:root {
  --bg: #07080c;
  --bg-elev: rgba(22, 26, 36, 0.55);
  --bg-elev-solid: #161a24;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.2);
  --text: #f0f2f7;
  --text-dim: #8a92a3;
  --accent: #8b7cff;
  --accent-2: #5ce1e6;
  --danger: #ff6b8a;
  --radius: 18px;
  --radius-sm: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafbfd;
    --bg-elev: rgba(255, 255, 255, 0.7);
    --bg-elev-solid: #ffffff;
    --border: rgba(15, 18, 30, 0.08);
    --border-hover: rgba(15, 18, 30, 0.18);
    --text: #14171f;
    --text-dim: #6b7280;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard Variable", "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Inter", "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* === Aurora background === */
body::before {
  content: "";
  position: fixed;
  inset: -20vh -10vw auto -10vw;
  height: 90vh;
  background:
    radial-gradient(50% 60% at 20% 30%, rgba(139, 124, 255, 0.35) 0%, transparent 60%),
    radial-gradient(40% 50% at 80% 25%, rgba(92, 225, 230, 0.28) 0%, transparent 65%),
    radial-gradient(45% 55% at 50% 70%, rgba(255, 122, 184, 0.18) 0%, transparent 60%);
  filter: blur(40px);
  z-index: -2;
  pointer-events: none;
  animation: aurora-drift 22s ease-in-out infinite alternate;
}

@media (prefers-color-scheme: light) {
  body::before {
    opacity: 0.55;
  }
}

@keyframes aurora-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(-3%, 2%, 0) scale(1.04); }
  100% { transform: translate3d(3%, -2%, 0) scale(1.02); }
}

/* Grain / noise overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
  mix-blend-mode: overlay;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* === Header === */
.site-header {
  padding: 80px 0 36px;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  padding: 0;
  box-shadow: none;
  font-weight: normal;
  transition: all 0.18s ease;
}

.icon-btn:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: var(--bg-elev);
  transform: none;
  box-shadow: none;
}

body.edit-mode .icon-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  border-color: transparent;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  font-size: 38px;
  filter: drop-shadow(0 2px 12px rgba(139, 124, 255, 0.45));
}

.brand h1 {
  font-size: 34px;
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.035em;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-dim) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  letter-spacing: 0.02em;
}

.subtitle::before {
  content: "// ";
  opacity: 0.5;
}

/* === Grid === */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 24px 0 80px;
}

/* === Card === */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--bg-elev);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
              border-color 0.25s ease,
              box-shadow 0.25s ease;
  --card-c1: var(--accent);
  --card-c2: var(--accent-2);
}

/* Card top accent line (gradient unique per card via --card-c1/c2) */
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--card-c1), var(--card-c2));
  opacity: 0.7;
  transition: opacity 0.25s ease, height 0.25s ease;
}

/* Soft radial glow on hover */
.card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(120% 80% at 20% 0%, color-mix(in srgb, var(--card-c1) 22%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: -1;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 20px 50px -20px color-mix(in srgb, var(--card-c1) 35%, transparent),
    0 8px 24px -12px rgba(0, 0, 0, 0.4);
}

.card:hover::before {
  opacity: 1;
  height: 3px;
}

.card:hover::after {
  opacity: 1;
}

.card-icon {
  font-size: 32px;
  line-height: 1;
  filter: drop-shadow(0 4px 16px color-mix(in srgb, var(--card-c1) 50%, transparent));
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin: 4px 0 0;
  letter-spacing: -0.02em;
}

.card-desc {
  font-size: 13.5px;
  color: var(--text-dim);
  margin: 0;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.55;
}

.card-author {
  font-size: 11.5px;
  color: var(--text-dim);
  margin-top: 4px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-author::before {
  content: "by";
  opacity: 0.55;
}

/* Pin badge (top-left) */
.card-pin {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 14px;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(255, 200, 0, 0.5));
  z-index: 2;
}

.card.pinned {
  border-color: color-mix(in srgb, #ffd700 40%, var(--border));
}

.card.pinned::before {
  opacity: 1;
  height: 3px;
}

/* External arrow */
.card-arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.card:hover .card-arrow {
  opacity: 1;
  transform: translate(0, 0);
  color: var(--text);
}

.state {
  padding: 80px 0;
  text-align: center;
  color: var(--text-dim);
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 13px;
}

.hidden { display: none !important; }

.link-subtle {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 12.5px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.link-subtle:hover {
  color: var(--text);
}

.site-footer {
  padding: 24px 0 56px;
  text-align: center;
}

/* === Admin styles === */
.admin-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 28px;
}

.admin-wrap h1 {
  margin: 0 0 28px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.panel {
  background: var(--bg-elev);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 18px;
  box-shadow: 0 8px 32px -16px rgba(0, 0, 0, 0.4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.field label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.field input,
.field textarea {
  background: var(--bg-elev-solid);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.field textarea {
  resize: vertical;
  min-height: 64px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.row .field { flex: 1; margin-bottom: 0; }
.row + .field, .row + .row { margin-top: 16px; }

/* === Emoji palette === */
.emoji-palette {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
  margin: -4px 0 16px;
  padding: 10px;
  background: var(--bg-elev-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

@media (max-width: 600px) {
  .emoji-palette { grid-template-columns: repeat(6, 1fr); }
}

.emoji-btn {
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 0;
  font-size: 20px;
  cursor: pointer;
  border-radius: 8px;
  box-shadow: none;
  font-weight: normal;
  letter-spacing: 0;
  transition: background 0.12s ease, transform 0.12s ease, border-color 0.12s ease;
}

.emoji-btn:hover {
  background: var(--bg-elev);
  transform: scale(1.15);
  box-shadow: none;
}

.emoji-btn.selected {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border-color: var(--accent);
}

button {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--accent-2)));
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, box-shadow 0.2s ease;
  font-family: inherit;
  letter-spacing: -0.01em;
  box-shadow: 0 4px 16px -6px color-mix(in srgb, var(--accent) 50%, transparent);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px -6px color-mix(in srgb, var(--accent) 60%, transparent);
}
button:active { transform: translateY(0); }

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
button.secondary:hover {
  border-color: var(--border-hover);
  background: var(--bg-elev-solid);
}
button.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--border);
  box-shadow: none;
}
button.danger:hover {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}
button.small {
  padding: 7px 13px;
  font-size: 12.5px;
  font-weight: 500;
}

.admin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg-elev-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease;
}

.admin-list li:hover { border-color: var(--border-hover); }
.admin-list .li-icon { font-size: 24px; }
.admin-list .li-main { flex: 1; min-width: 0; }
.admin-list .li-title {
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pin-tag {
  font-size: 10.5px;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 15%, transparent);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.drag-handle {
  color: var(--text-dim);
  cursor: grab;
  user-select: none;
  font-size: 14px;
  letter-spacing: -2px;
  padding: 0 2px;
  opacity: 0.5;
  transition: opacity 0.15s ease;
}

.drag-handle:hover { opacity: 1; }
.drag-handle:active { cursor: grabbing; }

.drag-ghost {
  opacity: 0.4;
  background: var(--bg-elev);
}

.admin-list .pinned-row {
  border-color: color-mix(in srgb, var(--accent-2) 35%, var(--border));
  background: color-mix(in srgb, var(--accent-2) 5%, var(--bg-elev-solid));
}
.admin-list .li-url {
  font-size: 11.5px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
}
.admin-list .li-actions { display: flex; gap: 6px; }

.error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 10px;
}

.success {
  color: var(--accent-2);
  font-size: 13px;
  margin-top: 10px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

/* === Edit mode controls on cards === */
.card-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  display: none;
  gap: 4px;
  z-index: 3;
}

body.edit-mode .card-controls { display: flex; }
body.edit-mode .card-arrow { display: none; }

.ctrl-btn {
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  box-shadow: none;
  font-weight: normal;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, background 0.15s ease;
}

.ctrl-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(1.1);
  box-shadow: none;
}

.ctrl-btn.danger:hover {
  background: rgba(255, 100, 100, 0.85);
}

@media (prefers-color-scheme: light) {
  .ctrl-btn {
    background: rgba(255, 255, 255, 0.85);
    color: var(--text);
    border-color: rgba(0, 0, 0, 0.08);
  }
  .ctrl-btn:hover {
    background: rgba(255, 255, 255, 1);
  }
}

/* Card drag handle (edit mode) */
.card .drag-handle {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-size: 13px;
  letter-spacing: -2px;
  color: var(--text-dim);
  cursor: grab;
  user-select: none;
  display: none;
  z-index: 3;
  opacity: 0.6;
  transition: opacity 0.15s ease;
}

body.edit-mode .card .drag-handle { display: block; }
body.edit-mode .card .drag-handle:hover { opacity: 1; }
body.edit-mode .card .drag-handle:active { cursor: grabbing; }

/* Add card */
.add-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 180px;
  background: transparent;
  border: 1.5px dashed var(--border-hover);
  border-radius: var(--radius);
  color: var(--text-dim);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: all 0.2s ease;
  box-shadow: none;
}

.add-card:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  transform: none;
  box-shadow: none;
}

.add-card .add-icon {
  font-size: 32px;
  font-weight: 300;
  line-height: 1;
}

.drag-ghost {
  opacity: 0.4;
}

.hint {
  font-size: 12px;
  margin-top: 12px;
  opacity: 0.7;
}

/* === Modal === */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
  animation: modal-fade 0.2s ease;
}

@keyframes modal-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-panel {
  background: var(--bg-elev-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: modal-pop 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.modal-panel.small { max-width: 380px; }

@keyframes modal-pop {
  from { transform: translateY(10px) scale(0.98); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-panel h3 {
  margin: 0 0 18px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-panel input[type="password"] {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.modal-panel input[type="password"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

/* Fade-in animation for cards */
.card {
  animation: card-in 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}