/* تصميم الدخول الاحترافي الجديد */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

/* إعدادات عامة */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* خلفية متحركة */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
}

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

/* حاوية الصفحة الرئيسية */
.user-selection-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.selection-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
    max-width: 900px;
    width: 100%;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    transition: all 0.3s ease;
}

.selection-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.selection-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* عنوان الصفحة */
.main-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.main-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.main-title p {
    font-size: 1.1rem;
    color: #6b7280;
    animation: fadeInUp 1s ease 0.2s both;
}

/* خيارات المستخدمين */
.user-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.user-option {
    text-decoration: none;
    display: block;
    position: relative;
}

.user-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.user-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s ease;
}

.user-card:hover::before {
    left: 100%;
}

.user-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.user-option.student .user-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(37, 99, 235, 0.3);
}

.user-option.moderator .user-card:hover {
    border-color: var(--success-color);
    box-shadow: 0 15px 30px rgba(16, 185, 129, 0.3);
}

.user-option.admin .user-card:hover {
    border-color: var(--warning-color);
    box-shadow: 0 15px 30px rgba(245, 158, 11, 0.3);
}

.user-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transition: all 0.3s ease;
}

.student .user-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.moderator .user-icon {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.admin .user-icon {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
}

.user-card:hover .user-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.user-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.user-card p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* تصميم صفحات الدخول */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
    max-width: 400px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.login-header .login-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

/* تصميم النماذج */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    position: relative;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input-group {
    position: relative;
}

.form-input-group .form-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
    font-size: 1.1rem;
    z-index: 1;
}

.form-input-group .form-input {
    padding-left: 3rem;
}

/* أزرار */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: #6b7280;
    color: white;
    margin-top: 1rem;
    width: 100%;
}

.btn-secondary:hover {
    background: #4b5563;
    transform: translateY(-2px);
}

/* رسائل الخطأ والتنبيه */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: none;
}

.alert-danger {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.text-danger {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* روابط إضافية */
.login-links {
    text-align: center;
    margin-top: 2rem;
}

.login-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.login-links a:hover {
    text-decoration: underline;
}

/* انيميشن */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease;
}

/* استجابة للأجهزة المحمولة */
@media (max-width: 768px) {
    .selection-card {
        padding: 2rem;
        margin: 1rem;
    }
    
    .main-title h2 {
        font-size: 2rem;
    }
    
    .user-options {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .login-card {
        padding: 2rem;
        margin: 1rem;
    }
    
    .user-card {
        padding: 1.5rem;
    }
    
    .user-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* تحسينات إضافية */
.login-card {
    animation: slideInUp 0.6s ease;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* تأثير التدرج المتحرك */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape:nth-child(1) {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 120px;
    height: 120px;
    background: var(--accent-color);
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape:nth-child(3) {
    width: 60px;
    height: 60px;
    background: var(--success-color);
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}