/* =========================================
   1. الإعدادات الأساسية (Base Settings)
   ========================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: background-color 0.4s ease, color 0.4s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-image: radial-gradient(circle at top right, rgba(255,255,255,0.05) 0%, transparent 40%);
}

/* =========================================
   2. الفئات المساعدة (Utility Classes)
   ========================================= */
.hidden { display: none !important; }
.active { display: block; animation: fadeIn 0.5s ease; }
.text-center { text-align: center; }
.accent { color: var(--accent); transition: color 0.3s ease; }
.error-msg { color: #ff4757; font-size: 14px; margin-top: 10px; min-height: 20px; }
.w-100 { width: 100%; }

/* =========================================
   3. الحاويات وتأثير الزجاج (Glassmorphism)
   ========================================= */
.container {
    width: 100%;
    max-width: 500px;
    margin: 40px auto;
    padding: 20px;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

/* =========================================
   4. المدخلات والأزرار (Inputs & Buttons)
   ========================================= */
input[type="text"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 15px;
    margin: 15px 0;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 8px rgba(162, 155, 254, 0.2);
}

button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
}

.btn-secondary:hover {
    background: var(--accent);
    color: #fff;
}

button:disabled {
    background-color: #555 !important;
    border-color: #555 !important;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* =========================================
   5. الصفحة الرئيسية (Landing Page)
   ========================================= */
.landing-page { padding: 0; justify-content: flex-start; }

.navbar {
    width: 100%; max-width: 1200px; margin: 20px auto; padding: 15px 30px;
    display: flex; justify-content: space-between; align-items: center; border-radius: 50px;
}
.logo { display: flex; align-items: center; }
.theme-switcher-nav button {
    background: transparent; border: none; color: var(--text-primary); font-size: 18px;
    cursor: pointer; margin-left: 15px; transition: color 0.3s ease; padding: 0; width: auto;
}
.theme-switcher-nav button:hover { color: var(--accent); }

.hero-section {
    width: 100%; padding: 80px 20px; display: flex; justify-content: center;
    align-items: center; min-height: 70vh;
}
.hero-content { max-width: 800px; }
.badge {
    display: inline-block; padding: 8px 15px; background: rgba(162, 155, 254, 0.1);
    color: var(--accent); border: 1px solid var(--accent); border-radius: 30px;
    font-size: 14px; font-weight: bold; margin-bottom: 20px;
}
.hero-title { font-size: 4rem; line-height: 1.1; margin-bottom: 20px; }
.hero-subtitle { font-size: 1.2rem; color: var(--text-secondary); margin-bottom: 40px; line-height: 1.6; }

.login-box { max-width: 600px; margin: 0 auto; padding: 40px; }
.input-group { position: relative; width: 100%; }
.input-icon {
    position: absolute; left: 20px; top: 50%; transform: translateY(-50%);
    color: var(--text-secondary); font-size: 20px;
}
.input-group input { padding-left: 55px; font-family: monospace; }
.bonus-text { margin-top: 15px; font-size: 14px; color: #00b894; font-weight: bold; }

.features-section { width: 100%; max-width: 1200px; margin: 0 auto 80px; padding: 0 20px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.feature-card { text-align: center; padding: 40px 30px; transition: transform 0.3s ease; }
.feature-card:hover { transform: translateY(-10px); }
.feature-card h3 { margin-bottom: 15px; font-size: 1.5rem; }
.feature-card p { color: var(--text-secondary); line-height: 1.6; }

footer { text-align: center; padding: 30px; color: var(--text-secondary); width: 100%; border-top: 1px solid var(--border-color); }

/* =========================================
   6. الأنيميشن والتجاوب الأساسي
   ========================================= */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .navbar { border-radius: 20px; flex-direction: column; gap: 15px; padding: 15px; }
}