:root {
    --primary-color: #8854d0;
    --primary-dark: #6f42c1;
    --primary-light: #a66efa;
    --secondary-color: #5a36a0;
    --dark-bg: #121212;
    --dark-card: #1e1e1e;
    --dark-input: #2d2d2d;
    --light-bg: #f8f9fa;
    --light-card: #ffffff;
    --light-input: #f1f3f5;
    --text-dark: #212529;
    --text-light: #e9ecef;
    --text-muted-dark: #6c757d;
    --text-muted-light: #adb5bd;
    --border-dark: #343a40;
    --border-light: #dee2e6;
    --danger: #dc3545;
    --success: #28a745;
    --warning: #ffc107;
    --info: #17a2b8;
    --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-light: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --glow-color: rgba(138, 84, 208, 0.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-dark);
    background-color: var(--light-bg);
    min-height: 100vh;
    overflow-x: hidden;
    transition: var(--transition);
    position: relative;
}

body.dark-mode {
    color: var(--text-light);
    background-color: var(--dark-bg);
}

body.theme-transition {
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* خلفية متحركة */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg, #121212, #2d1a4a);
    overflow: hidden;
}

.code-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(138, 84, 208, 0.2) 2%, transparent 10%),
        radial-gradient(circle at 75% 75%, rgba(138, 84, 208, 0.2) 2%, transparent 10%),
        radial-gradient(circle at 50% 50%, rgba(138, 84, 208, 0.3) 2%, transparent 10%);
    background-size: 100px 100px, 120px 120px, 170px 170px;
    animation: particleAnimation 15s infinite linear;
}

@keyframes particleAnimation {
    0% {
        background-position: 0 0, 0 0, 0 0;
    }
    100% {
        background-position: 100px 100px, -120px 120px, 170px -170px;
    }
}

/* تأثير الضباب */
.blur-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: -1;
    background: radial-gradient(circle at center, rgba(138, 84, 208, 0.1), rgba(0, 0, 0, 0.7));
}

.login-container {
    min-height: 100vh;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* بطاقة تسجيل الدخول */
.login-card {
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-dark);
    position: relative;
    z-index: 1;
    padding: 2.5rem;
    border: 1px solid rgba(138, 84, 208, 0.2);
}

body:not(.dark-mode) .login-card {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-light);
}

/* رأس البطاقة */
.login-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    position: relative;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
    filter: drop-shadow(0 0 10px var(--glow-color));
}

.header-controls {
    display: flex;
    align-items: center;
}

/* مبدل اللغة */
.language-switcher {
    display: flex;
    align-items: center;
    background: rgba(45, 45, 45, 0.5);
    border-radius: 30px;
    padding: 5px 10px;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

body:not(.dark-mode) .language-switcher {
    background: rgba(240, 240, 240, 0.8);
}

.lang-btn {
    background: none;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-muted-light);
    transition: var(--transition);
    border-radius: 20px;
}

body:not(.dark-mode) .lang-btn {
    color: var(--text-muted-dark);
}

.lang-btn.active {
    color: white;
    background: var(--primary-color);
    box-shadow: 0 2px 10px rgba(138, 84, 208, 0.5);
}

body:not(.dark-mode) .lang-btn.active {
    color: white;
}

.separator {
    color: var(--text-muted-light);
    margin: 0 2px;
}

body:not(.dark-mode) .separator {
    color: var(--text-muted-dark);
}

/* مبدل الثيم */
.theme-toggle {
    background: rgba(45, 45, 45, 0.5);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    margin-right: 10px;
}

body:not(.dark-mode) .theme-toggle {
    background: rgba(240, 240, 240, 0.8);
    color: var(--text-dark);
}

.theme-toggle:hover {
    transform: rotate(15deg);
    background: var(--primary-color);
    color: white;
    box-shadow: 0 0 15px var(--glow-color);
}

.theme-toggle i {
    font-size: 1.1rem;
}

.theme-toggle .fa-sun {
    display: none;
}

.theme-toggle .fa-moon {
    display: block;
}

body.dark-mode .theme-toggle .fa-sun {
    display: block;
}

body.dark-mode .theme-toggle .fa-moon {
    display: none;
}

/* محتوى البطاقة */
.login-content {
    position: relative;
}

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

.welcome-text h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, var(--primary-light), var(--primary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 5px 15px rgba(138, 84, 208, 0.3);
}

.welcome-text p {
    font-size: 1rem;
    color: var(--text-muted-light);
    max-width: 80%;
    margin: 0 auto;
}

body:not(.dark-mode) .welcome-text p {
    color: var(--text-muted-dark);
}

/* حاوية المصادقة */
.auth-container {
    position: relative;
}

/* تبويبات المصادقة */
.auth-tabs {
    display: flex;
    margin-bottom: 2rem;
    border-bottom: 2px solid rgba(138, 84, 208, 0.2);
    justify-content: center;
}

.auth-tab {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted-light);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

body:not(.dark-mode) .auth-tab {
    color: var(--text-muted-dark);
}

.auth-tab.active {
    color: var(--primary-color);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-light), var(--primary-color));
    box-shadow: 0 0 10px var(--glow-color);
}

/* نماذج المصادقة */
.auth-form {
    display: none;
    animation: fadeIn 0.5s ease;
}

.auth-form.active {
    display: block;
}

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

.auth-form-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.auth-form-header p {
    color: var(--text-muted-light);
    font-size: 0.95rem;
}

body:not(.dark-mode) .auth-form-header p {
    color: var(--text-muted-dark);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
}

body:not(.dark-mode) label {
    color: var(--text-dark);
}

.input-wrapper {
    position: relative;
    transition: var(--transition);
}

.input-wrapper:focus-within {
    transform: translateY(-2px);
}
.form-control:focus {
    color: var(--primary-color) !important;
}
.input-wrapper i {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    transition: var(--transition);
    z-index: 1;
}

html[dir="rtl"] .input-wrapper i {
    right: 15px;
}

html[dir="ltr"] .input-wrapper i {
    left: 15px;
}

.form-control {
    width: 100%;
    padding: 0.9rem 1rem;
    padding-right: 2.5rem;
    border: 1px solid rgba(138, 84, 208, 0.3);
    border-radius: 10px;
    background-color: rgba(45, 45, 45, 0.5);
    color: var(--text-light);
    font-family: 'Cairo', sans-serif;
    transition: var(--transition);
    backdrop-filter: blur(0.5px);
    -webkit-backdrop-filter: blur(5px);
}

body:not(.dark-mode) .form-control {
    background-color: rgba(240, 240, 240, 0.5);
    color: var(--text-dark);
}

html[dir="rtl"] .form-control {
    padding-right: 2.5rem;
    padding-left: 1rem;
}

html[dir="ltr"] .form-control {
    padding-left: 2.5rem;
    padding-right: 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(138, 84, 208, 0.3), 0 0 15px var(--glow-color);
    background-color: rgba(45, 45, 45, 0.7);
}

body:not(.dark-mode) .form-control:focus {
    background-color: rgba(255, 255, 255, 0.9);
}

.toggle-password {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

html[dir="rtl"] .toggle-password {
    left: 15px;
}

html[dir="ltr"] .toggle-password {
    right: 15px;
}

.toggle-password:hover {
    color: var(--primary-light);
}

.password-label-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.forgot-password {
    font-size: 0.9rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
}

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

/* قوة كلمة المرور */
.password-strength {
    margin-top: 0.7rem;
}

.progress {
    height: 5px;
    background-color: rgba(45, 45, 45, 0.5);
    border-radius: 999px;
    overflow: hidden;
}

body:not(.dark-mode) .progress {
    background-color: rgba(200, 200, 200, 0.5);
}

.password-feedback {
    font-size: 0.8rem;
    color: var(--text-muted-light);
    margin-top: 0.2rem;
    display: block;
}

body:not(.dark-mode) .password-feedback {
    color: var(--text-muted-dark);
}

/* مربع اختيار مخصص */
.custom-checkbox {
    display: flex;
    align-items: center;
}

.custom-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.custom-checkbox label {
    position: relative;
    margin: 0;
    padding-right: 28px;
    padding-left: 0;
    cursor: pointer;
    font-weight: normal;
    line-height: 20px;
    display: inline-block;
    color: var(--text-muted-light);
}

body:not(.dark-mode) .custom-checkbox label {
    color: var(--text-muted-dark);
}

html[dir="ltr"] .custom-checkbox label {
    padding-left: 28px;
    padding-right: 0;
}

.custom-checkbox label::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(138, 84, 208, 0.3);
    border-radius: 4px;
    background-color: rgba(45, 45, 45, 0.5);
    transition: var(--transition);
}

body:not(.dark-mode) .custom-checkbox label::before {
    background-color: rgba(240, 240, 240, 0.8);
}

html[dir="ltr"] .custom-checkbox label::before {
    left: 0;
    right: auto;
}

.custom-checkbox input[type="checkbox"]:checked + label::before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 10px var(--glow-color);
}

.custom-checkbox label::after {
    content: '';
    position: absolute;
    display: none;
    top: 3px;
    right: 6px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

html[dir="ltr"] .custom-checkbox label::after {
    left: 6px;
    right: auto;
}

.custom-checkbox input[type="checkbox"]:checked + label::after {
    display: block;
}

.remember-me {
    margin-bottom: 1.5rem;
}

.terms-group {
    margin-top: 1rem;
}

.terms-link {
    color: var(--primary-color);
    text-decoration: none;
    margin-right: 5px;
    transition: var(--transition);
}

.terms-link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

html[dir="ltr"] .terms-link {
    margin-left: 5px;
    margin-right: 0;
}

/* زر المصادقة */
.auth-btn {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(138, 84, 208, 0.3);
}

.auth-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(138, 84, 208, 0.5);
}

.auth-btn:hover::before {
    left: 100%;
    transition: 0.7s;
}

.back-to-login {
    display: block;
    margin-top: 1rem;
    text-align: center;
    background: none;
    border: none;
    color: var(--text-muted-light);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition);
}

body:not(.dark-mode) .back-to-login {
    color: var(--text-muted-dark);
}

.back-to-login:hover {
    color: var(--primary-color);
}

/* فاصل المصادقة */
.auth-divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(138, 84, 208, 0.3), transparent);
    z-index: 1;
}

.auth-divider span {
    position: relative;
    z-index: 2;
    background-color: rgba(30, 30, 30, 0.8);
    padding: 0 1rem;
    font-size: 0.9rem;
    color: var(--text-muted-light);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

body:not(.dark-mode) .auth-divider span {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-muted-dark);
}

/* تسجيل الدخول الاجتماعي */
.social-login {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.social-btn {
    flex: 1;
    padding: 0.7rem;
    border: 1px solid rgba(138, 84, 208, 0.2);
    border-radius: 10px;
    background-color: rgba(45, 45, 45, 0.5);
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

body:not(.dark-mode) .social-btn {
    background-color: rgba(240, 240, 240, 0.5);
    color: var(--text-dark);
}

.social-btn i {
    margin-right: 0.5rem;
}

html[dir="ltr"] .social-btn i {
    margin-right: 0.5rem;
    margin-left: 0;
}

.social-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(138, 84, 208, 0.2);
}

.social-btn.google i {
    color: #DB4437;
}

.social-btn.facebook i {
    color: #4267B2;
}

/* تذييل البطاقة */
.login-footer {
    margin-top: 2rem;
    text-align: center;
}

.login-footer p {
    font-size: 0.9rem;
    color: var(--text-muted-light);
}

body:not(.dark-mode) .login-footer p {
    color: var(--text-muted-dark);
}

/* الإشعار */
.notification {
    position: fixed;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 0.9rem;
    box-shadow: 0 5px 20px rgba(138, 84, 208, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: bottom 0.3s ease, opacity 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.notification.active {
    bottom: 20px;
    opacity: 1;
}

/* تأثيرات إضافية */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(138, 84, 208, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(138, 84, 208, 0); }
    100% { box-shadow: 0 0 0 0 rgba(138, 84, 208, 0); }
}

/* استجابة */
@media (max-width: 767px) {
    .login-card {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .welcome-text h1 {
        font-size: 1.8rem;
    }
    
    .welcome-text p {
        max-width: 100%;
        font-size: 0.9rem;
    }
    
    .auth-tab {
        padding: 0.8rem 1rem;
        font-size: 1rem;
    }
    
    .form-control {
        padding: 0.8rem 2.5rem 0.8rem 1rem;
    }
    
    html[dir="ltr"] .form-control {
        padding: 0.8rem 1rem 0.8rem 2.5rem;
    }
    
    .social-login {
        flex-direction: column;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .login-card {
        padding: 2rem;
    }
    
    .welcome-text h1 {
        font-size: 2rem;
    }
}