/* ---------------------------
   GLOBAL STYLES
--------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #111827;
  --secondary-color: #374151;
  --accent-color: #888888;
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --background: #121212;
  --background-alt: #374151;
  --border-color: #444444;
  --nav-height: 72px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
    sans-serif;
  background: var(--background-alt);
  color: var(--text-primary);
  line-height: 1.6;
}

.main-content {
  margin-top: var(--nav-height);
}

.hero-section {
  padding: clamp(60px, 12vw, 120px) clamp(16px, 4vw, 32px);
  text-align: center;
  background: var(--background);
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -1px;
  line-height: 1.1;
}

.hero-description {
  font-size: clamp(16px, 3vw, 20px);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-btn {
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.hero-btn.primary {
  background: var(--accent-color);
  color: #ffffff;
}

.hero-btn.primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.hero-btn.secondary {
  background: var(--background-alt);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.hero-btn.secondary:hover {
  background: var(--accent-color);
}

.content-section {
  padding: clamp(40px, 8vw, 80px) clamp(16px, 4vw, 32px);
}

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

.feature-grid {
  display: grid;
  grid-template-columns: 1fr; /* single column */
  gap: clamp(24px, 4vw, 32px);
}

.feature-card {
  background: var(--background);
  padding: clamp(24px, 4vw, 32px);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--background-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent-color);
  stroke-width: 2;
}

.feature-title {
  font-size: clamp(18px, 3vw, 22px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------------------------
   SLIDER STYLES
--------------------------- */
.feature-image {
  margin-bottom: 16px;
  text-align: center;
}

.slider {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.list {
  position: relative;
  display: flex;
  transition: 0.5s ease;
  height: 100%;
}

.list .item {
  flex: 0 0 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.list img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* show full image */
  display: block;
  margin: 0 auto;
  background: #121212; /* optional background for letterboxing */
}

.list:hover {
  cursor: zoom-in;
}

/* ---------------------------
   BUTTONS
--------------------------- */
.buttons {
  position: absolute;
  top: 50%;
  left: 5%;
  width: 90%;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  pointer-events: auto;
}

.buttons button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--accent-color);
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border-color);
}

.buttons button:hover {
  background: var(--background-alt);
}

/* ---------------------------
   DOTS
--------------------------- */
.dots {
  position: absolute;
  bottom: 10px;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 0;
  margin: 0;
}

.dots li {
  list-style: none;
  width: 10px;
  height: 10px;
  background-color: #fff;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
}

.dots li.active {
  width: 20px;
}

/* ---------------------------
   RESPONSIVE
--------------------------- */
@media (max-width: 1024px) {
  .slider {
    aspect-ratio: 16/9;
  }
}

@media (max-width: 768px) {
  .slider {
    aspect-ratio: 4/3;
  }

  .buttons button {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .slider {
    aspect-ratio: 1;
  }

  .buttons button {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }
}

.image-enlarger {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: zoom-out;
}

.image-enlarger img {
  max-width: 90%;
  max-height: 90%;
}

.image-enlarger span {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 24px;
  color: #fff;
  cursor: pointer;
}