*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#10B981;--primary-dim:rgba(16,185,129,.12);
  --secondary:#34D399;--accent:#F59E0B;--accent-dim:rgba(245,158,11,.12);
  --bg:#0A1A14;--surface:#0F261C;--surface2:#153327;
  --border:rgba(16,185,129,.1);--text:#F0FDF4;--text-dim:#86EFAC;
  --radius:12px;--font:'Inter',system-ui,sans-serif;
  --transition:250ms ease;--danger:#EF4444;
}
html{font-size:16px;scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;min-height:100vh}
.header{position:sticky;top:0;z-index:100;backdrop-filter:blur(16px);background:rgba(10,26,20,.8);border-bottom:1px solid var(--border)}
.header-inner{max-width:800px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem}
.logo{display:flex;align-items:center;gap:.5rem}
.logo-icon{font-size:1.25rem}
.logo h1{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-right{display:flex;gap:.5rem;align-items:center}
.btn{display:inline-flex;align-items:center;gap:.3rem;padding:.45rem .85rem;border:none;border-radius:8px;font-size:.8rem;font-weight:600;cursor:pointer;transition:all var(--transition);font-family:var(--font)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.btn-primary:hover{filter:brightness(1.15);transform:translateY(-1px)}
.btn-sm{background:var(--surface2);color:var(--text-dim);border:1px solid var(--border)}
.btn-sm:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{background:var(--danger);color:#fff;border:none}
.main{max-width:800px;margin:0 auto;padding:1.5rem}
.glass-card{background:rgba(15,38,28,.6);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;margin-bottom:1.25rem}
.section-title{font-size:.9rem;font-weight:700;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}
.section-title::before{content:'';width:4px;height:18px;background:linear-gradient(to bottom,var(--primary),var(--secondary));border-radius:2px}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-bottom:1.25rem}
.stat-card{background:rgba(15,38,28,.6);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);padding:.75rem;text-align:center}
.stat-val{font-size:1.5rem;font-weight:700;color:var(--primary)}
.stat-label{font-size:.65rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.habit-card{display:flex;align-items:center;gap:.75rem;background:rgba(15,38,28,.6);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);padding:.75rem 1rem;margin-bottom:.5rem;transition:all var(--transition)}
.habit-card:hover{border-color:var(--primary)}
.habit-check{width:32px;height:32px;border-radius:8px;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;transition:all var(--transition);flex-shrink:0;background:transparent}
.habit-check.done{border-color:var(--primary);background:var(--primary-dim)}
.habit-info{flex:1;min-width:0}
.habit-name{font-weight:600;font-size:.9rem}
.habit-streak{font-size:.7rem;color:var(--text-dim)}
.habit-streak .streak-num{color:var(--accent);font-weight:700}
.habit-actions{display:flex;gap:.3rem}
.habit-actions button{background:none;border:none;color:var(--text-dim);cursor:pointer;font-size:.8rem;padding:.25rem;transition:color var(--transition)}
.habit-actions button:hover{color:var(--primary)}
.heatmap{display:grid;grid-template-columns:repeat(52,1fr);gap:2px}
.heatmap-cell{width:100%;aspect-ratio:1;border-radius:2px;background:var(--surface2)}
.heatmap-cell.l1{background:rgba(16,185,129,.2)}.heatmap-cell.l2{background:rgba(16,185,129,.4)}
.heatmap-cell.l3{background:rgba(16,185,129,.6)}.heatmap-cell.l4{background:var(--primary)}
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:200;align-items:center;justify-content:center;padding:1rem}
.modal-overlay.show{display:flex}
.modal{max-width:400px;width:100%}
.form-group{margin-bottom:.75rem}
.form-group input[type="text"]{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:.5rem;color:var(--text);font-family:var(--font);font-size:.85rem;outline:none}
.form-group input[type="text"]:focus{border-color:var(--primary)}
.form-group input[type="color"]{width:40px;height:32px;border:none;border-radius:6px;cursor:pointer;background:none}
.ctrl-label{font-size:.7rem;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:.3rem}
.modal-actions{display:flex;gap:.5rem;justify-content:flex-end}
.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);background:var(--surface2);color:var(--text);padding:.6rem 1.25rem;border-radius:var(--radius);font-size:.8rem;font-weight:500;border:1px solid var(--primary);box-shadow:0 8px 32px rgba(0,0,0,.4);transition:transform 300ms ease;z-index:9999;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0)}
@media(max-width:600px){.stats-row{grid-template-columns:repeat(2,1fr)}.main{padding:1rem}}