/* ============================================
   Layout - IAM Landing Page
   ============================================ */

/* ===== Body ===== */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--container-padding);
}

/* ===== Section ===== */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

/* 첫 섹션은 헤더 높이만큼 padding-top 추가 */
.section:first-of-type,
.hero {
  padding-top: calc(var(--header-height) + var(--section-padding));
}

.section-gray {
  background-color: var(--color-background);
}

.section-white {
  background-color: var(--color-white);
}

.section-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ===== Section Header ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.section-badge {
  display: inline-block;
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-tight);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

.section-primary .section-title,
.section-primary .section-subtitle {
  color: var(--color-white);
}

/* ===== Grid System ===== */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--spacing-sm));
}

.col {
  padding: 0 var(--spacing-sm);
  flex: 1 0 0;
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }

/* ===== Flexbox Utilities ===== */
.d-flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.align-items-center {
  align-items: center;
}

.align-items-start {
  align-items: flex-start;
}

.align-items-end {
  align-items: flex-end;
}

.justify-content-center {
  justify-content: center;
}

.justify-content-between {
  justify-content: space-between;
}

.justify-content-around {
  justify-content: space-around;
}

/* ===== Text Utilities ===== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* ===== Spacing Utilities ===== */
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* ===== Visibility ===== */
.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .col-6,
  .col-4,
  .col-3 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

@media (max-width: 767px) {
  .desktop-only {
    display: none;
  }
  
  .mobile-only {
    display: block;
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-base);
  }
}