:root {
    --bg: #f0f3f8;
    --surface: #ffffff;
    --surface-soft: #f7f9fc;
    --ink: #102a43;
    --ink-soft: #486581;
    --line: #d9e2ec;
    --primary: #0f766e;
    --primary-strong: #0b4f6c;
    --danger: #a4161a;
    --sidebar-width: 250px;
    --shadow: 0 12px 28px rgba(16, 42, 67, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Trebuchet MS", "Gill Sans", "Segoe UI", sans-serif;
    margin: 0;
    background:
        radial-gradient(circle at 10% 20%, #dbeafe 0%, rgba(219, 234, 254, 0) 45%),
        radial-gradient(circle at 90% 15%, #dcfce7 0%, rgba(220, 252, 231, 0) 40%),
        var(--bg);
    color: var(--ink);
    min-height: 100vh;
}

a {
    color: var(--primary-strong);
}

.app-shell {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #0b3c5d 0%, #0f766e 100%);
    color: #fff;
    padding: 1.5rem 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.brand {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 1.2rem;
}

.sidebar-user {
    font-size: 0.92rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 0.65rem 0.75rem;
    margin-bottom: 1.2rem;
    word-break: break-word;
}

.sidebar-nav {
    display: grid;
    gap: 0.45rem;
}

.sidebar-nav a {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    color: #effcff;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid transparent;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.sidebar-nav a:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateX(2px);
}

.sidebar-footer {
    margin-top: auto;
    display: grid;
    gap: 0.55rem;
}

.sidebar-footer-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    padding: 0.6rem 0.8rem;
}

.sidebar-footer-link:hover {
    background: rgba(255, 255, 255, 0.18);
}

.sidebar-footer form {
    margin: 0;
}

.sidebar-footer button {
    width: 100%;
    background: rgba(0, 0, 0, 0.22);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 8px;
    padding: 0.6rem 0.8rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.main-panel {
    flex: 1;
    min-width: 0;
    padding: 1.4rem 1.4rem 2rem;
}

.page-content {
    max-width: 1080px;
    margin: 0 auto;
}

.card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid rgba(11, 79, 108, 0.08);
}

.card-toolbar,
.card-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.7rem;
}

.card-toolbar h2,
.card-header-row h2 {
    margin: 0;
}

.flash {
    padding: 0.85rem 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.flash.success {
    background: #d8f3dc;
    color: #2d6a4f;
}

.flash.error {
    background: #ffe5e5;
    color: #a4161a;
}

input:not([type="checkbox"]),
select,
textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #bcccdc;
    border-radius: 8px;
    margin-bottom: 0.7rem;
    background: #fff;
}

input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 2.6rem;
    height: 1.45rem;
    border-radius: 999px;
    border: 1px solid #9fb3c8;
    background: #d9e2ec;
    margin: 0;
    position: relative;
    cursor: pointer;
    vertical-align: middle;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

input[type="checkbox"]::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 2px;
    width: 1.05rem;
    height: 1.05rem;
    border-radius: 999px;
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(16, 42, 67, 0.3);
    transform: translateY(-50%);
    transition: left 0.2s ease;
}

input[type="checkbox"]:checked {
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    border-color: var(--primary-strong);
}

input[type="checkbox"]:checked::after {
    left: calc(100% - 1.05rem - 2px);
}

input[type="checkbox"]:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

button,
.btn {
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    color: #fff;
    border: 0;
    border-radius: 8px;
    padding: 0.62rem 0.95rem;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
}

.btn.secondary {
    background: #d9e2ec;
    color: #243b53;
}

.icon-actions {
    display: inline-flex;
    gap: 0.35rem;
    align-items: center;
}

.icon-btn {
    width: 2.2rem;
    height: 2.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface-soft);
    color: var(--primary-strong);
    text-decoration: none;
    cursor: pointer;
    padding: 0;
}

.icon-btn svg {
    width: 1.1rem;
    height: 1.1rem;
    fill: currentColor;
}

.icon-btn i {
    font-size: 1rem;
    line-height: 1;
}
.icon-btn:hover {
    background: #e6f4f1;
}

.icon-btn.danger {
    color: var(--danger);
    border-color: #f0c3c6;
    background: #fff6f7;
}

.icon-btn.danger:hover {
    background: #ffe5e5;
}

.compact-actions .icon-btn {
    width: 1.75rem;
    height: 1.75rem;
}

.compact-actions .icon-btn i {
    font-size: 0.82rem;
}

.compact-actions .icon-btn svg {
    width: 0.88rem;
    height: 0.88rem;
}

.compact-history-table th,
.compact-history-table td {
    padding: 0.32rem 0.5rem;
    line-height: 1.15;
}

.compact-history-table th {
    font-size: 0.92rem;
}

.grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    border-bottom: 1px solid #e0e6ed;
    text-align: left;
    padding: 0.6rem;
    vertical-align: top;
}

table th:last-child,
table td:last-child {
    text-align: right;
}

table td:last-child .icon-actions {
    display: flex;
    justify-content: flex-end;
    width: 100%;
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.8rem;
}

.tag.due {
    background: #ffe8cc;
    color: #9c4221;
}

.overdue-highlight {
    border-color: #f59e0b;
    background: linear-gradient(180deg, #fff7e8 0%, #ffffff 45%);
}

/* Dashboard due cards */
.machine-due-card {
    border-left: 4px solid #f59e0b;
}

.machine-due-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.machine-due-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.machine-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-strong);
    text-decoration: none;
}

.machine-name:hover {
    text-decoration: underline;
}

.machine-due-reason {
    font-size: 0.9rem;
    color: #7a5200;
    margin: 0.2rem 0 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.machine-due-reason i {
    color: #f59e0b;
}

.machine-due-parts {
    margin: 0.75rem 0;
    padding: 0.65rem 0.85rem;
    background: var(--surface-soft);
    border-radius: 8px;
    border: 1px solid var(--line);
}

.machine-due-parts-label {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--ink-soft);
    margin: 0 0 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.parts-list {
    margin: 0;
    padding-left: 1.2rem;
    font-size: 0.9rem;
}

.parts-list li + li {
    margin-top: 0.2rem;
}

.machine-due-meta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--ink-soft);
    margin-top: 0.75rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--line);
}

.machine-due-meta i {
    margin-right: 0.25rem;
}

.btn.btn-sm {
    padding: 0.3rem 0.8rem;
    font-size: 0.85rem;
}

.fuel-trend-canvas {
    display: block;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    background: #f8fbfb;
}

.fuel-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}

.fuel-trend-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
}

.fuel-trend-badge.improving {
    background: #e8f5e9;
    color: #1b5e20;
}

.fuel-trend-badge.worsening {
    background: #fde8e8;
    color: #9b1c1c;
}

.fuel-trend-badge.stable {
    background: #e9f2ff;
    color: #1f3f77;
}

.fuel-detail-chart-wrap {
    height: 280px;
    margin-bottom: 0.85rem;
    border: 1px solid #e0e6ed;
    border-radius: 10px;
    background: #f8fbfb;
    padding: 0.55rem;
}

.due-note {
    margin: 0.35rem 0 0.75rem;
    padding: 0.45rem 0.65rem;
    border-left: 4px solid #f59e0b;
    background: #fff3cd;
    color: #7a5200;
    border-radius: 6px;
    font-size: 0.92rem;
}

.table-row-overdue {
    background: #fffaf0;
}

.due-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
}

.due-badge.overdue {
    background: #fde8e8;
    color: #9b1c1c;
}

.due-badge.upcoming {
    background: #e8f5e9;
    color: #1b5e20;
}

/* Settings tabs */
.settings-tabs {
    margin-top: 1rem;
    --settings-tab-bg: #e8eef5;
    --settings-tab-active-bg: #f8fbff;
    --settings-tab-active-text: #102a43;
    --settings-tab-panel-bg: #f8fbff;
    --settings-tab-line: rgba(11, 79, 108, 0.22);
}

.settings-tab-list {
    display: flex;
    gap: 0.35rem;
    align-items: flex-end;
    border-bottom: 1px solid var(--settings-tab-line);
    padding: 0 0.8rem;
    margin-bottom: 0;
}

.settings-tab {
    border: 1px solid var(--settings-tab-line);
    border-bottom: 0;
    background: var(--settings-tab-bg);
    color: #334e68;
    border-radius: 12px 12px 0 0;
    padding: 0.6rem 1rem;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: background 0.2s ease, color 0.2s ease;
    position: relative;
    top: 1px;
}

.settings-tab:hover {
    background: #dde7f2;
}

.settings-tab:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

.settings-tab.active {
    color: var(--settings-tab-active-text);
    border-color: var(--settings-tab-line);
    border-bottom: 1px solid var(--settings-tab-active-bg);
    background: var(--settings-tab-active-bg);
}

.settings-tab-panel {
    display: none;
    background: var(--settings-tab-panel-bg);
    border: 1px solid var(--settings-tab-line);
    border-top: 0;
    border-radius: 0 12px 12px 12px;
    padding: 1rem;
    animation: settingsTabIn 0.18s ease;
}

.settings-tab-panel.active {
    display: block;
}

.settings-inline-row {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
    flex-wrap: wrap;
}

.settings-inline-row input {
    margin-bottom: 0;
    min-height: 2.8rem;
}

.settings-inline-row .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.settings-inline-row form {
    margin: 0;
    display: inline-flex;
}

.team-member-summary-table td {
    vertical-align: middle;
}

.team-member-summary-table th:nth-child(1) {
    width: 18%;
}

.team-member-summary-table th:nth-child(2) {
    width: 42%;
}

.team-member-summary-table th:nth-child(3) {
    width: 18%;
}

.team-member-summary-table th:nth-child(4) {
    width: 10%;
    text-align: right;
}

.team-key-row {
    flex-wrap: nowrap;
}

.api-key-row,
.team-key-row {
    align-items: center;
}

.api-key-row form,
.team-key-row form {
    display: inline-flex;
    align-items: center;
    margin: 0;
}

.api-key-row .icon-btn,
.team-key-row .icon-btn {
    margin: 0;
}

.team-actions-wrap {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
}

.team-actions-wrap form {
    margin: 0;
}

.team-access-summary {
    display: inline-block;
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
    font-size: 0.82rem;
    font-weight: 700;
}

.team-access-summary.none {
    background: #f1f5f9;
    color: #475569;
}

.team-access-summary.some {
    background: #e6f6ef;
    color: #0f5f46;
}

.team-summary-cell {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.modal-card-wide {
    width: min(980px, 100%);
}

.access-editor-table input[type="checkbox"] {
    margin: 0;
}

.access-editor-table {
    width: 100%;
    table-layout: auto;
}

.access-editor-table th:first-child,
.access-editor-table td:first-child {
    min-width: 160px;
    white-space: nowrap;
}

.access-editor-table th:not(:first-child),
.access-editor-table td:not(:first-child) {
    min-width: 112px;
    text-align: right;
    white-space: nowrap;
}

.access-header-toggle-wrap {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.45rem;
    width: 100%;
}

.access-header-toggle {
    width: 1.9rem !important;
    height: 1.05rem !important;
}

.access-header-toggle::after {
    width: 0.72rem !important;
    height: 0.72rem !important;
}

.access-header-toggle:checked::after {
    left: calc(100% - 0.72rem - 2px) !important;
}

.team-access-bulk-btn {
    min-height: 2.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.34rem 0.72rem;
    font-size: 0.9rem;
    border-radius: 999px;
    border: 1px solid #b7c6d6;
    background: #d9e2ec;
    color: #243b53;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.team-access-bulk-btn:hover {
    background: #c8d4e1;
    transform: translateY(-1px);
}

.team-access-bulk-btn.is-active {
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    color: #ffffff;
    border-color: var(--primary-strong);
}

.team-access-bulk-btn:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

@keyframes settingsTabIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 620px) {
    .settings-tab-list {
        flex-wrap: wrap;
    }

    .settings-tab {
        flex: 1 1 calc(50% - 0.5rem);
        text-align: center;
        top: 0;
    }

    .settings-tab-panel {
        border-top: 1px solid var(--settings-tab-line);
        border-radius: 12px;
    }

    .team-key-row {
        flex-wrap: wrap;
    }
}

/* Machine detail tabs */
.machine-tabs-card {
    padding-top: 0.9rem;
}

.machine-tabs {
    --machine-tab-bg: #e8eef5;
    --machine-tab-active-bg: #f8fbff;
    --machine-tab-active-text: #102a43;
    --machine-tab-panel-bg: #f8fbff;
    --machine-tab-line: rgba(11, 79, 108, 0.22);
}

.machine-tab-list {
    display: flex;
    gap: 0.35rem;
    align-items: flex-end;
    border-bottom: 1px solid var(--machine-tab-line);
    padding: 0 0.8rem;
    margin-bottom: 0;
}

.machine-tab {
    border: 1px solid var(--machine-tab-line);
    border-bottom: 0;
    background: var(--machine-tab-bg);
    color: #334e68;
    border-radius: 12px 12px 0 0;
    padding: 0.55rem 0.95rem;
    cursor: pointer;
    font-size: 0.93rem;
    font-weight: 700;
    transition: background 0.2s ease, color 0.2s ease;
    position: relative;
    top: 1px;
}

.machine-tab:hover {
    background: #dde7f2;
}

.machine-tab:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

.machine-tab.active {
    color: var(--machine-tab-active-text);
    border-color: var(--machine-tab-line);
    border-bottom: 1px solid var(--machine-tab-active-bg);
    background: var(--machine-tab-active-bg);
}

.machine-tab-panel {
    display: none;
    background: var(--machine-tab-panel-bg);
    border: 1px solid var(--machine-tab-line);
    border-top: 0;
    border-radius: 0 12px 12px 12px;
    padding: 0.9rem;
}

.machine-tab-panel.active {
    display: block;
}

.machine-tab-panel > .card {
    margin-bottom: 0;
}

@media (max-width: 700px) {
    .machine-tab-list {
        flex-wrap: wrap;
    }

    .machine-tab {
        flex: 1 1 calc(33.33% - 0.45rem);
        text-align: center;
        top: 0;
    }

    .machine-tab-panel {
        border-top: 1px solid var(--machine-tab-line);
        border-radius: 12px;
    }
}

.modal-open {
    overflow: hidden;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(16, 42, 67, 0.45);
    display: grid;
    place-items: center;
    padding: 1rem;
    z-index: 999;
}

.modal[hidden] {
    display: none;
}

.modal-card {
    width: auto;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    padding: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.muted {
    color: var(--ink-soft);
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.2rem;
}

.auth-panel {
    width: min(460px, 100%);
    animation: reveal 0.35s ease-out;
}

.auth-panel h1 {
    margin-top: 0;
    margin-bottom: 0.3rem;
}

.auth-switch {
    margin-top: 0.6rem;
    margin-bottom: 0;
}

@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .app-shell {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        gap: 0.8rem;
    }

    .sidebar-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .main-panel {
        padding-top: 1rem;
    }
}

/* Mobile topbar and collapsible sidebar */
.mobile-topbar {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.55rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

.mobile-brand {
    font-weight: 700;
    color: var(--ink);
}

.mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--surface-soft);
    color: var(--primary-strong);
    cursor: pointer;
}

@media (max-width: 900px) {
    .mobile-topbar {
        display: flex;
    }

    /* Collapse sidebar by default on small screens */
    .sidebar {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 240ms ease-in-out, padding 160ms ease-in-out;
        padding-top: 0;
        padding-bottom: 0;
    }

    /* When menu open, expand sidebar */
    .app-shell.menu-open .sidebar {
        max-height: 100vh;
        padding-top: 0.9rem;
        padding-bottom: 0.9rem;
    }

    /* keep sidebar-footer visible only when expanded */
    .sidebar-footer {
        opacity: 0;
        transition: opacity 160ms ease-in-out;
    }

    .app-shell.menu-open .sidebar-footer {
        opacity: 1;
    }
}

@media (max-width: 580px) {
    .sidebar-nav {
        grid-template-columns: 1fr;
    }

    .main-panel {
        padding: 0.9rem;
    }
}