/* ==========================================================================
   Main Page — Plus X / 변사범 Style
   Bold typography, massive whitespace, dramatic contrast
   ========================================================================== */

/* --------------------------------------------------------------------------
   Divider — Thin horizontal line between sections
   -------------------------------------------------------------------------- */
.divider {
  border: none;
  height: 1px;
  background: var(--color-border);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Main Hero — Full viewport, dramatic type
   -------------------------------------------------------------------------- */
.main-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100svh;
  text-align: center;
  padding: 80px var(--space-3) var(--space-8);
  position: relative;
}

/* Label above hero */
.main-hero__label {
  display: inline-block;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

/* Accent line */
.main-hero__line {
  width: 48px;
  height: 1px;
  background: var(--color-text);
  margin-bottom: var(--space-5);
}

/* Title — extra massive */
.main-hero__title {
  font-size: clamp(64px, 10vw, 120px);
  font-weight: var(--font-weight-black);
  line-height: 1.0;
  letter-spacing: -0.04em;
  max-width: 900px;
}

.main-hero__subtitle {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--color-text-sub);
  max-width: 480px;
  margin-top: var(--space-4);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1s ease 0.3s, transform 1s ease 0.3s;
}

.main-hero__subtitle.is-visible {
  opacity: 1;
  transform: none;
}

/* Scroll indicator */
.main-hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.main-hero__scroll-line {
  width: 1px;
  height: 48px;
  background: var(--color-text-muted);
  animation: scrollLine 2s ease-in-out infinite;
}

.main-hero__scroll-text {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   App Showcase — Giant number watermark + content
   -------------------------------------------------------------------------- */
.app-showcase {
  padding: 96px 0;
}

.app-showcase__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* Reverse layout */
.app-showcase__inner--reverse {
  direction: rtl;
}

.app-showcase__inner--reverse > * {
  direction: ltr;
}

/* Giant watermark number */
.app-showcase__number {
  position: absolute;
  top: 50%;
  left: var(--space-3);
  transform: translateY(-50%);
  font-size: clamp(120px, 18vw, 220px);
  font-weight: var(--font-weight-black);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--color-surface);
  z-index: 0;
  user-select: none;
  pointer-events: none;
}

.app-showcase__inner--reverse .app-showcase__number {
  left: auto;
  right: var(--space-3);
}

/* Content */
.app-showcase__content {
  position: relative;
  z-index: 1;
}

.app-showcase__name {
  font-size: clamp(48px, 6vw, 80px);
  font-weight: var(--font-weight-black);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.app-showcase__desc {
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--color-text-sub);
  line-height: var(--line-height-body);
  margin-bottom: var(--space-4);
  max-width: 380px;
}

/* Explore link — bold with arrow */
.app-showcase__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: var(--font-weight-bold);
  font-size: 15px;
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  position: relative;
}

.app-showcase__link::after {
  content: '\2192';
  font-size: 20px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.app-showcase__link:hover::after {
  transform: translateX(6px);
}

.app-showcase__link::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: calc(100% - 28px);
  height: 2px;
  background: var(--color-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.app-showcase__link:hover::before {
  transform: scaleX(1);
}

/* Visual — app icon area */
.app-showcase__visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  background: var(--color-surface);
  border-radius: 24px;
}

.app-showcase__icon {
  width: 140px;
  height: 140px;
  border-radius: 32px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
  transition: transform 0.6s var(--ease-out);
}

.app-showcase:hover .app-showcase__icon {
  transform: scale(1.08) translateY(-4px);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .main-hero {
    min-height: 85vh;
    padding-bottom: 100px;
  }

  .main-hero__scroll {
    bottom: 24px;
  }

  .app-showcase {
    padding: 64px 0;
  }

  .app-showcase__inner {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    text-align: center;
  }

  .app-showcase__inner--reverse {
    direction: ltr;
  }

  .app-showcase__number {
    position: static;
    transform: none;
    font-size: 80px;
    color: var(--color-border);
    margin-bottom: -24px;
  }

  .app-showcase__inner--reverse .app-showcase__number {
    left: auto;
    right: auto;
  }

  .app-showcase__desc {
    max-width: none;
    margin-left: auto;
    margin-right: auto;
  }

  .app-showcase__visual {
    max-width: 280px;
    margin: 0 auto;
    order: -1;
  }

  .app-showcase__icon {
    width: 100px;
    height: 100px;
    border-radius: 24px;
  }
}