/* assets/css/style.css — АНО «Расширение» */

/* ===== ПЕРЕМЕННЫЕ ===== */
:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-accent: #F59E0B;
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --color-bg: #F8FAFC;
    --color-white: #FFFFFF;
    --font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ===== БАЗОВЫЕ СТИЛИ ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    font-family: var(--font-family);
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* Доступность */
*:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }
.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--color-primary); color: #fff;
    padding: 8px 16px; z-index: 10000;
}
.skip-link:focus { top: 0; }

/* ===== КНОПКА ДОСТУПНОСТИ (фиксированная, всегда видна) ===== */
.a11y-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-primary);
    color: var(--color-primary);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.2s;
    padding: 0;
}
.a11y-toggle:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.05);
}
.a11y-toggle:focus-visible {
    outline: 4px solid var(--color-accent);
    outline-offset: 3px;
}

/* ===== ШАПКА ===== */
.header {
    background: var(--color-white);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1030;
}
.header .navbar { padding: 0.5rem 0; }
.header .navbar-brand { color: var(--color-text); font-weight: 700; }
.header .nav-link {
    color: var(--color-text);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
}
.header .nav-link:hover,
.header .nav-link:focus {
    color: var(--color-primary);
    background: rgba(37,99,235,0.08);
}
.header .navbar-toggler {
    border-color: var(--color-primary);
}

/* ===== HERO ===== */
.hero {
    background: linear-gradient(135deg, var(--color-bg), #fff);
    padding: 4rem 0;
}
.hero .badge {
    font-weight: 600;
    padding: 0.5rem 1rem;
}

/* ===== СЕКЦИИ ===== */
.section { padding: 4rem 0; }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 3rem; }
.section-header h2 { margin-bottom: 1rem; }
.section-header p { font-size: 1.1rem; color: var(--color-text-light); }

/* ===== КАРТОЧКИ ===== */
.card {
    border-radius: 0.75rem;
    transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px -8px rgba(0,0,0,0.12) !important;
}
.card-body { padding: 1.5rem; }
.card-title { font-weight: 700; margin-bottom: 0.75rem; }
.card-text { color: var(--color-text-light); }

/* ===== ФОРМА ===== */
.form-section { padding: 4rem 0; }
.form-section .form-control,
.form-section .form-select {
    border: 2px solid #E2E8F0;
    padding: 0.75rem 1rem;
    font-size: 1.05rem;
    border-radius: 0.5rem;
}
.form-section .form-control:focus,
.form-section .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-section .form-check-label a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ===== ФУТЕР ===== */
.footer {
    background: #0f172a;
    color: #fff;
    padding: 3rem 0 1.5rem;
}
.footer a { color: rgba(255,255,255,0.85); transition: color 0.2s; }
.footer a:hover { color: #fff !important; text-decoration: underline; }

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem !important; }
    .hero .lead { font-size: 1.1rem !important; }
    .btn-lg { padding: 0.75rem 1.5rem !important; font-size: 1.1rem !important; }
    .a11y-toggle {
        top: 15px;
        right: 15px;
        width: 44px;
        height: 44px;
        font-size: 1.3rem;
    }
}

/* ===== ПЕЧАТЬ ===== */
@media print {
    .header, .footer, .a11y-toggle, #registration, .no-print { display: none !important; }
    body { background: #fff; color: #000; font-size: 12pt; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
}

/* ===== ВЕРСИЯ ДЛЯ СЛАБОВИДЯЩИХ (ГОСТ Р 52872-2019) ===== */
[data-theme="a11y"] {
    --a11y-bg: #000000 !important;
    --a11y-text: #FFFFFF !important;
    --a11y-link: #FFFF00 !important;
    --a11y-border: #FFFFFF !important;
}

[data-theme="a11y"] html, [data-theme="a11y"] body {
    background-color: var(--a11y-bg) !important;
    color: var(--a11y-text) !important;
    font-size: 1.4rem !important;
    line-height: 1.9 !important;
    letter-spacing: 0.02em !important;
    overflow-x: hidden !important;
}

/* Сброс фонов для всех секций, включая hero */
[data-theme="a11y"] section, [data-theme="a11y"] .section,
[data-theme="a11y"] .hero, [data-theme="a11y"] .card,
[data-theme="a11y"] .bg-light, [data-theme="a11y"] .bg-white,
[data-theme="a11y"] .bg-dark, [data-theme="a11y"] .bg-primary,
[data-theme="a11y"] .bg-warning, [data-theme="a11y"] .alert,
[data-theme="a11y"] .navbar, [data-theme="a11y"] .navbar-collapse,
[data-theme="a11y"] .footer, [data-theme="a11y"] .ratio,
[data-theme="a11y"] .form-wrapper {
    background-color: var(--a11y-bg) !important;
    background-image: none !important;
}

/* === ТОЧЕЧНЫЕ ПРАВКИ ДЛЯ HERO В A11Y === */
[data-theme="a11y"] .hero {
    background: #000000 !important;
    padding: 4rem 0 !important;
}
[data-theme="a11y"] .hero h1,
[data-theme="a11y"] .hero .lead,
[data-theme="a11y"] .hero p,
[data-theme="a11y"] .hero span,
[data-theme="a11y"] .hero .small {
    color: var(--a11y-text) !important;
}
[data-theme="a11y"] .hero .badge {
    background-color: #222222 !important;
    color: var(--a11y-link) !important;
    border: 2px solid var(--a11y-border) !important;
}
[data-theme="a11y"] .hero .text-muted {
    color: var(--a11y-text) !important;
}

/* Сброс текста */
[data-theme="a11y"] h1, [data-theme="a11y"] h2, [data-theme="a11y"] h3,
[data-theme="a11y"] h4, [data-theme="a11y"] h5, [data-theme="a11y"] h6,
[data-theme="a11y"] p, [data-theme="a11y"] span, [data-theme="a11y"] div,
[data-theme="a11y"] li, [data-theme="a11y"] label, [data-theme="a11y"] small,
[data-theme="a11y"] strong, [data-theme="a11y"] .text-muted,
[data-theme="a11y"] .text-secondary, [data-theme="a11y"] .text-dark,
[data-theme="a11y"] .text-primary, [data-theme="a11y"] .text-white,
[data-theme="a11y"] .card-text, [data-theme="a11y"] .card-title,
[data-theme="a11y"] .form-label, [data-theme="a11y"] .nav-link,
[data-theme="a11y"] .navbar-brand, [data-theme="a11y"] .footer a,
[data-theme="a11y"] .section-header p {
    color: var(--a11y-text) !important;
}

/* Ссылки */
[data-theme="a11y"] a, [data-theme="a11y"] a:hover, [data-theme="a11y"] a:focus,
[data-theme="a11y"] .nav-link, [data-theme="a11y"] .footer a,
[data-theme="a11y"] .form-check-label a {
    color: var(--a11y-link) !important;
    text-decoration: underline !important;
    font-weight: 700 !important;
}

/* Кнопки */
[data-theme="a11y"] .btn, [data-theme="a11y"] .btn:hover, [data-theme="a11y"] .btn:focus,
[data-theme="a11y"] .btn-primary, [data-theme="a11y"] .btn-outline-primary,
[data-theme="a11y"] .btn-warning {
    background-color: var(--a11y-link) !important;
    color: #000000 !important;
    border: 3px solid var(--a11y-border) !important;
    font-weight: 700 !important;
}

/* Формы */
[data-theme="a11y"] .form-control, [data-theme="a11y"] .form-select {
    background-color: #1a1a1a !important;
    color: var(--a11y-text) !important;
    border: 3px solid var(--a11y-border) !important;
    font-size: 1.4rem !important;
}
[data-theme="a11y"] .form-control::placeholder { color: #cccccc !important; }

/* Бейджи и алерты */
[data-theme="a11y"] .badge, [data-theme="a11y"] .alert {
    background-color: #222222 !important;
    color: var(--a11y-link) !important;
    border: 2px solid var(--a11y-border) !important;
}

/* Шапка */
[data-theme="a11y"] .header, [data-theme="a11y"] .navbar, [data-theme="a11y"] .navbar-collapse {
    background-color: var(--a11y-bg) !important;
    border-bottom: 3px solid var(--a11y-border) !important;
}
[data-theme="a11y"] .navbar-toggler { border: 3px solid var(--a11y-border) !important; }
[data-theme="a11y"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23FFFFFF' stroke-linecap='round' stroke-width='3' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* Кнопка доступности */
[data-theme="a11y"] .a11y-toggle {
    background-color: var(--a11y-link) !important;
    color: #000000 !important;
    border: 3px solid var(--a11y-border) !important;
}

/* Изображения */
[data-theme="a11y"] img, [data-theme="a11y"] .hero-image, [data-theme="a11y"] .ratio > * {
    filter: contrast(1.5) brightness(1.2) !important;
    max-width: 100% !important;
}

/* Контейнеры */
[data-theme="a11y"] .container, [data-theme="a11y"] .container-fluid {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
    max-width: 100% !important;
}

/* Фокус */
[data-theme="a11y"] *:focus-visible {
    outline: 4px solid var(--a11y-link) !important;
    outline-offset: 4px !important;
}