:root {
    --blue: #1a5fa8;
    --blue-dark: #0d3d6e;
    --blue-light: #2979c9;
    --orange: #d94f1a;
    --orange-light: #f06030;
    --bg: #0a1628;
    --bg2: #0d1f3a;
    --card: rgba(255,255,255,0.04);
    --card-border: rgba(255,255,255,0.08);
    --text: #ffffff;
    --text-muted: rgba(255,255,255,0.6);
    --gray: #8a9ab5;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

body.light {
    --bg: #f8fafc;
    --bg2: #f1f5f9;
    --card: rgba(255,255,255,0.95);
    --card-border: rgba(0,0,0,0.08);
    --text: #0f172a;
    --text-muted: #64748b;
    --gray: #94a3b8;
    --glass: rgba(0, 0, 0, 0.02);
    --glass-border: rgba(0, 0, 0, 0.05);
}

/* ===== AUTO THEME DETECTION ===== */
@media (prefers-color-scheme: light) {
    body:not(.dark-forced) {
        --bg: #f8fafc;
        --bg2: #f1f5f9;
        --card: rgba(255,255,255,0.95);
        --card-border: rgba(0,0,0,0.08);
        --text: #0f172a;
        --text-muted: #64748b;
        --gray: #94a3b8;
        --glass: rgba(0, 0, 0, 0.02);
        --glass-border: rgba(0, 0, 0, 0.05);
    }
}

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

body {
    font-family: 'Tajawal', 'Cairo', 'Poppins', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    transition: background 0.4s, color 0.4s;
    line-height: 1.6;
}

/* ===== PRELOADER ===== */
#preloader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg); z-index: 9999;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    transition: opacity 0.5s ease-out, visibility 0.5s;
}
.loader-logo { width: 120px; margin-bottom: 20px; animation: pulse 2s infinite; }
.loader-bar { width: 200px; height: 3px; background: var(--card-border); border-radius: 5px; position: relative; overflow: hidden; }
.loader-bar::after { content: ''; position: absolute; left: -100%; width: 100%; height: 100%; background: var(--orange); animation: loading 1.5s infinite; }
@keyframes loading { 0% { left: -100%; } 100% { left: 100%; } }

/* ===== ANNOUNCEMENT BAR ===== */
.announcement-bar {
    background: linear-gradient(90deg, var(--orange), var(--orange-light));
    color: white; text-align: center; padding: 8px 5%; font-size: 0.85rem;
    font-weight: 700; position: relative; z-index: 1001;
}

/* ===== NAVBAR ===== */
nav {
    position: fixed; top: 35px; left: 0; right: 0; z-index: 1000;
    background: rgba(10, 22, 40, 0.85);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0 5%;
    display: flex; align-items: center; justify-content: space-between;
    height: 80px; transition: all 0.3s ease;
}
body.scrolled nav { top: 0; }
body.en { direction: ltr; }

.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo-img { height: 50px; width: auto; border-radius: 8px; }
.nav-logo-text { font-size: 1.2rem; font-weight: 800; color: var(--text); }
.nav-logo-text span { color: var(--orange); }

.nav-links { display: flex; align-items: center; gap: 20px; list-style: none; }
.nav-links a {
    color: var(--text-muted); text-decoration: none;
    font-size: 0.9rem; font-weight: 600; transition: all 0.3s;
}
.nav-links a:hover { color: var(--orange); }

.nav-controls { display: flex; gap: 10px; align-items: center; }
.theme-btn, .lang-btn {
    background: var(--card); border: 1px solid var(--card-border);
    color: var(--text); padding: 8px 15px; border-radius: 10px;
    cursor: pointer; font-weight: 700; transition: 0.3s;
}
.theme-btn:hover, .lang-btn:hover { background: rgba(255,255,255,0.1); }

/* ===== SECTIONS ===== */
section { padding: 100px 8%; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-size: 2.5rem; font-weight: 900; margin-bottom: 15px; }
.section-title span { color: var(--orange); }

/* ===== INTERACTIVE TOOLS ===== */
.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.tool-card {
    background: var(--card); border: 1px solid var(--card-border);
    padding: 40px; border-radius: 30px; transition: 0.4s;
    backdrop-filter: blur(10px);
}
.tool-card:hover { border-color: var(--orange); transform: translateY(-5px); }
.tool-card h3 { font-size: 1.5rem; margin-bottom: 20px; color: var(--orange); }

.checker-input {
    width: 100%; padding: 15px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--card-border); border-radius: 12px;
    color: white; font-size: 1rem; margin-bottom: 20px;
}
.checker-result { margin-top: 20px; padding: 15px; border-radius: 12px; display: none; }

.calc-input-group { margin-bottom: 15px; }
.calc-input-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; }
.calc-input {
    width: 100%; padding: 12px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--card-border); border-radius: 10px; color: white;
}

/* ===== DOWNLOAD CENTER ===== */
.downloads-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.download-item {
    background: var(--bg2); border: 1px solid var(--card-border);
    padding: 25px; border-radius: 20px; display: flex; align-items: center; gap: 20px;
    text-decoration: none; color: inherit; transition: 0.3s;
    backdrop-filter: blur(10px);
}
.download-item:hover { background: var(--orange); color: white; transform: scale(1.02); }
.download-icon { font-size: 2rem; }
.download-info h5 { font-size: 1.1rem; margin-bottom: 5px; }
.download-info p { font-size: 0.8rem; opacity: 0.7; }

/* ===== HERO & STATS ===== */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: space-between; padding: 120px 8%; }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 900; }
.hero-visual img { width: 100%; max-width: 500px; animation: float 6s infinite ease-in-out; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.stat-card { background: var(--card); padding: 30px; border-radius: 20px; text-align: center; backdrop-filter: blur(10px); }
.stat-card h3 { font-size: 2.5rem; color: var(--orange); }

/* ===== SMART WHATSAPP SUPPORT ===== */
.whatsapp-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.whatsapp-menu {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 280px;
    background: var(--card);
    backdrop-filter: blur(15px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    display: none;
    transform-origin: bottom right;
    animation: waPop 0.3s ease-out;
}

@keyframes waPop {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.wa-header {
    background: #25d366;
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
}

.wa-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    color: var(--text);
    text-decoration: none;
    transition: background 0.3s;
    border-bottom: 1px solid var(--card-border);
}

.wa-item:hover {
    background: rgba(255,255,255,0.05);
}

.wa-item i {
    color: #25d366;
    font-size: 1.2rem;
}

.whatsapp-float {
    width: 60px;
    height: 60px;
    background: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    border: none;
    cursor: pointer;
    transition: transform 0.3s;
    animation: bounce 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes pulse { 0% { transform: scale(1); } 50% { transform: scale(1.05); } 100% { transform: scale(1); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }

/* Mobile */
@media (max-width: 992px) {
    .hero { flex-direction: column; text-align: center; }
    .tools-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: 0.3s;
    cursor: pointer;
    border: none;
}
.btn-primary { background: var(--orange); color: white; }
.btn-primary:hover { background: var(--orange-light); transform: translateY(-2px); }
.btn-secondary { background: var(--blue); color: white; }
.btn-secondary:hover { background: var(--blue-light); transform: translateY(-2px); }

.w-full { width: 100%; }

/* ===== PORTFOLIO SECTION ===== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.portfolio-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.portfolio-card:hover {
    border-color: var(--orange);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(217, 79, 26, 0.2);
}

.portfolio-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    transition: transform 0.4s ease;
}

.portfolio-card:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-card h3 {
    padding: 20px 20px 10px;
    font-size: 1.2rem;
    color: var(--text);
}

.portfolio-card p {
    padding: 0 20px 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== CONTACT FORM ===== */
.contact-form {
    background: var(--card);
    border: 1px solid var(--card-border);
    padding: 30px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 20px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--orange);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(217, 79, 26, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-message {
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
}

.form-message.success {
    background: rgba(37, 211, 102, 0.1);
    border: 1px solid #25d366;
    color: #25d366;
}

.form-message.error {
    background: rgba(217, 79, 26, 0.1);
    border: 1px solid var(--orange);
    color: var(--orange);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    #contact > div {
        grid-template-columns: 1fr !important;
    }
    
    .contact-form {
        margin-top: 30px;
    }
}