/**
 * Custom Invoice Generator – form styles.
 * Modern, premium SaaS feel: Poppins, soft shadows, rounded corners, subtle borders.
 */

.custinv-wrap,
.custinv-wrap * {
    box-sizing: border-box;
}

.custinv-wrap {
    --custinv-bg: #ffffff;
    --custinv-bg-soft: #f8fafc;
    --custinv-border: #e5e7eb;
    --custinv-border-strong: #d1d5db;
    --custinv-text: #0f172a;
    --custinv-text-soft: #475569;
    --custinv-muted: #94a3b8;
    --custinv-primary: #111827;
    --custinv-primary-hover: #000000;
    --custinv-accent: #2563eb;
    --custinv-danger: #dc2626;
    --custinv-success: #047857;
    --custinv-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --custinv-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
    --custinv-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08);
    --custinv-radius: 14px;
    --custinv-radius-sm: 10px;

    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    color: var(--custinv-text);
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 16px;
    line-height: 1.5;
    font-size: 15px;
}

.custinv-wrap--admin {
    margin: 16px 0;
}

.custinv-card {
    background: var(--custinv-bg);
    border: 1px solid var(--custinv-border);
    border-radius: var(--custinv-radius);
    box-shadow: var(--custinv-shadow-md);
    padding: 28px 28px 24px;
    margin-bottom: 24px;
}

.custinv-card-header {
    margin-bottom: 20px;
}

.custinv-card-header--row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.custinv-card-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--custinv-text);
    letter-spacing: -0.01em;
}

.custinv-card-sub {
    margin: 0;
    color: var(--custinv-text-soft);
    font-size: 14px;
}

.custinv-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 20px;
}

.custinv-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.custinv-field--full {
    grid-column: 1 / -1;
}

.custinv-field label {
    font-size: 13px;
    font-weight: 500;
    color: var(--custinv-text);
}

.custinv-req {
    color: var(--custinv-danger);
    margin-left: 2px;
}

.custinv-field input,
.custinv-field select,
.custinv-field textarea,
.custinv-table input[type="time"],
.custinv-table input[type="date"],
.custinv-table input[type="text"] {
    width: 100%;
    border: 1px solid var(--custinv-border);
    background: var(--custinv-bg);
    border-radius: var(--custinv-radius-sm);
    padding: 10px 12px;
    font: inherit;
    font-size: 14px;
    color: var(--custinv-text);
    transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
    box-shadow: var(--custinv-shadow-sm);
    outline: none;
}

.custinv-field textarea {
    resize: vertical;
    min-height: 80px;
}

.custinv-field input::placeholder,
.custinv-field textarea::placeholder,
.custinv-table input::placeholder {
    color: var(--custinv-muted);
}

.custinv-field input:focus,
.custinv-field select:focus,
.custinv-field textarea:focus,
.custinv-table input:focus {
    border-color: var(--custinv-text);
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

.custinv-field.is-invalid input,
.custinv-field.is-invalid select,
.custinv-field.is-invalid textarea {
    border-color: var(--custinv-danger);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
}

/* Buttons */
.custinv-btn {
    appearance: none;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 10px 18px;
    font: inherit;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background-color 150ms ease, border-color 150ms ease, transform 150ms ease, box-shadow 150ms ease, color 150ms ease;
    text-decoration: none;
    line-height: 1;
}

.custinv-btn:focus-visible {
    outline: 2px solid var(--custinv-text);
    outline-offset: 2px;
}

.custinv-btn--primary {
    background: var(--custinv-primary);
    color: #fff;
    border-color: var(--custinv-primary);
    box-shadow: var(--custinv-shadow-md);
}

.custinv-btn--primary:hover:not(:disabled) {
    background: var(--custinv-primary-hover);
    border-color: var(--custinv-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--custinv-shadow-lg);
}

.custinv-btn--primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.custinv-btn--ghost {
    background: var(--custinv-bg);
    color: var(--custinv-text);
    border-color: var(--custinv-border-strong);
}

.custinv-btn--ghost:hover {
    background: var(--custinv-bg-soft);
    transform: translateY(-1px);
    box-shadow: var(--custinv-shadow-sm);
}

.custinv-btn--danger {
    background: transparent;
    color: var(--custinv-danger);
    border-color: transparent;
    padding: 6px 10px;
    border-radius: 8px;
}

.custinv-btn--danger:hover {
    background: rgba(220, 38, 38, 0.08);
}

/* Task table */
.custinv-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--custinv-border);
    border-radius: var(--custinv-radius-sm);
    background: var(--custinv-bg);
}

.custinv-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    min-width: 720px;
}

.custinv-table thead th {
    text-align: left;
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--custinv-text-soft);
    background: var(--custinv-bg-soft);
    padding: 10px 12px;
    border-bottom: 1px solid var(--custinv-border);
}

.custinv-table .custinv-th-num {
    text-align: right;
}
.custinv-table .custinv-th-action {
    width: 44px;
}

.custinv-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--custinv-border);
    vertical-align: middle;
    background: var(--custinv-bg);
}

.custinv-table tbody tr:last-child td {
    border-bottom: none;
}

.custinv-table .custinv-cell-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    color: var(--custinv-text);
    font-weight: 500;
}

.custinv-table input {
    box-shadow: none;
    padding: 8px 10px;
    font-size: 13px;
}

.custinv-table tfoot td {
    padding: 14px 12px;
    background: var(--custinv-bg-soft);
    border-top: 1px solid var(--custinv-border);
    font-weight: 500;
}

.custinv-table tfoot .custinv-tfoot-label {
    text-align: right;
    color: var(--custinv-text-soft);
}

.custinv-table tfoot .custinv-tfoot-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-size: 16px;
    color: var(--custinv-text);
}

/* Actions / alerts */
.custinv-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 4px;
}

.custinv-actions #custinv-submit {
    align-self: flex-end;
    padding: 14px 28px;
    font-size: 15px;
}

.custinv-alert {
    border-radius: var(--custinv-radius-sm);
    padding: 12px 14px;
    font-size: 14px;
    border: 1px solid transparent;
}

.custinv-alert--error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.custinv-alert--success {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

/* Responsive */
@media (max-width: 768px) {
    .custinv-grid {
        grid-template-columns: 1fr;
    }
    .custinv-card {
        padding: 20px;
    }
    .custinv-actions #custinv-submit {
        width: 100%;
        align-self: stretch;
    }
}

/* Admin context tweaks */
.custinv-admin-wrap {
    max-width: 1180px;
}
.custinv-admin-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.custinv-admin-sub {
    color: #475569;
    font-size: 14px;
    margin-bottom: 20px;
}