* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Pretendard", sans-serif;
}

html, body {
  height: 100%;
  overflow: hidden;
}

/* ===== SLIDER ===== */
.slider {
  display: flex;
  width: 200vw;
  height: 100vh;
  transition: transform 0.8s ease;
}

/* ===== SECTION COMMON ===== */
.section {
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* ===== HERO SECTION ===== */
.hero {
  overflow: hidden;
}

.bg-video {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  color: white;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
}

.hero-content h1 {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 600;
  text-align: center;
}

/* ===== LANGUAGE TOGGLE ===== */
.lang-toggle {
  display: flex;
  gap: 12px;
}

.lang-toggle button {
  padding: 10px 18px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.6);
  background: transparent;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

.lang-toggle button:hover {
  background: white;
  color: black;
}

/* ===== SECTION 2 ===== */
.select {
  background: #f9f9f9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.select-content {
  text-align: center;
}

.select-content h2 {
  font-size: clamp(24px, 3vw, 40px);
  margin-bottom: 40px;
}

.lang-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.lang-buttons a {
  width: 180px;
  padding: 20px;
  border-radius: 16px;
  text-align: center;
  font-size: 20px;
  text-decoration: none;
  color: black;
  background: white;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  transition: 0.3s;
}

.lang-buttons a:hover {
  transform: translateY(-6px);
}

/* ===== ARROWS ===== */
.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  color: white;
  cursor: pointer;
  z-index: 5;
  user-select: none;
}

.hero .next {
  right: 30px;
}

.select .prev {
  left: 30px;
  color: #333;
}

.hero-brand {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;

  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: rgba(255, 255, 255, 0.7);

  pointer-events: none;
}