/* Expense Notes — layout and components */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f0f4f8;
    --surface: #ffffff;
    --text: #1a2332;
    --text-muted: #5c6b7a;
    --border: #d8e0e8;
    --accent: #0d9488;
    --accent-hover: #0f766e;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --danger-bg: #fef2f2;
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #065f46;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --error-text: #991b1b;
    --link: #0d9488;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(26, 35, 50, 0.08), 0 4px 12px rgba(26, 35, 50, 0.06);
    --focus-ring: 0 0 0 3px rgba(13, 148, 136, 0.35);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    padding: 1.25rem 1rem 2.5rem;
}

.page {
    max-width: 40rem;
    margin: 0 auto;
}

.site-header {
    margin-bottom: 1.5rem;
}

.site-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.site-header p {
    margin-top: 0.35rem;
    font-size: 0.9375rem;
    color: var(--text-muted);
}

main {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.banner {
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 0;
    font-size: 0.9375rem;
    border: 1px solid transparent;
}

.banner--success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

.banner--error {
    background: var(--error-bg);
    color: var(--error-text);
    border-color: var(--error-border);
}

.card {
    background: var(--surface);
    padding: 1.25rem 1.35rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text);
}

label.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

input,
textarea {
    width: 100%;
    padding: 0.75rem 0.875rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text);
    background: var(--surface);
    transition: border-color 0.15s, box-shadow 0.15s;
}

textarea {
    min-height: 5.5rem;
    resize: vertical;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

.form-row {
    display: flex;
    gap: 0.75rem;
}

.form-row input {
    flex: 1;
    margin-bottom: 0.75rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.625rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

.btn:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn--primary {
    width: 100%;
    background: var(--accent);
    color: #fff;
}

.btn--primary:hover {
    background: var(--accent-hover);
}

.btn--danger {
    min-height: 2.75rem;
    padding: 0.5rem 0.875rem;
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid #fecaca;
    font-size: 0.875rem;
}

.btn--danger:hover {
    background: #fee2e2;
    color: var(--danger-hover);
}

.btn--ghost {
    min-height: 2.75rem;
    padding: 0.5rem 0.875rem;
    background: transparent;
    color: var(--link);
    border: 1px solid var(--border);
    font-size: 0.875rem;
}

.btn--ghost:hover {
    background: #f0fdfa;
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 0.25rem;
}

.form-actions .btn--primary {
    width: auto;
    flex: 1;
    min-width: 8rem;
}

.expense-list {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}

.expense-list-header {
    padding: 1rem 1.25rem;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

.expense-item {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.75rem 1rem;
    align-items: start;
}

.expense-item:last-child {
    border-bottom: none;
}

.expense-body {
    min-width: 0;
}

.expense-note {
    color: var(--text);
    font-size: 0.9375rem;
    line-height: 1.45;
    word-break: break-word;
}

.expense-email {
    margin-top: 0.35rem;
    font-size: 0.8125rem;
    color: #0369a1;
}

.expense-side {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.35rem;
}

.expense-date {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.expense-time {
    font-size: 0.6875rem;
    color: #94a3b8;
    white-space: nowrap;
}

.expense-actions {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    padding-top: 0.25rem;
}

.expense-actions form {
    display: inline;
}

.empty {
    padding: 2.5rem 1.25rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.empty strong {
    display: block;
    color: var(--text);
    margin-bottom: 0.35rem;
    font-size: 1rem;
}

@media (max-width: 520px) {
    body {
        padding: 1rem 0.75rem 2rem;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .expense-item {
        grid-template-columns: 1fr;
    }

    .expense-side {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
        width: 100%;
    }

    .expense-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .expense-actions .btn--ghost,
    .expense-actions .btn--danger {
        width: 100%;
    }
}