/* =============================================================================
   Книгосинтез — Landing Page Styles
   Поверх Quark / Spectre CSS
   ============================================================================= */

/* ─── Переменные ──────────────────────────────────────────────────────────── */
:root {
    --ks-ink:      #0f172a;
    --ks-slate:    #1e293b;
    --ks-body:     #334155;
    --ks-muted:    #64748b;
    --ks-subtle:   #94a3b8;
    --ks-gold:     #f59e0b;
    --ks-gold-h:   #d97706;
    --ks-border:   #e2e8f0;
    --ks-bg:       #f8fafc;
    --ks-white:    #ffffff;
    --ks-radius:   8px;
    --ks-shadow:   0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
    --ks-shadow-lg: 0 4px 6px rgba(0,0,0,.05), 0 10px 40px rgba(0,0,0,.12);
}

/* ─── Сброс лишних стилей Quark для лендинга ─────────────────────────────── */
body.landing-page #body-wrapper { padding: 0; }
body.landing-page .section#start { padding: 0; }

/* ─── Шапка ──────────────────────────────────────────────────────────────── */
#header.section {
    background: var(--ks-ink);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding: 0;
}
#header .navbar { padding: 0; }
#header .navbar-section.logo { padding: 8px 0; }

/* Логотип в шапке: иконка + текст */
.ks-logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.ks-logo-icon {
    height: 36px;
    width: auto;
    display: block;
}
.ks-logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--ks-gold);
    letter-spacing: -0.03em;
    text-decoration: none;
    font-family: inherit;
}

/* Навигация в шапке */
.ks-nav { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.ks-nav li a {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.875rem;
    padding: 8px 14px;
    border-radius: 6px;
    text-decoration: none;
    transition: color 0.15s, background 0.15s;
}
.ks-nav li a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.ks-nav li a.ks-nav-cta {
    color: var(--ks-gold);
    border: 1px solid rgba(245, 158, 11, 0.4);
    margin-left: 8px;
}
.ks-nav li a.ks-nav-cta:hover { background: rgba(245, 158, 11, 0.12); color: var(--ks-gold); }

/* ─── Hero ────────────────────────────────────────────────────────────────── */
.ks-hero {
    background: linear-gradient(160deg, #0f172a 0%, #1e293b 55%, #0f2a1e 100%);
    color: #fff;
    padding: 96px 0 108px;
    position: relative;
    overflow: hidden;
}
.ks-hero-glow {
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.ks-label {
    display: inline-block;
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: var(--ks-gold);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 600;
    margin-bottom: 20px;
}
.ks-hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 800;
    color: #fff;
    margin: 0 0 8px;
    letter-spacing: -0.04em;
    line-height: 1.05;
}
.ks-hero-lead {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--ks-subtle);
    margin: 0 0 20px;
    line-height: 1.4;
    font-weight: 400;
}
.ks-hero-desc {
    font-size: 1rem;
    color: #94a3b8;
    max-width: 580px;
    line-height: 1.7;
    margin-bottom: 40px;
}
.ks-cta-group { display: flex; gap: 12px; flex-wrap: wrap; }

/* ─── Кнопки ─────────────────────────────────────────────────────────────── */
.ks-btn {
    display: inline-block;
    padding: 11px 26px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
    border: 1px solid transparent;
}
.ks-btn-gold:visited,
.ks-btn-gold {
    background: var(--ks-gold);
    color: var(--ks-ink);
    border-color: var(--ks-gold);
}
.ks-btn-gold:hover { background: var(--ks-gold-h); border-color: var(--ks-gold-h); color: var(--ks-ink); }
.ks-btn-ghost {
    background: transparent;
    color: rgba(255,255,255,0.75);
    border-color: rgba(255,255,255,0.25);
}
.ks-btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.45); color: #fff; }

/* ─── Секции ─────────────────────────────────────────────────────────────── */
.ks-section { padding: 80px 0; }
.ks-bg-white { background: var(--ks-white); }
.ks-bg-gray  { background: var(--ks-bg); }
.ks-bg-dark  { background: var(--ks-ink); }

/* Заголовок секции */
.ks-sec-head { margin-bottom: 52px; }
.ks-sec-head h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ks-ink);
    letter-spacing: -0.025em;
    margin: 8px 0 12px;
}
.ks-sec-head--light h2 { color: var(--ks-white); }
.ks-sec-head--light .ks-sec-sub { color: var(--ks-subtle); }
.ks-sec-sub {
    font-size: 1rem;
    color: var(--ks-muted);
    line-height: 1.65;
    max-width: 640px;
}
.ks-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ks-gold);
}
.ks-bg-dark .ks-tag { color: #fbbf24; }

/* ─── Карточки (позиционирование) ────────────────────────────────────────── */
.ks-card {
    background: var(--ks-white);
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    padding: 28px 24px;
    height: 100%;
    box-shadow: var(--ks-shadow);
    transition: box-shadow 0.2s, transform 0.2s;
}
.ks-card:hover { box-shadow: var(--ks-shadow-lg); transform: translateY(-2px); }
.ks-card-icon {
    font-size: 1.6rem;
    color: var(--ks-gold);
    margin-bottom: 14px;
    line-height: 1;
}
.ks-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ks-ink);
    margin: 0 0 10px;
    line-height: 1.35;
}
.ks-card p { font-size: 0.875rem; color: var(--ks-muted); margin: 0; line-height: 1.6; }

/* Промежуток между карточками */
.columns .column { padding-bottom: 20px; }

/* ─── Пакет работ ────────────────────────────────────────────────────────── */
.ks-pkg-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}
.ks-pkg-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--ks-white);
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    padding: 14px 16px;
    font-size: 0.875rem;
    color: var(--ks-body);
    font-weight: 500;
}
.ks-pkg-item i {
    font-size: 1.1rem;
    color: var(--ks-gold);
    min-width: 20px;
    text-align: center;
}
.ks-voices-note {
    background: var(--ks-white);
    border: 1px solid var(--ks-border);
    border-left: 3px solid var(--ks-gold);
    border-radius: var(--ks-radius);
    padding: 18px 22px;
}
.ks-voices-note p { margin: 0 0 6px; font-size: 0.9rem; color: var(--ks-body); }
.ks-voices-note p:last-child { margin: 0; }
.ks-note-muted { font-size: 0.82rem !important; color: var(--ks-muted) !important; }

/* ─── Тарифы ─────────────────────────────────────────────────────────────── */
.ks-price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 28px;
    align-items: start;
}
.ks-price-card {
    background: var(--ks-white);
    border: 1px solid var(--ks-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--ks-shadow);
    position: relative;
}
.ks-price-card--featured {
    border-color: var(--ks-gold);
    box-shadow: 0 4px 6px rgba(245,158,11,.12), 0 12px 40px rgba(245,158,11,.12);
}
.ks-pc-badge {
    position: absolute;
    top: -1px;
    right: 20px;
    background: var(--ks-gold);
    color: var(--ks-ink);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: 0 0 8px 8px;
}
.ks-pc-header {
    padding: 28px 24px 20px;
    border-bottom: 1px solid var(--ks-border);
}
.ks-price-card--featured .ks-pc-header {
    background: linear-gradient(135deg, rgba(245,158,11,0.06), rgba(245,158,11,0.02));
}
.ks-pc-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ks-ink);
    margin-bottom: 10px;
}
.ks-pc-price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--ks-ink);
    letter-spacing: -0.03em;
    line-height: 1;
}
.ks-pc-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--ks-muted);
    letter-spacing: 0;
}
.ks-pc-example {
    font-size: 0.78rem;
    color: var(--ks-muted);
    margin-top: 6px;
}
.ks-pc-list {
    list-style: none;
    padding: 16px 24px 24px;
    margin: 0;
}
.ks-pc-list li {
    font-size: 0.875rem;
    color: var(--ks-muted);
    padding: 7px 0;
    border-bottom: 1px solid var(--ks-border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.ks-pc-list li:last-child { border-bottom: none; }
.ks-pc-list li::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--ks-gold);
    border-radius: 50%;
    flex-shrink: 0;
}
.ks-price-note {
    text-align: center;
    font-size: 0.86rem;
    color: var(--ks-muted);
    line-height: 1.6;
}

/* ─── Видео-пример ──────────────────────────────────────────────────────── */
.ks-video-wrap {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 820px;
    margin: 0 auto 16px;
    border-radius: 12px;
    box-shadow: 0 4px 40px rgba(0,0,0,0.5);
}
.ks-video-wrap iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: 0;
}
.ks-video-cap {
    text-align: center;
    font-size: 0.82rem;
    color: var(--ks-subtle);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ─── Для кого ───────────────────────────────────────────────────────────── */
.ks-aud-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.ks-aud-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--ks-white);
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    padding: 12px 16px;
    font-size: 0.875rem;
    color: var(--ks-body);
    font-weight: 500;
}
.ks-aud-item i { color: var(--ks-gold); font-size: 1rem; min-width: 18px; text-align: center; }

/* ─── Контакт ────────────────────────────────────────────────────────────── */
.ks-contact-wrap {
    max-width: 540px;
    margin: 0 auto;
    text-align: center;
}
.ks-contact-wrap h2 { color: var(--ks-white); margin: 8px 0 16px; }
.ks-contact-wrap > p { color: var(--ks-subtle); font-size: 1rem; line-height: 1.65; margin-bottom: 28px; }
.ks-contact-email {
    display: block;
    font-size: 1.3rem;
    color: var(--ks-gold);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 28px;
    transition: color 0.15s;
}
.ks-contact-email:hover { color: #fbbf24; }
.ks-legal-note {
    font-size: 0.78rem;
    color: #475569;
    line-height: 1.65;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

/* ─── Подвал ─────────────────────────────────────────────────────────────── */
#footer.section {
    background: #080e18;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 20px 0;
}
#footer p { color: #2d3748; font-size: 0.8rem; margin: 0; }
#footer a { color: #374151; }
#footer a:hover { color: #6b7280; }

/* ─── Мобильный ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .ks-hero { padding: 64px 0 80px; }
    .ks-hero h1 { font-size: 2.4rem; }
    .ks-section { padding: 56px 0; }
    .ks-pkg-grid { grid-template-columns: 1fr 1fr; }
    .ks-price-grid { grid-template-columns: 1fr; }
    .ks-aud-grid { grid-template-columns: 1fr 1fr; }
    .ks-price-card--featured { margin-top: 0; }
}
@media (max-width: 480px) {
    .ks-pkg-grid { grid-template-columns: 1fr; }
    .ks-aud-grid { grid-template-columns: 1fr; }
    .ks-cta-group { flex-direction: column; }
    .ks-btn { text-align: center; }
}