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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #16a34a;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
    --radius: 8px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f5fa;
    min-height: 100vh;
    color: var(--text-primary);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 20px 0;
}

#app {
    display: none;
}

/* ── Header ── */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ── Middle (two‑column) ── */

.middle {
    display: flex;
    gap: 16px;
    position: relative;
    min-height: 520px;
}

/* ── Left panel ── */

.left-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Stats row */

.stats-row {
    display: flex;
    gap: 32px;
}

.stats-row .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stats-row .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

.stats-row .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Next task section */

.next-task-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.next-task-header {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.next-task-body {
    min-height: 80px;
}

.next-task-body .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    color: var(--text-secondary);
}

.next-task-body .empty-icon {
    font-size: 36px;
    margin-bottom: 8px;
}

.next-task-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 20px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.next-task-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.next-task-meta {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

.next-task-actions {
    margin-left: auto;
    display: flex;
    gap: 6px;
}

.next-task-actions .task-action-btn {
    width: 32px;
    height: 28px;
    font-size: 12px;
}

/* Pressure section */

.pressure-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.pressure-header {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.pressure-bar {
    height: 10px;
    background: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 8px;
}

.pressure-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 5px;
    transition: width 0.3s ease;
}

.pressure-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pressure-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.pressure-text {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ── Right panel (task list) ── */

.right-panel {
    width: 22%;
    min-width: 180px;
    max-width: 260px;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
    transition: all 0.35s ease;
    position: relative;
    z-index: 5;
    overflow: hidden;
}

.right-panel.expanded {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    max-width: none;
    height: 100%;
    z-index: 10;
    box-shadow: -6px 0 24px rgba(0, 0, 0, 0.12);
    overflow-y: auto;
}

.right-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.right-panel-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ── Task list items ── */

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

.task-list .empty-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

.task-list .empty-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.task-card {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    white-space: nowrap;
}

.task-card.high-priority {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.task-rank {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: 4px;
    font-weight: 600;
    font-size: 11px;
    color: white;
    flex-shrink: 0;
}

.task-card .task-name {
    font-size: 13px;
    font-weight: 600;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-card .task-ddl {
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
    margin-left: auto;
}

/* expanded-only content (hidden when collapsed) */

.task-expanded-detail,
.task-expanded-actions {
    display: none;
}

.right-panel.expanded .task-expanded-detail {
    display: inline;
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.right-panel.expanded .task-expanded-actions {
    display: flex;
    gap: 4px;
    margin-left: auto;
    flex-shrink: 0;
}

.right-panel.expanded .task-expanded-actions .task-action-btn {
    width: 28px;
    height: 24px;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.right-panel.expanded .task-expanded-actions .task-action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.right-panel.expanded .task-expanded-actions .task-action-btn.work:hover {
    background: #e8f0fe;
    color: var(--primary-color);
}

.right-panel.expanded .task-expanded-actions .task-action-btn.finish:hover {
    background: #f0fdf4;
    color: var(--secondary-color);
}

.right-panel.expanded .task-expanded-actions .task-action-btn.reset:hover {
    background: #fffbeb;
    color: var(--warning-color);
}

/* ── Buttons (generic) ── */

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

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

.btn-success:hover {
    background: #15803d;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

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

.btn-warning:hover {
    background: #b45309;
}

.btn-icon {
    font-size: 18px;
}

/* ── Footer ── */

.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 13px;
    border-top: 1px solid var(--border-color);
    margin-top: 24px;
}

/* ── Settings button ── */

.header-buttons {
    display: flex;
    gap: 6px;
    order: -1;
}

.header .logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-left: auto;
}

.header-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 22px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s;
}

.header-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.settings-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 22px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s;
}

.settings-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.theme-shop-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s;
}

.theme-shop-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* ── Auth ── */

.auth-overlay {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    padding: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.auth-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.auth-form .form-group {
    margin-bottom: 16px;
}

.auth-btn {
    width: 100%;
    margin-top: 8px;
}

.auth-switch {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 16px;
}

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

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

.auth-error {
    color: var(--danger-color);
    font-size: 13px;
    text-align: center;
    min-height: 20px;
    margin-bottom: 4px;
}

.header-email {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 8px;
}

.logout-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.logout-btn:hover {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

/* ── Theme shop panel ── */

.theme-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 20;
}

.theme-overlay.active {
    display: block;
}

.theme-shop-panel {
    position: fixed;
    top: 0;
    left: -280px;
    width: 260px;
    height: 100%;
    background: var(--bg-card);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.12);
    z-index: 25;
    transition: left 0.3s ease;
    display: flex;
    flex-direction: column;
}

.theme-shop-panel.open {
    left: 0;
}

.theme-shop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.theme-shop-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.theme-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: #f8fafc;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s;
}

.theme-btn:hover {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.theme-btn.theme-green:hover {
    border-color: #16a34a;
    background: #f0fdf4;
}

.theme-btn.theme-red:hover {
    border-color: #dc2626;
    background: #fef2f2;
}

/* ── Modal ── */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modal-content.small-modal {
    max-width: 380px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 24px;
    transition: background 0.2s;
}

.close-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

/* ── Form ── */

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder {
    color: var(--text-secondary);
}

.form-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* ── Checkbox ── */

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    padding: 8px 0;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
}

/* ── Slice picker ── */

.slice-time-info {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 8px;
}

.time-slices {
    display: flex;
    align-items: center;
    gap: 12px;
}

.slice-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.slice-value {
    font-size: 24px;
    font-weight: 700;
    min-width: 40px;
    text-align: center;
}

/* ── Responsive ── */

@media (max-width: 900px) {
    .middle {
        flex-direction: column;
    }

    .right-panel {
        width: 100%;
        max-width: none;
        min-width: 0;
    }

    .right-panel.expanded {
        position: static;
        width: 100%;
        box-shadow: var(--shadow);
    }
}