:root {
    color-scheme: light;
    --background: #f4f7f5;
    --surface: #ffffff;
    --text: #17221c;
    --muted: #526158;
    --border: #cfd9d2;
    --primary: #17633d;
    --primary-hover: #0f4c2d;
    --primary-soft: #e1f2e8;
    --occupied: #8b2e2e;
    --occupied-soft: #f8e7e7;
    --unavailable: #4f5a53;
    --unavailable-soft: #e9eeeb;
    --danger: #9a2929;
    --danger-hover: #751d1d;
    --radius: 14px;
    --shadow: 0 2px 8px rgb(22 50 34 / 8%);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 100%;
    scroll-behavior: smooth;
}

body {
    display: flex;
    min-width: 0;
    min-height: 100vh;
    margin: 0;
    flex-direction: column;
    overflow-wrap: anywhere;
    background: var(--background);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1.125rem;
    line-height: 1.6;
}

button,
input {
    font: inherit;
}

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

h1,
h2,
h3,
p {
    margin-block-start: 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
    text-wrap: balance;
}

h1 {
    margin-block-end: 1rem;
    font-size: clamp(2rem, 7vw, 3.25rem);
    letter-spacing: -0.025em;
}

h2 {
    margin-block-end: 0.75rem;
    font-size: clamp(1.5rem, 4vw, 2rem);
}

h3 {
    margin-block-end: 0.5rem;
    font-size: clamp(1.3rem, 3vw, 1.55rem);
}

.skip-link {
    position: fixed;
    z-index: 100;
    inset-block-start: 0.5rem;
    inset-inline-start: 0.5rem;
    padding: 0.75rem 1rem;
    transform: translateY(-160%);
    border-radius: 8px;
    background: var(--text);
    color: #fff;
}

.skip-link:focus {
    transform: translateY(0);
}

:focus-visible {
    outline: none;
}

.page-shell {
    width: min(100% - 2rem, 72rem);
    margin-inline: auto;
    padding-block: clamp(2rem, 6vw, 4rem);
    flex: 1 0 auto;
}

.site-footer {
    display: flex;
    justify-content: center;
    padding: 1.25rem 1rem 1.75rem;
}

.settings-toggle {
    width: 100%;
    margin-block: 1rem 0;
}

.settings-toggle + .form-card {
    margin-block-start: 1rem;
}

.site-footer__link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 650;
    text-decoration: none;
}

.site-footer__link:hover {
    color: var(--text);
}

.site-footer__icon {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 0.35rem;
    object-fit: cover;
}

.form-page .page-shell,
.admin-page .page-shell {
    width: min(100% - 2rem, 62rem);
}

.page-header {
    margin-block-end: 2.5rem;
}

.page-header--compact {
    margin-block-end: 2rem;
}

.intro {
    margin-block-end: 0;
    color: var(--muted);
    font-size: clamp(1.15rem, 3vw, 1.35rem);
}

.section-heading {
    margin-block: 2.5rem 1.25rem;
}

.section-heading p {
    margin-block-end: 0;
    color: var(--muted);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.day-card {
    min-width: 0;
    padding: clamp(1.25rem, 4vw, 1.75rem);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.day-card--free {
    border-inline-start: 8px solid var(--primary);
}

.day-card--occupied {
    border-inline-start: 8px solid var(--occupied);
    background: #fffafa;
}

.day-card--unavailable {
    border-inline-start: 8px solid var(--unavailable);
    background: #f5f7f6;
}

.day-card__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-block-end: 1rem;
}

.day-card__top h3 {
    margin: 0;
}

.today-label {
    display: block;
    margin-block-start: 0.35rem;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.status {
    display: inline-flex;
    flex: none;
    align-items: center;
    gap: 0.45rem;
    min-height: 2.25rem;
    padding: 0.3rem 0.7rem;
    border: 1px solid currentcolor;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 800;
    line-height: 1.2;
}

.status::before {
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: currentcolor;
    content: "";
}

.status--free {
    background: var(--primary-soft);
    color: var(--primary-hover);
}

.status--occupied {
    background: var(--occupied-soft);
    color: var(--occupied);
}

.status--unavailable {
    background: var(--unavailable-soft);
    color: var(--unavailable);
}

.reserved-time {
    margin-block: 1.25rem 0;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    background: var(--unavailable-soft);
}

.slot-list {
    display: grid;
    gap: 0.75rem;
    margin-block-start: 1.25rem;
}

.button {
    display: inline-flex;
    min-height: 3.25rem;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.15rem;
    border: 2px solid transparent;
    border-radius: 9px;
    cursor: pointer;
    font-weight: 800;
    line-height: 1.3;
    text-align: center;
    text-decoration: none;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button--primary {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.button--primary:hover {
    border-color: var(--primary-hover);
    background: var(--primary-hover);
}

.button--secondary {
    border-color: var(--primary);
    background: var(--surface);
    color: var(--primary-hover);
}

.button--secondary:hover {
    background: var(--primary-soft);
}

.button--danger {
    border-color: var(--danger);
    background: var(--danger);
    color: #fff;
}

.button--danger:hover {
    border-color: var(--danger-hover);
    background: var(--danger-hover);
}

.button--small {
    min-height: 3rem;
    padding: 0.55rem 1rem;
}

.notice {
    margin-block: 1.5rem;
    padding: 1rem 1.25rem;
    border: 2px solid currentcolor;
    border-radius: 10px;
    background: var(--surface);
    font-weight: 650;
}

.notice--success {
    background: var(--primary-soft);
    color: var(--primary-hover);
}

.notice--error {
    background: var(--occupied-soft);
    color: #721f1f;
}

.form-card,
.confirm-card {
    padding: clamp(1.25rem, 5vw, 2rem);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.form-card--narrow {
    max-width: 35rem;
}

.confirm-card {
    margin-block: 2rem;
    border-color: var(--occupied);
    scroll-margin-block-start: 1.5rem;
}

.choice-summary {
    display: grid;
    gap: 0;
    margin-block: 1rem 2rem;
    border-block: 1px solid var(--border);
}

.choice-summary div {
    display: grid;
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 1rem;
    padding-block: 1rem;
}

.choice-summary div + div {
    border-block-start: 1px solid var(--border);
}

.choice-summary dt {
    color: var(--muted);
    font-weight: 700;
}

.choice-summary dd {
    margin: 0;
    font-weight: 800;
}

.form-group {
    margin-block-end: 1.5rem;
}

.form-group label {
    display: block;
    margin-block-end: 0.35rem;
    font-weight: 800;
}

.field-help {
    margin-block-end: 0.5rem;
    color: var(--muted);
}

input[type="text"],
input[type="password"],
input[type="time"] {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid #819087;
    border-radius: 8px;
    background: #fff;
    color: var(--text);
}

input[type="text"]:focus,
input[type="text"]:active,
input[type="password"]:focus,
input[type="password"]:active,
input[type="time"]:focus,
input[type="time"]:active {
    border-width: 2px;
    outline: none;
}

input:user-invalid {
    border-color: var(--occupied);
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-block-start: 1.5rem;
}

fieldset {
    min-width: 0;
    margin: 1.5rem 0;
    padding: 1.25rem;
    border: 2px solid var(--border);
    border-radius: 10px;
}

legend {
    padding-inline: 0.4rem;
    font-weight: 800;
}

.time-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.time-fields .form-group {
    margin: 0;
}

.admin-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-block-end: 2rem;
}

.admin-header h1 {
    margin: 0;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-block-end: 3rem;
}

.summary-card {
    display: flex;
    min-width: 0;
    min-height: 9rem;
    flex-direction: column;
    justify-content: center;
    padding: 1.25rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
}

.summary-card__value {
    color: var(--primary-hover);
    font-size: 2.25rem;
    font-weight: 850;
    line-height: 1.15;
}

.summary-card__value--date {
    font-size: 1.2rem;
}

.admin-visit-list {
    display: grid;
    gap: 1rem;
    margin-block-end: 3rem;
}

.admin-visit-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.4rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
}

.admin-visit-card h3 {
    margin-block-end: 0.75rem;
}

.admin-visit-card p {
    margin-block-end: 0.35rem;
}

.admin-visit-card .reserved-time {
    display: inline-block;
    margin-block: 0 0.5rem;
}

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

.empty-state {
    margin-block-end: 3rem;
    padding: 2rem;
    border: 2px dashed var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--muted);
    text-align: center;
}

@media (max-width: 48rem) {
    .calendar-grid,
    .summary-grid {
        grid-template-columns: 1fr;
    }

    .summary-card {
        min-height: auto;
    }
}

@media (max-width: 36rem) {
    .page-shell {
        width: min(100% - 1.25rem, 72rem);
        padding-block: 1.5rem 2.5rem;
    }

    .day-card__top,
    .admin-header,
    .admin-visit-card {
        align-items: stretch;
        flex-direction: column;
    }

    .status {
        align-self: flex-start;
    }

    .time-fields {
        grid-template-columns: 1fr;
    }

    .choice-summary div {
        grid-template-columns: 1fr;
        gap: 0.2rem;
    }

    .form-actions,
    .form-actions .button,
    .admin-visit-card > .button,
    .admin-header form,
    .admin-header form .button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
    }
}

@media (forced-colors: active) {
    .day-card,
    .notice,
    .status,
    .button {
        border-color: CanvasText;
    }
}