/* ============================================================
   ЛЕНДИНГ — стили для неавторизованных пользователей
   ============================================================ */

:root {
  --accent: #5ac8ff;
  --accent-2: #a06cff;
  --bg: #030612;
  --text: #e8f1ff;
  --muted: #8a9bb8;
  --glass: rgba(12, 20, 40, 0.45);
  --glass-border: rgba(90, 200, 255, 0.18);
}

* { box-sizing: border-box; }

html, body.landing-body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

/* ============================================================
   CANVAS ФОН
   ============================================================ */
#neural-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  transition: opacity 0.8s ease;
  opacity: 1;
}
#neural-bg.is-off {
  opacity: 0;
}

/* Затемняющий градиент поверх canvas для читаемости текста */
.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 30%, transparent 0%, rgba(3,6,18,0.55) 70%),
    linear-gradient(180deg, rgba(3,6,18,0.7) 0%, transparent 25%, transparent 60%, rgba(3,6,18,0.9) 100%);
}

/* ============================================================
   КОНТЕНТ
   ============================================================ */
.wrap {
  position: relative;
  z-index: 2;
  max-width: 1240px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

header.top {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
/* Пульсирующий кружок в логотипе.
   Анимация разделена на 2 слоя (opacity + transform) —
   это даёт плавность в Firefox, где композиция слоёв иначе. */
.logo-dot {
  position: relative;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  display: inline-block;
  animation: logoDotGlow 2.4s ease-in-out infinite;
  will-change: opacity;
}

.logo-dot-inner {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent), 0 0 28px var(--accent-2);
  animation: logoDotScale 2.4s ease-in-out infinite;
  will-change: transform;
}

@keyframes logoDotGlow {
  0%, 100% { opacity: 1;    }
  50%      { opacity: 0.55; }
}

@keyframes logoDotScale {
  0%, 100% { transform: scale(1);   }
  50%      { transform: scale(1.4); }
}
/* ============================================================
   HERO
   ============================================================ */
.hero {
  text-align: center;
  padding: 90px 20px 60px;
}

.hero h1 {
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.05;
  font-weight: 800;
  background: linear-gradient(120deg, #ffffff 0%, var(--accent) 45%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0 0 20px;
}

.hero p {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.65;
}

.cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

.cta-note {
  max-width: 680px;
  margin: 22px auto 0;
  font-size: 13px;
  color: var(--muted);
}

/* ============================================================
   КНОПКИ
   ============================================================ */
.btn {
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041021;
  box-shadow: 0 8px 30px rgba(90,200,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(160,108,255,0.55);
  color: #041021;
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Bootstrap .btn-secondary внутри модалок — подгоняем */
.landing-modal .btn-secondary {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
}
.landing-modal .btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--glass);
}

/* ============================================================
   FEATURES — сетка карточек
   ============================================================ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 80px;
}

.card {
  padding: 26px;
  border-radius: 18px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform .3s, border-color .3s, box-shadow .3s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(90,200,255,0.5);
  box-shadow: 0 20px 50px rgba(90,200,255,0.15);
}

.card h3 {
  font-size: 18px;
  margin: 0 0 10px;
  color: #fff;
}

.card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.card .icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(90,200,255,0.2), rgba(160,108,255,0.2));
  border: 1px solid var(--glass-border);
  margin-bottom: 18px;
  font-size: 20px;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center;
  padding: 60px 20px 20px;
  color: var(--muted);
  font-size: 13px;
}
footer a {
  color: var(--accent);
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}

/* ============================================================
   КНОПКА ПЕРЕКЛЮЧЕНИЯ ФОНА
   ============================================================ */
.bg-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(90, 200, 255, 0.25);
  background: rgba(12, 20, 40, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #5ac8ff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, border-color 0.2s, color 0.2s, background 0.2s;
  padding: 0;
  opacity: 0;
  animation: fadeIn .6s ease .3s forwards;
}
.bg-toggle:hover {
  transform: scale(1.06);
  border-color: rgba(90, 200, 255, 0.6);
  color: #a06cff;
}
.bg-toggle:active {
  transform: scale(0.96);
}
.bg-toggle svg {
  width: 20px;
  height: 20px;
  display: block;
}

.bg-toggle .icon-off { display: block; }
.bg-toggle .icon-on  { display: none;  }
.bg-toggle.is-off .icon-off { display: none;  }
.bg-toggle.is-off .icon-on  { display: block; }

@keyframes fadeIn {
  to { opacity: 1; }
}

/* ============================================================
   МОДАЛКИ (Bootstrap) — стилизация под лендинг
   ============================================================ */

.landing-modal .modal-content {
  background: linear-gradient(180deg, #0a1228 0%, #060b1a 100%);
  color: var(--text);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.landing-modal .modal-header {
  border-bottom: 1px solid var(--glass-border);
  padding: 18px 22px;
}

.landing-modal .modal-title {
  font-weight: 700;
  font-size: 18px;
  color: #fff;
}

.landing-modal .modal-body {
  padding: 22px;
}

.landing-modal .modal-footer {
  border-top: 1px solid var(--glass-border);
  padding: 14px 22px;
}

/* Кнопка закрытия */
.landing-modal .btn-close {
  filter: invert(1) brightness(2);
  opacity: 0.7;
}
.landing-modal .btn-close:hover {
  opacity: 1;
}

/* Поля ввода */
.landing-modal .form-label {
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

.landing-modal .form-control {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color .15s, background .15s, box-shadow .15s;
}

.landing-modal .form-control::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.landing-modal .form-control:focus {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--accent);
  color: var(--text);
  box-shadow: 0 0 0 3px rgba(90, 200, 255, 0.15);
  outline: none;
}

/* Чекбокс (соглашение) */
.landing-modal .form-check-input {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--glass-border);
  cursor: pointer;
}
.landing-modal .form-check-input:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}
.landing-modal .form-check-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(90, 200, 255, 0.15);
}

.landing-modal .form-check-label {
  color: var(--muted);
  line-height: 1.5;
}

.landing-modal .form-check-label .landing-link {
  color: var(--accent);
  text-decoration: none;
}
.landing-modal .form-check-label .landing-link:hover {
  text-decoration: underline;
}

/* Ссылки внутри модалки */
.landing-link {
  color: var(--accent);
  text-decoration: none;
  transition: color .15s;
}
.landing-link:hover {
  color: var(--accent-2);
  text-decoration: underline;
}

/* Alert с ошибками */
.landing-error {
  background: rgba(239, 68, 68, 0.12) !important;
  border: 1px solid rgba(239, 68, 68, 0.35) !important;
  color: #fca5a5 !important;
  border-radius: 10px;
  font-size: 13px;
  padding: 10px 12px;
  margin-bottom: 14px;
}
.landing-error a {
  color: #fca5a5;
  text-decoration: underline;
}

/* Кнопка submit */
.landing-submit {
  min-width: 140px;
}

/* Backdrop (затемнение) под модалкой */
.landing-modal .modal-backdrop,
body.landing-body .modal-backdrop {
  background-color: rgba(3, 6, 18, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.landing-modal .modal-backdrop.show,
body.landing-body .modal-backdrop.show {
  opacity: 1;
}

/* Скругления углов */
.landing-modal .modal-content {
  overflow: hidden;
}

/* ============================================================
   АДАПТИВ
   ============================================================ */
@media (max-width: 640px) {
  .wrap { padding: 20px 16px 60px; }
  .hero { padding: 60px 12px 40px; }
  .cta { flex-direction: column; align-items: stretch; }
  .cta .btn { width: 100%; }
  .bg-toggle { top: 16px; right: 16px; width: 40px; height: 40px; }
  .card { padding: 20px; }
  .landing-modal .modal-body { padding: 18px; }
  .landing-modal .modal-header,
  .landing-modal .modal-footer { padding: 14px 18px; }
}

/* ============================================================
   FIX: контраст для служебного текста в модалках
   ============================================================ */

.landing-modal .text-muted {
  color: var(--muted) !important;
  opacity: 0.85;
}

/* Мелкие подписи под полями (внутри label) */
.landing-modal .form-label .text-muted,
.landing-modal .form-label small {
  color: var(--muted) !important;
  opacity: 0.85;
  font-weight: 400;
}

/* Параграфы-подсказки под полями (например, "Мы отправим письмо...") */
.landing-modal p.text-muted,
.landing-modal .modal-body > p {
  color: var(--muted) !important;
  opacity: 0.85;
  font-size: 12.5px;
  line-height: 1.5;
  margin-top: 14px;
  margin-bottom: 0;
}