*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:#f5f5f5;color:#1a1a1a;font-size:15px;line-height:1.5}
a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:960px;margin:0 auto;padding:0 1rem}
.nav{background:#1a1a1a;padding:.75rem 0;margin-bottom:1.5rem}
.nav .container{display:flex;align-items:center;gap:1.5rem}
.nav a{color:#e5e5e5;font-size:.875rem}
.nav a:hover{color:#fff;text-decoration:none}
.nav .brand{font-weight:700;font-size:1rem;color:#fff}
.nav .spacer{flex:1}

.card{background:#fff;border:1px solid #e5e5e5;border-radius:8px;padding:1.25rem;margin-bottom:1rem}
.card h3{margin:0 0 .5rem}

.btn{display:inline-block;padding:.4rem .75rem;border-radius:6px;border:1px solid #d1d5db;background:#fff;cursor:pointer;font-size:.875rem}
.btn:hover{background:#f9fafb}
.btn-primary{background:#2563eb;color:#fff;border-color:#2563eb}
.btn-primary:hover{background:#1d4ed8}
.btn-danger{color:#dc2626;border-color:#dc2626}
.btn-danger:hover{background:#fef2f2}
.btn-sm{padding:.25rem .5rem;font-size:.8rem}

.form-group{margin-bottom:1rem}
.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.25rem}
.form-group input,.form-group select{width:100%;padding:.5rem .75rem;border:1px solid #d1d5db;border-radius:6px;font-size:.875rem}

.alert{padding:.75rem 1rem;border-radius:6px;margin-bottom:1rem;font-size:.875rem}
.alert-error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.alert-ok{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}

.badge{display:inline-block;padding:.1rem .4rem;border-radius:4px;font-size:.75rem;font-weight:600}
.badge-ok{background:#dcfce7;color:#166534}
.badge-error{background:#fef2f2;color:#991b1b}
.badge-muted{background:#f3f4f6;color:#6b7280}

table{width:100%;border-collapse:collapse;font-size:.875rem}
th{text-align:left;padding:.5rem .75rem;border-bottom:2px solid #e5e5e5;font-weight:600;font-size:.8rem;color:#6b7280;text-transform:uppercase}
td{padding:.5rem .75rem;border-bottom:1px solid #f3f4f6}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
@media(max-width:640px){.grid-2,.grid-4{grid-template-columns:1fr}}

.month-nav{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem}
.month-nav .current{font-size:1.25rem;font-weight:700}

.tx-row{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0;border-bottom:1px solid #f3f4f6}
.tx-row:last-child{border-bottom:none}
.tx-merchant{font-weight:500}
.tx-amount{font-family:monospace;font-weight:600}
.tx-meta{font-size:.8rem;color:#6b7280}

.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}
.section-header h2{margin:0;font-size:1.1rem}
.count-badge{background:#e5e7eb;padding:.1rem .5rem;border-radius:10px;font-size:.8rem;font-weight:600}

.login-box{max-width:360px;margin:80px auto;padding:0 1rem}