:root {
    --color-bg: #f4f6f9;
    --color-card: #ffffff;
    --color-border: #e0e4ea;
    --color-text: #1f2937;
    --color-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-success: #16a34a;
    --color-danger: #dc2626;
    --color-booked-bg: #dbeafe;
    --color-booked-text: #1e40af;
    --color-done-bg: #dcfce7;
    --color-done-text: #166534;
    --color-cancelled-bg: #fee2e2;
    --color-cancelled-text: #991b1b;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

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

.topbar {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1.5rem;
}
.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--color-text); }
.brand:hover { text-decoration: none; }
.topnav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.user-chip { color: var(--color-muted); font-size: 0.9rem; }

.page-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.page-header h1 { margin: 0.1rem 0; }
.subtitle { color: var(--color-muted); margin: 0.25rem 0 0; }
.back-link { font-size: 0.9rem; color: var(--color-muted); }

.section { margin-top: 2rem; }
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.section-header h2 { margin: 0; }

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.form-card { display: none; margin-bottom: 1.25rem; }
.form-card.show { display: block; }
.form-card h2, .form-card h3 { margin-top: 0; }

.auth-wrap { display: flex; justify-content: center; padding-top: 3rem; }
.auth-card { width: 100%; max-width: 380px; }
.auth-card h1 { margin-top: 0; font-size: 1.4rem; }
.auth-card label { display: block; margin-bottom: 1rem; }

.grid-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}
.grid-form h2, .grid-form h3 { grid-column: 1 / -1; }
.grid-form label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; color: var(--color-muted); }
.grid-form label.wide { grid-column: 1 / -1; }
.grid-form .form-actions { grid-column: 1 / -1; display: flex; gap: 0.75rem; margin-top: 0.25rem; }

input[type=text], input[type=number], input[type=date], input[type=password], select {
    padding: 0.55rem 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.95rem;
    background: #fff;
    color: var(--color-text);
    width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }
input[readonly] { background: #f3f4f6; color: var(--color-muted); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    border-radius: 6px;
    border: 1px solid transparent;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.btn-ghost:hover { background: #f3f4f6; }
.btn-danger { background: #fff; border-color: var(--color-danger); color: var(--color-danger); }
.btn-danger:hover { background: var(--color-danger); color: #fff; }
.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.82rem; }
.btn-block { width: 100%; justify-content: center; }

.filter-bar {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}
.filter-bar label {
    display: flex;
    flex-direction: column;
    font-size: 0.82rem;
    color: var(--color-muted);
    gap: 0.25rem;
}
.print-link { margin-left: auto; }

.table-wrap { overflow-x: auto; background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.data-table th, .data-table td { padding: 0.65rem 0.85rem; text-align: left; border-bottom: 1px solid var(--color-border); }
.data-table thead th { background: #f9fafb; color: var(--color-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; }
.data-table tbody tr:last-child td { border-bottom: none; }
.row-link { font-weight: 600; }
.actions-cell { display: flex; gap: 0.5rem; white-space: nowrap; }
.inline-form { display: inline; }

.totals-row td { font-weight: 700; background: #f9fafb; }

.status-booked { background: var(--color-booked-bg); }
.status-done { background: var(--color-done-bg); }
.status-cancelled { background: var(--color-cancelled-bg); }

.badge { padding: 0.2rem 0.55rem; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.badge.status-booked { background: #bfdbfe; color: var(--color-booked-text); }
.badge.status-done { background: #bbf7d0; color: var(--color-done-text); }
.badge.status-cancelled { background: #fecaca; color: var(--color-cancelled-text); }

.text-positive { color: var(--color-success); font-weight: 600; }
.text-negative { color: var(--color-danger); font-weight: 600; }

.balance-display { font-size: 1.05rem; }

.empty-state { color: var(--color-muted); padding: 1.5rem; text-align: center; background: var(--color-card); border: 1px dashed var(--color-border); border-radius: var(--radius); }

.flash { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.9rem; }
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }

/* Print views */
.print-body { max-width: 900px; margin: 1.5rem auto; padding: 0 1rem; }
.print-header { margin-bottom: 1.25rem; }
.print-header h1 { margin-bottom: 0.25rem; font-size: 1.3rem; }
.print-table { width: 100%; }

@media print {
    .no-print { display: none !important; }
    body { background: #fff; }
}