:root {
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #27ae60;
    --secondary-dark: #229954;
    --danger: #e74c3c;
    --danger-dark: #c0392b;
    --text: #333;
    --text-muted: #555;
    --surface: #ffffff;
    --surface-soft: #f8f9fa;
    --border: #ddd;
    --border-soft: #e0e0e0;
    --empty-bg: #f5f5f5;
    --weekend-bg: #fff9e6;
    --back-btn: #6c757d;
    --back-btn-hover: #5a6268;
    --accent: #ffd700;
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.1);
    --radius-lg: 20px;
    --radius-md: 10px;
    --radius-sm: 8px;
    --transition: all 0.25s ease;
    --container-index: 900px;
    --container-planner: 900px;
    --container-calendar: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    color: var(--text);
}

.page {
    padding: 20px;
}

.container {
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.container-index {
    max-width: var(--container-index);
    min-height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
}

.container-planner {
    max-width: var(--container-planner);
}

.container-calendar {
    max-width: var(--container-calendar);
}

.page-header,
.page-footer {
    background: var(--bg-gradient);
    color: #fff;
    text-align: center;
}

.page-header {
    padding: 30px;
}

.page-header h1 {
    font-size: 2em;
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.9;
}

.page-footer {
    padding: 20px;
    margin-top: auto;
}

.page-footer p {
    font-size: 0.9em;
    opacity: 0.9;
}

.main-content {
    padding: 30px;
}

.card,
.anchor-event,
.settings-section,
.service-card,
.event-item {
    background: var(--surface-soft);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
}

.section {
    margin-bottom: 30px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: var(--text);
    font-size: 1.2em;
    font-weight: 600;
}

.section-title .arrow {
    font-size: 1.5em;
}

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

.after {
    color: var(--secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.service-card {
    padding: 20px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 1.75rem;
    color: #fff;
    font-weight: 600;
}

.service-card h2 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.3em;
}

.service-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 15px;
    flex: 1;
}

a,
button {
    font-family: inherit;
}

.btn,
.service-link {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

.btn-primary,
.btn-add,
.service-link {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover,
.btn-add:hover,
.service-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.btn-remove {
    background: var(--danger);
    color: #fff;
    padding: 8px 15px;
}

.btn-remove:hover {
    background: var(--danger-dark);
}

.btn-back {
    background: var(--back-btn);
    color: #fff;
    margin-bottom: 20px;
}

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

input[type='time'],
input[type='number'],
input[type='text'],
input[type='date'] {
    padding: 10px 15px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1em;
    transition: border-color 0.2s ease;
}

input[type='time']:focus,
input[type='number']:focus,
input[type='text']:focus,
input[type='date']:focus {
    outline: none;
    border-color: var(--primary);
}

.time-input-group,
.input-group,
.event-inputs {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.time-input-group label,
.input-group label {
    font-weight: 600;
    color: var(--text);
}

.input-group label {
    min-width: 80px;
}

.anchor-event,
.settings-section {
    padding: 20px;
    margin-bottom: 30px;
}

.anchor-event h2,
.settings-section h2 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.3em;
}

.anchor-duration-label {
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--text);
}

.duration-inputs {
    display: flex;
    gap: 10px;
    align-items: center;
}

.duration-inputs input {
    width: 80px;
}

.quick-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.quick-btn {
    padding: 8px 16px;
    border: 2px solid var(--primary);
    background: #fff;
    color: var(--primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    transition: var(--transition);
}

.quick-btn:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

.events-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.event-item {
    padding: 15px;
    border-left: 4px solid var(--primary);
}

.event-item.before {
    border-left-color: var(--danger);
}

.event-item.after {
    border-left-color: var(--secondary);
}

.event-inputs input[type='text'] {
    flex: 1;
    min-width: 200px;
}

.event-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.results {
    background: var(--bg-gradient);
    color: #fff;
    padding: 25px;
    border-radius: var(--radius-md);
    margin-top: 30px;
}

.results h2 {
    margin-bottom: 20px;
    font-size: 1.5em;
}

.result-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    font-size: 1.1em;
}

.result-item strong {
    font-size: 1.2em;
    color: var(--accent);
}

.timeline {
    margin-top: 30px;
    padding: 20px;
    background: var(--surface-soft);
    border-radius: var(--radius-md);
}

.timeline-title {
    margin-bottom: 15px;
    color: var(--primary);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin: 5px 0;
    padding: 10px 10px 10px 15px;
    border-left: 3px solid var(--border);
}

.timeline-item.anchor {
    border-left-color: var(--primary);
    background: #e8eaf6;
    font-weight: 600;
}

.timeline-time {
    min-width: 100px;
    font-weight: 600;
    color: var(--primary);
}

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

.info-box {
    background: rgba(102, 126, 234, 0.1);
    padding: 15px;
    border-radius: var(--radius-sm);
    margin-top: 15px;
}

.buttons-row {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.preview-container {
    margin-top: 30px;
    padding: 20px;
    background: var(--surface-soft);
    border-radius: var(--radius-md);
}

.preview-container h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.preview-empty {
    text-align: center;
    color: #999;
    padding: 40px;
}

#calendarPreview {
    background: #fff;
    padding: 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    min-height: 200px;
}

.calendar-header {
    text-align: center;
    margin-bottom: 15px;
}

.calendar-header h2 {
    color: var(--primary);
    margin-bottom: 3px;
    font-size: 1.4em;
}

.calendar-header p {
    color: var(--text-muted);
    font-size: 0.9em;
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.calendar-table th {
    background: var(--primary);
    color: #fff;
    padding: 8px 4px;
    text-align: center;
    font-weight: 600;
    font-size: 0.85em;
    border: 1px solid var(--primary-dark);
}

.calendar-table td {
    border: 1px solid var(--border);
    padding: 6px 4px;
    vertical-align: top;
    height: 80px;
    width: 14.28%;
}

.calendar-table td.empty {
    background: var(--empty-bg);
    border: 1px solid var(--border-soft);
}

.weekend {
    background: var(--weekend-bg);
}

.date-number {
    font-weight: 700;
    color: var(--primary);
    font-size: 1em;
    margin-bottom: 2px;
}

.date-info {
    font-size: 0.7em;
    color: #999;
    margin-bottom: 4px;
}

.notes-area {
    color: #ccc;
    font-size: 0.65em;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .page {
        padding: 10px;
    }

    .page-header {
        padding: 20px;
    }

    .page-header h1 {
        font-size: 1.5em;
    }

    .main-content {
        padding: 20px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-icon {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }

    .service-card h2 {
        font-size: 1.2em;
    }

    .input-group,
    .time-input-group,
    .event-inputs {
        flex-direction: column;
        align-items: flex-start;
    }

    .buttons-row,
    .event-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .btn {
        width: 100%;
    }

    .calendar-table {
        font-size: 0.85em;
    }

    .calendar-table td {
        height: 70px;
        padding: 4px;
    }
}

@media print {
    @page {
        margin: 0.5cm;
    }

    body.calendar-page {
        background: #fff;
        padding: 0;
        margin: 0;
    }

    .calendar-page .container {
        box-shadow: none;
        border-radius: 0;
        max-width: 100%;
    }

    .calendar-page .page-header,
    .calendar-page .settings-section,
    .calendar-page .preview-container h3,
    .calendar-page .buttons-row,
    .calendar-page .btn-back {
        display: none;
    }

    .calendar-page #calendarPreview {
        border: none;
        padding: 0;
        margin: 0;
    }

    .calendar-page .preview-container {
        padding: 0;
        background: #fff;
        margin: 0;
    }

    .calendar-page .calendar-header {
        margin-bottom: 8px;
    }

    .calendar-page .calendar-header h2 {
        font-size: 1.2em;
        margin-bottom: 2px;
    }

    .calendar-page .calendar-header p {
        font-size: 0.8em;
    }

    .calendar-page .calendar-table {
        margin-top: 5px;
    }

    .calendar-page .calendar-table th {
        padding: 6px 3px;
        font-size: 0.8em;
    }

    .calendar-page .calendar-table td {
        height: 85px;
        padding: 4px 3px;
        page-break-inside: avoid;
    }

    .calendar-page .date-number {
        font-size: 0.95em;
        margin-bottom: 1px;
    }

    .calendar-page .date-info {
        font-size: 0.65em;
        margin-bottom: 3px;
    }

    .calendar-page .notes-area {
        font-size: 0.6em;
        line-height: 1.5;
    }
}

/* Auth and admin UI */
.auth-card,
.admin-card,
.info-card {
    padding: 20px;
    margin-bottom: 20px;
}

.auth-card h2,
.admin-card h2 {
    color: var(--primary);
    margin-bottom: 12px;
}

.form-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    align-items: end;
}

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

.top-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.alerts {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.alert {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.alert-success {
    color: #0b4f2a;
    background: #dcf5e7;
    border-color: #b6e9cd;
}

.alert-error {
    color: #7f1d1d;
    background: #ffe6e6;
    border-color: #ffcaca;
}

.alert-temp_password {
    color: #5a4300;
    background: #fff4cc;
    border-color: #ffe48a;
    font-weight: 600;
}

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

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

.admin-table th,
.admin-table td {
    border: 1px solid var(--border);
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

.admin-table th {
    background: var(--surface-soft);
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.85em;
    background: #eef1f7;
    color: #3b4a61;
}

.badge-admin {
    background: #e7ecff;
    color: #2d3ea5;
}

.badge-active {
    background: #dcf5e7;
    color: #0b4f2a;
}

.badge-inactive {
    background: #ffe6e6;
    color: #7f1d1d;
}

.permissions-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.permissions-list code,
.permission-box code {
    font-size: 0.9em;
    color: #3a3a3a;
}

.permissions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 10px;
}

.permission-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.checkbox-line {
    display: flex;
    align-items: center;
    gap: 8px;
}

.muted {
    color: #6b7280;
}

.auth-help {
    margin-top: 12px;
}

.auth-help a {
    color: var(--primary);
    text-decoration: none;
}

.auth-help a:hover {
    text-decoration: underline;
}

/* Public tools: habits, expenses, matrix */
.container-tool {
    max-width: 1200px;
}

select {
    padding: 10px 15px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1em;
    background: #fff;
    transition: border-color 0.2s ease;
}

select:focus {
    outline: none;
    border-color: var(--primary);
}

.section-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 15px;
}

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

.section-headline h3 {
    color: var(--primary);
    font-size: 1.1em;
}

.field-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-block label {
    font-weight: 600;
    color: var(--text);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 15px;
}

.note-text {
    margin-top: 10px;
    color: #6b7280;
    font-size: 0.9em;
}

.btn-small {
    padding: 7px 12px;
    font-size: 0.9em;
}

.list-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.empty-state {
    background: #fff;
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    color: #777;
}

.message-box {
    margin-top: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    padding: 10px 12px;
    font-size: 0.95em;
}

.message-box.success {
    color: #0b4f2a;
    background: #dcf5e7;
    border-color: #b6e9cd;
}

.message-box.error {
    color: #7f1d1d;
    background: #ffe6e6;
    border-color: #ffcaca;
}

.habit-editor-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.habit-editor-row input {
    flex: 1;
}

.tracker-print-header {
    margin-bottom: 12px;
}

.tracker-print-header h2 {
    color: var(--primary);
    margin-bottom: 4px;
}

.tracker-print-header p {
    color: #666;
}

.habit-table-wrap {
    overflow-x: auto;
}

.habit-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 860px;
}

.habit-table th,
.habit-table td {
    border: 1px solid var(--border);
    text-align: center;
    padding: 4px;
}

.habit-table thead th {
    background: #eef1f9;
}

.habit-name-header {
    min-width: 180px;
}

.habit-name-cell {
    text-align: left;
    padding: 6px 8px;
    background: #fafbff;
    white-space: nowrap;
}

.day-head {
    font-weight: 700;
    line-height: 1.1;
}

.day-sub {
    color: #666;
    font-size: 0.75em;
    line-height: 1.1;
}

.habit-check {
    width: 24px;
    height: 24px;
    border: 1px solid #b8bfd5;
    border-radius: 4px;
    background: #fff;
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.habit-check:hover {
    border-color: var(--primary);
}

.habit-check.is-checked {
    background: var(--secondary);
    border-color: var(--secondary-dark);
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
}

.stat-label {
    color: #6b7280;
    font-size: 0.9em;
}

.stat-value {
    font-size: 1.2em;
    font-weight: 700;
    margin-top: 4px;
    color: #1f2937;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

.data-table th,
.data-table td {
    border: 1px solid var(--border);
    padding: 9px 10px;
    text-align: left;
    vertical-align: middle;
}

.data-table th {
    background: #f3f5fb;
}

.data-table input,
.data-table select {
    width: 100%;
}

.checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.manual-shares {
    margin-top: 12px;
}

.manual-share-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.manual-share-row label {
    flex: 1;
}

.manual-share-row input {
    width: 160px;
}

.mode-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 999px;
    background: #ebefff;
    color: #2c3c97;
    font-size: 0.85em;
    font-weight: 600;
}

.subheading {
    margin: 18px 0 10px;
    color: var(--primary);
}

.balance-positive {
    color: #0b4f2a;
    font-weight: 600;
}

.balance-negative {
    color: #7f1d1d;
    font-weight: 600;
}

.balance-zero {
    color: #374151;
}

.transfer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 10px 0 0;
    padding: 0;
}

.transfer-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}

.matrix-wrap {
    overflow-x: auto;
}

.matrix-table {
    min-width: 700px;
}

.matrix-table td input[type='number'] {
    text-align: center;
}

.matrix-row-title {
    white-space: nowrap;
    background: #fafbff;
}

.rank-table .winner-row td {
    background: #f1faee;
    font-weight: 700;
}

.sensitivity-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}

@media (max-width: 768px) {
    .section-headline {
        flex-direction: column;
        align-items: stretch;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .habit-editor-row {
        flex-direction: column;
        align-items: stretch;
    }

    .habit-check {
        width: 22px;
        height: 22px;
        font-size: 0.85em;
    }

    .habit-table {
        min-width: 680px;
    }

    .manual-share-row {
        flex-direction: column;
        align-items: stretch;
    }

    .manual-share-row input {
        width: 100%;
    }

    .data-table th,
    .data-table td {
        padding: 8px;
        font-size: 0.9em;
    }
}

@media print {
    body.habits-page {
        background: #fff;
        padding: 0;
        margin: 0;
    }

    .habits-page .container {
        box-shadow: none;
        border-radius: 0;
        max-width: 100%;
    }

    .habits-page .page-header,
    .habits-page .settings-section,
    .habits-page .btn-back,
    .habits-page #statsSection {
        display: none;
    }

    .habits-page .main-content {
        padding: 0;
    }

    .habits-page #trackerSection {
        margin: 0;
        padding: 0;
        background: #fff;
    }

    .habits-page #trackerSection h3 {
        display: none;
    }

    .habits-page #trackerPreview {
        border: none;
        padding: 0;
    }

    .habits-page .habit-table-wrap {
        overflow: visible;
    }

    .habits-page .habit-table {
        min-width: 0;
        width: 100%;
        font-size: 8px;
    }

    .habits-page .habit-table th,
    .habits-page .habit-table td {
        padding: 2px;
    }

    .habits-page .habit-name-header {
        min-width: 100px;
    }

    .habits-page .habit-check {
        width: 14px;
        height: 14px;
        border: 1px solid #666;
        border-radius: 2px;
        font-size: 9px;
        line-height: 1;
        color: #111;
    }

    .habits-page .habit-check.is-checked {
        background: #fff;
        border-color: #111;
    }

    .habits-page .tracker-print-header h2 {
        font-size: 1.1em;
        margin-bottom: 2px;
    }

    .habits-page .tracker-print-header p {
        font-size: 0.82em;
    }
}