/* Progress summary */
  .progress-summary {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 20px;
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
  }
  .progress-cell { border-left: 2px solid var(--border); padding-left: 16px; }
  .progress-cell:first-child { border-left: none; padding-left: 0; }
  .progress-cell-label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    margin-bottom: 4px;
    text-transform: uppercase;
  }
  .progress-cell-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-mono);
    margin-bottom: 2px;
  }
  .progress-cell-sub { font-size: 12px; color: var(--text-secondary); }

  /* Today card - the star */
  .today-card {
    background: linear-gradient(135deg, var(--bg-elev), #141414);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-xl);
    padding: 28px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
  }
  .today-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%);
    pointer-events: none;
  }
  .today-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 12px;
    letter-spacing: 0.06em;
    position: relative;
    z-index: 1;
  }
  .today-day-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
  }
  .today-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
  }
  .today-meta {
    display: flex;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
  }
  .today-meta-item { display: flex; align-items: center; gap: 4px; }
  .today-keywords {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
  }
  .keyword-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    background: var(--bg-input);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid var(--border);
  }
  .today-cta {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    z-index: 1;
  }
  .today-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }
  .today-cta.completed {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(163, 217, 192, 0.3);
  }
  .today-cta.completed:hover { background: rgba(163, 217, 192, 0.16); }

  /* Section headings */
  .section {
    margin-bottom: 28px;
  }
  .section-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 12px;
    padding: 0 4px;
  }
  .section-title {
    display: flex;
    align-items: baseline;
    gap: 10px;
  }
  .section-marker {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.08em;
  }
  .section-name {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.01em;
  }
  .section-sub {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
  }

  /* Week grid */
  .week-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
  }
  .week-day {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    min-height: 84px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .week-day:hover:not(.locked) {
    border-color: var(--border-strong);
    background: var(--bg-hover);
  }
  .week-day.today {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--bg-elev), var(--accent-glow));
    box-shadow: 0 0 0 1px var(--accent);
  }
  .week-day.done {
    background: var(--success-bg);
    border-color: rgba(163, 217, 192, 0.3);
  }
  .week-day.locked {
    opacity: 0.4;
    cursor: not-allowed;
  }
  .wd-num {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 0.06em;
  }
  .week-day.today .wd-num { color: var(--accent); }
  .week-day.done .wd-num { color: var(--success); }
  .wd-icon {
    font-size: 18px;
    margin: 4px 0;
  }
  .wd-title {
    font-size: 10px;
    color: var(--text-secondary);
    line-height: 1.3;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
  .week-day.done .wd-title { color: var(--success); font-weight: 500; }

  /* Month roadmap */
  .month-list { display: flex; flex-direction: column; gap: 10px; }
  .week-row {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.15s;
  }
  .week-row.current {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--bg-elev), var(--accent-glow));
  }
  .week-row.done { opacity: 0.75; }
  .week-badge {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    background: var(--bg-input);
    padding: 4px 10px;
    border-radius: 4px;
    flex-shrink: 0;
  }
  .week-row.current .week-badge { color: var(--accent); background: var(--accent-glow); }
  .week-row.done .week-badge { color: var(--success); background: var(--success-bg); }
  .week-info { flex: 1; }
  .week-name { font-size: 14px; color: var(--text-primary); font-weight: 500; margin-bottom: 2px; }
  .week-goal { font-size: 12px; color: var(--text-secondary); }
  .week-progress {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
  }
  .week-progress-bar {
    width: 60px;
    height: 3px;
    background: var(--bg-input);
    border-radius: 2px;
    margin-top: 4px;
    overflow: hidden;
  }
  .week-progress-bar-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.4s ease;
  }

  /* Next language choice */
  .next-langs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .lang-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    cursor: pointer;
    transition: all 0.15s;
    position: relative;
  }
  .lang-card:hover:not(.locked) {
    border-color: var(--accent);
    background: var(--bg-hover);
  }
  .lang-card.locked {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.5);
  }
  .lang-card.locked::after {
    content: '🔒 C언어 완료 후 잠금 해제';
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
  }
  .lang-icon { font-size: 24px; margin-bottom: 8px; }
  .lang-name { font-family: var(--font-display); font-size: 15px; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; letter-spacing: -0.01em; }
  .lang-duration { font-family: var(--font-mono); font-size: 11px; color: var(--accent); margin-bottom: 8px; }
  .lang-reason { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }