/* * Основные стили проекта ЧистоТекст
 * Написано на чистом CSS без использования фреймворков
 */

:root {
    /* Цветовая палитра (аналог Tailwind) */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-700: #15803d;
    
    --emerald-50: #ecfdf5;
    --emerald-600: #059669;
    --emerald-700: #047857;

    --red-50: #fef2f2;
    --red-100: #fee2e2;
    --red-600: #dc2626;

    --amber-50: #fffbeb;
    --amber-600: #d97706;

    --blue-50: #eff6ff;
    --blue-600: #2563eb;

    --purple-50: #faf5ff;
    --purple-600: #9333ea;

    --pink-50: #fdf2f8;
    --pink-600: #db2777;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(to bottom, var(--slate-50), #ffffff);
    color: var(--slate-800);
    min-height: 100vh;
    line-height: 1.5;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

button {
    font-family: inherit;
}

/* Утилиты */
.hidden {
    display: none !important;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-green { color: var(--green-600); }
.text-slate-600 { color: var(--slate-600); }

/* Контейнеры */
.container {
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 16px;
}

.container-sm {
    max-width: 896px;
    margin: 0 auto;
}

.container-xs {
    max-width: 768px;
    margin: 0 auto;
}

/* Навигация */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--slate-100);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 32px;
    width: auto;
}

.logo-text {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--slate-800);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 0.875rem;
    color: var(--slate-600);
}

.nav-links a:hover {
    color: var(--green-600);
}

/* Hero Section */
.hero {
    padding-top: 128px;
    padding-bottom: 80px;
    padding-left: 16px;
    padding-right: 16px;
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 16px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--green-600);
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--slate-600);
    margin-bottom: 40px;
}

/* Главный блок ввода */
.main-card {
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--slate-200);
    padding: 32px;
}

.input-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-700);
    margin-bottom: 8px;
}

.input-textarea {
    width: 100%;
    min-height: 120px;
    font-size: 1.125rem;
    resize: none;
    border: 1px solid var(--slate-200);
    border-radius: 6px;
    padding: 12px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    margin-bottom: 16px;
}

.input-textarea:focus {
    border-color: var(--green-500);
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

.error-message {
    padding: 12px;
    background-color: var(--red-50);
    border: 1px solid var(--red-100);
    border-radius: 8px;
    color: var(--red-600);
    font-size: 0.875rem;
    margin-bottom: 16px;
}

/* Кнопки */
.btn-group {
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1.125rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-primary {
    flex: 1;
    background: linear-gradient(to right, var(--green-600), var(--emerald-600));
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(to right, var(--green-700), var(--emerald-700));
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    padding: 0 24px;
    background-color: #ffffff;
    border: 1px solid var(--slate-200);
    color: var(--slate-700);
}

.btn-secondary:hover {
    background-color: var(--slate-50);
}

/* Анимация загрузки */
.animate-spin {
    animation: spin 1s linear infinite;
}
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Блок результатов */
.result-area {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--slate-200);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.result-header-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-700);
}

.btn-copy {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--slate-600);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.2s;
}

.btn-copy:hover {
    color: var(--green-600);
}

.result-box {
    padding: 16px;
    background: linear-gradient(to right, var(--green-50), var(--emerald-50));
    border-radius: 12px;
    border: 1px solid var(--green-100);
    margin-bottom: 24px;
}

.result-text {
    font-size: 1.125rem;
    color: var(--slate-800);
    white-space: pre-wrap;
    line-height: 1.6;
}

/* Исправления */
.corrections-section {
    border-top: 1px solid var(--slate-200);
    padding-top: 24px;
}

.corrections-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.corrections-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--slate-800);
}

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

.btn-action-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-accept-all { background-color: var(--green-50); color: var(--green-600); }
.btn-accept-all:hover { background-color: var(--green-100); }
.btn-reject-all { background-color: var(--red-50); color: var(--red-600); }
.btn-reject-all:hover { background-color: var(--red-100); }

.corrections-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.correction-item {
    padding: 12px;
    background-color: #ffffff;
    border-radius: 8px;
    border: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.correction-item.rejected {
    opacity: 0.5;
}

/* Правила: бейджи */
.rule-badge {
    flex-shrink: 0;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 4px;
}

.rule-red { background-color: var(--red-50); color: var(--red-600); }
.rule-amber { background-color: var(--amber-50); color: var(--amber-600); }
.rule-blue { background-color: var(--blue-50); color: var(--blue-600); }
.rule-purple { background-color: var(--purple-50); color: var(--purple-600); }
.rule-pink { background-color: var(--pink-50); color: var(--pink-600); }
.rule-slate { background-color: var(--slate-50); color: var(--slate-600); }

/* До / После текст */
.correction-content {
    flex: 1;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.before-text {
    display: inline-block;
    background: var(--red-50);
    padding: 2px 8px;
    border-radius: 4px;
    text-decoration: line-through;
    color: var(--red-600);
    font-weight: 500;
}

.after-text {
    display: inline-block;
    background: var(--green-50);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--green-600);
    font-weight: 500;
}

.correction-arrow {
    display: inline-flex;
    align-items: center;
    margin: 0 6px;
    color: var(--slate-500);
}

.correction-desc {
    font-size: 0.75rem;
    color: var(--slate-500);
    margin-left: 8px;
}

/* Переключение стилей при отмене (rejected) */
.correction-item.rejected .before-text {
    text-decoration: none;
    background: var(--green-50);
    color: var(--green-600);
}

.correction-item.rejected .after-text {
    text-decoration: line-through;
    background: var(--red-50);
    color: var(--red-600);
}

/* Кнопка принять/отменить в списке */
.btn-toggle {
    flex-shrink: 0;
    padding: 4px 12px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: 0.2s;
}

.btn-toggle.accepted { background-color: var(--red-50); color: var(--red-600); }
.btn-toggle.accepted:hover { background-color: var(--red-100); }
.btn-toggle.rejected { background-color: var(--green-50); color: var(--green-600); }
.btn-toggle.rejected:hover { background-color: var(--green-100); }

.empty-message {
    text-align: center;
    color: var(--slate-500);
    padding: 16px 0;
}

/* Секция "Как это работает" */
.section-light {
    background-color: var(--slate-50);
    padding: 80px 16px;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 16px;
    text-align: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 64px;
}

.step-card {
    background-color: #ffffff;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--slate-100);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--green-600);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 16px;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--slate-800);
    margin-bottom: 12px;
}

/* Секция PRO (Текстовая статья) */
.pro-section {
    padding: 80px 16px;
    background: linear-gradient(to bottom, var(--slate-50), #ffffff);
}

.prose-content {
    color: var(--slate-700);
    font-size: 1.125rem;
    line-height: 1.75;
}

.prose-content p {
    margin-bottom: 24px;
}

.prose-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--slate-800);
    margin-bottom: 16px;
    margin-top: 40px;
}

.prose-content strong {
    font-weight: 600;
}

/* FAQ секция */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 48px;
}

.faq-item {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--slate-100);
    cursor: pointer;
}

.faq-item summary {
    font-weight: 600;
    color: var(--slate-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    outline: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-icon {
    color: var(--green-600);
    transition: transform 0.2s;
}

.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    margin-top: 16px;
    color: var(--slate-600);
    line-height: 1.6;
}

/* Подвал */
.footer {
    background-color: var(--slate-900);
    color: var(--slate-400);
    padding: 48px 16px;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
}

.footer-logo-text {
    font-weight: 600;
    font-size: 1.125rem;
    color: #ffffff;
}

.footer-desc {
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.footer-copy {
    font-size: 0.75rem;
}

/* Адаптив (Медиазапросы) */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .main-card {
        padding: 24px 16px;
    }
}