:root {
  color-scheme: light;
  --bg-color: #f5f6f8;
  --surface-color: #ffffff;
  --surface-border: rgba(15, 23, 42, 0.05);
  --surface-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --surface-shadow-hover: 0 16px 32px rgba(15, 23, 42, 0.12);
  --text-color: #111827;
  --muted-color: #6b7280;
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
  --header-bg: rgba(255, 255, 255, 0.85);
  --header-border: rgba(148, 163, 184, 0.25);
  --input-bg: #ffffff;
  --input-border: #d1d5db;
  --input-text: #0f172a;
  --overlay-color: rgba(15, 23, 42, 0.35);
  --card-thumb-bg: #f8fafc;
  --button-text: #ffffff;
}

.theme-dark {
  color-scheme: dark;
  --bg-color: #0f172a;
  --surface-color: #14213d;
  --surface-border: rgba(255, 255, 255, 0.08);
  --surface-shadow: 0 12px 32px rgba(8, 47, 73, 0.45);
  --surface-shadow-hover: 0 18px 36px rgba(8, 47, 73, 0.5);
  --text-color: #e2e8f0;
  --muted-color: #94a3b8;
  --accent-color: #3b82f6;
  --accent-hover: #2563eb;
  --header-bg: rgba(15, 23, 42, 0.85);
  --header-border: rgba(51, 65, 85, 0.6);
  --input-bg: #1e293b;
  --input-border: #334155;
  --input-text: #e2e8f0;
  --overlay-color: rgba(15, 23, 42, 0.6);
  --card-thumb-bg: #1e293b;
  --button-text: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Pretendard", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

body.menu-open {
  overflow: hidden;
}

main {
  padding: 88px 24px 64px;
  max-width: 1080px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin: 0 0 32px;
  font-size: clamp(1.8rem, 2vw + 1rem, 2.4rem);
  letter-spacing: -0.02em;
}

.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  backdrop-filter: blur(16px);
}

.icon-button {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text-color);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.icon-button:hover {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent-color);
}

.search-panel {
  position: relative;
  width: 100%;
}

.search-panel input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--input-text);
  font-size: 0.98rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.search-panel input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.side-menu {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  padding: 24px 20px;
  background: var(--surface-color);
  border-right: 1px solid var(--surface-border);
  box-shadow: var(--surface-shadow);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.side-menu.open {
  transform: translateX(0);
}

.menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-weight: 700;
  font-size: 1.05rem;
}

.menu-link {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.menu-link:hover {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent-color);
  transform: translateX(4px);
}

.menu-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-color);
  z-index: 110;
}

.menu-overlay[hidden] {
  display: none;
}

.icon-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.icon-grid.status {
  display: block;
  text-align: center;
  font-size: 1rem;
  color: var(--muted-color);
}

.status-message {
  margin: 32px 0;
  color: var(--muted-color);
}

.icon-card {
  background: var(--surface-color);
  border-radius: 18px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--surface-shadow);
  border: 1px solid var(--surface-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.icon-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--surface-shadow-hover);
  border-color: rgba(37, 99, 235, 0.18);
}

.icon-thumb {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 14px;
  background: var(--card-thumb-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--surface-border);
}

.icon-thumb img {
  width: 72%;
  height: 72%;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(15, 23, 42, 0.15));
}

.theme-dark .icon-thumb img {
  filter: drop-shadow(0 6px 12px rgba(15, 23, 42, 0.35));
}

.icon-name {
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.3;
}

.icon-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--muted-color);
}

.icon-actions {
  display: flex;
  gap: 10px;
}

.icon-actions button {
  flex: 1;
  background: var(--accent-color);
  color: var(--button-text);
  border: 0;
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s ease, transform 0.2s ease;
}

.icon-actions button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.icon-actions button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.count {
  color: var(--muted-color);
  font-size: 0.9rem;
  font-weight: 500;
}

#pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 36px auto 0;
  max-width: 720px;
}

.page-btn {
  background: rgba(148, 163, 184, 0.25);
  color: var(--text-color);
  border: 0;
  min-width: 40px;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-btn.ellipsis {
  background: transparent;
  color: var(--muted-color);
  cursor: default;
}

.page-btn:hover:not(.active):not(:disabled) {
  background: rgba(37, 99, 235, 0.18);
  color: var(--accent-color);
}

.page-btn.active {
  background: var(--accent-color);
  color: var(--button-text);
}

.page-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.about-page main {
  padding-top: 96px;
  max-width: 720px;
}

.about-page .top-bar {
  grid-template-columns: auto;
  justify-content: flex-start;
  gap: 0;
}

.about-container {
  display: grid;
  gap: 20px;
  background: var(--surface-color);
  border-radius: 18px;
  padding: 28px 32px;
  box-shadow: var(--surface-shadow);
  border: 1px solid var(--surface-border);
}

.logo-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 10px 14px;
  border-radius: 12px;
  transition: background 0.2s ease, color 0.2s ease;
}

.logo-link:hover {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent-color);
}

@media (max-width: 768px) {
  .top-bar {
    padding: 12px 18px;
    gap: 12px;
  }

  main {
    padding: 84px 18px 56px;
  }

  .icon-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

@media (max-width: 540px) {
  .icon-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .icon-thumb img {
    width: 82%;
    height: 82%;
  }
}