/* ==========================================
  Design Tokens & Color System
========================================== */
:root {
  --color-bg-primary: #030712;
  --color-bg-secondary: #0F172A;
  --color-bg-tertiary: #1E293B;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #F8FAFC;
  --color-text-muted: #CBD5E1;
  --color-accent-teal: #2DD4BF;
  --color-accent-cyan: #38BDF8;
  --color-border-subtle: rgba(45, 212, 191, 0.3);
}

body {
  font-family: 'Pretendard GOV', sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
}

body .text-xs {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ==========================================
  Typography System (h1 ~ h6)
========================================== */
@font-face {
  font-family: 'JalnanGothic';
  src: url('https://cdn.jsdelivr.net/gh/koreafonts/fonts@39b0dbea767dfbd60e71e3f450792d64536f7998/JalnanGothic/JalnanGothic.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

.typography-h1 {
  font-family: 'JalnanGothic', sans-serif;
  font-size: 3.5rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.typography-h2 {
  font-family: 'JalnanGothic', sans-serif;
  font-size: 3rem;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.typography-h3 {
  font-size: 1.75rem;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text-primary);
}

.typography-h4 {
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text-primary);
}

.typography-h5 {
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 600;
  color: var(--color-text-primary);
}

.typography-h6 {
  font-size: 0.875rem;
  line-height: 1.5;
  font-weight: 600;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .typography-h1 {
    font-size: 2.25rem;
  }

  .typography-h2 {
    font-size: 1.875rem;
  }

  .typography-h3 {
    font-size: 1.5rem;
  }
}

/* ==========================================
  BEM Components & Common Styles
========================================== */
.glass-card {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-subtle);
}

.hero-gradient {
  background: radial-gradient(circle at 50% 50%, rgba(13, 148, 136, 0.25) 0%, transparent 80%);
}

/* BEM: portfolio-card */
.portfolio-card {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(45, 212, 191, 0.3);
  border-radius: 1.5rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  transition: all 0.3s ease;
}

.portfolio-card:hover {
  border-color: var(--color-accent-teal);
  transform: translateY(-2px);
}

.portfolio-card__header {
  margin-bottom: 1rem;
}

.portfolio-card__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-grow: 0;
}

.portfolio-card__body > :not([hidden]) ~ :not([hidden]) {
  margin-top: 0;
}

.portfolio-card__footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(51, 65, 85, 0.5);
}

/* Equal Height Grid Utilities using BEM */
.equal-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  align-items: stretch;
}

.equal-grid__item {
  display: flex;
  flex-direction: column;
}

.equal-grid__item>* {
  flex: 1;
}

/* Character Absolute Positioning wrapper without borders */
.char-wrapper {
  position: relative;
}

.char-wrapper__img {
  position: absolute;
  object-fit: contain;
  pointer-events: none;
}

@media (max-width: 1023px) {
  .skills-layout {
    grid-auto-rows: auto;
  }

  .skills-character {
    height: 12rem;
  }
}

@keyframes character-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-12px);
  }
}

section img[id^="character-"] {
  animation: character-float 4s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  section img[id^="character-"] {
    animation: none;
  }
}

.max-w-3xl {
  max-width: 60rem;
}