/* ========================================
   RB Realty Premium Design System
   Легкий, современный, единый стиль
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
    /* Основные цвета */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #eef2ff;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Нейтральные */
    --dark: #0f172a;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;
    
    /* Тени */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-primary: 0 20px 25px -5px rgba(99, 102, 241, 0.2);
    
    /* Скругления */
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-3xl: 32px;
    --radius-full: 9999px;
    
    /* Анимации */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.5;
    /* Фон задаётся в theme.css (тенант) или index.html (core) */
}

/* Кастомный скролл */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Контейнер */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Хедер страниц */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-3xl);
    padding: 28px 32px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.page-header::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.header-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.page-header p {
    font-size: 15px;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto;
}

.back-btn {
    position: absolute;
    left: 28px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
    z-index: 3;
}

.back-btn:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-50%) translateX(-4px);
}

/* Навигация */
.nav-bar {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 12px 20px;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
}

.nav-link {
    padding: 10px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

/* Карточки */
.card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-200);
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border: none;
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: var(--white);
}

/* Секции */
.section {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-100);
}

.section-header .emoji {
    font-size: 24px;
}

.section-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.01em;
}

/* Сетки */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

/* Формы */
.input-group {
    margin-bottom: 20px;
}

.input-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.input-field {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    background: var(--white);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Уведомления */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 14px 20px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1100;
    transform: translateX(120%);
    transition: transform var(--transition);
    border-left: 4px solid var(--primary);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left-color: var(--success);
}

.notification.error {
    border-left-color: var(--danger);
}

/* PWA баннер */
.install-banner {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    background: rgba(15, 23, 42, 0.95);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.2);
}

.install-banner:hover {
    transform: translateX(-50%) translateY(-2px);
}

.install-banner .close {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 18px;
    padding: 4px 8px;
}

/* Адаптация */
@media (max-width: 768px) {
    .app-container {
        padding: 16px;
    }
    
    .page-header {
        padding: 24px 20px;
    }
    
    .page-header h1 {
        font-size: 22px;
    }
    
    .back-btn {
        left: 20px;
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .section {
        padding: 20px;
    }
    
    .section-header h2 {
        font-size: 18px;
    }
    
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .nav-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-link {
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 12px;
    }
    
    .page-header h1 {
        font-size: 20px;
    }
}

/* Анимации */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.4s ease-out forwards;
}