:root {
    --primary-color: #22c55e;
    --primary-hover: #16a34a;
    --primary-light: #4ade80;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --accent-color: #10b981;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --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-colored: 0 10px 15px -3px rgba(34, 197, 94, 0.12), 0 4px 6px -2px rgba(34, 197, 94, 0.08);
    --gradient-primary: linear-gradient(135deg, #4ade80 0%, #22c55e 50%, #16a34a 100%);
    --gradient-secondary: linear-gradient(135deg, #86efac 0%, #22c55e 100%);
    --gradient-success: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    --gradient-islamic: linear-gradient(135deg, #4ade80 0%, #22c55e 50%, #16a34a 100%);
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    min-height: 100vh;
}

/* Header Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border-light);
    padding: 0 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transition: all var(--transition-normal);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-brand img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    margin-right: 12px;
}

.navbar-brand-text {
    background: var(--gradient-islamic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.navbar-brand-text::after {
    content: '☪';
    position: absolute;
    right: -25px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--gradient-islamic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1rem;
    opacity: 0.7;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.2s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.875rem;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-colored);
}

.btn-primary:active {
    transform: translateY(-1px);
    transition: all 0.1s ease;
}

.btn-primary::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: left var(--transition-slow);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 140px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Form Styles */
.auth-container {
    max-width: 420px;
    margin: 3rem auto;
    background: var(--bg-card);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-islamic);
}

.auth-container h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

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

.auth-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input,
input[type="text"],
input[type="password"],
input[type="tel"],
input[type="email"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--bg-primary);
    box-sizing: border-box;
}

.form-input:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="email"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-input:invalid {
    border-color: var(--danger-color);
}

.input-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.password-toggle:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
    z-index: 1;
}

.divider::after {
    content: 'или';
    background: var(--bg-card);
    padding: 0 1rem;
    position: relative;
    z-index: 2;
}

.social-login {
    margin-bottom: 1.5rem;
}

.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    gap: 0.5rem;
}

.btn-google:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-google img {
    width: 20px;
    height: 20px;
}

.errorlist {
    color: var(--danger-color);
    list-style: none;
    margin: 0.5rem 0 0 0;
    padding: 0;
    font-size: 0.875rem;
}

.errorlist li {
    margin-bottom: 0.25rem;
}

.auth-container p {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 2rem;
}

.auth-container p a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.auth-container p a:hover {
    text-decoration: underline;
}

/* Центрирование кнопки регистрации */
.button-center {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.button-center .btn {
    width: auto;
    min-width: 200px;
    padding: 0.875rem 2rem;
}

/* UX компонент для существующих пользователей */
.existing-user-options {
    margin: 2rem 0;
}

.info-message {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
    border: 1px solid #4ade80;
    border-radius: var(--border-radius-lg);
    margin-bottom: 2rem;
}

.info-icon {
    flex-shrink: 0;
}

.info-content h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.info-content p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.5;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-large {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: var(--bg-card);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.alternative-option {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.alternative-option p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.link-primary {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link-primary:hover {
    text-decoration: underline;
}

/* Адаптивность */
@media (min-width: 768px) {
    .action-buttons {
        flex-direction: row;
    }
    
    .btn-large {
        flex: 1;
    }
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 1rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

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

/* Enhanced Responsive Design */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 1.5rem;
    }
}

@media (max-width: 992px) {
    .main-content {
        padding: 1rem 0;
    }
    
    .auth-container {
        max-width: 500px;
        margin: 2rem auto;
    }
}

@media (max-width: 768px) {
    .navbar-nav {
        gap: 1rem;
        backdrop-filter: blur(20px);
        border-radius: 0 0 1rem 1rem;
    }
    
    .auth-container {
        margin: 1rem auto;
        padding: 1.5rem;
        border-radius: var(--border-radius-lg);
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .form-input {
        padding: 0.875rem 1rem;
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 0.5rem;
    }
    
    .auth-container {
        margin: 0.5rem;
        padding: 1.25rem;
    }
    
    .auth-header h2 {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
        min-height: 44px; /* Touch target size */
    }
    
    .form-input {
        min-height: 44px;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
        padding: 0.5rem;
        border-radius: var(--border-radius-md);
        transition: all var(--transition-normal);
    }
    
    .mobile-menu-toggle:hover {
        background: rgba(37, 99, 235, 0.1);
        transform: scale(1.1);
    }
    
    .navbar-nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        border: 1px solid var(--border-light);
        border-top: none;
        padding: 1.5rem;
        flex-direction: column;
        align-items: stretch;
        box-shadow: var(--shadow-xl);
        z-index: 999;
        animation: slideInMobile 0.3s ease;
    }
    
    .navbar-nav.active {
        display: flex;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        border-radius: var(--border-radius-md);
        margin-bottom: 0.5rem;
        text-align: center;
        transition: all var(--transition-normal);
    }
    
    .nav-link:hover {
        background: rgba(37, 99, 235, 0.1);
        transform: translateX(5px);
    }
}

@keyframes slideInMobile {
    0% {
        transform: translateY(-10px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}



/* Success button style */
.btn-success {
    background: var(--success-color) !important;
    color: white !important;
    border: 1px solid var(--success-color) !important;
}

.btn-success:hover {
    background: #047857 !important;
    border-color: #047857 !important;
    transform: translateY(-1px);
}