/* landing.css — презентационная страница (лендинг).
   Структура и анимации — по макету заказчика (дрон, кольца сигнала,
   макет «экрана» с пультами, карточки возможностей и применения, форма).
   Цвета берутся из переменных site.css, поэтому страница живёт в обеих
   темах сайта. Внешних запросов нет — только шрифты и иконки системы. */

.landing {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.landing .container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Кнопки (пилюли, как в макете) ---------- */
.landing .btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--speed) ease;
}

.landing .btn-primary {
  background: var(--grad);
  color: #fff;
}

.landing .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(91, 110, 225, 0.35);
}

.landing .btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.landing .btn-secondary:hover {
  background: rgba(91, 110, 225, 0.12);
  transform: translateY(-3px);
}

/* ---------- Герой-секция ---------- */
.landing .hero {
  padding: 110px 0 80px;
  background:
    radial-gradient(60% 90% at 85% 20%, rgba(91, 110, 225, 0.18), transparent 65%),
    linear-gradient(135deg, var(--bg-2) 0%, var(--surface-2) 100%);
  overflow: hidden;
}

.landing .hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}

.landing .hero-content {
  flex: 1;
  min-width: 300px;
  padding-right: 30px;
}

.landing .hero-title {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
}

.landing .hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-2);
  margin-bottom: 30px;
  max-width: 600px;
}

.landing .hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.landing .hero-visual {
  flex: 1;
  min-width: 300px;
  position: relative;
  height: 350px;
}

/* Дрон с пропеллерами (чистый CSS) */
.landing .drone-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  z-index: 2;
}

.landing .drone {
  width: 100%;
  height: 100%;
  position: relative;
  animation: lp-float 3s ease-in-out infinite;
}

.landing .drone-body {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 40px;
  background-color: var(--text);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.landing .drone-center {
  width: 30px;
  height: 30px;
  background: var(--grad);
  border-radius: 50%;
}

.landing .propeller {
  position: absolute;
  width: 40px;
  height: 10px;
  background-color: var(--text-2);
  border-radius: 5px;
}

.landing .prop1 { top: -20px; left: 20px; }
.landing .prop2 { top: 50px;  left: 20px; }
.landing .prop3 { top: 15px;  left: -30px; transform: rotate(90deg); }
.landing .prop4 { top: 15px;  left: 70px;  transform: rotate(90deg); }

.landing .camera {
  position: absolute;
  top: 15px;
  right: -10px;
  width: 15px;
  height: 15px;
  background-color: var(--ok);
  border-radius: 50%;
}

/* Кольца сигнала вокруг дрона */
.landing .signal-animation {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
}

.landing .signal-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid rgba(91, 110, 225, 0.35);
  animation: lp-ripple 3s linear infinite;
}

.landing .delay-1 { animation-delay: 1s; }
.landing .delay-2 { animation-delay: 2s; }

/* ---------- Секции ---------- */
.landing .section {
  padding: 80px 0;
}

.landing .section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  color: var(--text);
}

/* Рисунок «пульт — бегущий импульс — дрон» */
.landing .channel {
  margin: 0 auto 50px;
  max-width: 900px;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

/* ---------- О технологии ---------- */
.landing .about-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
}

.landing .about-text {
  flex: 1;
  min-width: 300px;
}

.landing .about-text p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  color: var(--text-2);
}

.landing .features-list {
  list-style: none;
  margin-top: 30px;
}

.landing .features-list li {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.landing .li-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  color: var(--accent);
}

.landing .li-ic svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.landing .about-image {
  flex: 1;
  min-width: 300px;
}

/* Макет «экрана» с пультами (чистый CSS) */
.landing .tech-demo {
  background-color: var(--text);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.landing .screen {
  background-color: #1e1e1e;
  border-radius: 10px;
  overflow: hidden;
  height: 300px;
}

.landing .screen-header {
  background-color: #2d2d2d;
  padding: 12px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.landing .screen-dots {
  display: flex;
  gap: 8px;
}

.landing .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.landing .red    { background-color: var(--bad); }
.landing .yellow { background-color: var(--warn); }
.landing .green  { background-color: var(--ok); }

.landing .screen-title {
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
}

.landing .screen-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  height: calc(100% - 40px);
}

.landing .map-view {
  flex: 1;
  background-color: #0a3d62;
  border-radius: 8px;
  margin-bottom: 15px;
  position: relative;
  overflow: hidden;
}

.landing .map-view::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 20px 20px;
}

.landing .controls {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}

.landing .joystick {
  width: 60px;
  height: 60px;
  background-color: #333;
  border-radius: 50%;
  position: relative;
}

.landing .joystick::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  background-color: var(--accent);
  border-radius: 50%;
}

.landing .data-panel {
  display: flex;
  justify-content: space-between;
  background-color: #2d2d2d;
  border-radius: 8px;
  padding: 12px 15px;
}

.landing .data-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.landing .data-label {
  color: #aaa;
  font-size: 0.8rem;
  margin-bottom: 5px;
}

.landing .data-value {
  color: #f8f9fa;
  font-weight: 500;
  font-size: 0.9rem;
}

.landing .data-value.active {
  color: var(--ok);
}

/* ---------- Возможности ---------- */
.landing .features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.landing .feature-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--speed) ease;
  text-align: center;
}

.landing .feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.18);
}

.landing .feature-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(91, 110, 225, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--accent);
}

.landing .feature-icon svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.landing .feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text);
}

.landing .feature-description {
  color: var(--text-2);
  line-height: 1.6;
}

/* ---------- Применение ---------- */
.landing .applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.landing .application-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--speed) ease;
}

.landing .application-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.18);
}

/* «Фото» областей — градиенты с иконкой, внешних картинок нет */
.landing .application-image {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
}

.landing .application-image svg {
  width: 72px;
  height: 72px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.landing .security     { background-image: linear-gradient(135deg, #2b3a67, #4a5fc1); }
.landing .delivery     { background-image: linear-gradient(135deg, #155e63, #2fa8a0); }
.landing .agriculture  { background-image: linear-gradient(135deg, #2e6b34, #74c476); }
.landing .inspection   { background-image: linear-gradient(135deg, #6b3fa0, #b07cd8); }

.landing .application-content {
  padding: 25px;
}

.landing .application-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.landing .application-content p {
  color: var(--text-2);
  line-height: 1.6;
}

/* ---------- Контакты ---------- */
.landing .contact-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.landing .contact-info {
  flex: 1;
  min-width: 300px;
}

.landing .contact-info h3 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text);
}

.landing .contact-info > p {
  color: var(--text-2);
  margin-bottom: 30px;
}

.landing .contact-details {
  margin-bottom: 30px;
}

.landing .contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  gap: 12px;
}

.landing .dim {
  color: var(--text-2);
}

.landing a {
  color: var(--accent);
}

.landing .contact-form {
  flex: 1;
  min-width: 300px;
}

.landing .form-group {
  margin-bottom: 20px;
}

.landing .form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text);
}

.landing .form-group input,
.landing .form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  transition: var(--speed) ease;
}

.landing .form-group input:focus,
.landing .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 110, 225, 0.25);
}

.landing .form-response {
  margin-bottom: 20px;
  padding: 15px;
  border-radius: 8px;
  font-weight: 500;
}

.landing .form-response.success {
  background-color: rgba(61, 220, 151, 0.12);
  color: var(--ok);
}

.landing .form-response.error {
  background-color: rgba(255, 107, 126, 0.12);
  color: var(--bad);
}

/* ---------- Анимации ---------- */
@keyframes lp-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

@keyframes lp-ripple {
  0%   { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ---------- Адаптивность ---------- */
@media (max-width: 992px) {
  .landing .hero-title   { font-size: 2.3rem; }
  .landing .section-title { font-size: 2.2rem; }
}

@media (max-width: 768px) {
  .landing .hero {
    padding: 70px 0 60px;
  }
  .landing .hero-title { font-size: 2rem; }
  .landing .hero-visual {
    margin-top: 40px;
    width: 100%;
  }
  .landing .hero-content {
    padding-right: 0;
  }
  .landing .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .landing .btn {
    width: 100%;
    margin-bottom: 10px;
  }
}

@media (max-width: 576px) {
  .landing .hero-title    { font-size: 1.8rem; }
  .landing .section-title { font-size: 1.8rem; }
  .landing .contact-wrapper { padding: 25px; }
}