/**
 * Assignment Deadline Optimizer - Styles
 * Light & Dark theme support with responsive design
 */

/* CSS Variables */
.deadline-optimizer-container {
    --do-primary: var(--primary-color, #6366f1);
    --do-primary-rgb: 99, 102, 241;
    --do-secondary: var(--secondary-color, #22c55e);
    --do-secondary-rgb: 34, 197, 94;
    --do-bg: var(--card-bg-color, #ffffff);
    --do-surface: var(--background-color, #f8fafc);
    --do-text: var(--text-color, #1e293b);
    --do-text-muted: #64748b;
    --do-border: var(--border-color, rgba(99, 102, 241, 0.1));
    --do-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --do-success: #22c55e;
    --do-warning: #f59e0b;
    --do-danger: #ef4444;
    --do-info: #3b82f6;
    --do-radius: 12px;
    --do-radius-lg: 16px;
    --do-transition: 0.2s ease;
    --do-gradient: linear-gradient(135deg, var(--do-primary), #8b5cf6);
}

.dark-theme .deadline-optimizer-container {
    --do-text-muted: #94a3b8;
    --do-bg: #1e1e2e;
    --do-surface: #0f0f1a;
}

/* Container */
.deadline-optimizer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    font-family: 'Inter', sans-serif;
    color: var(--do-text);
}

/* Header */
.deadline-optimizer-container .optimizer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(var(--do-primary-rgb), 0.1), rgba(139, 92, 246, 0.05));
    border-radius: var(--do-radius-lg);
    border: 1px solid rgba(var(--do-primary-rgb), 0.15);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-icon {
    width: 60px;
    height: 60px;
    background: var(--do-gradient);
    border-radius: var(--do-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    box-shadow: 0 8px 24px rgba(var(--do-primary-rgb), 0.35);
}

.header-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
}

.header-text p {
    margin: 0.25rem 0 0;
    opacity: 0.7;
    font-size: 0.95rem;
}

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

/* Button Icon */
.deadline-optimizer-container .btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--do-border);
    background: var(--do-bg);
    color: var(--do-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--do-transition);
    position: relative;
}

.deadline-optimizer-container .btn-icon:hover {
    border-color: var(--do-primary);
    color: var(--do-primary);
    background: rgba(var(--do-primary-rgb), 0.05);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--do-danger);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
}

/* Privacy Notice */
.deadline-optimizer-container .privacy-notice {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--do-radius);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.deadline-optimizer-container .privacy-notice i {
    color: var(--do-success);
    font-size: 1.2rem;
}

/* Quick Stats Bar */
.deadline-optimizer-container .quick-stats-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    padding: 1rem;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 1.5rem;
}

.quick-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem;
    text-align: center;
}

.quick-stat i {
    font-size: 1.25rem;
    color: var(--do-primary);
    margin-bottom: 0.25rem;
}

.quick-stat.urgent i {
    color: var(--do-danger);
}

.quick-stat span {
    font-size: 1.5rem;
    font-weight: 700;
}

.quick-stat label {
    font-size: 0.75rem;
    color: var(--do-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Alert Banner */
.alert-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--do-radius);
    margin-bottom: 1.5rem;
    color: var(--do-danger);
}

.alert-banner i {
    font-size: 1.2rem;
}

.alert-banner span {
    flex: 1;
}

.alert-dismiss {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

/* Content Tabs */
.content-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.content-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    border: none;
    background: transparent;
    border-radius: var(--do-radius);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--do-text-muted);
    cursor: pointer;
    transition: var(--do-transition);
    white-space: nowrap;
}

.content-tab:hover {
    background: var(--do-surface);
    color: var(--do-text);
}

.content-tab.active {
    background: var(--do-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--do-primary-rgb), 0.3);
}

/* Content Panels */
.content-panels {
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--do-shadow);
    min-height: 500px;
}

.content-panel {
    display: none;
}

.content-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Panel Header */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.panel-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-header h3 i {
    color: var(--do-primary);
}

.panel-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    gap: 0.5rem;
}

.filter-group select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    background: var(--do-bg);
    color: var(--do-text);
    font-size: 0.875rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.dashboard-card {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    overflow: hidden;
}

.dark-theme .dashboard-card {
    background: rgba(255, 255, 255, 0.03);
}

.priority-card {
    grid-column: span 2;
}

.workload-card {
    grid-column: span 2;
}

/* Card Header & Body */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(var(--do-primary-rgb), 0.05);
    border-bottom: 1px solid var(--do-border);
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-header h3 i {
    color: var(--do-primary);
}

.card-body {
    padding: 1.25rem;
}

.date-badge {
    background: var(--do-gradient);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge {
    background: rgba(var(--do-primary-rgb), 0.1);
    color: var(--do-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--do-warning);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--do-text-muted);
}

.empty-state.small {
    padding: 1.5rem;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state.small i {
    font-size: 2rem;
}

.empty-state h4 {
    font-size: 1.1rem;
    color: var(--do-text);
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.empty-state.success i {
    color: var(--do-success);
    opacity: 1;
}

/* Buttons */
.deadline-optimizer-container .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--do-radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--do-transition);
}

.deadline-optimizer-container .btn-primary {
    background: var(--do-gradient);
    color: white;
}

.deadline-optimizer-container .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--do-primary-rgb), 0.3);
}

.deadline-optimizer-container .btn-outline {
    background: transparent;
    border: 2px solid var(--do-border);
    color: var(--do-text);
}

.deadline-optimizer-container .btn-outline:hover {
    border-color: var(--do-primary);
    color: var(--do-primary);
}

.deadline-optimizer-container .btn-danger {
    background: var(--do-danger);
    color: white;
}

.deadline-optimizer-container .btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Forms */
.assignment-form-card {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.dark-theme .assignment-form-card {
    background: rgba(255, 255, 255, 0.03);
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(var(--do-primary-rgb), 0.05);
    border-bottom: 1px solid var(--do-border);
}

.form-header h4 {
    margin: 0;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-header h4 i {
    color: var(--do-primary);
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--do-text-muted);
}

.form-body {
    padding: 1.5rem;
}

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

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--do-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--do-primary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    background: var(--do-bg);
    color: var(--do-text);
    font-size: 0.9rem;
    transition: var(--do-transition);
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--do-border);
}

/* Assignment Cards */
.assignment-card {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: var(--do-transition);
    position: relative;
    overflow: hidden;
}

.dark-theme .assignment-card {
    background: rgba(255, 255, 255, 0.03);
}

.assignment-card:hover {
    border-color: rgba(var(--do-primary-rgb), 0.3);
    transform: translateY(-2px);
    box-shadow: var(--do-shadow);
}

.assignment-card.urgent {
    border-left: 4px solid var(--do-danger);
}

.assignment-card.warning {
    border-left: 4px solid var(--do-warning);
}

.assignment-card.completed {
    opacity: 0.7;
}

.assignment-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.assignment-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.assignment-subject {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.assignment-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.assignment-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.assignment-badge.easy {
    background: rgba(34, 197, 94, 0.1);
    color: var(--do-success);
}

.assignment-badge.medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--do-warning);
}

.assignment-badge.hard {
    background: rgba(239, 68, 68, 0.1);
    color: var(--do-danger);
}

.assignment-badge.type {
    background: rgba(var(--do-primary-rgb), 0.1);
    color: var(--do-primary);
}

.assignment-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.assignment-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--do-text-muted);
}

.assignment-meta-item i {
    color: var(--do-primary);
}

.assignment-meta-item.urgent i {
    color: var(--do-danger);
}

.assignment-progress {
    margin-bottom: 1rem;
}

.progress-bar {
    height: 8px;
    background: var(--do-border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--do-gradient);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--do-text-muted);
    margin-top: 0.5rem;
}

.assignment-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Priority Tasks */
.priority-task {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 0.5rem;
    transition: var(--do-transition);
}

.priority-task:hover {
    border-color: var(--do-primary);
}

.priority-task .task-checkbox {
    width: 24px;
    height: 24px;
    border: 2px solid var(--do-border);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--do-transition);
    flex-shrink: 0;
}

.priority-task .task-checkbox.checked {
    background: var(--do-success);
    border-color: var(--do-success);
    color: white;
}

.priority-task .task-info {
    flex: 1;
}

.priority-task .task-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.priority-task .task-meta {
    font-size: 0.8rem;
    color: var(--do-text-muted);
}

.priority-task .task-urgency {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.priority-task .task-urgency.high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--do-danger);
}

.priority-task .task-urgency.medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--do-warning);
}

.priority-task .task-urgency.low {
    background: rgba(34, 197, 94, 0.1);
    color: var(--do-success);
}

/* Timeline */
.timeline-container {
    position: relative;
    padding-left: 20px;
}

.timeline-item {
    position: relative;
    padding: 0.75rem 0 0.75rem 1.5rem;
    border-left: 2px solid var(--do-border);
}

.timeline-item:last-child {
    border-left-color: transparent;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -7px;
    top: 1rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--do-bg);
    border: 2px solid var(--do-primary);
}

.timeline-item.urgent::before {
    border-color: var(--do-danger);
    background: var(--do-danger);
}

.timeline-item.warning::before {
    border-color: var(--do-warning);
}

.timeline-item.completed::before {
    border-color: var(--do-success);
    background: var(--do-success);
}

.timeline-content {
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 0.75rem 1rem;
}

.timeline-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.timeline-date {
    font-size: 0.8rem;
    color: var(--do-text-muted);
}

/* Workload Chart */
.workload-chart {
    position: relative;
}

.workload-bars {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 150px;
    gap: 0.5rem;
    padding-bottom: 2rem;
}

.workload-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.workload-bar {
    width: 100%;
    background: var(--do-gradient);
    border-radius: 4px 4px 0 0;
    min-height: 4px;
    transition: height 0.3s ease;
}

.workload-bar.overload {
    background: var(--do-danger);
}

.workload-label {
    font-size: 0.75rem;
    color: var(--do-text-muted);
    margin-top: 0.5rem;
}

.workload-limit-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--do-danger);
    opacity: 0.5;
}

/* Streak Display */
.streak-display {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.streak-flame {
    position: relative;
    text-align: center;
}

.streak-flame i {
    font-size: 3rem;
    color: #f59e0b;
    filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.5));
}

.streak-flame .streak-number {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.streak-info {
    display: flex;
    flex-direction: column;
}

.streak-info .streak-label {
    font-weight: 600;
}

.streak-info .streak-best {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.badges-preview {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
}

.badge-icon.locked {
    background: var(--do-border);
    color: var(--do-text-muted);
    opacity: 0.5;
}

.badge-icon.unlocked {
    background: var(--do-gradient);
}

/* Score Circle */
.score-circle-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
}

.score-circle {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-bg {
    fill: none;
    stroke: var(--do-border);
    stroke-width: 8;
}

.score-fill {
    fill: none;
    stroke: url(#scoreGrad);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 339.292;
    stroke-dashoffset: 339.292;
    transition: stroke-dashoffset 0.5s ease;
}

.score-center-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-center-text span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--do-primary);
    display: block;
}

.score-center-text small {
    font-size: 0.7rem;
    color: var(--do-text-muted);
}

.score-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.score-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.score-item span {
    font-size: 0.8rem;
    color: var(--do-text-muted);
    width: 100px;
}

.score-item .score-bar {
    flex: 1;
    height: 6px;
    background: var(--do-border);
    border-radius: 3px;
    overflow: hidden;
}

.score-item .score-fill {
    height: 100%;
    background: var(--do-gradient);
    border-radius: 3px;
}

/* Calendar */
.calendar-container {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 1rem;
}

.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.calendar-day-name {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--do-text-muted);
    padding: 0.5rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 0.5rem;
    border: 1px solid transparent;
    border-radius: var(--do-radius);
    cursor: pointer;
    transition: var(--do-transition);
    position: relative;
}

.calendar-day:hover {
    background: rgba(var(--do-primary-rgb), 0.05);
    border-color: var(--do-primary);
}

.calendar-day.today {
    background: rgba(var(--do-primary-rgb), 0.1);
    border-color: var(--do-primary);
}

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

.calendar-day .day-number {
    font-weight: 600;
    font-size: 0.9rem;
}

.calendar-day .day-dots {
    display: flex;
    gap: 3px;
    margin-top: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

.calendar-day .day-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.calendar-day .day-dot.urgent {
    background: var(--do-danger);
}

.calendar-day .day-dot.warning {
    background: var(--do-warning);
}

.calendar-day .day-dot.normal {
    background: var(--do-primary);
}

.calendar-day .day-dot.completed {
    background: var(--do-success);
}

.calendar-legend {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-dot.urgent {
    background: var(--do-danger);
}

.legend-dot.warning {
    background: var(--do-warning);
}

.legend-dot.normal {
    background: var(--do-primary);
}

.legend-dot.completed {
    background: var(--do-success);
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.month-year-label {
    font-weight: 600;
    min-width: 150px;
    text-align: center;
}

/* Daily Tasks */
.date-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.current-date-label {
    font-weight: 600;
    min-width: 150px;
    text-align: center;
}

.daily-progress-bar {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.daily-progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.daily-progress-track {
    height: 10px;
    background: var(--do-border);
    border-radius: 5px;
    overflow: hidden;
}

.daily-progress-fill {
    height: 100%;
    background: var(--do-gradient);
    border-radius: 5px;
    transition: width 0.3s ease;
}

.daily-task-group {
    margin-bottom: 1.5rem;
}

.daily-task-group h4 {
    font-size: 0.9rem;
    color: var(--do-text-muted);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.daily-task {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 0.5rem;
    transition: var(--do-transition);
}

.daily-task:hover {
    border-color: var(--do-primary);
}

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

.daily-task.completed .task-title {
    text-decoration: line-through;
}

.task-checkbox {
    width: 28px;
    height: 28px;
    border: 2px solid var(--do-border);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--do-transition);
    flex-shrink: 0;
    background: var(--do-bg);
}

.task-checkbox:hover {
    border-color: var(--do-primary);
}

.task-checkbox.checked {
    background: var(--do-success);
    border-color: var(--do-success);
    color: white;
}

.task-content {
    flex: 1;
}

.task-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.task-subtitle {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.task-time {
    font-size: 0.85rem;
    color: var(--do-primary);
    font-weight: 600;
}

/* Analytics */
.analytics-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
}

.stat-card .stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.stat-card.primary .stat-icon {
    background: var(--do-primary);
}

.stat-card.success .stat-icon {
    background: var(--do-success);
}

.stat-card.info .stat-icon {
    background: var(--do-info);
}

.stat-card.warning .stat-icon {
    background: var(--do-warning);
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    display: block;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.chart-card {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 1.25rem;
}

.chart-card.full-width {
    grid-column: span 2;
}

.chart-card h4 {
    font-size: 1rem;
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-card h4 i {
    color: var(--do-primary);
}

.productivity-chart {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 120px;
    gap: 0.5rem;
}

.productivity-bar {
    flex: 1;
    background: var(--do-gradient);
    border-radius: 4px 4px 0 0;
    transition: height 0.3s ease;
}

.type-distribution {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.type-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.type-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.type-name {
    flex: 1;
    font-size: 0.9rem;
}

.type-count {
    font-weight: 600;
}

.completion-heatmap {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 4px;
    margin-bottom: 0.75rem;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 3px;
}

.heatmap-cell.level-0 {
    background: var(--do-border);
}

.heatmap-cell.level-1 {
    background: rgba(var(--do-primary-rgb), 0.25);
}

.heatmap-cell.level-2 {
    background: rgba(var(--do-primary-rgb), 0.5);
}

.heatmap-cell.level-3 {
    background: rgba(var(--do-primary-rgb), 0.75);
}

.heatmap-cell.level-4 {
    background: var(--do-primary);
}

.heatmap-legend {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--do-text-muted);
}

.legend-box {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.legend-box.level-0 {
    background: var(--do-border);
}

.legend-box.level-1 {
    background: rgba(var(--do-primary-rgb), 0.25);
}

.legend-box.level-2 {
    background: rgba(var(--do-primary-rgb), 0.5);
}

.legend-box.level-3 {
    background: rgba(var(--do-primary-rgb), 0.75);
}

.legend-box.level-4 {
    background: var(--do-primary);
}

/* Badges */
.badges-section {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.badges-section h4 {
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.badges-section h4 i {
    color: #f59e0b;
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    transition: var(--do-transition);
}

.badge-item.locked {
    opacity: 0.5;
}

.badge-item .badge-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 0.5rem;
}

.badge-item .badge-name {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.badge-item .badge-desc {
    font-size: 0.75rem;
    color: var(--do-text-muted);
}

/* Completed List */
.completed-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 0.5rem;
}

.completed-icon {
    width: 40px;
    height: 40px;
    background: rgba(34, 197, 94, 0.1);
    color: var(--do-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.completed-info {
    flex: 1;
}

.completed-title {
    font-weight: 600;
}

.completed-meta {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.completed-date {
    font-size: 0.85rem;
    color: var(--do-success);
}

/* Modal */
.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;
    padding: 1rem;
}

.modal-content {
    background: var(--do-bg);
    border-radius: var(--do-radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.modal-content.modal-large {
    max-width: 800px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--do-border);
}

.modal-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-header h3 i {
    color: var(--do-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--do-text-muted);
}

.modal-body {
    padding: 1.5rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--do-border);
}

/* Settings */
.settings-section {
    margin-bottom: 2rem;
}

.settings-section h4 {
    font-size: 1rem;
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--do-border);
}

.settings-section h4 i {
    color: var(--do-primary);
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
}

.setting-row label {
    font-size: 0.9rem;
}

.setting-row input[type="number"],
.setting-row input[type="time"] {
    width: 100px;
    padding: 0.5rem;
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    background: var(--do-bg);
    color: var(--do-text);
}

.setting-row.toggle-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
}

.break-days-grid {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.day-checkbox {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    cursor: pointer;
    transition: var(--do-transition);
}

.day-checkbox:has(input:checked) {
    border-color: var(--do-primary);
    background: rgba(var(--do-primary-rgb), 0.1);
}

.day-checkbox input {
    display: none;
}

.day-checkbox span {
    font-size: 0.85rem;
    font-weight: 600;
}

/* Backup */
.backup-section {
    padding: 1.5rem;
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 1rem;
}

.backup-section h4 {
    margin: 0 0 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.backup-section h4 i {
    color: var(--do-primary);
}

.backup-section p {
    font-size: 0.9rem;
    color: var(--do-text-muted);
    margin-bottom: 1rem;
}

.backup-section.danger {
    border-color: rgba(239, 68, 68, 0.3);
}

.backup-section.danger h4 i {
    color: var(--do-danger);
}

.warning-text {
    color: var(--do-danger);
}

/* Help */
.help-section {
    margin-bottom: 2rem;
}

.help-section h4 {
    font-size: 1rem;
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.help-section h4 i {
    color: var(--do-primary);
}

.help-section ol,
.help-section ul {
    margin: 0;
    padding-left: 1.5rem;
}

.help-section li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.help-section kbd {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}

/* Notifications Panel */
.notifications-panel {
    position: fixed;
    top: 70px;
    right: 20px;
    width: 350px;
    max-height: 400px;
    background: var(--do-bg);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    box-shadow: var(--do-shadow);
    z-index: 999;
    overflow: hidden;
}

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

.notifications-header h4 {
    margin: 0;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.notifications-header h4 i {
    color: var(--do-primary);
}

.notifications-list {
    max-height: 300px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 0.75rem;
    padding: 1rem;
    border-bottom: 1px solid var(--do-border);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--do-warning);
}

.notification-icon.danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--do-danger);
}

.notification-icon.info {
    background: rgba(var(--do-primary-rgb), 0.1);
    color: var(--do-primary);
}

.notification-content {
    flex: 1;
}

.notification-text {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.notification-time {
    font-size: 0.75rem;
    color: var(--do-text-muted);
}

/* Schedule View */
.schedule-view-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.view-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--do-border);
    background: var(--do-bg);
    border-radius: var(--do-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--do-transition);
}

.view-btn:hover {
    border-color: var(--do-primary);
}

.view-btn.active {
    background: var(--do-primary);
    color: white;
    border-color: var(--do-primary);
}

.optimized-schedule {
    min-height: 300px;
}

.schedule-day {
    background: var(--do-surface);
    border: 1px solid var(--do-border);
    border-radius: var(--do-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.schedule-day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(var(--do-primary-rgb), 0.05);
    border-bottom: 1px solid var(--do-border);
}

.schedule-day-title {
    font-weight: 600;
}

.schedule-day-hours {
    font-size: 0.85rem;
    color: var(--do-text-muted);
}

.schedule-day-tasks {
    padding: 0.5rem;
}

.schedule-task {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--do-radius);
    margin-bottom: 0.5rem;
    background: var(--do-bg);
    border-left: 4px solid var(--do-primary);
}

.schedule-task.urgent {
    border-left-color: var(--do-danger);
}

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

.schedule-task .task-details {
    flex: 1;
}

.schedule-task .task-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.schedule-task .task-assignment {
    font-size: 0.8rem;
    color: var(--do-text-muted);
}

.schedule-task .task-hours {
    font-size: 0.85rem;
    color: var(--do-primary);
    font-weight: 600;
}

/* Risk Items */
.risk-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--do-radius);
    margin-bottom: 0.5rem;
}

.risk-item i {
    color: var(--do-danger);
    margin-top: 2px;
}

.risk-item .risk-text {
    flex: 1;
    font-size: 0.9rem;
}

.risk-item .risk-action {
    font-size: 0.8rem;
    color: var(--do-primary);
    cursor: pointer;
}

/* Responsive */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .priority-card,
    .workload-card {
        grid-column: span 2;
    }

    .analytics-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .chart-card.full-width {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .deadline-optimizer-container {
        padding: 1rem;
    }

    .optimizer-header {
        flex-direction: column;
        text-align: center;
    }

    .header-content {
        flex-direction: column;
    }

    .quick-stats-bar {
        grid-template-columns: repeat(3, 1fr);
    }

    .content-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .content-tab span {
        display: none;
    }

    .content-tab {
        padding: 0.75rem;
    }

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

    .priority-card,
    .workload-card {
        grid-column: span 1;
    }

    .panel-header {
        flex-direction: column;
        align-items: stretch;
    }

    .panel-actions {
        flex-direction: column;
    }

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

    .assignment-header {
        flex-direction: column;
    }

    .assignment-badges {
        margin-top: 0.5rem;
    }

    .assignment-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .analytics-stats {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1rem;
    }

    .calendar-grid {
        gap: 0.25rem;
    }

    .calendar-day {
        padding: 0.25rem;
    }

    .calendar-day .day-number {
        font-size: 0.8rem;
    }

    .notifications-panel {
        width: calc(100% - 2rem);
        right: 1rem;
        left: 1rem;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }

    .date-nav,
    .calendar-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .badges-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 480px) {
    .quick-stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .quick-stat:last-child {
        grid-column: span 2;
    }

    .header-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .header-text h2 {
        font-size: 1.5rem;
    }

    .calendar-day-name {
        font-size: 0.7rem;
    }

    .break-days-grid {
        justify-content: center;
    }
}