/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-800);
    background: var(--gray-50);
}

/* ── Navbar ── */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-900);
    color: white;
    padding: 0 1.5rem;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-left, .nav-right { display: flex; align-items: center; gap: 0.5rem; }
.nav-brand { color: white; font-weight: 700; font-size: 16px; text-decoration: none; margin-right: 1rem; }
.nav-link { color: var(--gray-300); text-decoration: none; padding: 0.4rem 0.6rem; border-radius: var(--radius); font-size: 13px; }
.nav-link:hover { color: white; background: var(--gray-700); }
.nav-link.btn-new { background: var(--primary); color: white; }
.nav-link.btn-new:hover { background: var(--primary-hover); }
.nav-user { color: var(--gray-400); font-size: 13px; margin-right: 0.5rem; }

/* ── Container ── */
.container { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }

/* ── Flash Messages ── */
.flash-messages { margin-bottom: 1rem; }
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
    font-size: 13px;
}
.flash-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.flash-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.flash-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: white;
    color: var(--gray-700);
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    gap: 0.3rem;
    transition: all 0.15s;
}
.btn:hover { background: var(--gray-100); }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); }
.btn-success { background: var(--success); color: white; border-color: var(--success); }
.btn-success:hover { background: #15803d; }
.btn-danger { background: var(--danger); color: white; border-color: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-link { background: none; border: none; color: var(--primary); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; }
.inline-form { display: inline; }

/* ── Page Header ── */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.page-header h2 { font-size: 1.5rem; color: var(--gray-900); }
.header-actions { display: flex; gap: 0.5rem; align-items: center; }

/* ── Filters ── */
.filters-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}
.filters-bar input, .filters-bar select {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 13px;
}
.input-search { min-width: 250px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: white; border-radius: var(--radius); box-shadow: var(--shadow); }
thead { background: var(--gray-50); }
th, td { padding: 0.6rem 0.75rem; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: 13px; }
th { font-weight: 600; color: var(--gray-600); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tbody tr:hover { background: var(--gray-50); }
.actions { white-space: nowrap; display: flex; gap: 0.3rem; align-items: center; }
.nowrap { white-space: nowrap; }
.text-center { text-align: center; }
.text-warning { color: var(--warning); font-weight: 600; }
.details-cell { max-width: 250px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }

/* ── Badges ── */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: capitalize;
}
.badge-active { background: #dcfce7; color: #166534; }
.badge-completed { background: #dbeafe; color: #1e40af; }
.badge-cancelled { background: #fee2e2; color: #991b1b; }
.badge-admin { background: #fef3c7; color: #92400e; }
.badge-user { background: #e0e7ff; color: #3730a3; }
.badge-created { background: #dcfce7; color: #166534; }
.badge-updated { background: #dbeafe; color: #1e40af; }
.badge-deleted { background: #fee2e2; color: #991b1b; }
.badge-exported { background: #fef3c7; color: #92400e; }
.badge-login { background: #d1fae5; color: #065f46; }
.badge-logout { background: #e5e7eb; color: #374151; }
.badge-login_failed { background: #fee2e2; color: #991b1b; }

/* ── Pagination ── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}
.page-info { color: var(--gray-500); font-size: 13px; }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 3rem; color: var(--gray-500); }
.empty-state p { margin-bottom: 1rem; }

/* ── Login Page ── */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--gray-100);
}
.login-card {
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}
.login-card h1 { font-size: 1.25rem; color: var(--gray-900); margin-bottom: 0.25rem; }
.login-card h2 { font-size: 1rem; color: var(--gray-500); margin-bottom: 1.5rem; font-weight: 400; }

/* ── Forms ── */
.form-card { background: white; padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 0.25rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.input-readonly { background: var(--gray-100); color: var(--gray-500); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.form-actions { display: flex; gap: 0.5rem; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--gray-200); }

fieldset {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}
legend {
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-800);
    padding: 0 0.5rem;
}
fieldset h4 { margin: 0.75rem 0 0.5rem; color: var(--gray-600); font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ── Items Grid ── */
.items-grid { margin-bottom: 0.5rem; }
.items-header {
    display: grid;
    grid-template-columns: 1fr 120px 120px;
    gap: 0.5rem;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    padding: 0.25rem 0;
}
.item-row {
    display: grid;
    grid-template-columns: 1fr 120px 120px;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}
.item-row input {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 13px;
}
.item-row input:focus { outline: none; border-color: var(--primary); }
.totals-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}
.total-field { background: var(--gray-100) !important; font-weight: 600; }

/* ── Rx Grid ── */
.rx-grid { overflow-x: auto; }
.rx-table { font-size: 13px; }
.rx-table th { font-size: 11px; padding: 0.4rem; }
.rx-table td { padding: 0.3rem; }
.rx-input { width: 70px !important; padding: 0.3rem 0.4rem !important; font-size: 12px !important; text-align: center; }
.rx-section-label { font-weight: 600; color: var(--gray-600); font-size: 12px; vertical-align: middle; text-align: center; }
.rx-eye-label { font-weight: 600; color: var(--gray-500); font-size: 12px; }
.rx-view td { text-align: center; }

/* ── Payment Row ── */
.payment-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.75rem;
}
.payment-item label { display: block; font-size: 12px; font-weight: 600; color: var(--gray-600); margin-bottom: 0.25rem; text-align: center; }
.payment-item input {
    width: 100%;
    padding: 0.4rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 13px;
    text-align: center;
}

/* ── Invoice View Details ── */
.meta-line { color: var(--gray-500); font-size: 13px; margin-bottom: 1.5rem; }
.detail-section { background: white; border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; margin-bottom: 1rem; }
.detail-section h3 { font-size: 15px; color: var(--gray-800); margin-bottom: 0.75rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--gray-200); }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.5rem; }
.detail-grid div { font-size: 13px; }
.detail-table { box-shadow: none; }
.payment-display { font-size: 13px; }
.payment-display p { margin-bottom: 0.25rem; }

/* ── Error Pages ── */
.error-page { text-align: center; padding: 4rem 2rem; }
.error-page h1 { font-size: 4rem; color: var(--gray-300); }
.error-page h2 { font-size: 1.5rem; color: var(--gray-700); margin-bottom: 0.5rem; }
.error-page p { color: var(--gray-500); margin-bottom: 1.5rem; }

/* ── Autocomplete ── */
.autocomplete-list {
    position: absolute;
    z-index: 50;
    background: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    max-height: 200px;
    overflow-y: auto;
    display: none;
}
.autocomplete-list.show { display: block; }
.autocomplete-item {
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 13px;
    border-bottom: 1px solid var(--gray-100);
}
.autocomplete-item:hover { background: var(--gray-50); }
.autocomplete-item:last-child { border-bottom: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .navbar { flex-direction: column; height: auto; padding: 0.75rem; gap: 0.5rem; }
    .nav-left, .nav-right { flex-wrap: wrap; justify-content: center; }
    .form-row { grid-template-columns: 1fr; }
    .items-header, .item-row { grid-template-columns: 1fr; }
    .totals-row { grid-template-columns: 1fr; }
    .payment-row { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
    .filters-bar { flex-direction: column; }
    .filters-bar input, .filters-bar select { min-width: auto; width: 100%; }
}