:root {
    color-scheme: light dark;
    --bg: #f6f7f9;
    --surface: #ffffff;
    --surface-muted: #eef1f5;
    --text: #17202a;
    --text-muted: #5b6773;
    --border: #d7dde5;
    --accent: #1f6feb;
    --accent-contrast: #ffffff;
    --danger: #b42318;
    --danger-surface: #fef3f2;
    --success: #067647;
    --success-surface: #ecfdf3;
    --warning: #b54708;
    --warning-surface: #fffaeb;
    --radius: 12px;
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 1px 3px rgb(16 24 40 / 10%);
    --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d1117;
        --surface: #161b22;
        --surface-muted: #21262d;
        --text: #e6edf3;
        --text-muted: #9da7b3;
        --border: #30363d;
        --accent: #4493f8;
        --accent-contrast: #0d1117;
        --danger: #ff7b72;
        --danger-surface: #2d1214;
        --success: #3fb950;
        --success-surface: #0f2417;
        --warning: #d29922;
        --warning-surface: #2b2110;
        --shadow: none;
    }
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    line-height: 1.6;
    text-rendering: optimizeLegibility;
}

a {
    color: var(--accent);
    text-underline-offset: 3px;
}

a:hover {
    text-decoration-thickness: 2px;
}

h1,
h2 {
    line-height: 1.2;
    margin: 0 0 var(--space-2);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(1.75rem, 1.4rem + 1.4vw, 2.4rem);
}

h2 {
    font-size: 1.25rem;
}

p {
    margin: 0 0 var(--space-2);
}

.container {
    width: min(100% - 2 * var(--space-2), 880px);
    margin-inline: auto;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: var(--surface);
    color: var(--text);
    border-radius: var(--radius);
    z-index: 10;
}

.skip-link:focus {
    left: var(--space-2);
}

.site-header,
.site-footer {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.site-footer {
    border-top: 1px solid var(--border);
    border-bottom: 0;
    margin-top: var(--space-5);
    color: var(--text-muted);
}

.site-footer p {
    margin: 0;
    padding: var(--space-3) 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    min-height: 64px;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.main {
    padding-block: var(--space-4);
}

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

.inline-form {
    display: inline;
    margin: 0;
}

.link-button {
    appearance: none;
    background: none;
    border: 0;
    color: var(--accent);
    cursor: pointer;
    font: inherit;
    padding: 0;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px var(--space-2);
    border-radius: 10px;
    border: 1px solid transparent;
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

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

.button-primary:hover {
    filter: brightness(0.95);
}

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

.button-danger {
    background: var(--danger);
    color: var(--accent-contrast);
}

.button:focus-visible,
.link-button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.auth-card,
.form-card,
.detail-card,
.empty-state {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: var(--space-4);
    max-width: 640px;
}

.detail-card {
    max-width: 760px;
}

.empty-state {
    text-align: center;
}

.form {
    display: grid;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.field {
    display: grid;
    gap: var(--space-1);
}

.field label {
    font-weight: 600;
}

input,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
}

textarea {
    resize: vertical;
}

.errorlist {
    margin: 0;
    padding-left: 1.2em;
    color: var(--danger);
}

.form-errors {
    padding: var(--space-2);
    border: 1px solid var(--danger);
    border-radius: 10px;
    background: var(--danger-surface);
    color: var(--danger);
}

.form-errors ul {
    margin: 0;
    padding-left: 1.2em;
}

.messages {
    margin-bottom: var(--space-3);
}

.message {
    padding: var(--space-2);
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
}

.message-success {
    background: var(--success-surface);
    border-color: var(--success);
    color: var(--success);
}

.message-error {
    background: var(--danger-surface);
    border-color: var(--danger);
    color: var(--danger);
}

.page-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.reminder-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-2);
}

.reminder-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    flex-wrap: wrap;
}

.reminder-main {
    min-width: 0;
}

.reminder-title {
    font-weight: 700;
    font-size: 1.05rem;
}

.reminder-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.status {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--surface-muted);
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 600;
}

.status-pending {
    background: var(--warning-surface);
    color: var(--warning);
}

.status-sent,
.status-done {
    background: var(--success-surface);
    color: var(--success);
}

.status-failed,
.status-cancelled {
    background: var(--danger-surface);
    color: var(--danger);
}

.notes {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    padding: var(--space-2);
    background: var(--surface-muted);
    border-radius: 10px;
    margin: var(--space-2) 0;
}

.passkey-actions {
    margin: var(--space-2) 0;
}

.passkey-actions .button {
    width: 100%;
}

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: var(--space-3) 0;
}

@media (min-width: 640px) {
    .passkey-actions .button {
        width: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}