/* ===========================
   Bill Management System - Base Styles
   =========================== */

:root {
    --navy: #0f2540;
    --navy-dark: #081a2e;
    --teal: #0d9488;
    --orange: #f97316;
    --gray-bg: #f4f6f9;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --success: #15803d;
    --success-bg: #dcfce7;
    --warning: #b45309;
    --warning-bg: #fef3c7;
    --danger: #b91c1c;
    --danger-bg: #fee2e2;
    --info: #1d4ed8;
    --info-bg: #dbeafe;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--gray-bg);
    color: var(--text);
    line-height: 1.5;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Top bar */
.topbar {
    background: var(--navy);
    color: #fff;
    padding: 0 24px;
}
.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.3px;
}
.brand:hover { text-decoration: none; opacity: 0.9; }

.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a { color: #cbd5e1; font-weight: 500; }
.nav-links a:hover { color: #fff; text-decoration: none; }
.user-chip {
    background: rgba(255,255,255,0.08);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #e2e8f0;
}
.btn-link-danger {
    color: #fca5a5 !important;
}

/* Page wrap */
.page-wrap {
    max-width: 1100px;
    margin: 30px auto;
    padding: 0 24px;
}

.footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 24px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}
.alert-success { background: var(--success-bg); color: var(--success); }
.alert-error   { background: var(--danger-bg);  color: var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); }
.alert-info    { background: var(--info-bg);    color: var(--info); }

/* Auth pages (login/register) */
.auth-wrapper {
    max-width: 420px;
    margin: 60px auto;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 36px 32px;
    box-shadow: 0 4px 18px rgba(15, 37, 64, 0.06);
}
.auth-wrapper h1 {
    font-size: 1.4rem;
    margin: 0 0 6px;
    color: var(--navy);
}
.auth-wrapper .subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
}
.auth-footer {
    margin-top: 18px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Forms */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 6px;
    color: var(--navy);
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    background: #fff;
    color: var(--text);
}
.form-control:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
}
.form-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 4px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
}
.btn-primary { background: var(--teal); color: #fff; width: 100%; }
.btn-primary:hover { background: #0b7a70; text-decoration: none; }
.btn-secondary { background: var(--navy); color: #fff; }
.btn-secondary:hover { background: var(--navy-dark); text-decoration: none; }
.btn-orange { background: var(--orange); color: #fff; }
.btn-orange:hover { background: #ea580c; text-decoration: none; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}
.btn-outline:hover { border-color: var(--teal); color: var(--teal); text-decoration: none; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }

/* Cards */
.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}
.card h2 {
    margin-top: 0;
    font-size: 1.1rem;
    color: var(--navy);
}

/* Tables */
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th, td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th {
    background: var(--gray-bg);
    color: var(--navy);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
tr:hover { background: #fafbfc; }

/* Status badges */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: capitalize;
}
.badge-pending   { background: var(--warning-bg); color: var(--warning); }
.badge-verified  { background: var(--info-bg);    color: var(--info); }
.badge-disbursed { background: var(--success-bg); color: var(--success); }
.badge-rejected  { background: var(--danger-bg);  color: var(--danger); }

/* Stat cards (dashboards) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
@media (max-width: 800px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
}
.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.stat-card .stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--navy);
    margin-top: 4px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.page-header h1 {
    color: var(--navy);
    font-size: 1.5rem;
    margin: 0;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 20px;
    justify-content: center;
}
.pagination-ellipsis {
    color: var(--text-muted);
    padding: 0 4px;
}
.results-info {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.upload-controls {
    display: flex;
    gap: 8px;
    margin-bottom: 6px;
}