/* Подключение современного шрифта Outfit из Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #06b6d4;
    --secondary-hover: #0891b2;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 12px;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

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

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-hover);
}

/* Контейнеры */
.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.auth-container {
    width: 100%;
    max-width: 450px;
    margin: auto;
}

/* Карточки и стеклянные панели */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.6);
}

/* Заголовки */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.2rem;
    background: linear-gradient(135deg, #fff 30%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    margin-bottom: 30px;
}

.survey-title {
    font-size: 1.8rem;
    color: #fff;
}

.section-title {
    font-size: 1.4rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Элементы форм */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.required-star {
    color: var(--danger);
    margin-left: 4px;
}

.form-control {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    background: rgba(15, 23, 42, 0.8);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Варианты выбора (чекбоксы и радио) */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.option-item {
    display: flex !important;
    align-items: flex-start;
    cursor: pointer;
    position: relative;
    user-select: none;
    margin-bottom: 0 !important;
}

.option-item input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    height: 20px;
    width: 20px;
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-right: 12px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.option-item:hover input ~ .checkmark {
    border-color: var(--primary);
}

.option-item input:checked ~ .checkmark {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkmark::after {
    content: "";
    display: none;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(-1px, -1px);
}

.option-item input:checked ~ .checkmark::after {
    display: block;
}

/* Радио кнопки (круглые) */
.checkmark.radio {
    border-radius: 50%;
}

.checkmark.radio::after {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
    border: none;
    transform: none;
}

.option-text {
    font-size: 0.95rem;
    color: var(--text-main);
    padding-top: 1px;
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: #fff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
    color: #fff;
}

.btn-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #a7f3d0;
}

.btn-success:hover {
    background: rgba(16, 185, 129, 0.3);
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
    border-radius: 6px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Таблицы */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin-top: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

th, td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(15, 23, 42, 0.4);
    color: var(--text-muted);
    font-weight: 500;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Сообщения и предупреждения */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Навигация и хедер */
.header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    width: 100%;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Конструктор вопросов */
.question-builder-card {
    background: rgba(15, 23, 42, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    position: relative;
    transition: var(--transition);
}

.question-builder-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.question-number {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--secondary);
}

.question-actions {
    display: flex;
    gap: 8px;
}

/* Сетка для фильтров */
.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

/* Стилизация бейджей (статусов) */
.badge {
    display: inline-block;
    padding: 3px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-active {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-inactive {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Пустые состояния */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.1);
}

/* Адаптивность */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .glass-panel {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .header-nav {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
}