:root {
    --bg: #FAFAF7;
    --ink: #1C1C1A;
    --muted: #6B6B66;
    --line: #E2E2DC;
    --accent: #2A5D4E;
    --accent-ink: #FFFFFF;
    --danger: #A33A2C;
    --ring: rgba(42, 93, 78, 0.4);
    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --radius: 0.5rem;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #141413;
        --ink: #F2F2EE;
        --muted: #9C9C95;
        --line: #2A2A27;
        --accent: #7FB69F;
        --accent-ink: #141413;
        --ring: rgba(127, 182, 159, 0.4);
    }
}

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

[hidden] {
    display: none !important;
}

html {
    font-size: 18px;
    -webkit-text-size-adjust: 100%;
}

@media (min-width: 640px) {
    html {
        font-size: 19px;
    }
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, system-ui, sans-serif;
    line-height: 1.5;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

.container {
    max-width: 40rem;
    margin: 0 auto;
    padding: var(--space-4) calc(1.25rem + env(safe-area-inset-right)) var(--space-6) calc(1.25rem + env(safe-area-inset-left));
}

h1,
h2 {
    font-weight: 600;
    line-height: 1.2;
    margin: 0;
}

h1 {
    font-size: 1.75rem;
}

h2 {
    font-size: 1.25rem;
}

p {
    margin: 0;
}

/* Header */

.day-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.day-date {
    color: var(--muted);
    margin-top: 0.125rem;
}

.day-nav {
    display: flex;
    gap: var(--space-1);
    flex-shrink: 0;
}

/* Sections and fields */

.section {
    margin-bottom: var(--space-5);
}

.field {
    margin-bottom: var(--space-4);
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

label,
legend {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: var(--space-1);
    padding: 0;
}

.input {
    display: block;
    width: 100%;
    min-height: 3rem;
    padding: 0.75rem 1rem;
    font: inherit;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    appearance: none;
    -webkit-appearance: none;
}

.input::placeholder {
    color: var(--muted);
    opacity: 0.7;
}

.input:focus,
.button:focus-visible,
.link:focus-visible,
a:focus-visible,
.switch input:focus-visible ~ .switch-track,
.feet-option input:focus-visible ~ .feet-number {
    outline: 3px solid var(--ring);
    outline-offset: 0;
}

.input:focus {
    border-color: var(--accent);
}

.input-large {
    font-size: 1.25rem;
    min-height: 3.5rem;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

textarea.input {
    resize: vertical;
    min-height: 8rem;
    line-height: 1.5;
}

.input-unit {
    position: relative;
}

.input-unit .input {
    padding-right: 4rem;
}

.input-unit-left .input {
    padding-left: 2.25rem;
    padding-right: 1rem;
}

.unit {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
}

.unit-left {
    left: 1rem;
    right: auto;
}

.hint {
    font-size: 0.9rem;
    color: var(--muted);
    margin-top: var(--space-1);
    min-height: 1.35rem;
}

.readonly-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 3rem;
}

.readonly-value {
    font-weight: 600;
}

/* Buttons and links */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.5rem 1rem;
    font: inherit;
    font-weight: 600;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    text-decoration: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

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

.button-primary:disabled {
    opacity: 0.6;
    cursor: default;
}

.button-save {
    width: 100%;
    min-height: 3.25rem;
    font-size: 1.1rem;
}

.button-small {
    min-height: 2.75rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.link {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    padding: 0;
    font: inherit;
    font-size: 0.9rem;
    color: var(--muted);
    background: none;
    border: 0;
    text-decoration: underline;
    text-underline-offset: 0.15em;
    cursor: pointer;
}

.link-danger {
    color: var(--danger);
}

/* Switch */

.switch {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 2.75rem;
    font-size: 1rem;
    color: var(--ink);
    margin: 0;
    cursor: pointer;
    position: relative;
}

.switch input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    margin: 0;
}

.switch-track {
    flex-shrink: 0;
    width: 3.25rem;
    height: 2rem;
    border-radius: 1rem;
    background: var(--line);
    position: relative;
    transition: background 0.15s ease;
}

.switch-track::after {
    content: "";
    position: absolute;
    top: 0.25rem;
    left: 0.25rem;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--bg);
    border: 1px solid var(--line);
    transition: transform 0.15s ease;
}

.switch input:checked ~ .switch-track {
    background: var(--accent);
}

.switch input:checked ~ .switch-track::after {
    transform: translateX(1.25rem);
    border-color: var(--accent);
}

.switch-label {
    font-weight: 500;
}

.day-form:has(#rest_day:checked) .distance-field {
    display: none;
}

/* Feet */

.feet {
    border: 0;
    padding: 0;
    margin-inline: 0;
    min-width: 0;
}

.feet-options {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-1);
}

.feet-option {
    display: block;
    margin: 0;
    position: relative;
    text-align: center;
    color: var(--ink);
    cursor: pointer;
}

.feet-option input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    margin: 0;
}

.feet-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
}

.feet-option input:checked ~ .feet-number {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
}

.feet-word {
    display: block;
    font-size: 0.8rem;
    color: var(--muted);
    min-height: 1.2rem;
    margin-top: 0.25rem;
}

/* Feedback */

.flash {
    margin-top: var(--space-3);
    text-align: center;
    font-weight: 500;
}

.draft-note {
    text-align: center;
}

.error {
    color: var(--danger);
    font-size: 0.9rem;
    margin-top: var(--space-1);
}

.error-box {
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-4);
    color: var(--danger);
    font-size: 0.9rem;
}

.error-box ul {
    margin: var(--space-1) 0 0;
    padding-left: 1.25rem;
}

/* Expenses */

.expenses {
    border-top: 1px solid var(--line);
    padding-top: var(--space-4);
}

.expenses-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.expenses-total {
    font-weight: 600;
}

.expense-list {
    list-style: none;
    margin: 0 0 var(--space-4);
    padding: 0;
}

.expense-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 2.75rem;
    border-bottom: 1px solid var(--line);
    padding: var(--space-1) 0;
}

.expense-amount {
    font-weight: 600;
    min-width: 5rem;
}

.expense-label {
    flex: 1;
    color: var(--ink);
    overflow-wrap: anywhere;
}

.expense-receipt {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.75rem;
    min-height: 2.75rem;
    color: var(--ink);
    text-decoration: none;
}

.expense-remove {
    margin: 0;
}

.expense-form {
    margin-top: var(--space-3);
}

.expense-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

.file-button {
    position: relative;
    overflow: hidden;
    margin: 0;
    font-size: 1rem;
    color: var(--ink);
}

.file-button input {
    position: absolute;
    inset: 0;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    font-size: 0;
}

.file-button:has(input:focus-visible) {
    outline: 3px solid var(--ring);
}

.file-button-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

/* Login */

.login {
    max-width: 22rem;
    margin: 15vh auto 0;
}

.login h1 {
    margin-bottom: var(--space-4);
}

.login .button {
    width: 100%;
    min-height: 3.25rem;
    font-size: 1.1rem;
}

/* Footer */

.footer {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--line);
}

.footer form {
    margin: 0;
}

@media (prefers-reduced-motion: reduce) {
    .switch-track,
    .switch-track::after {
        transition: none;
    }
}