/* Maven Pro — variable font (SIL OFL 1.1, Google Fonts), tự host tại
   app/static/fonts/maven-pro/. 1 file bao hết weight 400-700. */
@font-face {
  font-family: 'Maven Pro';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/static/fonts/maven-pro/maven-pro-vietnamese.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1,
    U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329,
    U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Maven Pro';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/static/fonts/maven-pro/maven-pro-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Nền */
  --bg: #FAF9F5; /* nền chính, kem ấm */
  --bg-subtle: #F0EEE6; /* nền phụ, sidebar, khối nhấn */
  --surface: #FFFFFF; /* thẻ, card */

  /* Chữ */
  --text: #1F1E1D; /* chữ chính */
  --text-muted: #6B6862; /* chữ phụ, caption */
  --text-faint: #9B968D; /* placeholder, metadata */

  /* Viền */
  --border: #E5E2D9;
  --border-strong: #D2CEC2;

  /* Nhấn */
  --accent: #D97757; /* cam đất — dùng RẤT tiết chế */
  --accent-hover: #C4633F;
  --accent-soft: #F5E9E3; /* nền nhạt cho badge, highlight */

  /* Trạng thái */
  --success: #4A7C59;
  --danger: #B54A3A;

  /* Chữ — Maven Pro dùng cho cả tiêu đề lẫn thân bài (tự host, xem @font-face bên dưới) */
  --font-display: 'Maven Pro', -apple-system, 'Segoe UI', sans-serif;
  --font-body: 'Maven Pro', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* Bố cục */
  --radius: 8px;
  --radius-sm: 6px;
  --max-width: 720px; /* độ rộng cột đọc */
  --space: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space);
}

a {
  color: var(--accent);
  text-decoration-color: var(--border-strong);
}

a:hover {
  color: var(--accent-hover);
  text-decoration-color: currentColor;
}

a:visited {
  color: var(--accent);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-list {
  margin-bottom: 16px;
  transition: border-color 150ms;
}

.card-list:hover {
  border-color: var(--border-strong);
}

.tag-badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-hover);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.8rem;
  text-decoration: none;
  margin-right: 4px;
}

.tag-badge:hover {
  background: var(--accent);
  color: var(--surface);
}

.meta-text {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.site-header {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space);
}

.site-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px var(--space);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.site-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav .link-btn {
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-muted);
  cursor: pointer;
}

.site-nav .link-btn:hover {
  color: var(--accent);
}

.field {
  display: block;
  margin-bottom: var(--space);
}

.field label {
  display: block;
  margin-bottom: 4px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.field input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--surface);
  color: var(--text);
}

.field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--surface);
  font-family: var(--font-body);
  font-size: 1rem;
  cursor: pointer;
  transition: background 150ms;
}

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

.error-text {
  color: var(--danger);
  margin-bottom: var(--space);
}

.field textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--surface);
  color: var(--text);
  resize: vertical;
}

.field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.phase-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.progress-bar {
  height: 6px;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 200ms ease;
}

.roadmap-week {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 16px;
}

.task-list {
  list-style: none;
  padding: 0;
  margin: 8px 0;
}

.task-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 4px 0;
}

.task-list input[type="checkbox"] {
  margin-top: 3px;
}

.roadmap-checkpoints {
  border-top: 1px dashed var(--border-strong);
  padding-top: 12px;
  margin-top: 16px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}