/* ======================= */
/* VARIABLES Y RESET GLOBAL */
/* ======================= */

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --accent: #f5576c;
    --success: #43e97b;
    --warning: #ffa502;
    --danger: #e74c3c;
    --info: #3498db;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #475569;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --transition: all 0.3s ease;
}

/* Tema Claro */
:root[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* ======================= */
/* LAYOUT PRINCIPAL */
/* ======================= */

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

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    z-index: 100;
    position: relative;
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar.collapsed .logo span,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .sidebar-footer span {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    padding: 16px 8px;
    text-align: center;
}

.sidebar.collapsed .logo {
    justify-content: center;
    gap: 0;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    gap: 0;
}

.sidebar.collapsed .sidebar-footer {
    padding: 8px;
}

.sidebar.collapsed .sidebar-footer button {
    width: 100%;
    padding: 8px !important;
    justify-content: center;
}

.toggle-sidebar-btn {
    position: absolute;
    right: -12px;
    top: 16px;
    width: 24px;
    height: 24px;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: var(--transition);
    z-index: 101;
}

.toggle-sidebar-btn:hover {
    background: var(--secondary);
    transform: scale(1.1);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.logo i {
    font-size: 24px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 8px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin: 4px 0;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
    background: var(--primary);
    color: white;
}

.nav-item i {
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

#pageTitle {
    font-size: 24px;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.user-profile img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

.content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

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

/* ======================= */
/* BOTONES */
/* ======================= */

.btn-primary,
.btn-secondary,
.btn-tertiary,
.btn-danger,
.btn-icon,
.btn-close {
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    padding: 10px 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled,
button[disabled].btn-primary {
    opacity: 0.5;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: none !important;
}

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

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

.btn-secondary:disabled,
button[disabled].btn-secondary {
    opacity: 0.5;
    cursor: not-allowed !important;
}

.btn-tertiary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-danger {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger);
    border: 1px solid var(--danger);
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    justify-content: center;
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-close {
    width: 32px;
    height: 32px;
    padding: 0;
    justify-content: center;
    background: transparent;
    color: var(--text-secondary);
    font-size: 24px;
}

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

/* ======================= */
/* DASHBOARD */
/* ======================= */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 24px;
    flex-shrink: 0;
}

.stat-content h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
}

.dashboard-section {
    margin-top: 32px;
}

.dashboard-section h2 {
    margin-bottom: 20px;
    font-size: 20px;
}

.projects-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* ======================= */
/* CARDS DE PROYECTO */
/* ======================= */

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 300px;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.project-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.project-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.project-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-planning {
    background: rgba(255, 165, 2, 0.1);
    color: var(--warning);
}

.status-active {
    background: rgba(67, 233, 123, 0.1);
    color: var(--success);
}

.status-paused {
    background: rgba(100, 116, 139, 0.1);
    color: var(--text-secondary);
}

.status-completed {
    background: rgba(52, 152, 219, 0.1);
    color: var(--info);
}

.project-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.5;
    flex: 1;
}

.project-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.project-card-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.project-progress {
    margin-bottom: 16px;
}

.project-card-actions {
    display: flex;
    gap: 8px;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

.archived-card {
    opacity: 0.75;
    border: 2px dashed var(--border-color);
}

.archived-card::before {
    background: linear-gradient(90deg, var(--text-secondary), var(--text-secondary));
    opacity: 0.5;
}

.archived-card:hover {
    opacity: 1;
    transform: translateY(0);
}

/* ======================= */
/* KANBAN BOARD */
/* ======================= */

.kanban-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.kanban-filters {
    display: flex;
    gap: 12px;
}

.select-small {
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.kanban-board {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    height: calc(100vh - 180px); /* Altura fija para permitir scroll interno */
    overflow: hidden; /* Evitar scroll en el tablero */
    padding-bottom: 2px;
}

.kanban-column {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px;
    display: flex;
    flex-direction: column;
    height: 100%; /* Ocupar toda la altura del tablero */
    min-width: 280px;
    overflow: hidden; /* Contener los hijos */
}

.kanban-column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
    flex-shrink: 0;
}

.kanban-column-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.kanban-column-count {
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.kanban-items {
    flex: 1;
    overflow-y: auto; /* Scroll aquí */
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-right: 4px; /* Espacio para scrollbar */
    padding-bottom: 4px;
}

/* Scrollbar personalizado para las columnas */
.kanban-items::-webkit-scrollbar {
    width: 6px;
}

.kanban-items::-webkit-scrollbar-track {
    background: transparent;
}

.kanban-items::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.kanban-items::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

.kanban-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.kanban-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.kanban-item:active {
    cursor: grabbing;
}

.kanban-item.dragging {
    opacity: 0.5;
    transform: scale(0.95);
    cursor: grabbing;
}

.kanban-items.drag-over {
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-md);
    border: 2px dashed var(--primary);
}

.kanban-item-title {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.kanban-item-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
}

.kanban-item-priority {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.priority-critical {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger);
}

.priority-high {
    background: rgba(245, 87, 108, 0.2);
    color: var(--accent);
}

.priority-medium {
    background: rgba(255, 165, 2, 0.2);
    color: var(--warning);
}

.priority-low {
    background: rgba(67, 233, 123, 0.2);
    color: var(--success);
}

/* ======================= */
/* GANTT CHART */
/* ======================= */

.gantt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.gantt-filters {
    display: flex;
    gap: 12px;
}

.gantt-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    flex-direction: column;
}

.gantt-wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.gantt-header-row {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    overflow: hidden;
}

.gantt-header-labels {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gantt-header-title {
    padding: 12px;
    font-weight: 700;
    font-size: 13px;
    color: white;
    width: 100%;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    text-align: center;
    line-height: 1.4;
}

.gantt-header-dates-wrapper {
    display: flex;
    flex-direction: column;
    overflow-x: auto;
    overflow-y: hidden;
}

.gantt-header-fixed {
    width: 220px;
    flex-shrink: 0;
}

.gantt-header-scroll {
    display: flex;
    flex-direction: column;
    overflow-x: auto;
    overflow-y: hidden;
    flex-shrink: 0;
    border-bottom: 2px solid var(--border-color);
}

.gantt-header-timeline {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.gantt-week {
    padding: 8px;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    border-right: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gantt-date-header {
    display: flex;
    background: var(--bg-secondary);
}

.gantt-day-header {
    padding: 8px;
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
    border-right: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.gantt-day-header.today {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.gantt-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.gantt-labels-scroll {
    display: flex;
    flex-direction: column;
    gap: 0;
    flex-shrink: 0;
    overflow-y: auto;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
}

.gantt-bars-scroll {
    flex: 1;
    overflow-x: auto;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.gantt-chart {
    display: flex;
    flex-direction: column;
    position: relative;
}

.gantt-bars {
    display: flex;
    flex-direction: column;
    position: relative;
}

.gantt-project-header {
    padding: 10px 12px;
    background: var(--primary);
    color: white;
    font-weight: 600;
    font-size: 13px;
    border-radius: 0;
    margin: 0;
    border-bottom: 1px solid var(--border-color);
    line-height: 1.4;
    text-align: left;
}

.gantt-project-header-bar {
    background: var(--primary);
    border-bottom: 1px solid var(--border-color);
    box-sizing: border-box;
}

.gantt-label {
    padding: 10px 12px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
    box-sizing: border-box;
}

.gantt-label:hover {
    background: var(--bg-tertiary);
}

.gantt-label-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 13px;
    line-height: 1.4;
}

.gantt-progress-label {
    font-weight: 600;
    color: var(--primary);
    min-width: 40px;
    text-align: right;
    flex-shrink: 0;
    font-size: 12px;
}

.gantt-bar-row {
    display: flex;
    align-items: center;
    position: relative;
    gap: 0;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.gantt-bar-row:hover {
    background: rgba(102, 126, 234, 0.05);
}

.gantt-bar-container {
    position: relative;
    width: 100%;
}

.gantt-bar {
    position: absolute;
    top: 8px;
    height: 28px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.gantt-bar:hover {
    filter: brightness(1.15);
    box-shadow: var(--shadow-lg);
}

.gantt-bar:hover {
    filter: brightness(1.15);
    box-shadow: var(--shadow-lg);
}

/* ======================= */
/* EQUIPO */
/* ======================= */

.team-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.team-member-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
}

.team-member-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    border: 3px solid var(--primary);
    object-fit: cover;
}

.member-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.member-role {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 12px;
}

.member-tasks {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.member-actions {
    display: flex;
    gap: 8px;
}

.member-actions button {
    flex: 1;
}

/* ======================= */
/* FORMULARIOS */
/* ======================= */

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
}

.form-group input[type="number"] {
    width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* ======================= */
/* MODALES */
/* ======================= */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
}

.modal-body {
    padding: 24px;
}

/* ======================= */
/* NOTIFICACIONES */
/* ======================= */

.toast {
    position: fixed;
    bottom: -100px;
    right: 20px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transition: bottom 0.3s ease;
    max-width: 400px;
}

.toast.show {
    bottom: 20px;
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--danger);
}

.toast.warning {
    border-left-color: var(--warning);
}

/* ======================= */
/* CONFIGURACIÓN */
/* ======================= */

.settings-group {
    margin-bottom: 24px;
}

.settings-item {
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.settings-label {
    margin-bottom: 12px;
}

.settings-label span {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
}

.theme-toggle {
    display: flex;
    gap: 12px;
}

.toggle-option {
    flex: 1;
    position: relative;
}

.toggle-option input[type="radio"] {
    display: none;
}

.toggle-option span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
}

.toggle-option input[type="radio"]:checked + span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* INPUT RANGE (SLIDER) */
input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

input[type="range"]::-webkit-slider-runnable-track {
    background: var(--bg-tertiary);
    height: 6px;
    border-radius: 3px;
}

input[type="range"]::-moz-range-track {
    background: var(--bg-tertiary);
    height: 6px;
    border-radius: 3px;
}

/* ======================= */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ======================= */
/* RESPONSIVE */
/* ======================= */

@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        left: -260px;
        height: 100vh;
        z-index: 999;
    }

    .sidebar.collapsed {
        width: 260px;
    }

    .sidebar.collapsed .logo span,
    .sidebar.collapsed .nav-item span,
    .sidebar.collapsed .sidebar-footer span {
        display: inline;
    }

    .sidebar.collapsed .sidebar-header {
        padding: 24px 20px;
        text-align: left;
    }

    .sidebar.collapsed .logo {
        justify-content: flex-start;
        gap: 12px;
    }

    .sidebar.collapsed .nav-item {
        justify-content: flex-start;
        gap: 12px;
    }

    .sidebar.collapsed .sidebar-footer {
        padding: 16px;
    }

    .sidebar.collapsed .sidebar-footer button {
        width: 100%;
        justify-content: flex-start;
        padding: 10px 16px !important;
    }

    .toggle-sidebar-btn {
        display: none;
    }

    .sidebar.open {
        left: 0;
    }

    .app-header {
        padding: 12px 16px;
    }

    .header-left h1 {
        font-size: 18px;
    }

    .header-right {
        gap: 12px;
    }

    .btn-primary span,
    .btn-secondary span {
        display: none;
    }

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

    .kanban-board {
        grid-template-columns: 1fr;
    }

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

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