@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap');

/* ─── Reset & base ─────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d0d;
  --bg1: #141414;
  --bg2: #1a1a1a;
  --bg3: #222222;
  --border: #2a2a2a;
  --border2: #333333;
  --text: #d4d4d4;
  --dim: #555555;
  --dim2: #777777;
  --cyan: #00d4aa;
  --cyan-dim: #00d4aa33;
  --green: #7ec96c;
  --green-dim: #7ec96c22;
  --yellow: #e5c07b;
  --yellow-dim: #e5c07b22;
  --red: #e06c75;
  --blue: #61afef;
  --priority: #e5c07b;
  --font: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; line-height: 1.6; -webkit-font-smoothing: antialiased; }

body { min-height: 100vh; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

button { font-family: var(--font); font-size: 13px; cursor: pointer; background: none; border: none; color: var(--text); }
button:disabled { cursor: default; opacity: 0.5; }

.dim { color: var(--dim2); }

/* ─── App shell ────────────────────────────────────────────────────────────── */

.app { min-height: 100vh; display: flex; flex-direction: column; }

/* ─── Boot ─────────────────────────────────────────────────────────────────── */

.boot {
  display: flex; align-items: center; justify-content: center;
  height: 100vh; font-size: 24px; color: var(--cyan);
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.blink { animation: blink 1s step-start infinite; }

/* ─── Header ────────────────────────────────────────────────────────────────── */

.header {
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg1);
  position: sticky; top: 0; z-index: 10;
}

.header-logo { font-size: 14px; font-weight: 700; color: var(--cyan); letter-spacing: 0.02em; }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-user { font-size: 12px; }

.btn-ghost {
  font-size: 12px; color: var(--dim2); border: 1px solid var(--border2);
  padding: 4px 10px; border-radius: 2px; transition: all 0.15s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--dim2); }

/* ─── Login ─────────────────────────────────────────────────────────────────── */

.login {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 2rem;
}

.login-card {
  border: 1px solid var(--border2); background: var(--bg1);
  padding: 2.5rem 3rem; border-radius: 4px; text-align: center; max-width: 420px; width: 100%;
}

.ascii { color: var(--cyan); font-size: 11px; line-height: 1.2; margin-bottom: 1.5rem; }

.login-title { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.login-sub { font-size: 11px; margin-bottom: 2rem; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--cyan); color: #000; font-weight: 700; font-size: 13px;
  padding: 10px 20px; border-radius: 2px; border: none; transition: opacity 0.15s; width: 100%; justify-content: center;
}
.btn-primary:hover { opacity: 0.85; }

/* ─── Main ──────────────────────────────────────────────────────────────────── */

.main { flex: 1; padding: 2rem 24px; max-width: 960px; margin: 0 auto; width: 100%; }

/* ─── Progress bar ───────────────────────────────────────────────────────────── */

.progress-block { margin-bottom: 2.5rem; }
.progress-label { display: flex; justify-content: space-between; font-size: 11px; margin-bottom: 4px; }
.progress-bar { font-size: 12px; color: var(--cyan); letter-spacing: -0.5px; overflow: hidden; }
.progress-bar.sm { font-size: 11px; }

/* ─── Phase ──────────────────────────────────────────────────────────────────── */

.phase-block { margin-bottom: 2.5rem; }

.phase-header {
  display: flex; align-items: baseline; gap: 10px;
  margin-bottom: 1rem; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.phase-label { font-weight: 700; }
.phase-title { font-weight: 500; }
.phase-months { font-size: 11px; margin-left: auto; }

.phase-cyan .phase-label { color: var(--cyan); }
.phase-green .phase-label { color: var(--green); }
.phase-yellow .phase-label { color: var(--yellow); }

/* ─── Subject grid ───────────────────────────────────────────────────────────── */

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}

/* ─── Subject card ───────────────────────────────────────────────────────────── */

.subject-card {
  text-align: left; border: 1px solid var(--border);
  background: var(--bg1); padding: 14px 16px; border-radius: 2px;
  transition: border-color 0.15s, background 0.15s;
  display: flex; flex-direction: column; gap: 5px; cursor: pointer;
}
.subject-card:hover { border-color: var(--border2); background: var(--bg2); }
.card-priority { border-color: #3a3020; }
.card-priority:hover { border-color: var(--yellow); }

.card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.card-name { font-size: 13px; font-weight: 700; color: var(--text); line-height: 1.3; }
.card-weeks { font-size: 11px; flex-shrink: 0; }
.card-book { font-size: 11px; line-height: 1.4; }
.card-parallel { font-size: 10px; }

.card-bar { font-size: 11px; margin-top: 4px; letter-spacing: -0.5px; }
.bar-fill { color: var(--cyan); }
.bar-pct { font-size: 10px; }

/* ─── Tags ────────────────────────────────────────────────────────────────────── */

.tag { font-size: 10px; padding: 1px 6px; border-radius: 2px; display: inline-block; font-weight: 500; }
.tag-active { background: var(--cyan-dim); color: var(--cyan); border: 1px solid #00d4aa44; }
.tag-career { background: var(--yellow-dim); color: var(--yellow); border: 1px solid #e5c07b44; }
.tag-video { margin-left: 6px; }
.tag-recommended { background: var(--green-dim); color: var(--green); border: 1px solid #7ec96c44; }
.tag-optional { background: var(--bg3); color: var(--dim2); border: 1px solid var(--border2); }
.tag-as-needed { background: var(--bg3); color: var(--dim2); border: 1px solid var(--border2); }

/* ─── Detail view ─────────────────────────────────────────────────────────────── */

.detail { max-width: 700px; }

.back-btn {
  font-size: 12px; margin-bottom: 1.5rem; display: inline-block;
  transition: color 0.15s; padding: 0;
}
.back-btn:hover { color: var(--text); }

.detail-header { display: flex; align-items: center; gap: 10px; margin-bottom: 0.75rem; flex-wrap: wrap; }
.detail-title { font-size: 20px; font-weight: 700; color: var(--text); }
.priority-star { color: var(--yellow); }

.detail-meta { font-size: 12px; margin-bottom: 5px; line-height: 1.5; }
.detail-note {
  font-size: 12px; color: var(--cyan); border-left: 2px solid var(--cyan);
  padding-left: 10px; margin: 12px 0; line-height: 1.6;
}

.detail-progress { margin: 16px 0; }
.detail-progress .dim { font-size: 11px; display: block; margin-bottom: 4px; }

/* ─── Tabs ────────────────────────────────────────────────────────────────────── */

.tabs { display: flex; gap: 4px; margin: 1.25rem 0 1rem; border-bottom: 1px solid var(--border); padding-bottom: 8px; flex-wrap: wrap; }

.tab { font-size: 12px; color: var(--dim2); padding: 4px 10px; border: 1px solid transparent; border-radius: 2px; transition: all 0.12s; }
.tab:hover { color: var(--text); }
.tab-active { color: var(--cyan); border-color: var(--border2); background: var(--bg2); }

/* ─── Checklist ────────────────────────────────────────────────────────────────── */

.checklist { list-style: none; display: flex; flex-direction: column; gap: 6px; }

.check-item { display: flex; align-items: flex-start; gap: 10px; }

.check-box {
  font-size: 13px; font-weight: 700; flex-shrink: 0;
  padding: 0; color: var(--dim2); transition: color 0.12s; line-height: 1.6; font-family: var(--font);
}
.check-box:not(:disabled):hover { color: var(--cyan); }
.check-done .check-box { color: var(--cyan); }

.check-text { font-size: 13px; line-height: 1.6; }
.check-done .check-text { color: var(--dim2); text-decoration: line-through; text-decoration-color: var(--dim); }

/* ─── Responsive ────────────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  .main { padding: 1.25rem 16px; }
  .header { padding: 10px 16px; }
  .login-card { padding: 2rem 1.5rem; }
  .subject-grid { grid-template-columns: 1fr; }
  .progress-bar { font-size: 10px; }
  .detail-title { font-size: 16px; }
  .tabs { gap: 2px; }
  .tab { font-size: 11px; padding: 3px 7px; }
}

@media (max-width: 400px) {
  html { font-size: 13px; }
  .ascii { font-size: 9px; }
}

/* ─── Scrollbar ─────────────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--dim); }

/* ─── Selection ─────────────────────────────────────────────────────────────────── */

::selection { background: var(--cyan-dim); color: var(--cyan); }