width: 100%; align-items: center; }
.tech-icon { font-size: 3rem; color: var(--text-muted); transition: 0.3s; }
.tech-icon:hover { color: var(--primary); transform: scale(1.2); }
@keyframes slide { 0% { transform: translateX(0); } 100% { transform: translateX(50%); } } /* RTL trick */

/* Forms & Inputs */
.custom-input {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 12px 20px;
    border-radius: 10px;
}
.custom-input:focus {
    background: rgba(255,255,255,0.05);
    border-color: var(--primary);
    color: var(--text-main);
    box-shadow: none;
}
.custom-input::placeholder { color: var(--text-muted); }

/* Admin Overlay */
.admin-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8); backdrop-filter: blur(5px);
    z-index: 2000; display: none; justify-content: center; align-items: center;
}
.admin-overlay.active { display: flex; }
.admin-modal { width: 400px; max-width: 90%; }
.admin-dashboard { width: 600px; max-width: 95%; max-height: 90vh; display: flex; flex-direction: column; }
.admin-scroll-area { overflow-y: auto; flex-grow: 1; padding-right: 10px; }