:root {
    --color-bg: #f5f6fa;
    --color-surface: #ffffff;
    --color-primary: #2f6f4f;
    --color-primary-dark: #235241;
    --color-primary-light: #e8f3ed;
    --color-text: #1f2933;
    --color-muted: #6b7280;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-error-bg: #fee2e2;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

.site-header {
    background: var(--color-primary);
    color: white;
    padding: 1.5rem 2rem;
}

.site-header h1 {
    margin: 0;
    font-size: 1.75rem;
}

.tagline {
    margin: 0.25rem 0 0;
    opacity: 0.85;
    font-size: 0.95rem;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary);
}

.panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.panel h2 {
    margin-top: 0;
    font-size: 1.15rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Form Styles */
.expense-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select {
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-actions {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    justify-content: flex-start;
}

.form-message {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-top: -0.75rem;
}

.form-message.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.form-message.error {
    background: var(--color-error-bg);
    color: #7f1d1d;
    border: 1px solid #fecaca;
}

/* Button Styles */
.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

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

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

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.4rem 0.6rem;
    color: var(--color-muted);
    transition: color 0.2s;
    border-radius: 4px;
}

.btn-icon:hover {
    color: var(--color-text);
    background: var(--color-border);
}

.btn-edit {
    color: #3b82f6;
}

.btn-edit:hover {
    background: #eff6ff;
}

.btn-delete {
    color: var(--color-error);
}

.btn-delete:hover {
    background: var(--color-error-bg);
}

/* Table Styles */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    text-align: left;
    padding: 0.6rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.data-table th {
    color: var(--color-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
}

.data-table tbody tr:hover {
    background: var(--color-primary-light);
}

.data-table td.text-cell {
    max-width: 220px;
    white-space: normal;
    word-break: break-word;
}

.table-wrapper {
    overflow-x: auto;
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
}

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

.empty-state {
    color: var(--color-muted);
    font-style: italic;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--color-surface);
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    padding: 0;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-muted);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.modal-close:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.modal-content form {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.site-footer {
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    padding: 1.5rem;
}

.login-panel {
    max-width: 560px;
    margin: 1rem auto;
    text-align: center;
}

.login-copy {
    color: var(--color-muted);
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.telegram-login-wrap {
    display: flex;
    justify-content: center;
    min-height: 48px;
    margin-bottom: 1rem;
}

.session-note {
    margin: 0;
    color: var(--color-muted);
}

.login-steps {
    text-align: left;
    margin: 0 auto 1rem;
    max-width: 420px;
    color: var(--color-text);
}

.login-form {
    max-width: 340px;
    margin: 0 auto;
}

.table-wrapper.scrollable-table {
    max-height: 420px;
    overflow-y: auto;
}

.scrollable-table thead th {
    position: sticky;
    top: 0;
    background: var(--color-surface);
}

/* Bar chart */
.chart-range-form {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.chart-range-form .form-group {
    gap: 0.35rem;
}

.chart-range-form input[type="number"] {
    width: 100px;
}

.chart-wrapper {
    width: 100%;
    overflow-x: auto;
}

/* Tab nav */
.tab-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.tab-button {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-muted);
    cursor: pointer;
}

.tab-button:hover {
    color: var(--color-text);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Cash-flow tab */
.cashflow-settings-form {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.headline-list {
    margin: 0;
    padding-left: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.view-selector {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--color-text);
}

.view-selector label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
}

.alert-toggle-row {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    cursor: pointer;
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: var(--color-error-bg);
    color: #7f1d1d;
}

.weekly-chart-panel {
    border-top: 1px solid var(--color-border);
    padding-top: 1.25rem;
    margin-top: 1.25rem;
}

.weekly-chart-panel:first-child {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

.week-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.week-block h4 {
    margin: 0 0 0.35rem;
    font-size: 0.9rem;
    color: var(--color-muted);
    font-weight: 500;
}

.week-items {
    margin: 0;
    padding-left: 1.25rem;
    font-size: 0.9rem;
}

.amount-positive {
    color: var(--color-success);
}

.amount-negative {
    color: var(--color-error);
}

.month-drilldown {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 1rem;
}

.category-row {
    cursor: pointer;
}

.category-row:hover {
    background: var(--color-primary-light);
}

.nested-table {
    margin: 0.5rem 0;
}