:root {
    --navy: #16233B;
    --navy-light: #24365A;
    --slate: #4A5568;
    --amber: #D98E04;
    --amber-dark: #B5740A;
    --paper: #F7F7F5;
    --card: #FFFFFF;
    --card-alt: #FCFCFB;
    --line: #E2E1DC;
    --ok: #2F8F5B;
    --error: #C23B3B;
    --muted: #8A8A82;
    /* Text on page/card surfaces (headings, labels, ghost buttons) - kept
       separate from --navy, which stays the fixed brand color used for
       backgrounds (header, badges) in both themes. */
    --ink: var(--navy);
    --font-body: "Inter", system-ui, -apple-system, sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;
    color-scheme: light;
}

:root[data-theme="dark"] {
    --ink: #E8ECF3;
    --slate: #AEB9CC;
    --paper: #0F1420;
    --card: #1B2338;
    --card-alt: #202A42;
    --line: #2C3650;
    --amber-dark: #F2C368;
    --ok: #4CAF7D;
    --error: #E2685F;
    --muted: #8B93A6;
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

html {
    background-color: var(--paper);
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--slate);
    line-height: 1.5;
}

/* ---------- Header ---------- */

.site-header {
    background: var(--navy);
    border-bottom: 3px solid var(--amber);
}

.site-header__inner {
    max-width: 760px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.site-header__logo-placeholder {
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 18px;
    border: 1px dashed rgba(255, 255, 255, 0.4);
    padding: 4px 10px;
}

.site-header__logo {
    height: 36px;
    width: auto;
    flex-shrink: 0;
}

.site-header__logo--dark {
    display: none;
}

[data-theme="dark"] .site-header__logo--light {
    display: none;
}

[data-theme="dark"] .site-header__logo--dark {
    display: block;
}

.site-header__tagline {
    color: rgba(255, 255, 255, 0.65);
    font-size: 14px;
}

.theme-toggle {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: transparent;
    color: #fff;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.12);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 2px;
}

.theme-toggle__icon {
    width: 18px;
    height: 18px;
}

.theme-toggle__icon--moon {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--sun {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
    display: block;
}

/* ---------- Layout ---------- */

.site-main {
    max-width: 760px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

/* ---------- Form card ---------- */

.form-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 40px;
}

.form-card__eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--amber-dark);
    margin-bottom: 8px;
}

.form-card__header h1 {
    margin: 0 0 12px;
    font-size: 28px;
    color: var(--ink);
}

.form-card__intro {
    color: var(--slate);
    margin: 0 0 32px;
}

.form-required-note {
    color: var(--muted);
    font-size: 13px;
    margin: -12px 0 24px;
}

.required-mark {
    color: var(--error);
}

/* ---------- Sections ---------- */

.form-section {
    border: none;
    padding: 0;
    margin: 0 0 36px;
}

.form-section legend {
    font-weight: 600;
    color: var(--ink);
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 0 16px;
    border-bottom: 1px solid var(--line);
    width: 100%;
    margin-bottom: 20px;
}

.form-row {
    margin-bottom: 18px;
}

.form-row label {
    display: block;
    font-weight: 500;
    font-size: 14px;
    color: var(--ink);
    margin-bottom: 6px;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    max-width: 400px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 3px;
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--navy);
    background: #fff;
}

.form-row input[type=time],
.form-row input[type=date] {
    max-width: 180px;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 0 3px rgba(217, 142, 4, 0.15);
}

.form-row input:focus:invalid,
.form-row textarea:focus:invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(194, 59, 59, 0.12);
}

.form-row textarea {
    max-width: 100%;
    resize: vertical;
    min-height: 90px;
}

.form-row--checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
}

.form-row--checkbox input {
    width: auto;
}

.form-row--inline {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.form-row--inline > div {
    flex: 1 1 140px;
}

.field-hint {
    margin: 6px 0 0;
    font-size: 12px;
    color: var(--muted);
}

.field-error {
    display: block;
    color: var(--error);
    font-size: 13px;
    margin-top: 4px;
}

.form-errors {
    color: var(--error);
    font-size: 14px;
    margin-bottom: 20px;
}

.form-errors ul {
    margin: 0;
    padding-left: 18px;
}

/* Reference-number fields get the mono treatment — these are literal
   tracked data, not free text. */
.mono-input {
    font-family: var(--font-mono) !important;
    letter-spacing: 0.02em;
}

.mono-input--display {
    display: inline-block;
    padding: 4px 10px;
    background: var(--navy);
    color: #fff;
    border-radius: 3px;
    font-size: 16px;
}

/* ---------- Conditional fieldsets ---------- */

.form-section[hidden] {
    display: none;
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 15px;
    padding: 12px 24px;
    border-radius: 3px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}

.btn--primary {
    background: var(--amber);
    color: var(--navy);
}

.btn--primary:hover {
    background: var(--amber-dark);
    color: #fff;
}

.btn--ghost {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--ink);
}

.btn--ghost:hover {
    background: var(--navy);
    color: #fff;
}

.form-row--submit {
    margin-top: 28px;
}

/* ---------- Confirmation page ---------- */

.form-card--confirmation {
    text-align: center;
}

.confirmation-badge {
    width: 56px;
    height: 56px;
    line-height: 56px;
    border-radius: 50%;
    background: var(--ok);
    color: #fff;
    font-size: 28px;
    margin: 0 auto 20px;
}

/* ---------- Footer ---------- */

.site-footer {
    border-top: 1px solid var(--line);
    padding: 24px;
    background: var(--paper);
}

.site-footer__inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
}

.site-footer__links a {
    color: var(--slate);
    text-decoration: none;
}

.site-footer__links a:hover {
    color: var(--amber-dark);
    text-decoration: underline;
}

.site-footer__divider {
    margin: 0 8px;
}

.site-footer__copyright {
    margin: 10px 0 0;
}

/* ---------- Admin ---------- */

.site-main--wide {
    max-width: 1100px;
}

.form-card--narrow {
    max-width: 380px;
    margin: 60px auto;
}

.admin-nav {
    background: var(--navy-light);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-nav__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 14px;
}

.admin-nav__inner a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
}

.admin-nav__inner a:hover {
    color: #fff;
    text-decoration: underline;
}

.admin-nav__logout {
    margin-left: auto;
}

.admin-nav__logout-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    font-family: var(--font-body);
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
}

.admin-nav__logout-btn:hover {
    color: #fff;
}

.admin-flash {
    background: rgba(47, 143, 91, 0.12);
    border: 1px solid var(--ok);
    color: var(--ok);
    padding: 10px 16px;
    border-radius: 3px;
    font-size: 14px;
    margin-bottom: 20px;
}

.admin-detail__customer {
    margin-bottom: 28px;
}

.admin-detail__customer p {
    margin: 0 0 8px;
    font-size: 14px;
    color: var(--ink);
}

.admin-detail__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 4px 24px;
}

.admin-filter-form {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
}

.admin-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.admin-filter-row label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink);
}

.admin-filter-row__checkbox {
    flex-direction: row !important;
    align-items: center;
    gap: 8px !important;
}

.admin-filter-row__checkbox input {
    width: auto;
}

.admin-filter-row input,
.admin-filter-row select {
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 3px;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--navy);
    background: #fff;
}

.admin-result-count {
    font-size: 13px;
    color: var(--muted);
    margin: 0 0 12px;
}

.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.admin-table th,
.admin-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
}

.admin-table th {
    color: var(--muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.admin-table td {
    color: var(--ink);
}

.admin-table__subtext {
    color: var(--muted);
    font-size: 12px;
}

.admin-table__empty {
    text-align: center;
    color: var(--muted);
    padding: 24px;
}

.admin-status-select {
    padding: 6px 8px;
    border: 1px solid var(--line);
    border-radius: 3px;
    background: #fff;
    color: var(--navy);
    font-family: var(--font-body);
    font-size: 13px;
}

.admin-pagination {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}

.admin-notes-history {
    white-space: pre-wrap;
    background: var(--card-alt);
    border: 1px solid var(--line);
    border-radius: 3px;
    padding: 14px 16px;
    margin-bottom: 18px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink);
    max-height: 300px;
    overflow-y: auto;
}

.admin-pagination__link {
    display: inline-block;
    padding: 4px 10px;
    border: 1px solid var(--line);
    border-radius: 3px;
    color: var(--ink);
    text-decoration: none;
    font-size: 13px;
}

.admin-pagination__link--active {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}

.badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge--warning {
    background: rgba(217, 142, 4, 0.15);
    color: var(--amber-dark);
}

.badge--archived {
    background: rgba(74, 85, 104, 0.15);
    color: var(--slate);
}

.status-pill {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 10px;
}

.status-pill--pending {
    background: rgba(74, 85, 104, 0.15);
    color: var(--slate);
}

.status-pill--approved {
    background: rgba(47, 143, 91, 0.15);
    color: var(--ok);
}

.status-pill--rejected {
    background: rgba(194, 59, 59, 0.15);
    color: var(--error);
}

.admin-help h2 {
    color: var(--ink);
    font-size: 17px;
    margin: 28px 0 10px;
}

.admin-help h2:first-child {
    margin-top: 0;
}

.admin-help p,
.admin-help li {
    color: var(--slate);
    font-size: 14px;
    line-height: 1.6;
}

.admin-help ul {
    margin: 0 0 16px;
    padding-left: 20px;
}

/* ---------- Mobile ---------- */

@media (max-width: 600px) {
    .form-card {
        padding: 24px;
    }

    .admin-nav__inner {
        flex-wrap: wrap;
    }
}