:root {
  --bg: #FDF8F0;
  --bg-card: #FFFFFF;
  --text: #2D2A24;
  --text-sec: #7A7368;
  --text-muted: #B8B0A4;
  --primary: #F59E0B;
  --primary-light: rgba(245,158,11,.08);
  --border: rgba(125,110,90,.08);
  --radius: 12px;
  --font-ui: 'Inter',system-ui,sans-serif;
  --font-journal: 'Lora',Georgia,serif;
  --shadow: 0 1px 4px rgba(0,0,0,0.04);
}

[data-theme="dark"] {
  --bg: #1A1814;
  --bg-card: #242018;
  --text: #D8D0C4;
  --text-sec: #A09888;
  --text-muted: #504838;
  --border: rgba(245,158,11,.04);
  --shadow: 0 1px 4px rgba(0,0,0,0.15);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font-ui);background:var(--bg);color:var(--text);min-height:100vh;transition:background .3s,color .3s}

.header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg-card);border-bottom:1px solid var(--border);box-shadow:var(--shadow);flex-wrap:wrap;gap:4px}
.header h1{font-size:.88rem;font-weight:700;color:var(--primary)}
.header-right{display:flex;gap:6px;align-items:center}
.streak{font-size:.62rem;color:var(--primary);font-weight:600}

.btn{padding:4px 10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-sec);font-family:var(--font-ui);font-size:.66rem;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:var(--primary);color:#fff;border:none;font-weight:600;width:100%}

.app{max-width:900px;margin:0 auto;padding:12px}

.layout{display:grid;grid-template-columns:1fr 260px;gap:10px;align-items:start}

/* Today */
.today{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.today h2{font-size:.72rem;font-weight:600;color:var(--text-sec);margin-bottom:8px}

.mood-bar{display:flex;gap:4px;margin-bottom:8px}
.mood{font-size:1.2rem;padding:4px;border:2px solid transparent;border-radius:8px;background:none;cursor:pointer;transition:.15s}
.mood:hover{transform:scale(1.15)}
.mood.active{border-color:var(--primary);background:var(--primary-light)}

.journal-input{width:100%;min-height:120px;border:1px solid var(--border);border-radius:8px;background:rgba(255,255,255,.02);color:var(--text);font-family:var(--font-journal);font-size:.82rem;padding:10px;line-height:1.6;resize:vertical}
.journal-input:focus{outline:none;border-color:var(--primary)}

.write-meta{display:flex;justify-content:space-between;align-items:center;margin:4px 0 8px}
.char-count{font-size:.54rem;color:var(--text-muted);font-variant-numeric:tabular-nums}
.char-count.over{color:#EF4444}
.tags-bar{display:flex;gap:3px}
.tag{font-size:.52rem;padding:1px 6px;border:1px solid var(--border);border-radius:4px;background:transparent;color:var(--text-muted);cursor:pointer;transition:.15s;font-family:var(--font-ui)}
.tag:hover,.tag.active{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* Sidebar */
.sidebar{display:flex;flex-direction:column;gap:6px}
.input{width:100%;padding:4px 8px;border:1px solid var(--border);border-radius:6px;background:var(--bg-card);color:var(--text);font-family:var(--font-ui);font-size:.68rem}
.input:focus{outline:none;border-color:var(--primary)}

/* Calendar heatmap */
.calendar{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:8px;box-shadow:var(--shadow)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px}
.cal-day{width:100%;aspect-ratio:1;border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:.42rem;cursor:pointer;transition:.15s}
.cal-day.empty{background:transparent}
.cal-day.has-entry{background:var(--primary-light)}
.cal-day:hover{outline:1px solid var(--primary)}
.cal-header{font-size:.42rem;color:var(--text-muted);text-align:center;font-weight:600}
.cal-nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.cal-nav span{font-size:.56rem;color:var(--text-sec);font-weight:500}
.cal-nav button{background:none;border:none;cursor:pointer;font-size:.6rem;color:var(--text-muted)}

/* History */
.entry-item{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:6px 8px;margin-top:3px;box-shadow:var(--shadow)}
.entry-date{font-size:.5rem;color:var(--text-muted)}
.entry-mood{font-size:.7rem}
.entry-text{font-family:var(--font-journal);font-size:.62rem;color:var(--text-sec);line-height:1.4;margin-top:2px}
.entry-tags{display:flex;gap:2px;margin-top:2px}
.entry-tag{font-size:.44rem;color:var(--primary);background:var(--primary-light);padding:0 4px;border-radius:3px}

@keyframes celebrate{0%{transform:scale(1)}50%{transform:scale(1.1)}100%{transform:scale(1)}}
.celebrating{animation:celebrate .4s ease}

@media(max-width:600px){.layout{grid-template-columns:1fr}}