@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Sarabun:wght@300;400;500;600;700&display=swap');

:root {
    /* Color Palette - Light Mode */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #06b6d4;
    --info-light: #ecfeff;
    
    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --hover-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --border-radius: 12px;
    --font-heading: 'Outfit', 'Sarabun', sans-serif;
    --font-body: 'Sarabun', 'Outfit', sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Color Palette - Dark Mode */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #312e81;
    
    --success: #10b981;
    --success-light: #064e3b;
    --warning: #fbbf24;
    --warning-light: #78350f;
    --danger: #f87171;
    --danger-light: #7f1d1d;
    --info: #22d3ee;
    --info-light: #083344;
    
    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --hover-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

/* Header & Navigation */
header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--info));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.25rem;
    font-family: var(--font-heading);
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.2;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-tabs {
    display: flex;
    background-color: var(--bg-tertiary);
    padding: 0.25rem;
    border-radius: 10px;
    gap: 0.25rem;
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.6rem 1.2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 550;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.tab-btn.active {
    background-color: var(--bg-secondary);
    color: var(--primary);
    box-shadow: var(--card-shadow);
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transform: rotate(15deg);
}

/* Layout Main Container */
main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

.view-section {
    display: none;
    animation: fadeIn 0.4s ease;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* General UI Components */
h2 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

h2 .subtitle {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

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

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

.btn-danger {
    background-color: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

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

/* Dashboard Metrics */
.dashboard-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.metric-info h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 550;
    margin-bottom: 0.25rem;
}

.metric-info p {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
}

/* Team Performance Overview */
.team-dashboard-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
    align-items: start;
    margin-bottom: 2rem;
}

.team-list-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.team-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.team-list-header h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
}

.member-progress-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.member-progress-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.member-progress-item:first-child {
    padding-top: 0;
}

.member-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.member-name-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.member-avatar {
    width: 28px;
    height: 28px;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-family: var(--font-heading);
    font-weight: 700;
}

.member-stats {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.progress-bar-container {
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--info));
    border-radius: 4px;
    width: 0%;
    transition: width 0.6s ease;
}

/* Quick Member Management */
.quick-member-manage {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.quick-member-manage h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.member-list-mini {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 250px;
    overflow-y: auto;
    margin-bottom: 1rem;
    padding-right: 0.25rem;
}

.member-list-mini::-webkit-scrollbar {
    width: 4px;
}
.member-list-mini::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 2px;
}

.mini-member-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    transition: var(--transition);
}

.mini-member-card:hover {
    background-color: var(--border-color);
}

.mini-member-name {
    font-size: 0.85rem;
    font-weight: 550;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.mini-member-actions {
    display: flex;
    gap: 0.25rem;
}

.mini-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.2rem;
    border-radius: 4px;
    transition: var(--transition);
}

.mini-btn:hover {
    color: var(--text-primary);
}

.mini-btn-delete:hover {
    color: var(--danger);
    background-color: var(--danger-light);
}

.add-member-form {
    display: flex;
    gap: 0.5rem;
}

.add-member-form input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.85rem;
}

.add-member-form input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Filtering & Actions bar */
.table-controls {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.filter-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-control {
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.85rem;
    width: 100%;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--bg-secondary);
}

.table-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.export-group {
    display: flex;
    gap: 0.75rem;
}

/* Task Overview Table */
.table-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
}

.responsive-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.responsive-table th,
.responsive-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.responsive-table th {
    background-color: var(--bg-tertiary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.responsive-table tr:last-child td {
    border-bottom: none;
}

.responsive-table tbody tr {
    transition: var(--transition);
}

.responsive-table tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.02);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-todo {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-progress {
    background-color: var(--info-light);
    color: var(--info);
}

.badge-review {
    background-color: var(--warning-light);
    color: var(--warning);
}

.badge-done {
    background-color: var(--success-light);
    color: var(--success);
}

/* Star Ratings for Success Score */
.stars-container {
    display: flex;
    gap: 2px;
    color: var(--warning);
}

.star {
    font-size: 0.95rem;
}

.star.empty {
    color: var(--border-color);
}

/* Team Member Selector View */
.member-selector-bar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.member-select-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.member-select-wrapper label {
    font-weight: 700;
    color: var(--text-secondary);
}

.member-dropdown {
    padding: 0.5rem 2rem 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23475569'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    transition: var(--transition);
}

.member-dropdown:focus {
    border-color: var(--primary);
}

/* Kanban Board Styling */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    align-items: start;
}

@media (max-width: 1024px) {
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.kanban-column {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 1rem;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 1px solid transparent;
    transition: var(--transition);
}

.kanban-column.drag-over {
    background-color: var(--border-color);
    border: 1px dashed var(--primary);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.column-header h3 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.task-count {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: var(--card-shadow);
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
    overflow-y: auto;
    max-height: 650px;
    padding: 0.25rem;
}

/* Task Card in Kanban */
.task-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--card-shadow);
    cursor: grab;
    transition: var(--transition);
    user-select: none;
}

.task-card:active {
    cursor: grabbing;
}

.task-card.dragging {
    opacity: 0.4;
    transform: scale(0.98);
}

.task-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
    border-color: rgba(79, 70, 229, 0.3);
}

.task-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.task-card-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.3;
}

.task-card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    word-break: break-word;
}

.task-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--border-color);
    font-size: 0.75rem;
}

.task-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
}

.task-meta-label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.task-deadline-tag {
    font-weight: 600;
    color: var(--text-secondary);
}

.task-deadline-tag.overdue {
    color: var(--danger);
    background-color: var(--danger-light);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: all;
}

.modal-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 550px;
    padding: 1.75rem;
    box-shadow: var(--hover-shadow);
    transform: scale(0.95);
    transition: var(--transition);
}

.modal-backdrop.active .modal-container {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-muted);
    line-height: 1;
}

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

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Score selector inputs in modal */
.score-selector {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.score-star-input {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--border-color);
    transition: var(--transition);
}

.score-star-input.active {
    color: var(--warning);
}

/* Footer Styling */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: auto;
    transition: var(--transition);
}

/* Responsive Overrides */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    .nav-controls {
        justify-content: space-between;
    }
    main {
        padding: 1rem;
    }
    .team-dashboard-layout {
        grid-template-columns: 1fr;
    }
    .table-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .export-group {
        justify-content: space-between;
    }
}