:root {
    color-scheme: light dark;

    --bg: #f3f4f6;
    --card: #ffffff;
    --card-soft: #f9fafb;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;

    --primary: #2563eb;
    --primary-text: #ffffff;

    --secondary: #e5e7eb;
    --secondary-text: #111827;

    --danger: #dc2626;
    --danger-text: #ffffff;

    --warning-bg: #fef3c7;
    --warning-text: #92400e;

    --success-bg: #dcfce7;
    --success-text: #166534;

    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #020617;
        --card: #111827;
        --card-soft: #1f2937;
        --text: #f9fafb;
        --muted: #9ca3af;
        --border: #374151;

        --primary: #3b82f6;
        --primary-text: #ffffff;

        --secondary: #374151;
        --secondary-text: #f9fafb;

        --danger: #ef4444;
        --danger-text: #ffffff;

        --warning-bg: #451a03;
        --warning-text: #fcd34d;

        --success-bg: #052e16;
        --success-text: #86efac;

        --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    }
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    padding-bottom: calc(76px + env(safe-area-inset-bottom));
}

a {
    color: inherit;
}

.app-shell {
    width: min(760px, 100%);
    margin: 0 auto;
    padding: calc(16px + env(safe-area-inset-top)) 16px 24px;
}

.app-shell.compact {
    max-width: 560px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
}

.app-header h1 {
    margin: 0;
    font-size: 1.75rem;
    line-height: 1.1;
}

.app-header p {
    margin: 4px 0 0;
    color: var(--muted);
}

.icon-link {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 48px;
    width: 48px;
    height: 48px;
    text-decoration: none;
    border-radius: 999px;
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-size: 1.2rem;
}

.quick-action {
    margin-bottom: 20px;
}

.mode-hint {
    margin-top: -8px;
    margin-bottom: 14px;
}

.card,
.fuel-card,
.empty-state {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 16px;
    box-shadow: var(--shadow);
}

.card {
    margin-bottom: 16px;
}

.card h2,
.month-block h2,
.empty-state h2 {
    margin-top: 0;
}

.empty-state {
    text-align: center;
    color: var(--muted);
}

.mobile-form {
    display: grid;
    gap: 14px;
}

label {
    display: grid;
    gap: 7px;
    font-weight: 700;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 10px 0;
}

.checkbox-label input[type="checkbox"] {
    width: 22px;
    min-height: 22px;
    height: 22px;
}

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

input,
select,
textarea {
    width: 100%;
    min-height: 48px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--card-soft);
    color: var(--text);
    padding: 12px 14px;
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

textarea {
    min-height: 96px;
    resize: vertical;
}

.two-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.primary-button,
.secondary-button,
.danger-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    border: 0;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 800;
    cursor: pointer;
    padding: 14px 18px;
}

.big-button {
    width: 100%;
    font-size: 1.05rem;
}

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

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

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

.month-block {
    margin-top: 28px;
}

.month-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.month-heading h2 {
    margin: 0;
    font-size: 1.25rem;
}

.month-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.month-summary.month-summary-simple {
    grid-template-columns: 1fr;
}

.month-summary > div {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 10px;
}

.summary-label {
    display: block;
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 2px;
}

.fuel-card {
    margin-bottom: 12px;
    padding: 0;
    overflow: hidden;
}

.fuel-card-link {
    display: block;
    padding: 16px;
    text-decoration: none;
}

.fuel-card-main {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 14px;
}

.fuel-date {
    font-weight: 800;
}

.fuel-date span {
    display: block;
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.95rem;
}

.fuel-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
}

.fuel-data-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 14px;
}

.station-name,
.receipt-present,
.hint {
    color: var(--muted);
}

.station-name {
    margin-bottom: 0;
}

.receipt-present {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 5px 9px;
    border-radius: 999px;
    background: var(--card-soft);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
    white-space: nowrap;
}

.status-completed {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: transparent;
}

.status-draft,
.warning {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-color: transparent;
}

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

.receipt-preview {
    width: 100%;
    max-height: 480px;
    object-fit: contain;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--card-soft);
    margin-bottom: 16px;
}

.bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;

    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;

    width: min(760px, 100%);
    margin: 0 auto;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));

    background: var(--bg);
    border-top: 1px solid var(--border);
}

.bottom-nav a {
    min-height: 48px;
    border-radius: 16px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    background: var(--card);
    border: 1px solid var(--border);
    font-weight: 800;
}

.bottom-nav .bottom-primary {
    background: var(--primary);
    color: var(--primary-text);
    border-color: var(--primary);
}

@media (max-width: 420px) {
    .app-header h1 {
        font-size: 1.55rem;
    }

    .month-summary {
        grid-template-columns: 1fr;
    }

    .two-cols {
        grid-template-columns: 1fr;
    }

    .fuel-data-grid {
        grid-template-columns: 1fr;
    }
}