/**
 * Authentication Pages Styles
 * topot.im - Modern gradient theme
 */

:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a3e;
    --bg-tertiary: #252550;
    --bg-hover: #2d2d66;
    --bg-input: #1f1f45;
    
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0c0;
    --text-muted: #707090;
    
    --accent-primary: #6366f1;
    --accent-hover: #818cf8;
    --accent-active: #4f46e5;
    
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --accent-gradient-hover: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #f472b6 100%);
    
    --border-color: #2d2d66;
    --border-light: #1f1f45;
    
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --transition: all 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-box {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border-color);
    border: 1px solid var(--border-color);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.auth-logo svg {
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.3));
}

.auth-header h1 {
    font-size: 28px;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.auth-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0;
}

.tab-btn {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    margin-bottom: -2px;
    position: relative;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px 2px 0 0;
}

.auth-form {
    display: block;
}

.auth-form.hidden {
    display: none;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group small {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--accent-gradient-hover);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-block {
    width: 100%;
}

/* Улучшения для формы регистрации */
.auth-form .form-group:has(input[type="tel"]) {
    margin-top: var(--spacing-sm);
}

/* Анимация появления формы */
.auth-form {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Улучшенный фокус для полей ввода */
.form-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

/* Стили для grid в форме регистрации */
.auth-form > div[style*="grid"] {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

@media (max-width: 480px) {
    .auth-form > div[style*="grid"] {
        grid-template-columns: 1fr;
    }
}