/* ============================================================
   Хэдлайн — основные стили
   Палитра: #1A1F2E (тёмный), #FFFFFF (белый), #2563EB (акцент)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: #1A1F2E; background: #fff; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:hover { color: #2563EB; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

:root {
  --dark:      #1A1F2E;
  --dark-80:   #2D3547;
  --dark-60:   #4A5568;
  --blue:      #2563EB;
  --blue-dark: #1D4ED8;
  --light:     #F5F7FA;
  --border:    #E2E8F0;
  --white:     #FFFFFF;
  --radius:    6px;
  --shadow:    0 2px 12px rgba(0,0,0,.08);
  --transition: .2s ease;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: var(--dark); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

.section-label { display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); margin-bottom: 12px; }
.section-title { margin-bottom: 16px; }
.section-subtitle { font-size: 1.05rem; color: var(--dark-60); max-width: 640px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius); font-size: .9375rem; font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: background var(--transition), color var(--transition), border-color var(--transition); white-space: nowrap; text-align: center; }
.btn--primary       { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-dark); color: #fff; }
.btn--outline       { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn--outline:hover { background: var(--blue); color: #fff; }
.btn--outline--white       { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--outline--white:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn--ghost       { background: transparent; color: var(--dark-60); }
.btn--ghost:hover { color: var(--dark); }
.btn--sm  { padding: 8px 18px; font-size: .875rem; }
.btn--lg  { padding: 16px 40px; font-size: 1rem; }
.btn--block { width: 100%; justify-content: center; }

/* Badges */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.badge--new      { background: #EFF6FF; color: var(--blue); }
.badge--progress { background: #FFFBEB; color: #D97706; }
.badge--closed   { background: #F0FDF4; color: #16A34A; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--white); border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: 40px; height: 68px; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo__mark { width: 36px; height: 36px; background: var(--dark); color: #fff; font-weight: 800; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; border-radius: 6px; }
.logo--light .logo__mark { background: #fff; color: var(--dark); }
.logo__text { font-size: 1.1rem; font-weight: 700; color: var(--dark); }
.logo--light .logo__text { color: #fff; }

.nav { flex: 1; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; }
.nav__link { display: flex; align-items: center; gap: 4px; padding: 8px 14px; font-size: .9rem; font-weight: 500; color: var(--dark-60); border-radius: var(--radius); transition: color var(--transition), background var(--transition); }
.nav__link:hover, .nav__link--active { color: var(--dark); background: var(--light); }
.nav__arrow { font-size: .65rem; opacity: .5; }
.nav__dropdown { display: none; position: absolute; top: 100%; left: 0; min-width: 220px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 0; z-index: 200; padding-top: 16px; margin-top: 0; }
/* Псевдоэлемент перекрывает зазор между ссылкой и dropdown, чтобы hover не терялся */
.nav__dropdown::before { content: ''; position: absolute; top: -8px; left: 0; right: 0; height: 8px; }
.nav__item--dropdown:hover .nav__dropdown { display: block; }
.nav__dropdown li a { display: block; padding: 9px 18px; font-size: .875rem; color: var(--dark-60); transition: color var(--transition), background var(--transition); }
.nav__dropdown li a:hover { color: var(--dark); background: var(--light); }
.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-shrink: 0; }

/* Бургер — скрыт на десктопе */
.burger { display: none; flex-direction: column; justify-content: space-between; width: 26px; height: 18px; background: none; border: none; cursor: pointer; padding: 0; flex-shrink: 0; }
.burger span { display: block; height: 2px; background: var(--dark); border-radius: 2px; transform-origin: center; transition: transform .3s ease, opacity .3s ease; }
.burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Мобильное меню (поверх страницы) */
.nav.open { display: flex !important; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: #fff; padding: 24px; overflow-y: auto; z-index: 99; }
.nav.open .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
.nav.open .nav__item--dropdown:hover .nav__dropdown { display: none; }
.nav.open .nav__dropdown { display: block; position: static; box-shadow: none; border: none; padding: 4px 0 4px 16px; }
.nav.open .nav__link { padding: 12px 8px; font-size: 1rem; border-bottom: 1px solid var(--border); border-radius: 0; }
.nav.open .nav__dropdown li a { padding: 10px 8px; border-bottom: 1px solid var(--light); }

/* Sections */
.section { padding: 96px 0; }
.section--dark { background: var(--dark); color: #fff; }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }
.section--dark .section-subtitle { color: rgba(255,255,255,.65); }
.section--light { background: var(--light); }

/* Hero */
.hero { background: var(--dark); color: #fff; padding: 120px 0 100px; }
.hero .section-label { color: rgba(255,255,255,.5); }
.hero h1 { color: #fff; max-width: 720px; margin-bottom: 20px; }
.hero__sub { font-size: 1.125rem; color: rgba(255,255,255,.7); max-width: 560px; margin-bottom: 40px; line-height: 1.7; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Stat bar */
.stat-bar { background: #fff; border-bottom: 1px solid var(--border); padding: 28px 0; }
.stat-bar__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; }
.stat-item__number { font-size: 2rem; font-weight: 800; color: var(--dark); line-height: 1; }
.stat-item__label  { font-size: .8125rem; color: var(--dark-60); margin-top: 4px; }

/* Cards */
.cards-grid { display: grid; gap: 20px; }
.cards-grid--2 { grid-template-columns: repeat(2, 1fr); }
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; transition: box-shadow var(--transition), border-color var(--transition); }
.card:hover { box-shadow: var(--shadow); border-color: #CBD5E1; }
.card--dark { background: var(--dark-80); border-color: rgba(255,255,255,.08); color: #fff; }
.card--dark h3, .card--dark h4 { color: #fff; }
.card__icon { width: 48px; height: 48px; background: #EFF6FF; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 1.5rem; }
.card--dark .card__icon { background: rgba(37,99,235,.25); }
.card h3, .card h4 { margin-bottom: 10px; }
.card p { font-size: .9375rem; color: var(--dark-60); line-height: 1.65; }
.card--dark p { color: rgba(255,255,255,.6); }
.card__link { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-size: .875rem; font-weight: 600; color: var(--blue); }
.card__link:hover { gap: 10px; }

.section-header { margin-bottom: 56px; }
.section-header--center { text-align: center; }
.section-header--center .section-subtitle { margin: 0 auto; }

/* For whom */
.for-whom__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.for-whom-item { padding: 36px 32px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.for-whom-item__num { font-size: 2.5rem; font-weight: 800; color: var(--border); line-height: 1; margin-bottom: 16px; }
.for-whom-item h3 { margin-bottom: 10px; }
.for-whom-item p  { font-size: .9rem; color: var(--dark-60); }

/* Cases */
.case-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; transition: box-shadow var(--transition); }
.case-card:hover { box-shadow: var(--shadow); }
.case-card__segment { display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); background: #EFF6FF; padding: 3px 10px; border-radius: 20px; margin-bottom: 16px; }
.case-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.case-card__client { font-size: .8125rem; color: var(--dark-60); margin-bottom: 16px; }
.case-card__result { border-top: 1px solid var(--border); margin-top: 20px; padding-top: 16px; font-size: .875rem; color: var(--dark-60); }
.case-card__result strong { color: #16A34A; }

/* CTA */
.cta-section { background: var(--dark); padding: 96px 0; text-align: center; }
.cta-section h2 { color: #fff; margin-bottom: 16px; }
.cta-section p  { color: rgba(255,255,255,.65); max-width: 520px; margin: 0 auto 40px; }

/* Why */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); overflow: hidden; }
.why-item { padding: 36px 28px; border-right: 1px solid rgba(255,255,255,.08); }
.why-item:last-child { border-right: none; }
.why-item__num { font-size: 2.25rem; font-weight: 800; color: var(--blue); line-height: 1; margin-bottom: 10px; }
.why-item h4 { color: #fff; margin-bottom: 8px; }
.why-item p  { font-size: .875rem; color: rgba(255,255,255,.55); }

/* Form */
.form { display: flex; flex-direction: column; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .875rem; font-weight: 500; color: var(--dark); }
.form-group input, .form-group textarea, .form-group select { padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius); font-size: .9375rem; color: var(--dark); background: #fff; transition: border-color var(--transition); outline: none; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--blue); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form__note { font-size: .8125rem; color: var(--dark-60); }
.form__row  { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Alert */
.alert { padding: 14px 18px; border-radius: var(--radius); font-size: .9rem; margin-bottom: 16px; }
.alert--success { background: #F0FDF4; color: #15803D; border: 1px solid #BBF7D0; }
.alert--error   { background: #FEF2F2; color: #DC2626; border: 1px solid #FECACA; }

/* Auth */
.auth-page { min-height: calc(100vh - 68px); display: flex; align-items: center; justify-content: center; background: var(--light); padding: 48px 24px; }
.auth-box { width: 100%; max-width: 440px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; }
.auth-box__title  { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.auth-box__sub    { font-size: .9rem; color: var(--dark-60); margin-bottom: 32px; }
.auth-box__footer { text-align: center; margin-top: 20px; font-size: .875rem; color: var(--dark-60); }
.auth-box__footer a { color: var(--blue); font-weight: 500; }

/* Cabinet */
.cabinet-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; padding: 48px 0; }
.cabinet-sidebar { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 0; height: fit-content; }
.cabinet-sidebar__name { padding: 0 20px 20px; font-weight: 600; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.cabinet-nav a { display: block; padding: 10px 20px; font-size: .9rem; color: var(--dark-60); transition: color var(--transition), background var(--transition); }
.cabinet-nav a:hover, .cabinet-nav a.active { color: var(--dark); background: var(--light); }
.cabinet-main h2 { margin-bottom: 24px; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: .875rem; }
th { background: var(--light); font-weight: 600; color: var(--dark); }
tr:hover td { background: #FAFAFA; }

/* Page hero */
.page-hero { background: var(--dark); padding: 80px 0 72px; color: #fff; }
.page-hero h1 { color: #fff; margin-bottom: 12px; }
.page-hero p  { color: rgba(255,255,255,.65); font-size: 1.05rem; max-width: 560px; }

/* Blog */
.post-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: box-shadow var(--transition); }
.post-card:hover { box-shadow: var(--shadow); }
.post-card__meta { font-size: .8rem; color: var(--dark-60); margin-bottom: 12px; }
.post-card h3 { margin-bottom: 10px; }
.post-card p  { font-size: .9rem; color: var(--dark-60); margin-bottom: 16px; }

/* Contacts */
.contacts-layout { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start; }
.contacts-info h2 { margin-bottom: 24px; }
.contacts-info__item  { margin-bottom: 20px; }
.contacts-info__label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--dark-60); margin-bottom: 4px; }
.contacts-info__value { font-size: 1rem; }
.contacts-info__value a:hover { color: var(--blue); }

/* Breadcrumbs */
.breadcrumbs { padding: 14px 0; }
.breadcrumbs__list { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumbs__list li { font-size: .8125rem; color: rgba(255,255,255,.45); }
.breadcrumbs__list li a { color: rgba(255,255,255,.45); }
.breadcrumbs__list li a:hover { color: rgba(255,255,255,.8); }
.breadcrumbs__list li::after { content: '/'; margin-left: 8px; }
.breadcrumbs__list li:last-child { color: rgba(255,255,255,.75); }
.breadcrumbs__list li:last-child::after { display: none; }

/* Admin */
.admin-layout  { display: flex; min-height: 100vh; }
.admin-sidebar { width: 240px; background: var(--dark); flex-shrink: 0; display: flex; flex-direction: column; }
.admin-sidebar__logo { padding: 24px 20px; border-bottom: 1px solid rgba(255,255,255,.08); font-weight: 700; font-size: 1rem; color: #fff; }
.admin-nav { padding: 12px 0; flex: 1; }
.admin-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 20px; font-size: .875rem; color: rgba(255,255,255,.6); transition: color var(--transition), background var(--transition); }
.admin-nav a:hover, .admin-nav a.active { color: #fff; background: rgba(255,255,255,.06); }
.admin-content { flex: 1; background: var(--light); }
.admin-topbar { background: #fff; border-bottom: 1px solid var(--border); padding: 0 32px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.admin-topbar__title { font-weight: 700; font-size: 1.05rem; }
.admin-body   { padding: 32px; }
.admin-card   { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.admin-card__title { font-size: 1rem; font-weight: 700; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.admin-stats  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.admin-stat   { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; }
.admin-stat__num   { font-size: 2rem; font-weight: 800; color: var(--dark); }
.admin-stat__label { font-size: .8rem; color: var(--dark-60); margin-top: 4px; }

/* Footer */
.site-footer { background: var(--dark); color: rgba(255,255,255,.6); padding: 64px 0 40px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer__tagline { font-size: .875rem; margin-top: 14px; line-height: 1.6; }
.footer__copy    { font-size: .8rem; margin-top: 24px; color: rgba(255,255,255,.3); }
.footer__heading { font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.35); margin-bottom: 16px; }
.footer__links li + li { margin-top: 10px; }
.footer__links a  { font-size: .875rem; transition: color var(--transition); }
.footer__links a:hover { color: #fff; }
.footer__contacts li { font-size: .875rem; margin-bottom: 10px; }
.footer__contacts a:hover { color: #fff; }

/* About grid — отдельный класс для адаптива */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }

/* Responsive */
@media (max-width: 1024px) {
  .cards-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .why-item { border-right: 1px solid rgba(255,255,255,.08); border-bottom: 1px solid rgba(255,255,255,.08); }
  .footer__grid { grid-template-columns: repeat(3, 1fr); }
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 48px; }
}

/* Хедер переходит в бургер раньше, чтобы не ломаться */
@media (max-width: 1060px) {
  .site-header .container { justify-content: space-between; gap: 0; }
  .nav, .header-actions { display: none; }
  .burger { display: flex; margin-left: 0; }
}

/* Мобильное меню */
.nav.open { display: flex !important; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: #fff; padding: 24px; overflow-y: auto; z-index: 99; }
.nav.open .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
/* В мобиле hover полностью отключён — только js-open управляет dropdown */
.nav.open .nav__item--dropdown .nav__dropdown { display: none !important; }
.nav.open .nav__item--dropdown.js-open .nav__dropdown { display: block !important; }
.nav.open .nav__dropdown { position: static; box-shadow: none; border: none; padding: 4px 0 4px 16px; margin-top: 0; padding-top: 4px; }
.nav.open .nav__dropdown::before { display: none; }
.nav.open .nav__link { padding: 12px 8px; font-size: 1rem; border-bottom: 1px solid var(--border); border-radius: 0; }
.nav.open .nav__dropdown li a { display: block; padding: 10px 8px; border-bottom: 1px solid var(--light); font-size: .9rem; color: var(--dark-60); }
.nav.open .nav__dropdown li a:hover { color: var(--dark); }

@media (max-width: 768px) {
  .hero { padding: 80px 0 64px; }
  .section { padding: 64px 0; }
  .stat-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .cards-grid--2, .cards-grid--3, .cards-grid--4 { grid-template-columns: 1fr; }
  .for-whom__grid  { grid-template-columns: 1fr; }
  .about-grid      { grid-template-columns: 1fr; gap: 40px; }
  .contacts-layout { grid-template-columns: 1fr; gap: 40px; }
  .footer__grid    { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cabinet-layout  { grid-template-columns: 1fr; }
  .form__row       { grid-template-columns: 1fr; }
  .admin-layout    { flex-direction: column; }
  .admin-sidebar   { width: 100%; }
  .hero__actions { flex-wrap: wrap; gap: 10px; }
  .btn { white-space: normal; text-align: center; }
}
@media (max-width: 480px) {
  .footer__grid    { grid-template-columns: 1fr; }
  .hero__actions   { flex-direction: column; align-items: flex-start; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .section .btn + .btn { margin-left: 0 !important; margin-top: 10px; }
}