/* Sensei - Dark Theme */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #222537;
    --bg-hover: #2a2d3f;
    --text-primary: #e4e6f0;
    --text-secondary: #8b8fa3;
    --text-muted: #5c5f73;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #2e3148;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
    --radius: 12px;
    --radius-sm: 8px;
}

[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #f0f0f2;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app {
    display: flex;
    min-height: 100vh;
}

/* Top Navigation */
.topnav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.topnav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 22px;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.3px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 4px;
    flex: 1;
}

.nav-links a {
    display: block;
    padding: 8px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 400;
    white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-links a.active {
    background: rgba(99,102,241,0.15);
    color: var(--accent);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    flex-shrink: 0;
}

.version-tag {
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-hover);
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 500;
    letter-spacing: 0.5px;
    line-height: 1;
    display: flex;
    align-items: center;
    height: 28px;
    box-sizing: border-box;
}

.theme-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

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

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-shrink: 0;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    margin: 4px 0;
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    z-index: 99;
    padding: 12px 24px;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav-links a {
    display: block;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: all 0.2s;
}

.mobile-nav-links a:hover, .mobile-nav-links a.active {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* Main Content */
.content {
    margin-top: 60px;
    padding: 32px 24px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    box-sizing: border-box;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.date-display {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.stat-value {
    font-size: 36px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: -1px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 4px;
}

/* Sections */
.section {
    margin-bottom: 30px;
}

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

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Task List */
.task-list, .plan-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.task-item, .plan-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s;
}

.task-item:hover, .plan-item:hover {
    border-color: var(--accent);
}

.task-item.completed {
    opacity: 0.6;
}

.task-priority {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.task-priority.urgent { background: var(--danger); }
.task-priority.high { background: var(--warning); }
.task-priority.normal { background: var(--accent); }
.task-priority.low { background: var(--text-muted); }

.task-info {
    flex: 1;
}

.task-title {
    font-weight: 500;
    margin-bottom: 4px;
    letter-spacing: -0.2px;
}

.task-meta {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
}

.task-category {
    background: var(--bg-hover);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
}

.task-actions {
    display: flex;
    gap: 6px;
}

.task-actions select {
    background: var(--bg-hover);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.status-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
}

.status-pending { background: rgba(99,102,241,0.2); color: var(--accent); }
.status-in_progress { background: rgba(245,158,11,0.2); color: var(--warning); }
.status-done { background: rgba(16,185,129,0.2); color: var(--success); }
.status-reviewed { background: rgba(139,143,163,0.2); color: var(--text-secondary); }

/* Plan Item */
.plan-status {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
}

.plan-stated { background: rgba(99,102,241,0.2); color: var(--accent); }
.plan-in_progress { background: rgba(245,158,11,0.2); color: var(--warning); }
.plan-completed { background: rgba(16,185,129,0.2); color: var(--success); }
.plan-failed { background: rgba(239,68,68,0.2); color: var(--danger); }

/* Calendar */
.calendar-nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    background: var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.calendar-day {
    background: var(--bg-secondary);
    padding: 8px;
    min-height: 80px;
    font-size: 13px;
}

.calendar-day-header {
    background: var(--bg-card);
    padding: 10px;
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
}

.calendar-day .day-num {
    font-weight: 600;
    margin-bottom: 4px;
}

.calendar-day.today {
    background: var(--bg-card);
    border: 2px solid var(--accent);
}

.calendar-day.other-month {
    opacity: 0.4;
}

.calendar-task {
    background: var(--accent);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Filters */
.filters {
    display: flex;
    gap: 10px;
    align-items: center;
}

.filters select {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
}

.date-picker {
    display: flex;
    gap: 10px;
    align-items: center;
}

.date-picker input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.category-color {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 0 auto 12px;
}

.category-name {
    font-weight: 600;
    margin-bottom: 4px;
}

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

.category-actions {
    margin-top: 12px;
    display: flex;
    gap: 6px;
    justify-content: center;
}

/* Progress */
.progress-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.progress-week {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

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

.progress-week-header h3 {
    font-size: 16px;
}

.progress-bar {
    background: var(--bg-hover);
    border-radius: 8px;
    height: 12px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    border-radius: 8px;
    transition: width 0.5s ease;
}

.progress-stats {
    display: flex;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
}

.progress-comparison {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 16px;
}

.comparison-card {
    text-align: center;
}

.comparison-card h4 {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.comparison-value {
    font-size: 32px;
    font-weight: 700;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

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

/* Forms */
.form-group {
    margin-bottom: 16px;
    padding: 0 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

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

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

/* Responsive */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .nav-links a {
        padding: 8px 10px;
        font-size: 13px;
    }
    .topnav-inner {
        gap: 16px;
    }
}

/* Mobile (below 768px) */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .content {
        padding: 20px 16px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .stat-card {
        padding: 16px;
    }
    .stat-value {
        font-size: 28px;
    }
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .page-header h1 {
        font-size: 22px;
    }
    .filters {
        flex-wrap: wrap;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .calendar-grid {
        font-size: 11px;
    }
    .calendar-day {
        min-height: 60px;
        padding: 4px;
    }
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .modal-content {
        margin: 16px;
        max-height: calc(100vh - 32px);
    }
    .task-item {
        flex-wrap: wrap;
    }
    .task-actions {
        width: 100%;
        justify-content: flex-end;
        margin-top: 8px;
    }
}

/* Small Mobile (below 480px) */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .stat-card {
        padding: 12px;
    }
    .stat-value {
        font-size: 24px;
    }
    .stat-label {
        font-size: 12px;
    }
    .topnav-inner {
        padding: 0 16px;
    }
    .logo-text {
        font-size: 16px;
    }
    .categories-grid {
        grid-template-columns: 1fr;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .date-picker {
        flex-direction: column;
        width: 100%;
    }
    .date-picker input {
        width: 100%;
    }
    .timeline-nav {
        flex-direction: column;
        width: 100%;
    }
    .timeline-nav input {
        width: 100%;
    }
}

/* ==================== TIMELINE ==================== */

.timeline-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.timeline-nav input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
}

.timeline-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.timeline-stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.timeline-stat-value {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.timeline-stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.timeline-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    overflow-x: auto;
}

.timeline-hours {
    display: flex;
    gap: 2px;
    margin-bottom: 8px;
}

.timeline-hour-label {
    width: 40px;
    text-align: center;
    font-size: 10px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.timeline-bar {
    display: flex;
    gap: 2px;
    height: 40px;
    margin-bottom: 4px;
}

.timeline-block {
    flex: 1;
    border-radius: 3px;
    position: relative;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 16px;
}

.timeline-block:hover {
    transform: scaleY(1.2);
    z-index: 1;
}

.timeline-block.productive {
    background: var(--success);
}

.timeline-block.idle {
    background: var(--bg-hover);
}

.timeline-block.sleeping {
    background: #1e1b4b;
}

.timeline-block.checkin {
    background: var(--accent);
}

.timeline-block.planned {
    background: var(--warning);
}

.timeline-block.coffee {
    background: #8b5cf6;
    box-shadow: inset 0 0 0 2px #a78bfa;
}

.timeline-legend {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.timeline-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.timeline-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

/* Branches */

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

.timeline-branches {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.branch-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.branch-time {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 50px;
    padding-top: 2px;
}

.branch-content {
    flex: 1;
}

.branch-type {
    font-size: 11px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 4px;
}

.branch-type.checkin {
    background: rgba(99,102,241,0.2);
    color: var(--accent);
}

.branch-type.plan {
    background: rgba(245,158,11,0.2);
    color: var(--warning);
}

.branch-type.task {
    background: rgba(16,185,129,0.2);
    color: var(--success);
}

.branch-type.response {
    background: rgba(139,143,163,0.2);
    color: var(--text-secondary);
}

.branch-text {
    font-size: 14px;
    line-height: 1.5;
}

.branch-connector {
    width: 2px;
    background: var(--border);
    align-self: stretch;
    flex-shrink: 0;
    margin-left: 24px;
}

.timeline-empty {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.coffee-btn {
    background: #8b5cf6 !important;
    color: white !important;
    border: none !important;
    font-size: 13px !important;
    padding: 6px 14px !important;
    border-radius: 20px !important;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.coffee-btn:hover {
    background: #7c3aed !important;
    transform: scale(1.05);
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    z-index: 1000;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow);
}

.toast.active {
    transform: translateX(-50%) translateY(0);
}

.branch-type.coffee {
    background: rgba(139,92,246,0.2);
    color: #8b5cf6;
}