:root{--font-sans:'Inter',-apple-system,sans-serif;--radius:12px;--transition:0.2s ease}
[data-theme="dark"]{--bg:#0F0F1A;--bg-card:rgba(26,26,46,0.95);--bg-input:rgba(99,102,241,0.05);--border:rgba(99,102,241,0.12);--text:#E8E4F0;--text2:#A0A0C0;--text3:#6060A0;--primary:#6366F1;--gradient:linear-gradient(135deg,#6366F1,#8B5CF6)}
*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh}
.app{max-width:680px;margin:0 auto}.header{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.header h1{font-size:1rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.week-label{font-size:.78rem;color:var(--text2)}
.btn{font-family:var(--font-sans);font-size:.82rem;font-weight:500;padding:8px 16px;border-radius:8px;border:none;cursor:pointer;transition:all var(--transition)}
.btn-primary{background:var(--gradient);color:#fff}.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text2)}.btn-ghost:hover{background:var(--bg-input)}
.main{padding:24px;display:flex;flex-direction:column;gap:14px}
.section h3{font-size:.82rem;font-weight:600;margin-bottom:6px;color:var(--text2)}
textarea{width:100%;padding:10px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:8px;font-family:var(--font-sans);font-size:.82rem;outline:none;resize:vertical}
textarea:focus{border-color:var(--primary)}
.mood-row{display:flex;gap:8px}.mood{font-size:1.4rem;background:none;border:2px solid var(--border);border-radius:50%;width:40px;height:40px;cursor:pointer;transition:all var(--transition)}
.mood.active{border-color:var(--primary);background:var(--bg-input);transform:scale(1.15)}
.actions{display:flex;gap:8px}
.history h3{font-size:.85rem;font-weight:600;color:var(--text2);margin-bottom:8px}
.h-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px;margin-bottom:8px;font-size:.8rem;cursor:pointer;transition:all var(--transition)}
.h-card:hover{border-color:var(--primary)}
.h-card .h-head{display:flex;justify-content:space-between;margin-bottom:4px;font-weight:600}
.h-card .h-preview{color:var(--text2);font-size:.75rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}