/* =========================================================
   Лаборатория ВТ — дизайн-система (design tokens + базовые компоненты)
   Меняя переменные в :root, вы меняете оформление всего сайта.
   ========================================================= */

:root {
    /* Цвета */
    --color-primary:        #2b7de9;
    --color-primary-600:    #1f66c4;
    --color-primary-50:     #eaf2fd;

    --color-ink:            #1f2a37;   /* заголовки, тёмный фон подвала */
    --color-body:           #374151;   /* основной текст */
    --color-muted:          #6b7280;   /* второстепенный текст */

    --color-bg:             #f5f7fa;   /* фон страницы */
    --color-surface:        #ffffff;   /* карточки, шапка */
    --color-border:         #e5e7eb;

    --color-success:        #2e9e5b;
    --color-danger:         #e5484d;

    /* Акценты направлений */
    --accent-repair:        #e74c3c;
    --accent-automation:    #2b7de9;
    --accent-development:   #8b5cf6;
    --accent-muted:         #95a5a6;

    /* Типографика */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;

    --fs-h1: clamp(2rem, 4vw, 2.75rem);
    --fs-h2: clamp(1.5rem, 3vw, 2rem);
    --fs-h3: 1.25rem;
    --fs-body: 1rem;
    --fs-small: 0.875rem;
    --lh: 1.6;

    /* Сетка / отступы (шаг 4px) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;

    --container-max: 1200px;
    --container-pad: 5%;

    /* Скругления и тени */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.08);
    --shadow-md: 0 5px 15px rgba(16, 24, 40, 0.10);
    --shadow-lg: 0 12px 30px rgba(16, 24, 40, 0.15);

    --transition: 0.2s ease;
}

/* =========================================================
   Подсказки прокрутки (UX: показать, что страница листается)
   ========================================================= */
/* Индикатор прогресса прокрутки */
.scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px; width: 0;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-600));
    z-index: 200;
    transition: width 0.1s linear;
    pointer-events: none;
}

/* Подсказка «листайте вниз» */
.scroll-cue {
    display: inline-flex; align-items: center; gap: var(--space-2);
    font-family: var(--font-mono); font-size: var(--fs-small);
    color: var(--color-muted);
    margin-top: var(--space-8);
    transition: color var(--transition);
}
.scroll-cue:hover { color: var(--color-primary); }
.scroll-cue__chevron {
    display: inline-flex; align-items: center; justify-content: center;
    width: 30px; height: 30px; border-radius: 50%;
    border: 1px solid var(--color-border);
    animation: scroll-bob 1.6s ease-in-out infinite;
}
.scroll-cue:hover .scroll-cue__chevron { border-color: var(--color-primary); }
.scroll-cue__chevron svg { width: 16px; height: 16px; stroke: currentColor; }
@keyframes scroll-bob {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(4px); }
}

/* Появление секций при прокрутке (включается только при наличии JS) */
.js .reveal-on-scroll { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal-on-scroll.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .scroll-cue__chevron { animation: none; }
    .js .reveal-on-scroll { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   Боковая навигация по секциям (десктоп) — заполняет бок,
   показывает число секций и текущую позицию, кликабельна.
   ========================================================= */
.section-rail {
    position: fixed;
    left: max(14px, calc(50% - 700px));
    top: 50%;
    transform: translateY(-50%);
    z-index: 95;
    display: none;
    flex-direction: column;
    gap: var(--space-1);
}
@media (min-width: 1240px) {
    .section-rail { display: flex; }
}
.section-rail::before {
    content: '';
    position: absolute; left: 13px; top: 14px; bottom: 14px;
    width: 1px; background: var(--color-border); z-index: -1;
}
.rail-item {
    position: relative;
    display: flex; align-items: center; gap: var(--space-3);
    padding: 5px 0;
    color: var(--color-muted);
}
.rail-item__num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 26px; height: 26px; flex-shrink: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700;
    transition: all var(--transition);
}
.rail-item__label {
    white-space: nowrap;
    background: var(--color-ink); color: #fff;
    padding: 4px 9px; border-radius: var(--radius-sm);
    font-size: 0.72rem;
    opacity: 0; transform: translateX(-6px);
    transition: opacity var(--transition), transform var(--transition);
    pointer-events: none;
}
.rail-item:hover .rail-item__num { border-color: var(--color-primary); color: var(--color-primary); }
.rail-item:hover .rail-item__label { opacity: 1; transform: none; }
.rail-item.is-active .rail-item__num { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* =========================================================
   Декор боковых полей: вертикальные «поля чертежа» + лёгкая
   точечная текстура только в пустых гуттерах (десктоп).
   ========================================================= */
.page-decor {
    position: fixed; inset: 0; z-index: 1; pointer-events: none;
    display: none;
    background-image: radial-gradient(rgba(43, 125, 233, 0.05) 1px, transparent 1.6px);
    background-size: 24px 24px;
    -webkit-mask-image: linear-gradient(90deg, #000 0, #000 calc(50% - 620px), transparent calc(50% - 600px), transparent calc(50% + 600px), #000 calc(50% + 620px), #000 100%);
            mask-image: linear-gradient(90deg, #000 0, #000 calc(50% - 620px), transparent calc(50% - 600px), transparent calc(50% + 600px), #000 calc(50% + 620px), #000 100%);
}
@media (min-width: 1240px) {
    .page-decor { display: block; }
}
.page-decor::before, .page-decor::after {
    content: ''; position: absolute; top: 0; bottom: 0; width: 1px;
    background: linear-gradient(180deg, transparent, var(--color-border) 10%, var(--color-border) 90%, transparent);
}
.page-decor::before { left: calc(50% - 600px); }
.page-decor::after  { left: calc(50% + 600px); }

/* ---------- Reset / база ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: var(--lh);
    color: var(--color-body);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main { flex: 1 0 auto; }

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
    color: var(--color-ink);
    line-height: 1.25;
    font-weight: 700;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--color-primary-600); }

/* Видимый фокус для доступности */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--color-primary-50);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ---------- Раскладка ---------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-inline: var(--container-pad);
}

.section { padding-block: var(--space-16); }

.section-title {
    text-align: center;
    margin-bottom: var(--space-8);
    font-size: var(--fs-h2);
}

.grid { display: grid; gap: var(--space-8); }

.text-center { text-align: center; }

/* ---------- Кнопки ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.7rem 1.4rem;
    font-size: var(--fs-body);
    font-weight: 600;
    font-family: inherit;
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    cursor: pointer;
    text-align: center;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn--primary {
    background: var(--color-primary);
    color: #fff;
}
.btn--primary:hover {
    background: var(--color-primary-600);
    color: #fff;
}
.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn--ghost:hover {
    background: var(--color-primary-50);
}
.btn--sm { padding: 0.5rem 1rem; font-size: var(--fs-small); }
.btn--lg { padding: 0.9rem 1.8rem; font-size: 1.05rem; }
.btn--disabled,
.btn[disabled] {
    background: var(--accent-muted);
    color: #fff;
    cursor: not-allowed;
    pointer-events: none;
}

/* ---------- Карточка ---------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}
.card--hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* =========================================================
   Шапка
   ========================================================= */
.site-header {
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    min-height: 64px;
}
.site-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-ink);
    font-weight: 700;
    font-size: 1.15rem;
}
.site-logo:hover { color: var(--color-ink); }
.site-logo__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    font-weight: 800;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}
.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}
.site-nav a {
    color: var(--color-body);
    font-weight: 500;
}
.site-nav a:hover { color: var(--color-primary); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--color-ink);
    cursor: pointer;
}

/* =========================================================
   Подвал (CMS-управляемый)
   ========================================================= */
.site-footer {
    background: var(--color-ink);
    color: #fff;
    padding: var(--space-12) 0 var(--space-8);
    margin-top: var(--space-16);
}
.site-footer__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}
.footer-col { text-align: center; }
.footer-col h3 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-2);
    position: relative;
}
.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 40px; height: 2px;
    background: var(--color-primary);
}
.footer-person-name { font-weight: 700; margin-bottom: var(--space-2); }
.footer-phone-row {
    display: flex; align-items: center; justify-content: center;
    gap: var(--space-2); margin-bottom: var(--space-2);
    flex-wrap: wrap;
}
.footer-phone { font-weight: 700; }
.footer-desc { font-size: var(--fs-small); color: #cbd5e1; }

.icon-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 50%;
    background: #0088cc; transition: background var(--transition), transform var(--transition);
}
.icon-btn:hover { background: #0077b5; transform: scale(1.1); }
.icon-btn svg { width: 16px; height: 16px; fill: #fff; }

.vk-link {
    display: inline-flex; align-items: center; justify-content: center;
    gap: var(--space-2);
    background: #4a76a8; color: #fff;
    padding: 0.6rem 1.2rem; border-radius: var(--radius-sm);
    font-size: var(--fs-small); transition: background var(--transition), transform var(--transition);
}
.vk-link:hover { background: #3d638f; color: #fff; transform: translateY(-2px); }
.vk-link svg { width: 18px; height: 18px; fill: #fff; }

.footer-meta {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
}
.footer-meta p { margin-bottom: var(--space-2); }
.footer-copyright {
    text-align: center;
    padding-top: var(--space-4);
    margin-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--fs-small);
    color: #9aa5b1;
}

/* =========================================================
   Адаптивность
   ========================================================= */
@media (max-width: 1024px) {
    .site-footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .site-nav {
        display: none;
        position: absolute;
        top: 64px; left: 0; right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        background: var(--color-surface);
        box-shadow: var(--shadow-md);
        padding: var(--space-2) var(--container-pad);
    }
    .site-nav.is-open { display: flex; }
    .site-nav a { width: 100%; padding: var(--space-3) 0; }
    .site-header__cta { display: none; }
    .site-footer__grid { grid-template-columns: 1fr; gap: var(--space-12); }
}

/* =========================================================
   Формы, аккаунт и профиль
   ========================================================= */
.field {
    width: 100%; padding: 0.8rem 1rem; font-family: inherit; font-size: var(--fs-body);
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    background: var(--color-surface); color: var(--color-body);
}
.field:focus-visible { outline: 3px solid var(--color-primary-50); border-color: var(--color-primary); }

/* honeypot — скрыт от людей */
.hp-field, .hp-wrap { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

/* Инпуты Django-форм без класса .field (восстановление пароля) */
.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="password"] {
    width: 100%; padding: 0.8rem 1rem; font-family: inherit; font-size: var(--fs-body);
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    background: var(--color-surface); color: var(--color-body);
}
.auth-form input[type="text"]:focus-visible,
.auth-form input[type="email"]:focus-visible,
.auth-form input[type="password"]:focus-visible { outline: 3px solid var(--color-primary-50); border-color: var(--color-primary); }
.auth-form .helptext { font-size: var(--fs-small); color: var(--color-muted); }
.auth-form ul.errorlist { margin: 0; padding-left: 1.1em; color: var(--color-danger); font-size: var(--fs-small); }

.site-nav__account { font-weight: 600; color: var(--color-primary); }

.auth-card { max-width: 460px; margin: 0 auto; }
.auth-card__title { margin-bottom: var(--space-2); }
.auth-card__sub { color: var(--color-muted); font-size: var(--fs-small); margin-bottom: var(--space-6); }
.auth-form { display: grid; gap: var(--space-4); }
.auth-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.auth-field { display: grid; gap: var(--space-2); }
.auth-field__err { color: var(--color-danger); font-size: var(--fs-small); }
.auth-field__err ul, .auth-error ul { margin: 0; padding-left: 1.1em; list-style: disc; }
.auth-error { color: var(--color-danger); font-size: var(--fs-small); border: 1px solid #f3c2c2; border-radius: var(--radius-sm); padding: var(--space-3); background: #fdecec; }
.auth-captcha__label { font-size: var(--fs-small); color: var(--color-body); }
.auth-submit { width: 100%; }
.auth-alt { text-align: center; margin-top: var(--space-6); color: var(--color-muted); font-size: var(--fs-small); }
.auth-messages { max-width: 460px; margin: 0 auto var(--space-6); display: grid; gap: var(--space-2); }
.auth-msg { padding: var(--space-3); border-radius: var(--radius-sm); font-size: var(--fs-small); border: 1px solid var(--color-border); }
.auth-msg--success { background: #eafaf0; border-color: #bfe6cd; color: #1f7a44; }
.auth-msg--error { background: #fdecec; border-color: #f3c2c2; color: var(--color-danger); }

.profile-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-8); }
.profile-head__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.profile-card { margin-bottom: var(--space-6); }
.profile-card__title { font-size: 1.2rem; margin-bottom: var(--space-4); }
.profile-orders, .profile-reviews { display: grid; gap: var(--space-4); }
.profile-order, .profile-review { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); }
.profile-order__head { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-2); }
.profile-order__num { font-weight: 700; color: var(--color-ink); }
.profile-order__date { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--color-muted); }
.profile-order__sum { margin-left: auto; font-family: var(--font-mono); font-weight: 700; color: var(--color-ink); }
.profile-order__items { list-style: none; margin: 0; padding: 0; color: var(--color-muted); font-size: var(--fs-small); display: grid; gap: 2px; }
.profile-review__head { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-2); }
.profile-review__stars { color: #f5a623; letter-spacing: 1px; }
.profile-review__date { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--color-muted); margin-left: auto; }
.profile-review__text { color: var(--color-body); font-size: var(--fs-small); margin: 0; }

@media (max-width: 480px) {
    .auth-grid { grid-template-columns: 1fr; }
}