:root {
    --pico-font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --pico-border-radius: 0.6rem;
    --pico-form-element-spacing-vertical: 0.6rem;
    --pico-form-element-spacing-horizontal: 1rem;
}

main.container {
    max-width: 1300px;
    padding-top: 1.5rem;
    padding-bottom: 4rem;
}

/* Top Navbar */
nav.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--pico-muted-border-color, #e5e7eb);
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--pico-primary-background, #0172ad);
    text-decoration: none;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: var(--pico-muted-color, #6b7280);
    transition: color 0.15s ease;
}
.nav-links a:hover {
    color: var(--pico-primary-background, #0172ad);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.page-header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
}
.page-header p {
    margin: 0.25rem 0 0 0;
    color: var(--pico-muted-color, #6b7280);
    font-size: 0.95rem;
}

/* Toolbar & Search */
.toolbar-card {
    background: var(--pico-card-background-color, #ffffff);
    padding: 1rem;
    border-radius: var(--pico-border-radius, 0.6rem);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    margin-bottom: 1.5rem;
}
.toolbar-form {
    display: flex;
    gap: 0.75rem;
    margin: 0;
    flex-wrap: wrap;
}
.toolbar-form input[type="search"] {
    margin: 0;
    flex: 1;
    min-width: 240px;
}
.toolbar-form button, .toolbar-form a[role="button"] {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

/* Table Styling */
.table-card {
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: var(--pico-border-radius, 0.6rem);
    overflow-x: auto;
    background: var(--pico-card-background-color, #ffffff);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    margin-bottom: 1.5rem;
}
table.codes {
    margin: 0;
    width: 100%;
    border-collapse: collapse;
}
table.codes th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pico-muted-color, #6b7280);
    background: rgba(150, 150, 150, 0.05);
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--pico-muted-border-color, #e5e7eb);
}
table.codes td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--pico-muted-border-color, #e5e7eb);
    font-size: 0.9rem;
}
table.codes tr:last-child td {
    border-bottom: none;
}
table.codes tr:hover td {
    background-color: rgba(150, 150, 150, 0.03);
}

/* QR Code Thumbnail */
.qr-thumb {
    width: 60px !important;
    min-width: 60px !important;
    height: 60px !important;
    max-height: 60px !important;
    aspect-ratio: 1 / 1 !important;
    object-fit: contain;
    padding: 4px;
    background: #ffffff;
    border-radius: 6px;
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    display: block;
    margin: 0;
}

/* Badges (Pills) */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.2;
}
.status-active { background: #dcfce7; color: #15803d; }
.status-expired { background: #fee2e2; color: #b91c1c; }
.status-pending { background: #fef9c3; color: #854d0e; }

/* Actions Column & Buttons */
table.codes td.cell-actions {
    text-align: right;
    vertical-align: middle;
    white-space: nowrap;
}

.actions {
    display: inline-flex;
    gap: 0.4rem;
    align-items: center;
    justify-content: flex-end;
    margin: 0;
    padding: 0;
}
.actions form {
    margin: 0 !important;
    padding: 0 !important;
    display: inline-flex;
    align-items: center;
}
.btn-action {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 34px !important;
    height: 34px !important;
    border-radius: 6px !important;
    color: var(--pico-muted-color, #6b7280) !important;
    background: transparent !important;
    border: 1px solid transparent !important;
    transition: all 0.15s ease;
    text-decoration: none !important;
    padding: 0 !important;
    margin: 0 !important;
    cursor: pointer;
    box-shadow: none !important;
    outline: none;
}
.btn-action:hover {
    color: var(--pico-primary-background, #0172ad) !important;
    background: rgba(150, 150, 150, 0.1) !important;
    border-color: var(--pico-muted-border-color, #e5e7eb) !important;
}
.btn-action.delete:hover {
    color: #d32f2f !important;
    background: #fee2e2 !important;
    border-color: #f87171 !important;
}

/* Alerts / Flash Messages */
.flash {
    padding: 0.85rem 1.25rem;
    border-radius: var(--pico-border-radius, 0.6rem);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}
.flash-ok { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash-err { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    padding: 0.4rem 0.85rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
}
.pagination a {
    color: var(--pico-color, #1f2937);
    background: var(--pico-card-background-color, #ffffff);
}
.pagination a:hover {
    border-color: var(--pico-primary-background, #0172ad);
    color: var(--pico-primary-background, #0172ad);
}
.pagination .current {
    background: var(--pico-primary-background, #0172ad);
    color: #fff;
    border-color: var(--pico-primary-background, #0172ad);
}
.pagination .disabled {
    color: var(--pico-muted-color, #6b7280);
    opacity: 0.5;
    border-color: transparent;
}
/* Layout & Form Cards */
.form-card {
    background: var(--pico-card-background-color, #ffffff);
    padding: 1.75rem;
    border-radius: var(--pico-border-radius, 0.6rem);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.help-text {
    display: block;
    margin-top: -0.25rem;
    margin-bottom: 0.75rem;
    color: var(--pico-muted-color, #6b7280);
    font-size: 0.825rem;
}

.help-text code {
    font-size: 0.8rem;
    padding: 0.1rem 0.35rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    margin-top: 1.5rem;
}

.form-actions button, .form-actions a[role="button"] {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Grid Layout for Form + QR Preview */
.grid-form-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 992px) {
    .grid-form-layout {
        grid-template-columns: 2fr 1fr;
        align-items: start;
    }
}

/* QR Preview Card */
.qr-preview-card {
    background: var(--pico-card-background-color, #ffffff);
    padding: 1.75rem;
    border-radius: var(--pico-border-radius, 0.6rem);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    text-align: center;
}

.qr-preview-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.qr-preview-box {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.25rem;
    background: #ffffff;
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: 8px;
    margin-bottom: 1.25rem;
}

.qr-preview-box img {
    max-width: 100%;
    height: auto;
    max-height: 220px;
    object-fit: contain;
}

.qr-preview-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.qr-preview-actions a[role="button"] {
    margin: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    width: 100%;
}
/* Stat Cards / Tiles */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--pico-card-background-color, #ffffff);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: var(--pico-border-radius, 0.6rem);
    padding: 1.25rem 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-card .stat-info {
    display: flex;
    flex-direction: column;
}

.stat-card .stat-value {
    font-size: 1.85rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--pico-color, #1f2937);
}

.stat-card .stat-label {
    font-size: 0.825rem;
    color: var(--pico-muted-color, #6b7280);
    margin-top: 0.25rem;
    font-weight: 500;
}

.stat-card .stat-icon {
    width: 46px;
    height: 46px;
    border-radius: 10px;
    background: rgba(1, 114, 173, 0.1);
    color: var(--pico-primary-background, #0172ad);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card.bot .stat-icon {
    background: rgba(245, 158, 11, 0.12);
    color: #d97706;
}

/* Range Filter Container */
.range-container {
    background: var(--pico-card-background-color, #ffffff);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: var(--pico-border-radius, 0.6rem);
    padding: 0.85rem 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.range-buttons {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.range-buttons a[role="button"] {
    margin: 0;
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.range-custom {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.range-custom input[type="date"] {
    margin: 0;
    padding: 0.35rem 0.65rem;
    font-size: 0.85rem;
}

.range-custom button {
    margin: 0;
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* Chart Card */
.chart-card {
    background: var(--pico-card-background-color, #ffffff);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: var(--pico-border-radius, 0.6rem);
    padding: 1.25rem 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    margin-bottom: 1.5rem;
}

.chart-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 280px;
}

/* Auth / Login Page */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(75vh - 100px);
    padding: 1.5rem 0;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--pico-card-background-color, #ffffff);
    border: 1px solid var(--pico-muted-border-color, #e5e7eb);
    border-radius: var(--pico-border-radius, 0.6rem);
    padding: 2.25rem 2rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.auth-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.auth-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0.85rem 0 0.25rem 0;
}

.auth-header p {
    color: var(--pico-muted-color, #6b7280);
    font-size: 0.875rem;
    margin: 0;
}

.auth-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto;
    border-radius: 12px;
    background: rgba(1, 114, 173, 0.1);
    color: var(--pico-primary-background, #0172ad);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-submit {
    width: 100%;
    margin-top: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}