/* Revolutionary Login Design - Modern & Sophisticated */

/* CSS Variables for Consistent Theming */
:root {
    /* Primary Blue Color Palette - Flat Colors Only */
    --primary-blue: #3b82f6;
    --primary-blue-dark: #1e40af;
    --primary-blue-light: #60a5fa;
    --primary-blue-ultra-light: #dbeafe;
    
    /* Secondary Colors */
    --secondary-teal: #06b6d4;
    --secondary-emerald: #10b981;
    --secondary-amber: #f59e0b;
    --secondary-rose: #f43f5e;
    --secondary-purple: #8b5cf6;
    --secondary-indigo: #6366f1;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-arabic: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-english: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-arabic);
    background: var(--primary-blue);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    direction: rtl;
    color: var(--gray-700);
    line-height: 1.6;
}

/* Geometric Background */
.geometric-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.geometric-shape {
    position: absolute;
    opacity: 0.1;
    animation: float 20s ease-in-out infinite;
}

.shape-1 {
    top: 10%;
    left: 10%;
    width: 120px;
    height: 120px;
    background: var(--white);
    border-radius: 50%;
    animation-delay: 0s;
}

.shape-2 {
    top: 20%;
    right: 15%;
    width: 80px;
    height: 80px;
    background: var(--secondary-teal);
    border-radius: var(--radius-lg);
    animation-delay: 2s;
}

.shape-3 {
    bottom: 30%;
    left: 20%;
    width: 100px;
    height: 100px;
    background: var(--secondary-emerald);
    border-radius: 50%;
    animation-delay: 4s;
}

.shape-4 {
    bottom: 15%;
    right: 25%;
    width: 60px;
    height: 60px;
    background: var(--secondary-amber);
    border-radius: var(--radius-md);
    animation-delay: 6s;
}

.shape-5 {
    top: 50%;
    left: 5%;
    width: 90px;
    height: 90px;
    background: var(--secondary-purple);
    border-radius: 50%;
    animation-delay: 8s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(120deg);
    }
    66% {
        transform: translateY(10px) rotate(240deg);
    }
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--white);
    border-radius: 50%;
    opacity: 0.6;
    animation: particle-float 4s ease-in-out infinite;
}

.particle:nth-child(1) { top: 20%; left: 25%; animation-delay: 0s; }
.particle:nth-child(2) { top: 40%; left: 75%; animation-delay: 1s; }
.particle:nth-child(3) { top: 60%; left: 45%; animation-delay: 2s; }
.particle:nth-child(4) { top: 80%; left: 65%; animation-delay: 3s; }
.particle:nth-child(5) { top: 30%; left: 85%; animation-delay: 4s; }

@keyframes particle-float {
    0%, 100% {
        transform: translateY(0px);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-15px);
        opacity: 1;
    }
}

/* Main Login Container */
.login-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 2;
}

/* Side Panel */
.login-side-panel {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    position: relative;
    /* إصلاحات السيرفر - منع الفيديو من الخروج من الحاوية */
    max-width: 50%;
    overflow: hidden;
    contain: layout style paint;
}

.side-content {
    text-align: center;
    color: var(--white);
    max-width: 400px;
}

.brand-section {
    margin-bottom: var(--spacing-3xl);
}

.brand-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.brand-icon i {
    font-size: 2rem;
    color: var(--white);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.brand-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.brand-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-5px);
}

.feature-item i {
    font-size: 1.25rem;
    color: var(--secondary-emerald);
}

.feature-item span {
    font-size: 1rem;
    color: var(--white);
}

/* Main Login Panel */
.login-main-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--white);
}

.login-card {
    width: 100%;
    max-width: 480px;
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
}

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.logo-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-xl);
}

.logo-container img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-blue-ultra-light);
    animation: logo-float 3s ease-in-out infinite;
}

.logo-glow {
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: var(--primary-blue);
    border-radius: 50%;
    opacity: 0.2;
    animation: glow-pulse 2s ease-in-out infinite;
    z-index: -1;
}

@keyframes logo-float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.1); }
}

.welcome-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
}

.welcome-subtitle {
    font-size: 1.1rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* Error Alert */
.error-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: slideInDown 0.5s ease;
}

.error-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-icon i {
    color: var(--secondary-rose);
    font-size: 1.25rem;
}

.error-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.error-title {
    font-weight: 600;
    color: var(--secondary-rose);
    font-size: 0.9rem;
}

.error-message {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.4;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Modern Form */
.modern-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.125rem;
    transition: var(--transition-normal);
    z-index: 2;
}

.modern-input {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-3xl) var(--spacing-lg) var(--spacing-lg);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    background: var(--white);
    color: var(--gray-700);
    transition: var(--transition-normal);
    outline: none;
    direction: ltr;
}

.modern-input::placeholder {
    color: var(--gray-400);
    direction: rtl;
}

.modern-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-border {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: var(--transition-normal);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.input-container.focused .input-icon {
    color: var(--primary-blue);
    transform: translateY(-50%) scale(1.1);
}

.input-container.focused .input-border {
    transform: scaleX(1);
}

.input-container.success .modern-input {
    border-color: var(--secondary-emerald);
}

.input-container.success .input-icon {
    color: var(--secondary-emerald);
}

.input-container.error .modern-input {
    border-color: var(--secondary-rose);
}

.input-container.error .input-icon {
    color: var(--secondary-rose);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
    z-index: 2;
}

.password-toggle:hover {
    color: var(--primary-blue);
    background: rgba(59, 130, 246, 0.1);
}

.password-toggle.active {
    color: var(--primary-blue);
}

/* Form Options */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--spacing-lg) 0;
}

.custom-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.custom-checkbox input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    background: var(--white);
}

.checkmark i {
    font-size: 0.75rem;
    color: var(--white);
    opacity: 0;
    transition: var(--transition-normal);
}

.custom-checkbox input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.custom-checkbox input[type="checkbox"]:checked + .checkmark i {
    opacity: 1;
}

.checkbox-text {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.forgot-password {
    font-size: 0.875rem;
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition-normal);
}

.forgot-password:hover {
    color: var(--primary-blue-dark);
    text-decoration: underline;
}

/* Login Submit Button */
.login-submit-btn {
    position: relative;
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.login-submit-btn:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.login-submit-btn.loading {
    cursor: not-allowed;
    background: var(--gray-400);
}

.btn-text {
    transition: var(--transition-normal);
}

.btn-icon {
    transition: var(--transition-normal);
}

.btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: var(--transition-normal);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Ripple Effect */
.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-200);
}

.login-footer p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.support-link {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition-normal);
}

.support-link:hover {
    color: var(--primary-blue-dark);
    text-decoration: underline;
}

/* Shake Animation for Errors */
@keyframes shake {
    0%, 20%, 40%, 60%, 80%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .login-container {
        flex-direction: column;
    }
    
    .login-side-panel {
        flex: none;
        min-height: 40vh;
        padding: var(--spacing-xl);
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }
    
    .brand-section h2 {
        font-size: 2rem;
    }
    
    .features-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .login-side-panel {
        min-height: 30vh;
        padding: var(--spacing-lg);
    }
    
    .brand-section h2 {
        font-size: 1.75rem;
    }
    
    .brand-section p {
        font-size: 1rem;
    }
    
    .features-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .feature-item {
        padding: var(--spacing-sm);
    }
    
    .login-main-panel {
        padding: var(--spacing-lg);
    }
    
    .login-card {
        padding: var(--spacing-xl);
    }
    
    .welcome-title {
        font-size: 1.875rem;
    }
    
    .welcome-subtitle {
        font-size: 1rem;
    }
    
    .modern-input {
        padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    }
    
    .login-submit-btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .login-side-panel {
        min-height: 25vh;
        padding: var(--spacing-md);
    }
    
    .brand-icon {
        width: 60px;
        height: 60px;
    }
    
    .brand-icon i {
        font-size: 1.5rem;
    }
    
    .brand-section h2 {
        font-size: 1.5rem;
    }
    
    .login-card {
        padding: var(--spacing-lg);
    }
    
    .welcome-title {
        font-size: 1.5rem;
    }
    
    .logo-container img {
        width: 60px;
        height: 60px;
    }
}

/* High DPI Displays */
@media (min-resolution: 2dppx) {
    .geometric-shape {
        opacity: 0.08;
    }
    
    .particle {
        opacity: 0.4;
    }
}

/* Print Styles */
@media print {
    .geometric-background,
    .login-side-panel {
        display: none;
    }
    
    .login-container {
        display: block;
    }
    
    .login-main-panel {
        background: var(--white);
    }
    
    .login-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible for Better Accessibility */
.login-submit-btn:focus-visible,
.modern-input:focus-visible,
.password-toggle:focus-visible,
.custom-checkbox:focus-visible,
.forgot-password:focus-visible,
.support-link:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* فيديو الخلفية في الجانب الأيسر */
.video-background-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
    border-radius: var(--radius-2xl) 0 0 var(--radius-2xl);
    /* إصلاحات السيرفر - منع الفيديو من تغطية الشاشة */
    max-width: 100%;
    max-height: 100%;
    contain: layout style paint;
    
    /* خلفية احتياطية في حالة عدم تحميل الفيديو */
    background: linear-gradient(
        135deg,
        var(--primary-blue) 0%,
        var(--primary-blue-dark) 25%,
        var(--secondary-teal) 50%,
        var(--secondary-emerald) 75%,
        var(--primary-blue) 100%
    );
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

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

#youtube-background {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 110%;
    height: 110%;
    min-width: 110%;
    min-height: 110%;
    transform: translate(-50%, -50%) scale(1.05);
    pointer-events: none;
    object-fit: cover;
    /* إصلاحات السيرفر - منع الفيديو من الخروج من الحاوية */
    max-width: 120%;
    max-height: 120%;
    contain: layout style paint;
    /* تحسينات الأداء للسرعة القصوى */
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
    transform-style: preserve-3d;
    /* تسريع الرسم */
    image-rendering: optimizeSpeed;
    image-rendering: -webkit-optimize-contrast;
    /* تحسين الذاكرة */
    contain: layout style paint;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(59, 130, 246, 0.15) 0%,
        rgba(30, 64, 175, 0.1) 25%,
        rgba(6, 182, 212, 0.08) 50%,
        rgba(16, 185, 129, 0.1) 75%,
        rgba(59, 130, 246, 0.15) 100%
    );
    z-index: 2;
    backdrop-filter: blur(1px);
    border-radius: var(--radius-2xl) 0 0 var(--radius-2xl);
}

/* تحسين موضع المحتوى فوق الفيديو */
.login-side-panel .side-content {
    position: relative;
    z-index: 3;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* مؤشر تحميل الفيديو */
.video-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    transition: opacity var(--transition-slow);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top: 3px solid var(--white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite; /* أسرع من 1s إلى 0.6s */
    margin-bottom: var(--spacing-sm);
    /* تحسينات الأداء */
    will-change: transform;
    transform-origin: center;
}

.loading-text {
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: rgba(59, 130, 246, 0.9);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 200px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0% { opacity: 0.8; }
    50% { opacity: 1; }
    100% { opacity: 0.8; }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* أزرار التحكم في الفيديو */
.video-controls {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}

.video-control-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    background: rgba(59, 130, 246, 0.9);
    color: var(--white);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.video-control-btn:hover {
    background: rgba(59, 130, 246, 1);
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.video-control-btn:active {
    transform: scale(0.95);
}

/* تحسينات للأجهزة المحمولة */
@media (max-width: 768px) {
    .video-background-container {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        /* إصلاحات السيرفر - منع الفيديو من تغطية الشاشة */
        max-width: 100%;
        max-height: 50vh;
        overflow: hidden;
    }
    
    .video-overlay {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        background: linear-gradient(
            135deg,
            rgba(59, 130, 246, 0.2) 0%,
            rgba(30, 64, 175, 0.15) 25%,
            rgba(6, 182, 212, 0.12) 50%,
            rgba(16, 185, 129, 0.15) 75%,
            rgba(59, 130, 246, 0.2) 100%
        );
    }
    
    .login-side-panel .side-content {
        margin: var(--spacing-md);
        padding: var(--spacing-xl);
        background: rgba(255, 255, 255, 0.12);
    }
    
    .video-controls {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .video-control-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .video-controls {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .video-control-btn {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    .login-side-panel .side-content {
        margin: var(--spacing-sm);
        padding: var(--spacing-lg);
    }
}

/* تحسينات الأداء للأجهزة المحمولة */
@media (max-width: 768px) {
    .video-overlay {
        backdrop-filter: blur(1px);
    }
    
    /* تحسين أداء الفيديو على الجوال للسرعة القصوى */
    #youtube-background {
        width: 105%;
        height: 105%;
        min-width: 105%;
        min-height: 105%;
        transform: translate(-50%, -50%) scale(1.02);
        /* تحسينات قصوى للسرعة على الجوال */
        image-rendering: optimizeSpeed;
        image-rendering: pixelated;
        image-rendering: crisp-edges;
        /* تقليل العمليات المعقدة */
        filter: none;
        backdrop-filter: none;
        will-change: auto;
    }
    
    .loading-spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
    
    .loading-text {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* إصلاحات إضافية للسيرفر - منع الفيديو من تغطية الشاشة */
@media (max-width: 1200px) {
    .login-side-panel {
        max-width: 45%;
    }
    
    .video-background-container {
        max-width: 100%;
        max-height: 100%;
    }
    
    #youtube-background {
        max-width: 110%;
        max-height: 110%;
    }
}

/* إخفاء اللوحة الجانبية في الشاشات الصغيرة */
@media (max-width: 768px) {
    .login-side-panel {
        display: none !important;
    }
    
    .login-container {
        flex-direction: column;
    }
    
    .login-main-panel {
        width: 100%;
        flex: 1;
    }
}

/* إصلاحات إضافية للشاشات الكبيرة */
@media (min-width: 1920px) {
    .login-side-panel {
        max-width: 40%;
    }
    
    .video-background-container {
        max-width: 100%;
        max-height: 100%;
    }
}

/* Dark Mode Support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here if needed */
}