:root {
    --ct-blue: #1557d6;
    --ct-blue-dark: #0e3f9f;
    --ct-blue-soft: #e8f0ff;
    --ct-navy: #0d2f68;
    --ct-green: #18924f;
    --ct-green-soft: #eaf8ef;
    --ct-red: #cf3c45;
    --ct-red-soft: #fff0f1;
    --ct-amber: #d08a00;
    --ct-amber-soft: #fff4da;
    --ct-text: #13213c;
    --ct-text-muted: #5d6b85;
    --ct-border: #dbe4f1;
    --ct-surface: #ffffff;
    --ct-surface-alt: #f6f9ff;
    --ct-background: #eef4fb;
    --ct-shadow: 0 10px 30px rgba(18, 39, 82, 0.08);
    --ct-radius-lg: 24px;
    --ct-radius-md: 18px;
    --ct-radius-sm: 14px;
    --ct-header-height: 80px;
    --ct-bottom-nav-height: 78px;
    --ct-page-padding: 20px;
    --ct-touch-target: 44px;
    --ct-max-width: 980px;
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    color: var(--ct-text);
    background: var(--ct-background);
}

html, body {
    margin: 0;
    min-height: 100%;
    background: var(--ct-background);
    color: var(--ct-text);
}

a {
    color: inherit;
    text-decoration: none;
}

button,
a,
input,
select,
textarea {
    font: inherit;
}

button {
    border: 0;
    background: none;
    color: inherit;
}

#blazor-error-ui {
    display: none;
}

.app-shell {
    min-height: 100vh;
    padding-bottom: calc(var(--ct-bottom-nav-height) + env(safe-area-inset-bottom));
}

/* When no bottom nav is rendered (detail pages), don't leave the gap */
.app-shell--no-nav {
    padding-bottom: 0;
}

.app-header {
    height: calc(var(--ct-header-height) + env(safe-area-inset-top));
    padding: env(safe-area-inset-top) var(--ct-page-padding) 0;
    background: linear-gradient(180deg, var(--ct-navy), var(--ct-blue-dark));
    color: #fff;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--ct-shadow);
    position: sticky;
    top: 0;
    z-index: 20;
}

.app-header__left,
.app-header__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.app-header__actions {
    margin-left: auto;
}

.app-header__title {
    flex: 1;
    text-align: center;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.app-header__brand,
.app-header__back,
.header-action {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: var(--ct-touch-target);
}

.app-header__brand {
    font-size: 1.2rem;
    font-weight: 700;
}

.app-header__back {
    color: #fff;
    font-weight: 600;
}

.header-action {
    border-radius: 999px;
    padding: 0 14px;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.header-action--icon {
    width: var(--ct-touch-target);
    justify-content: center;
    padding: 0;
}

.page-container {
    width: min(var(--ct-max-width), calc(100vw - (var(--ct-page-padding) * 2)));
    margin: 0 auto;
    padding: 18px 0 28px;
}

.page-hero,
.hero-card,
.section-card,
.service-card {
    background: var(--ct-surface);
    border: 1px solid var(--ct-border);
    border-radius: var(--ct-radius-lg);
    box-shadow: var(--ct-shadow);
    margin-bottom: 18px;
}

.page-hero {
    padding: 24px;
}

.page-hero h1,
.hero-card h1,
.service-card h1,
.section-card h2 {
    margin: 0;
    letter-spacing: -0.03em;
}

.page-hero p,
.hero-card p,
.service-card p {
    margin: 6px 0 0;
    color: var(--ct-text-muted);
}

.hero-card {
    padding: 22px;
}

.hero-card__header,
.service-card__header,
.section-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.hero-card__link,
.section-card__header a,
.secondary-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ct-blue);
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin: 18px 0;
}

.stats-grid--tight {
    margin-top: 22px;
}

.stats-grid--reports {
    margin-top: 0;
}

.stat-tile,
.summary-box {
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: var(--ct-radius-md);
    border: 1px solid var(--ct-border);
    padding: 18px;
}

.stat-tile strong,
.summary-box strong {
    display: block;
    font-size: 2rem;
    line-height: 1;
}

.stat-tile span,
.summary-box span,
.list-row span,
.attendance-row__body span,
.person-row__body span {
    display: block;
    color: var(--ct-text-muted);
}

.stat-tile--present,
.summary-box--present {
    background: var(--ct-green-soft);
    color: var(--ct-green);
}

.stat-tile--missing,
.summary-box--missing {
    background: var(--ct-red-soft);
    color: var(--ct-red);
}

.hero-actions {
    display: grid;
    gap: 12px;
}

.primary-button,
.secondary-button,
.ghost-action,
.filter-chip,
.tab-strip__item,
.icon-button {
    min-height: 44px;
}

.primary-button,
.secondary-button,
.ghost-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 16px;
    font-weight: 700;
}

.primary-button {
    background: linear-gradient(180deg, var(--ct-blue), var(--ct-blue-dark));
    color: #fff;
    padding: 0 18px;
    box-shadow: var(--ct-shadow);
}

.primary-button--full {
    width: 100%;
    margin: 0 0 14px;
}

.secondary-button {
    border: 1px solid var(--ct-blue);
    background: #fff;
    padding: 0 18px;
}

.secondary-button--small {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 14px;
}

.auth-page {
    padding-top: 10px;
}

.auth-form {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.auth-field {
    display: grid;
    gap: 8px;
    font-weight: 600;
}

.auth-input {
    min-height: 48px;
    border: 1px solid var(--ct-border);
    border-radius: 16px;
    padding: 0 16px;
    background: #fff;
    color: var(--ct-text);
}

.auth-error {
    margin: 0;
    color: var(--ct-red);
    font-weight: 600;
}

.section-card {
    padding: 18px;
}

.section-card__header {
    margin-bottom: 16px;
}

.section-title-block {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.list-card {
    border-top: 1px solid var(--ct-border);
}

.list-row,
.attendance-row,
.person-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid var(--ct-border);
}

.list-row:last-child,
.attendance-row:last-child,
.person-row:last-child {
    border-bottom: 0;
}

.list-row {
    justify-content: space-between;
}

.list-row__meta,
.muted-count,
.person-type--muted {
    color: var(--ct-text-muted);
}

.service-card {
    padding: 18px;
}

.service-card__identity {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.service-card__summary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    width: 100%;
}

.service-card__header--compact {
    align-items: center;
}

.summary-box {
    justify-content: center;
    text-align: center;
    padding: 16px 14px;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 54px;
    border: 1px solid var(--ct-border);
    border-radius: 18px;
    background: var(--ct-surface);
    padding: 0 16px;
    color: var(--ct-text-muted);
    margin-bottom: 14px;
}

.icon-button {
    margin-left: auto;
    width: 44px;
    border-radius: 12px;
    background: var(--ct-surface-alt);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.tab-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--ct-border);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 12px;
}

.tab-strip__item {
    background: #fff;
    color: var(--ct-text);
    font-weight: 700;
}

.tab-strip__item + .tab-strip__item {
    border-left: 1px solid var(--ct-border);
}

.tab-strip__item--active {
    background: var(--ct-blue);
    color: #fff;
}

.avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    background: #e8f0ff;
    color: var(--ct-blue);
    font-weight: 800;
}

.avatar--soft {
    background: #eef7f2;
    color: var(--ct-green);
}

.attendance-row__body,
.person-row__body {
    flex: 1 1 auto;
}

.attendance-row__body strong,
.person-row__body strong {
    display: block;
    margin-bottom: 4px;
}

.ghost-action {
    padding: 0 14px;
    border: 1px solid var(--ct-green);
    color: var(--ct-green);
    background: #fff;
}

.person-row__state {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ct-green);
    font-weight: 700;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid var(--ct-border);
    border-radius: 14px;
    background: #fff;
    font-weight: 700;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 700;
}

.status-pill--success {
    background: var(--ct-green-soft);
    color: var(--ct-green);
}

.status-pill--warning {
    background: var(--ct-amber-soft);
    color: var(--ct-amber);
}

.status-pill--danger {
    background: var(--ct-red-soft);
    color: var(--ct-red);
}

.bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    min-height: calc(var(--ct-bottom-nav-height) + env(safe-area-inset-bottom));
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(18px);
    border-top: 1px solid rgba(219, 228, 241, 0.95);
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    z-index: 25;
}

.bottom-nav__item {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: 54px;
    border-radius: 16px;
    color: var(--ct-text-muted);
    font-size: 0.82rem;
    font-weight: 600;
}

.bottom-nav__item.active {
    color: var(--ct-blue);
}

.bottom-nav__item.active .app-icon {
    color: var(--ct-blue);
}

.app-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    color: currentColor;
}

.app-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
}

.eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ct-blue);
    font-weight: 800;
    margin-bottom: 8px;
}

.muted-count {
    margin: 2px 0 12px;
    font-size: 0.98rem;
}

/* ── Desktop responsive layout ─────────────────────────────────────────── */
@media (min-width: 900px) {

    /* On desktop the app-shell is a side-by-side layout:
       left sidebar nav + right content area */
    .app-shell {
        display: grid;
        grid-template-columns: 220px 1fr;
        grid-template-rows: auto 1fr;
        grid-template-areas:
            "header header"
            "sidebar content";
        min-height: 100vh;
        padding-bottom: 0;
    }

    /* Pages with no sidebar nav: single-column layout */
    .app-shell--no-nav {
        grid-template-columns: 1fr;
        grid-template-areas:
            "header"
            "content";
        padding-bottom: 0;
    }

    .app-header {
        grid-area: header;
        position: sticky;
        top: 0;
    }

    /* Sidebar nav replaces bottom nav on desktop */
    .bottom-nav {
        grid-area: sidebar;
        position: sticky;
        top: var(--ct-header-height);
        height: calc(100vh - var(--ct-header-height));
        left: auto;
        right: auto;
        bottom: auto;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 20px 12px;
        border-top: none;
        border-right: 1px solid var(--ct-border);
        background: var(--ct-surface);
        backdrop-filter: none;
        min-height: unset;
        z-index: 10;
        overflow-y: auto;
    }

    .bottom-nav__item {
        flex-direction: row;
        justify-content: flex-start;
        gap: 12px;
        padding: 0 14px;
        font-size: 0.94rem;
        border-radius: 14px;
        min-height: 48px;
    }

    .bottom-nav__item.active {
        background: var(--ct-blue-soft);
    }

    /* Content area */
    main.page-container {
        grid-area: content;
        width: min(var(--ct-max-width), calc(100% - (var(--ct-page-padding) * 2)));
        margin: 0 auto;
        padding-top: 28px;
    }
}

@media (min-width: 1200px) {
    .app-shell {
        grid-template-columns: 240px 1fr;
    }

    .app-shell--no-nav {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .filter-row {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* ── Attendance-specific components ────────────────────────────────────── */

.present-count-bar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 4px;
}

.search-bar__input {
    flex: 1 1 auto;
    border: 0;
    outline: none;
    background: transparent;
    color: var(--ct-text);
    font-size: 1rem;
    min-width: 0;
}

.search-bar__input::placeholder {
    color: var(--ct-text-muted);
}

/* ── Spinner ─────────────────────────────────────────────────────────────── */

.spinner {
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 3px solid var(--ct-border);
    border-top-color: var(--ct-blue);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.spinner--small {
    width: 18px;
    height: 18px;
    border-width: 2px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ── Empty state ─────────────────────────────────────────────────────────── */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    color: var(--ct-text-muted);
    gap: 8px;
}

.empty-state p {
    margin: 0;
    font-size: 1rem;
}

/* ── Quick Add bottom sheet ─────────────────────────────────────────────── */

.quick-add-overlay {
    position: fixed;
    inset: 0;
    background: rgba(13, 47, 104, 0.45);
    z-index: 40;
    animation: fade-in 0.15s ease;
}

.quick-add-sheet {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    background: var(--ct-surface);
    border-radius: var(--ct-radius-lg) var(--ct-radius-lg) 0 0;
    padding: 24px var(--ct-page-padding) calc(24px + env(safe-area-inset-bottom));
    box-shadow: 0 -8px 40px rgba(18, 39, 82, 0.18);
    animation: slide-up 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
    max-width: 560px;
    margin: 0 auto;
}

@media (min-width: 600px) {
    .quick-add-overlay {
        backdrop-filter: blur(4px);
    }
    .quick-add-sheet {
        top: 50%;
        bottom: auto;
        left: 50%;
        right: auto;
        transform: translate(-50%, -50%);
        border-radius: var(--ct-radius-lg);
        width: 440px;
        animation: fade-in 0.18s ease;
    }
}

.quick-add-sheet__header {
    margin-bottom: 18px;
}

.quick-add-sheet__header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.quick-add-sheet__form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.quick-add-sheet__actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 4px;
}

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

.quick-add-field label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ct-text);
}

.form-input {
    height: 52px;
    border: 1px solid var(--ct-border);
    border-radius: 14px;
    padding: 0 14px;
    font-size: 1rem;
    background: var(--ct-surface);
    color: var(--ct-text);
    outline: none;
    transition: border-color 0.15s;
}

.form-input:focus {
    border-color: var(--ct-blue);
}

.form-input--error {
    border-color: var(--ct-red);
}

.field-error {
    font-size: 0.84rem;
    color: var(--ct-red);
    font-weight: 600;
}

.quick-add-error {
    background: var(--ct-red-soft);
    color: var(--ct-red);
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 0.9rem;
    font-weight: 600;
}

@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slide-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}