/* =========================================================
   MM Lab — Document Drafts
   Design system: minimal, monochrome, ample whitespace
   ========================================================= */

:root {
  /* Surfaces */
  --bg: #fafafa;
  --surface: #ffffff;
  --surface-2: #f4f4f5;
  --surface-hover: #f9f9f9;

  /* Text */
  --fg: #0a0a0a;
  --fg-muted: #52525b;
  --fg-subtle: #a1a1aa;

  /* Borders */
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --border-focus: #18181b;

  /* Accents (단일 진한 톤) */
  --accent: #18181b;
  --accent-hover: #000000;
  --accent-fg: #fafafa;

  /* Semantic (subtle) */
  --info-bg: #f4f4f5;
  --info-border: #e4e4e7;
  --info-fg: #3f3f46;

  /* Card dot 8색 (채도 낮은 톤) */
  --dot-1: #71717a;
  --dot-2: #6b7280;
  --dot-3: #a16207;
  --dot-4: #4d7c0f;
  --dot-5: #b45309;
  --dot-6: #0e7490;
  --dot-7: #15803d;
  --dot-8: #be185d;

  /* Tokens */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);

  --container: 1080px;

  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Apple SD Gothic Neo", "Noto Sans KR", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, "Consolas",
    "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  font-size: inherit;
}

/* =========================================
   Top bar (얇은 모노톤)
   ========================================= */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.top-bar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--fg);
  font-weight: 600;
}

.brand-mark {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateY(-1px);
}

.brand-sub {
  color: var(--fg-subtle);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.top-nav {
  display: flex;
  gap: 4px;
  align-items: center;
}

.top-nav a,
.top-nav button {
  padding: 7px 12px;
  font-size: 13.5px;
  color: var(--fg-muted);
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}

.top-nav a:hover,
.top-nav button:hover {
  color: var(--fg);
  background: var(--surface-2);
}

/* =========================================
   Page container
   ========================================= */
.page {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 28px 96px;
}

.page-header {
  margin-bottom: 48px;
}

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin: 0 0 12px;
}

.page-title {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--fg);
}

.page-subtitle {
  font-size: 16px;
  color: var(--fg-muted);
  margin: 0;
  max-width: 720px;
  /* 한글 단어가 어색한 위치에서 잘리지 않도록 */
  word-break: keep-all;
  overflow-wrap: break-word;
}

.form-desc {
  word-break: keep-all;
  overflow-wrap: break-word;
}

.notice-box,
.example-text,
.card-desc {
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* =========================================
   Search
   ========================================= */
.search-row {
  margin: 32px 0 28px;
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 14.5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input::placeholder {
  color: var(--fg-subtle);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(24, 24, 27, 0.08);
}

/* =========================================
   Card grid
   ========================================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 22px 20px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  min-height: 160px;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.card.disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.card.disabled:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--border);
}

.card-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--dot-1);
  margin-bottom: 16px;
  flex-shrink: 0;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--fg);
  margin: 0 0 6px;
}

.card-desc {
  font-size: 13.5px;
  color: var(--fg-muted);
  line-height: 1.5;
  margin: 0 0 18px;
  flex-grow: 1;
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg);
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
  transition: gap 0.15s;
}

.card-action::after {
  content: "→";
  font-size: 14px;
  transition: transform 0.15s;
}

.card:hover .card-action::after {
  transform: translateX(3px);
}

.card-action.disabled {
  color: var(--fg-subtle);
  cursor: not-allowed;
}

.card-action.disabled::after {
  content: "준비 중";
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  padding: 48px 24px;
  text-align: center;
  color: var(--fg-subtle);
  font-size: 14px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
}

/* =========================================
   Form page
   ========================================= */
.form-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--fg-muted);
  margin-bottom: 28px;
  transition: color 0.15s;
}

.form-back:hover {
  color: var(--fg);
}

.form-back::before {
  content: "←";
}

.form-header {
  margin-bottom: 36px;
}

.form-title {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 8px;
  color: var(--fg);
}

.form-desc {
  font-size: 15px;
  color: var(--fg-muted);
  margin: 0;
}

/* Notice — 톤다운 */
.notice-box {
  background: var(--info-bg);
  border: 1px solid var(--info-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 13.5px;
  color: var(--info-fg);
  line-height: 1.6;
  margin: 0 0 24px;
}

/* Example banner — 진중한 톤 */
.example-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  margin: 0 0 28px;
  flex-wrap: wrap;
}

.example-text {
  flex: 1;
  min-width: 220px;
  font-size: 13.5px;
  color: var(--fg-muted);
  line-height: 1.55;
}

.example-text strong {
  color: var(--fg);
  font-weight: 600;
}

.btn-example {
  background: var(--accent);
  color: var(--accent-fg);
  border: 1px solid var(--accent);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, transform 0.05s;
}

.btn-example:hover {
  background: var(--accent-hover);
}

.btn-example:active {
  transform: translateY(1px);
}

/* Form grid */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
  margin-bottom: 28px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg);
}

.field .required {
  color: #b91c1c;
  margin-left: 2px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--fg-subtle);
}

.field input:focus,
.field textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(24, 24, 27, 0.08);
}

.field textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

.field .helper {
  font-size: 12.5px;
  color: var(--fg-subtle);
}

/* Form actions */
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  text-decoration: none;
}

.btn:hover {
  background: var(--surface-2);
  border-color: var(--fg-muted);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn:disabled,
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Status messages */
.status-message {
  margin-top: 24px;
}

.status-message:empty {
  display: none;
}

.status-message.success {
  padding: 16px 18px;
  background: var(--info-bg);
  border: 1px solid var(--info-border);
  border-left: 3px solid #16a34a;
  border-radius: var(--radius-md);
  color: var(--fg);
  font-size: 14px;
}

.status-message.error {
  padding: 14px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  color: #991b1b;
  font-size: 14px;
}

.success-actions {
  margin-top: 14px;
  display: flex;
  gap: 8px;
}

/* =========================================
   Footer (얇은 모노톤)
   ========================================= */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding: 24px 0;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--fg-subtle);
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .page {
    padding: 40px 20px 80px;
  }
  .page-title {
    font-size: 28px;
  }
  .form-title {
    font-size: 24px;
  }
}

@media (max-width: 560px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .top-bar-inner {
    padding: 12px 18px;
  }
  .top-nav {
    gap: 0;
  }
}