:root{
    --bg:#0a0b08;
    --bg-elev:#121409;
    --bg-elev-2:#181b10;
    --border:#2a2d1f;
    --border-soft:#1c1f14;
    --text:#e9e7d8;
    --text-dim:#8d9278;
    --text-dimmer:#5f634c;
    --accent:#ff5a36;
    --accent-soft:rgba(255,90,54,.14);
    --green:#9fef6b;
    --green-soft:rgba(159,239,107,.14);

    --c-college:#6b8cff;
    --c-javadsa:#ff5a36;
    --c-data:#4fd1c5;
    --c-devops:#b98cff;
    --c-backend:#ffc94d;
    --c-free:#6fcf97;
    --c-meal:#8d9278;
    --c-break:#5f634c;
    --c-wind:#7b86b3;

    --mono:'JetBrains Mono', ui-monospace, monospace;
    --sans:'Inter', -apple-system, sans-serif;
    --radius:2px;
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--sans);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
    background-image:
      linear-gradient(var(--border-soft) 1px, transparent 1px),
      linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
    background-size:48px 48px;
    background-position:-1px -1px;
  }
  ::selection{background:var(--accent);color:#0a0b08;}
  a{color:inherit;}
  button{font-family:inherit;cursor:pointer;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .wrap{max-width:1040px;margin:0 auto;padding:0 20px 80px;}

  /* ---------- MASTHEAD ---------- */
  .masthead{
    border-bottom:1px solid var(--border);
    padding:22px 20px 18px;
    margin-bottom:28px;
  }
  .masthead-inner{max-width:1040px;margin:0 auto;}
  .mh-row1{
    display:flex;justify-content:space-between;align-items:center;
    font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--text-dim);
    flex-wrap:wrap;gap:8px;
  }
  .rec{display:inline-flex;align-items:center;gap:6px;color:var(--accent);}
  .rec-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.6s infinite;}
  @keyframes pulse{0%,100%{opacity:1;}50%{opacity:.25;}}
  .mh-row2{
    margin-top:14px;
    display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:14px;
  }
  .mh-title{
    font-family:var(--mono);font-weight:800;font-size:clamp(28px,5vw,42px);
    letter-spacing:-.01em;line-height:1;text-transform:uppercase;
  }
  .mh-title span{color:var(--accent);}
  .mh-sub{font-size:13px;color:var(--text-dim);margin-top:8px;max-width:480px;}
  .countdown{
    font-family:var(--mono);text-align:right;border:1px solid var(--border);
    padding:10px 14px;background:var(--bg-elev);min-width:170px;
  }
  .countdown .num{font-size:26px;font-weight:700;color:var(--accent);}
  .countdown .lbl{font-size:10px;letter-spacing:.1em;color:var(--text-dim);text-transform:uppercase;}

  /* ---------- SECTION LABELS ---------- */
  .section{margin-bottom:34px;}
  .sec-label{
    display:flex;align-items:center;gap:10px;
    font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
    color:var(--text-dim);margin-bottom:14px;
  }
  .sec-label::before{content:'■';color:var(--accent);font-size:9px;}
  .sec-label .line{flex:1;height:1px;background:var(--border);}

  /* ---------- STREAK / HEATMAP ---------- */
  .streak-card{
    border:1px solid var(--border);background:var(--bg-elev);padding:20px;
  }
  .streak-top{
    display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center;margin-bottom:18px;
  }
  .streak-stats{display:flex;gap:28px;flex-wrap:wrap;}
  .stat .num{font-family:var(--mono);font-size:28px;font-weight:700;}
  .stat .num.flame{color:var(--accent);}
  .stat .lbl{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin-top:2px;}
  .today-ring{display:flex;align-items:center;gap:12px;}
  .ring-pct{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--green);}

  .heatmap-scroll{overflow-x:auto;padding-bottom:6px;}
.heatmap-months{position:relative;min-width:max-content;height:18px;margin-bottom:6px;font-family:var(--mono);font-size:10px;color:var(--text-dim);}
.heatmap-month{position:absolute;top:0;transform:translateX(1px);white-space:nowrap;}
.heatmap{display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,12px);gap:3px;width:max-content;}
.hm-cell{width:12px;height:12px;background:var(--bg-elev-2);border-radius:2px;}
  .hm-cell[data-lvl="2"]{background:rgba(159,239,107,.5);}
  .hm-cell[data-lvl="3"]{background:rgba(159,239,107,.75);}
  .hm-cell[data-lvl="4"]{background:var(--green);}
  .hm-cell.future{background:transparent;}
  .hm-cell.today{box-shadow:0 0 0 1px var(--accent);}
  .heatmap-legend{display:flex;align-items:center;gap:6px;margin-top:10px;font-size:10px;color:var(--text-dimmer);font-family:var(--mono);justify-content:flex-end;}
  .heatmap-legend .hm-cell{width:9px;height:9px;}

  /* ---------- WEEKLY SUBJECT TOTALS ---------- */
  .subjects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;}
  .subj-card{border:1px solid var(--border);background:var(--bg-elev);padding:14px 16px;}
  .subj-head{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:12px;margin-bottom:8px;}
  .subj-name{letter-spacing:.04em;text-transform:uppercase;font-weight:600;}
  .subj-hrs{color:var(--text-dim);font-size:11px;}
  .bar-track{height:6px;background:var(--bg-elev-2);border-radius:3px;overflow:hidden;}
  .bar-fill{height:100%;border-radius:3px;transition:width .3s ease;}

  /* ---------- DAY NAV ---------- */
  .day-nav{
    display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap;
  }
  .day-nav button{
    background:var(--bg-elev);border:1px solid var(--border);color:var(--text);
    padding:8px 12px;font-family:var(--mono);font-size:13px;
  }
  .day-nav button:hover{border-color:var(--accent);color:var(--accent);}
  .day-info{flex:1;min-width:180px;}
  .day-date{font-family:var(--mono);font-weight:700;font-size:16px;}
  .day-badge{
    display:inline-block;font-family:var(--mono);font-size:10px;letter-spacing:.08em;
    text-transform:uppercase;padding:2px 8px;border:1px solid var(--border);margin-left:8px;
    color:var(--text-dim);vertical-align:middle;
  }
  .day-badge.full{color:var(--c-javadsa);border-color:var(--c-javadsa);}
  .day-badge.ssire{color:var(--c-data);border-color:var(--c-data);}
  .day-badge.free{color:var(--c-free);border-color:var(--c-free);}
  .today-btn{background:var(--accent-soft);border:1px solid var(--accent);color:var(--accent);}

  .week-strip{display:flex;gap:6px;margin-bottom:18px;}
  .week-strip button{
    flex:1;background:var(--bg-elev);border:1px solid var(--border);color:var(--text-dim);
    font-family:var(--mono);font-size:11px;padding:8px 4px;text-align:center;
  }
  .week-strip button .d{display:block;font-size:9px;letter-spacing:.05em;}
  .week-strip button.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}
  .week-strip button.is-today::after{content:'';display:block;width:4px;height:4px;background:var(--green);border-radius:50%;margin:4px auto 0;}

  .day-progress{
    display:flex;align-items:center;gap:12px;margin-bottom:20px;
    font-family:var(--mono);font-size:12px;color:var(--text-dim);
  }
  .day-progress .bar-track{flex:1;height:8px;}
  .day-progress .bar-fill{background:var(--green);}

  /* ---------- CHECKLIST ---------- */
  .checklist{border:1px solid var(--border);background:var(--bg-elev);}
  .task{
    display:grid;
    grid-template-columns:auto 88px 4px 1fr auto;
    align-items:center;gap:14px;
    padding:13px 16px;
    border-bottom:1px solid var(--border-soft);
    transition:background .15s ease;
  }
  .task:last-child{border-bottom:none;}
  .task:hover{background:var(--bg-elev-2);}
  .task.checked{opacity:.5;}
  .task.checked .task-title{text-decoration:line-through;text-decoration-color:var(--text-dimmer);}

  .checkbox{
    width:20px;height:20px;border:1.5px solid var(--border);background:transparent;
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
    color:var(--bg);border-radius:2px;
  }
  .checkbox.on{background:var(--green);border-color:var(--green);}
  .checkbox svg{width:12px;height:12px;display:none;}
  .checkbox.on svg{display:block;}

  .task-time{font-family:var(--mono);font-size:11px;color:var(--text-dim);white-space:nowrap;}
  .task-cat-bar{width:4px;align-self:stretch;border-radius:2px;}

  .task-title{font-weight:600;font-size:14px;}
  .task-desc{font-size:12px;color:var(--text-dim);margin-top:2px;}
  .task-cat-tag{
    font-family:var(--mono);font-size:9px;letter-spacing:.06em;text-transform:uppercase;
    padding:1px 6px;border-radius:2px;display:inline-block;margin-bottom:4px;
  }
  .task-dur{font-family:var(--mono);font-size:11px;color:var(--text-dimmer);white-space:nowrap;}

  @media (max-width:560px){
    .task{grid-template-columns:auto 4px 1fr;grid-template-areas:"cb bar main";}
    .task-time{grid-column:1/-1;order:3;font-size:10px;margin-top:-4px;}
    .task-dur{display:none;}
  }

  .actions-row{display:flex;justify-content:space-between;align-items:center;margin-top:14px;gap:10px;flex-wrap:wrap;}
  .ghost-btn{
    background:transparent;border:1px solid var(--border);color:var(--text-dim);
    padding:7px 12px;font-family:var(--mono);font-size:11px;letter-spacing:.04em;
  }
  .ghost-btn:hover{border-color:var(--accent);color:var(--accent);}

  footer{
    margin-top:50px;padding-top:18px;border-top:1px solid var(--border);
    font-family:var(--mono);font-size:10px;color:var(--text-dimmer);
    display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  }
  footer a{color:var(--text-dim);}
  footer a:hover{color:var(--accent);}