:root {
  color-scheme: dark light;
  --bg: #0a0a0a;
  --fg: #f5f5f5;
  --muted: #a0a0a0;
  --accent: #4f9eff;
  --surface: #161616;
  --border: #2a2a2a;
  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
  --safe-left: env(safe-area-inset-left);
  --safe-right: env(safe-area-inset-right);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

body {
  min-height: 100dvh;
  padding:
    max(16px, var(--safe-top))
    max(16px, var(--safe-right))
    max(16px, var(--safe-bottom))
    max(16px, var(--safe-left));
}

main {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 24px;
}

.portal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.portal-header .title-block {
  min-width: 0;
}

.portal-header h1 {
  font-size: 32px;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.lang-select {
  font: inherit;
  color: var(--fg);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 26px 6px 12px;
  font-size: 12px;
  font-weight: 600;
  min-height: 32px;
  cursor: pointer;
  flex-shrink: 0;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none' stroke='%23a0a0a0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 5l3 3 3-3'/%3E%3C/svg%3E");
  background-position: right 8px center;
  background-repeat: no-repeat;
  background-size: 10px;
}

.lang-select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.tab-bar {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
}

.tab {
  flex: 1;
  background: transparent;
  border: none;
  border-radius: 999px;
  color: var(--muted);
  padding: 8px 14px;
  min-height: 38px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.tab[aria-selected="true"] {
  background: var(--accent);
  color: #fff;
}

@media (hover: hover) {
  .tab:hover:not([aria-selected="true"]) {
    color: var(--fg);
    background: transparent;
  }
}

.tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tab-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* hidden 속성이 .tab-panel의 display: flex에 가려지지 않도록 명시. */
.tab-panel[hidden] {
  display: none;
}

.sort-bar {
  display: flex;
  justify-content: flex-end;
}

.sort-select {
  font: inherit;
  color: var(--fg);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 28px 6px 12px;
  font-size: 13px;
  min-height: 36px;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none' stroke='%23a0a0a0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 5l3 3 3-3'/%3E%3C/svg%3E");
  background-position: right 10px center;
  background-repeat: no-repeat;
  background-size: 10px;
}

.sort-select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.load-sentinel {
  height: 1px;
  margin: 4px 0 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.game-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.game-empty {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 16px;
  padding: 20px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.game-card-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px 18px;
  transition: border-color 0.15s ease, transform 0.1s ease;
}

.game-card-wrap:focus-within {
  border-color: var(--accent);
}

.game-card-wrap:active {
  transform: scale(0.99);
}

.game-card-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: inherit;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  border-radius: 8px;
}

.game-card-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.game-card-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.005em;
}

.game-card-desc {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.game-card-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  min-height: 40px;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: inherit;
}

.like-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.like-btn[aria-pressed="true"] {
  background: transparent;
  border-color: #ff5577;
  color: inherit;
}

.like-btn[aria-pressed="true"] .like-icon {
  color: #ff5577;
}

.like-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: block;
  fill: currentColor;
  color: var(--muted);
  transition: color 0.15s ease;
}

@media (hover: hover) {
  .like-btn:hover:not(:disabled) {
    background: transparent;
    border-color: var(--accent);
    color: inherit;
  }
}

.play-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  padding-right: 4px;
}

.play-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: block;
  fill: currentColor;
}

button {
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 18px;
  min-height: 44px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background 0.15s ease, border-color 0.15s ease;
}

button:active,
button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

@media (hover: hover) {
  button:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
  }
}

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.portal-footer {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

.portal-footer nav {
  display: flex;
  gap: 10px;
  align-items: center;
}

.portal-footer a {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
}

@media (hover: hover) {
  .portal-footer a:hover {
    color: var(--fg);
  }
}

.portal-footer .copyright {
  margin: 0;
}

/* 법적 페이지 (privacy.html, terms.html) */
main.legal {
  gap: 0;
  font-size: 15px;
  line-height: 1.6;
}

main.legal h1 {
  font-size: 26px;
  margin: 8px 0 4px;
  letter-spacing: -0.02em;
}

main.legal h2 {
  font-size: 17px;
  margin: 24px 0 8px;
  font-weight: 700;
}

main.legal p {
  margin: 0 0 12px;
}

main.legal .legal-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.legal-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.back-link {
  display: inline-block;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  padding: 8px 0;
}

@media (hover: hover) {
  .back-link:hover {
    color: var(--fg);
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --fg: #0a0a0a;
    --muted: #555;
    --surface: #f5f5f5;
    --border: #e0e0e0;
  }
}