/* =========================================
   TerraNova — Главный стилевой файл
   ========================================= */

/* ---------- Переменные ---------- */
:root {
  --bg:        #0a1628;
  --bg-card:   #0f2035;
  --bg-card2:  #162840;
  --primary:   #10b981;
  --primary-d: #059669;
  --blue:      #3b82f6;
  --amber:     #f59e0b;
  --text:      #e6edf3;
  --text-sub:  #8b949e;
  --border:    #1e3650;
  --radius:    12px;
  --shadow:    0 4px 24px rgba(0,0,0,.45);
  --transition: .25s ease;
}

/* ---------- Сброс / база ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-d); }
ul { list-style: none; }

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

/* ---------- Типографика ---------- */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }
p  { color: var(--text-sub); }

.section-title { text-align: center; margin-bottom: 16px; }
.section-sub   { text-align: center; color: var(--text-sub); font-size: 1.05rem; max-width: 640px; margin: 0 auto 56px; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 50px; font-size: 1rem;
  font-weight: 600; cursor: pointer; border: 2px solid transparent;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 0 24px rgba(16,185,129,.35);
}
.btn-primary:hover {
  background: var(--primary-d); color: #fff;
  box-shadow: 0 0 36px rgba(16,185,129,.55); transform: translateY(-2px);
}
.btn-outline {
  border-color: var(--primary); color: var(--primary); background: transparent;
}
.btn-outline:hover {
  background: var(--primary); color: #fff;
}
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }
.btn-sm { padding: 9px 20px; font-size: .9rem; }

/* ---------- Бейджи ---------- */
.badge {
  display: inline-block; padding: 4px 14px; border-radius: 50px;
  font-size: .8rem; font-weight: 600; letter-spacing: .05em;
}
.badge-green  { background: rgba(16,185,129,.15); color: var(--primary); }
.badge-blue   { background: rgba(59,130,246,.15); color: var(--blue); }
.badge-amber  { background: rgba(245,158,11,.15);  color: var(--amber); }

/* ---------- Навигация ---------- */
.navbar {
  position: sticky; top: 0; z-index: 999;
  background: rgba(10,22,40,.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 24px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.2rem; color: var(--text);
  white-space: nowrap;
}
.nav-logo svg { width: 36px; height: 36px; }
.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex; align-items: center; gap: 4px;
}
.nav-links a {
  color: var(--text-sub); padding: 6px 12px; border-radius: 8px;
  font-size: .9rem; font-weight: 500; transition: all var(--transition);
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text); background: var(--bg-card2);
}
.nav-cta { margin-left: 8px; }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  width: 24px; height: 2px; background: var(--text); border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Мобильное меню ---------- */
.mobile-menu {
  display: none; flex-direction: column; gap: 2px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  background: rgba(10,22,40,.97);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--text-sub); padding: 10px 14px; border-radius: 8px;
  font-size: .95rem; font-weight: 500; transition: all var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active {
  color: var(--text); background: var(--bg-card2);
}

/* ---------- Hero ---------- */
.hero {
  padding: 100px 0 80px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(16,185,129,.12), transparent);
  pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero-tag { margin-bottom: 20px; }
.hero h1 { margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--primary); }
.hero-desc { font-size: 1.1rem; margin-bottom: 36px; max-width: 480px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 48px;
}
.hero-stat-val { font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.hero-stat-label { font-size: .8rem; color: var(--text-sub); }

/* Интерактивная карта */
.map-wrapper {
  position: relative; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.map-topbar {
  background: var(--bg-card); padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.map-dot { width: 12px; height: 12px; border-radius: 50%; }
.map-title { font-size: .8rem; color: var(--text-sub); margin-left: 6px; }
#interactive-map { height: 380px; background: #1a2e45; }
.map-overlay-badge {
  position: absolute; bottom: 16px; left: 16px;
  background: rgba(10,22,40,.85); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 14px; font-size: .8rem; color: var(--text-sub);
  display: flex; align-items: center; gap: 6px;
}
.map-overlay-badge::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: var(--primary); box-shadow: 0 0 8px var(--primary);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .6; transform: scale(1.3); }
}

/* ---------- Секции ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-card); }

/* ---------- Карточки фич ---------- */
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px;
}
.feat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; transition: all var(--transition);
}
.feat-card:hover {
  border-color: var(--primary); transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(16,185,129,.15);
}
.feat-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: rgba(16,185,129,.12); display: flex; align-items: center;
  justify-content: center; margin-bottom: 20px; font-size: 1.4rem;
}
.feat-card h3 { margin-bottom: 10px; color: var(--text); }
.feat-card p  { font-size: .95rem; }

/* ---------- Шаги ---------- */
.steps-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px; position: relative;
}
.step-card { text-align: center; position: relative; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--blue));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; color: #fff;
  margin: 0 auto 20px;
}
.step-card h3 { margin-bottom: 8px; }

/* ---------- Таблица требований ---------- */
.req-table { width: 100%; border-collapse: collapse; }
.req-table th, .req-table td {
  padding: 14px 20px; text-align: left;
  border-bottom: 1px solid var(--border);
}
.req-table th {
  background: var(--bg-card2); color: var(--primary);
  font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .07em;
}
.req-table tr:hover td { background: rgba(255,255,255,.02); }
.req-table td { color: var(--text-sub); font-size: .95rem; }
.req-table td:first-child { color: var(--text); font-weight: 500; }

/* ---------- FAQ Аккордеон ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
}
.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; cursor: pointer; background: var(--bg-card);
  transition: background var(--transition);
  font-weight: 600; color: var(--text); gap: 16px;
}
.faq-question:hover { background: var(--bg-card2); }
.faq-question.active { color: var(--primary); }
.faq-icon { font-size: 1.2rem; transition: transform var(--transition); flex-shrink: 0; }
.faq-question.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding: 0 24px; background: var(--bg-card);
}
.faq-answer.open { max-height: 400px; padding: 0 24px 20px; }
.faq-answer p { font-size: .95rem; }

/* ---------- Форма контактов ---------- */
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .9rem; font-weight: 500; color: var(--text-sub); }
.form-group input, .form-group textarea, .form-group select {
  background: var(--bg-card2); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 12px 16px;
  font-size: .95rem; font-family: inherit; transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-success {
  display: none; background: rgba(16,185,129,.1); border: 1px solid var(--primary);
  border-radius: 10px; padding: 16px 20px; color: var(--primary); font-weight: 500;
}

/* ---------- Карточки контактов ---------- */
.contact-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.contact-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px; text-align: center;
}
.contact-card-icon { font-size: 2rem; margin-bottom: 14px; }
.contact-card h4 { color: var(--text); margin-bottom: 8px; }
.contact-card p, .contact-card a { font-size: .9rem; color: var(--text-sub); }
.contact-card a:hover { color: var(--primary); }

/* ---------- Компания ---------- */
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.info-block {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
}
.info-block h3 { color: var(--primary); margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 14px; }
.info-row {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 10px 0; border-bottom: 1px solid rgba(30,54,80,.6);
  font-size: .9rem;
}
.info-row:last-child { border-bottom: none; }
.info-label { color: var(--text-sub); flex-shrink: 0; }
.info-value { color: var(--text); font-weight: 500; text-align: right; }

/* ---------- Скачать страница ---------- */
.download-hero { text-align: center; padding: 80px 0 48px; }
.download-box {
  background: var(--bg-card); border: 1px solid var(--primary);
  border-radius: 20px; padding: 56px; text-align: center;
  max-width: 600px; margin: 0 auto;
  box-shadow: 0 0 60px rgba(16,185,129,.12);
}
.download-icon { font-size: 4rem; margin-bottom: 24px; }
.download-version { color: var(--text-sub); font-size: .9rem; margin: 14px 0 32px; }
.download-meta { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.download-meta-item { font-size: .85rem; color: var(--text-sub); display: flex; align-items: center; gap: 6px; }

/* ---------- Changelog ---------- */
.changelog { max-width: 760px; margin: 0 auto; }
.changelog-item {
  display: flex; gap: 24px; padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.changelog-item:last-child { border-bottom: none; }
.changelog-ver { flex-shrink: 0; text-align: right; width: 100px; }
.changelog-ver strong { color: var(--primary); font-size: 1rem; }
.changelog-ver span { display: block; color: var(--text-sub); font-size: .8rem; margin-top: 4px; }
.changelog-list { display: flex; flex-direction: column; gap: 6px; }
.changelog-list li {
  color: var(--text-sub); font-size: .9rem; padding-left: 16px; position: relative;
}
.changelog-list li::before {
  content: '•'; position: absolute; left: 0; color: var(--primary);
}

/* ---------- Страница «О приложении» ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-grid.reverse { direction: rtl; }
.about-grid.reverse > * { direction: ltr; }
.about-text h2 { margin-bottom: 16px; }
.about-text p  { margin-bottom: 16px; }
.about-list { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.about-list li {
  display: flex; align-items: flex-start; gap: 12px;
  color: var(--text-sub); font-size: .95rem;
}
.about-list li::before {
  content: '✓'; color: var(--primary); font-weight: 700;
  flex-shrink: 0; margin-top: 2px;
}

/* ---------- Визуальный экран приложения ---------- */
.app-screen {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow);
}
.app-screen-top {
  background: var(--bg-card2); padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.app-screen-dots { display: flex; gap: 6px; }
.app-screen-dots span {
  width: 10px; height: 10px; border-radius: 50%;
}
.dot-red   { background: #ff5f57; }
.dot-yel   { background: #ffbd2e; }
.dot-grn   { background: #28c840; }
.app-screen-title { font-size: .75rem; color: var(--text-sub); margin-left: 8px; }
.app-screen-body { height: 300px; }
#app-map { height: 100%; }

/* ---------- Возможности страница ---------- */
.features-big-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px;
}
.feature-big-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px; position: relative;
  overflow: hidden; transition: all var(--transition);
}
.feature-big-card:hover {
  border-color: var(--primary); box-shadow: 0 8px 40px rgba(16,185,129,.12);
}
.feature-big-card::after {
  content: ''; position: absolute; top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle at top right, rgba(16,185,129,.08), transparent);
  pointer-events: none;
}
.fbig-num { font-size: 2.5rem; font-weight: 800; color: rgba(16,185,129,.15); margin-bottom: 12px; }
.fbig-icon { font-size: 1.8rem; margin-bottom: 16px; }
.feature-big-card h3 { margin-bottom: 12px; color: var(--text); }
.feature-big-card p { font-size: .9rem; }

/* ---------- Футер ---------- */
.footer {
  background: var(--bg-card); border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.2rem; margin-bottom: 14px; }
.footer-logo span { color: var(--primary); }
.footer-desc { font-size: .9rem; color: var(--text-sub); max-width: 280px; }
.footer-col h4 { color: var(--text); font-size: .9rem; font-weight: 600; margin-bottom: 16px; text-transform: uppercase; letter-spacing: .08em; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { color: var(--text-sub); font-size: .9rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: .85rem; }

/* ---------- Хлебные крошки ---------- */
.breadcrumb {
  display: flex; align-items: center; gap: 8px; padding: 20px 0;
  font-size: .85rem;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--border); }
.breadcrumb-cur { color: var(--text); }

/* ---------- Page Header ---------- */
.page-header {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(16,185,129,.04) 0%, transparent 100%);
}
.page-header h1 { font-size: clamp(1.8rem, 3vw, 2.8rem); margin-bottom: 10px; }
.page-header p   { font-size: 1.05rem; }

/* ---------- Анимации появления ---------- */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- Утилиты ---------- */
.text-center { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-0  { margin-bottom: 0; }
.gap-16 { gap: 16px; }
.color-primary { color: var(--primary); }

/* ---------- Адаптив ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner  { grid-template-columns: 1fr; }
  .company-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 60px 0 48px; }
  .section { padding: 60px 0; }
  .about-grid { grid-template-columns: 1fr; }
  .about-grid.reverse { direction: ltr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 20px; }
  .download-box { padding: 36px 24px; }
  .changelog-item { flex-direction: column; gap: 8px; }
  .changelog-ver { width: auto; text-align: left; }
}

@media (max-width: 480px) {
  .btn-lg { padding: 14px 28px; font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
}