:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #111827;
    --muted: #64748b;
    --border: #dbe3ee;
    --dark: #0f172a;
    --green: #059669;
    --blue: #2563eb;
    --purple: #7c3aed;
    --red: #dc2626;
    --soft-green: #ecfdf5;
    --soft-blue: #eff6ff;
    --soft-purple: #f5f3ff;
    --shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
}

button,
input,
select {
    font: inherit;
}

input,
select {
    width: 100%;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0 12px;
    background: #fff;
    color: var(--text);
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--dark);
}

h1,
h2,
h3,
p {
    margin: 0;
}

h1 {
    font-size: 26px;
    line-height: 1.2;
}

h2 {
    font-size: 20px;
    line-height: 1.25;
}

h3 {
    font-size: 18px;
    line-height: 1.25;
}

p {
    color: var(--muted);
    line-height: 1.45;
}

.btn {
    height: 42px;
    border: 0;
    border-radius: 10px;
    padding: 0 14px;
    cursor: pointer;
    font-weight: 700;
    white-space: nowrap;
}

.btn:hover {
    opacity: 0.92;
}

.btn-dark {
    background: var(--dark);
    color: #fff;
}

.btn-light {
    background: #fff;
    color: var(--dark);
}

.btn-green {
    background: var(--green);
    color: #fff;
}

.btn-blue {
    background: var(--blue);
    color: #fff;
}

.btn-small {
    height: 34px;
    padding: 0 12px;
    background: #fff;
    color: var(--dark);
    border: 1px solid var(--border);
    font-size: 13px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    padding: 22px 28px;
    background: var(--dark);
    color: #fff;
}

.eyebrow {
    margin-bottom: 6px;
    color: #cbd5e1;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.subtitle {
    margin-top: 8px;
    color: #dbeafe;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.account-dropdown {
    position: relative;
}

.account-dropdown summary {
    list-style: none;
}

.account-dropdown summary::-webkit-details-marker {
    display: none;
}

.account-summary {
    height: 42px;
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    cursor: pointer;
    font-weight: 700;
}

.account-avatar {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: #fff;
    color: var(--dark);
    font-weight: 800;
}

.account-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    width: 240px;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
    z-index: 50;
}

.account-info {
    display: grid;
    gap: 3px;
    padding: 10px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 6px;
}

.account-info strong {
    color: var(--text);
}

.account-info small {
    color: var(--muted);
    word-break: break-word;
}

.account-menu a {
    display: block;
    padding: 10px;
    border-radius: 10px;
    color: var(--text);
    text-decoration: none;
}

.account-menu a:hover {
    background: #f8fafc;
}

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

.app-layout {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 24px;
}

.sidebar {
    padding: 18px;
    align-self: start;
    position: sticky;
    top: 20px;
}

.sidebar-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.sidebar-header p {
    margin-top: 5px;
    font-size: 13px;
}

.tracker-list {
    display: grid;
    gap: 10px;
}

.tracker-item {
    width: 100%;
    text-align: left;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #f8fafc;
    color: var(--text);
    font-weight: 600;
}

.tracker-item.active {
    background: var(--dark);
    color: #fff;
    border-color: var(--dark);
}

.calendar-panel {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 14px;
}

.calendar-header p {
    margin-top: 4px;
    font-size: 13px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 6px;
}

.calendar-day-name {
    font-size: 11px;
    font-weight: 800;
    color: var(--muted);
    text-align: center;
    padding-bottom: 4px;
}

.calendar-day {
    position: relative;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #f8fafc;
    padding: 6px;
    cursor: pointer;
    overflow: hidden;
    font-size: 12px;
    font-weight: 700;
}

.calendar-day:hover,
.calendar-day.active {
    background: var(--soft-blue);
    border-color: var(--blue);
}

.calendar-day.empty {
    background: transparent;
    border: 0;
    cursor: default;
}

.calendar-date.today {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    border-radius: 999px;
    background: var(--dark);
    color: #fff;
}

.calendar-entry-count {
    position: absolute;
    right: 5px;
    bottom: 5px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 999px;
    background: var(--green);
    color: #fff;
    font-size: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.calendar-detail {
    margin-top: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #f8fafc;
}

.calendar-detail p,
.calendar-detail small {
    font-size: 13px;
}

.calendar-detail-title {
    font-weight: 800;
    margin-bottom: 8px;
}

.calendar-detail-row {
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    margin-top: 8px;
}

.workspace {
    min-width: 0;
}

.empty-state {
    padding: 48px 24px;
    text-align: center;
}

.empty-state p {
    margin-top: 8px;
}

.sheet-toolbar {
    padding: 18px;
    margin-bottom: 18px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-end;
}

.title-editor {
    flex: 1;
}

.title-editor label,
.date-controls label {
    display: grid;
    gap: 6px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.title-row {
    display: flex;
    gap: 10px;
    margin-top: 6px;
}

.title-editor p {
    margin-top: 8px;
}

.date-controls {
    display: flex;
    gap: 12px;
}

.date-controls label {
    min-width: 145px;
}

.sheet-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.sheet-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.sheet-card-header {
    min-height: 76px;
    padding: 16px 18px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.sheet-card-header p {
    margin-top: 5px;
    font-size: 14px;
}

.income-card .sheet-card-header {
    background: var(--soft-green);
}

.income-card h3 {
    color: var(--green);
}

.expense-card .sheet-card-header {
    background: var(--soft-blue);
}

.expense-card h3 {
    color: var(--blue);
}

.table-wrap {
    overflow-x: auto;
    padding: 12px 16px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 8px;
    border-bottom: 1px solid #eef2f6;
}

td input {
    height: 40px;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.row-plus,
.row-minus {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 9px;
    font-size: 19px;
    line-height: 1;
}

.row-plus {
    background: var(--green);
    color: #fff;
}

.row-minus {
    background: var(--red);
    color: #fff;
}

.sheet-total,
.expense-total-row {
    min-height: 64px;
    padding: 16px 18px;
    border-top: 1px solid var(--border);
}

.sheet-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sheet-total span,
.expense-total-row span {
    font-weight: 800;
}

.sheet-total strong,
.expense-total-row strong {
    font-size: 22px;
}

.total-green {
    background: var(--soft-green);
    color: var(--green);
}

.expense-total-row {
    background: var(--soft-blue);
    color: var(--blue);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.expense-total-row div {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
}

.summary-row {
    margin-top: 18px;
    padding: 18px;
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 16px;
    align-items: center;
}

.summary-card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}

.summary-card span {
    display: block;
    font-weight: 800;
    margin-bottom: 8px;
}

.summary-card strong {
    font-size: 26px;
}

.summary-card.green {
    color: var(--green);
    background: var(--soft-green);
}

.summary-card.blue {
    color: var(--blue);
    background: var(--soft-blue);
}

.summary-card.purple {
    color: var(--purple);
    background: var(--soft-purple);
}

.summary-symbol {
    font-size: 24px;
    font-weight: 900;
    color: var(--muted);
}

.save-bar {
    margin-top: 18px;
    padding: 18px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
}

.save-bar p {
    margin-top: 5px;
}

.save-btn {
    min-width: 170px;
}

.toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    padding: 12px 16px;
    border-radius: 12px;
    background: var(--dark);
    color: #fff;
    box-shadow: var(--shadow);
    z-index: 100;
}

footer {
    text-align: center;
    color: var(--muted);
    padding: 22px;
}

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

@media (max-width: 1200px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }
}

@media (max-width: 980px) {
    .topbar,
    .sheet-toolbar,
    .save-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .top-actions,
    .date-controls,
    .title-row {
        flex-wrap: wrap;
    }

    .sheet-grid,
    .summary-row {
        grid-template-columns: 1fr;
    }

    .summary-symbol {
        display: none;
    }
}

@media print {
    .top-actions,
    .sidebar,
    .save-bar,
    footer {
        display: none !important;
    }

    .app-layout {
        display: block;
    }

    body {
        background: #fff;
    }

    .card,
    .sheet-card {
        box-shadow: none;
    }
}