/* main.css - Base + Layout mobile-first */
:root{
  --bg:#f6f7f9;
  --surface:#ffffff;
  --surface-2:#f0f2f5;
  --text:#0f172a;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --accent:#14b8a6;         /* tosca default */
  --accent-dark:#0f8f83;
  --accent-soft:#14b8a614;
  --primary:#2563eb;
  --danger:#dc2626;
  --success:#16a34a;
  --warning:#f59e0b;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 1px rgba(15,23,42,.04);
  --shadow-md:0 4px 12px rgba(15,23,42,.08);
  --radius:14px;
  --radius-sm:10px;
  --nav-h:70px;
  --container:500px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}

.app-shell{
  max-width:var(--container);
  margin:0 auto;
  background:var(--bg);
  min-height:100vh;
  position:relative;
  padding-bottom:0;
}

.content{padding:16px}
.pb-nav{padding-bottom:calc(var(--nav-h) + 32px)}
.mt-8{margin-top:8px}
.mt-12{margin-top:12px}
.mt-16{margin-top:16px}
.text-center{text-align:center}
.text-primary{color:var(--primary)!important}
.text-danger{color:var(--danger)!important}
.text-success{color:var(--success)!important}
.text-accent{color:var(--accent)!important}
.muted{color:var(--text-muted)}
.small{font-size:12.5px}
.right{text-align:right}
hr{border:none;border-top:1px solid var(--border);margin:12px 0}

/* Top Bar */
.top-bar{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 16px;background:var(--surface);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:20;
}
.top-bar.simple{padding:12px 16px}
.tb-left{display:flex;align-items:center;gap:10px}
.tb-hello{font-size:13px;color:var(--text-muted);font-weight:500}
.tb-hello b{color:var(--text)}
.tb-logo{display:inline-flex;align-items:center;gap:6px;text-decoration:none;color:var(--text)}
.tb-logo img{height:28px;width:28px;object-fit:cover;border-radius:6px}
.logo-text{font-weight:900;letter-spacing:1px;font-size:14px;background:var(--accent);color:#fff;padding:3px 8px;border-radius:6px}
.tb-right{text-align:right;font-size:12.5px;line-height:1.35;color:var(--text-muted)}
#tb-time{font-weight:600;color:var(--text)}
.tb-title{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px}
.back-btn{width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:var(--surface-2);color:var(--text);text-decoration:none;border:none;cursor:pointer}
.back-btn:hover{background:var(--border)}

/* Auth pages */
.auth-wrap{max-width:420px;margin:0 auto;padding:24px 16px 100px}
.auth-brand{text-align:center;margin:20px 0 24px}
.auth-brand.small{margin:8px 0 16px}
.auth-logo{width:64px;height:64px;border-radius:20px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:28px;box-shadow:var(--shadow-md);margin-bottom:12px}
.auth-brand h1{margin:4px 0;font-size:24px}
.auth-card{padding:20px}
.auth-card h2{margin-top:0}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:12px}
.card-title{margin:0 0 12px 0;font-size:15px;font-weight:700}

/* Summary */
.summary-card{padding:14px 16px}
.sum-row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px dashed var(--border)}
.sum-row:last-of-type{border-bottom:none}
.sum-label{font-size:13px;color:var(--text-muted);font-weight:600;letter-spacing:.3px}
.sum-value{font-size:22px;font-weight:800;letter-spacing:-.3px}
.sum-note{margin-top:6px}

/* Category grid */
.cat-card{padding:16px}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.cat-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 6px;text-align:center;text-decoration:none;color:var(--text);display:flex;flex-direction:column;align-items:center;gap:6px;box-shadow:var(--shadow-sm);transition:transform .15s ease}
.cat-item:active{transform:scale(.96)}
.cat-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px}
.cat-label{font-size:11.5px;font-weight:600;line-height:1.2}
@media (max-width:340px){.cat-grid{grid-template-columns:repeat(3,1fr)}}