/* ========================================
   INTRANET — Styles
   ======================================== */

/* === CSS Variables === */
:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --primary-bg: #EEF2FF;
    --success: #10B981;
    --success-bg: #ECFDF5;
    --warning: #F59E0B;
    --warning-bg: #FFFBEB;
    --danger: #EF4444;
    --danger-bg: #FEF2F2;
    --info: #3B82F6;
    --info-bg: #EFF6FF;
    --bg: #F9FAFB;
    --sidebar-bg: #1F2937;
    --sidebar-hover: #374151;
    --sidebar-active: #4F46E5;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --border: #E5E7EB;
    --card-bg: #FFFFFF;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --radius: 8px;
    --radius-lg: 12px;
    --sidebar-width: 250px;
    --sidebar-collapsed: 60px;
    --transition: 0.2s ease;
    --transition-slow: 0.3s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
}

/* === Login Screen === */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #C7D2FE 100%);
    padding: 20px;
}

.login-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    animation: fadeInUp 0.4s ease;
}

.login-logo {
    text-align: center;
    margin-bottom: 8px;
}

.logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 28px;
    font-weight: 700;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.logo-icon-sm {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 16px;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.login-card h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 28px;
    font-size: 0.9rem;
}

.login-error {
    background: var(--danger-bg);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    margin-bottom: 16px;
    border: 1px solid #FECACA;
}

/* === Main Layout === */
.main-layout {
    display: flex;
    min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition-slow);
    overflow: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    min-height: 60px;
}

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

.logo-text {
    font-size: 1.1rem;
    font-weight: 600;
    white-space: nowrap;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: background var(--transition);
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: var(--sidebar-hover);
    color: white;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-light);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.9rem;
    font-weight: 400;
    white-space: nowrap;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.nav-item i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: white;
}

.nav-item.active {
    background: var(--sidebar-active);
    color: white;
    font-weight: 500;
}

.nav-item .nav-text {
    opacity: 1;
    transition: opacity var(--transition-slow);
}

/* Sidebar collapsed */
.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .user-details {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-footer {
    justify-content: center;
}

.sidebar.collapsed .user-info {
    gap: 0;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    white-space: nowrap;
    transition: opacity var(--transition-slow);
}

.user-name {
    font-size: 0.85rem;
    font-weight: 500;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: capitalize;
}

.btn-logout {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all var(--transition);
    flex-shrink: 0;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

/* === Content === */
.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    transition: margin-left var(--transition-slow);
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.page-content {
    animation: fadeIn 0.25s ease;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font);
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

.btn-outline:hover:not(:disabled) {
    background: var(--bg);
    border-color: var(--text-light);
    color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
    background: #DC2626;
}

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

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    padding: 6px;
    border-radius: var(--radius);
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

/* === Cards === */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

/* Project cards grid */
.proyectos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.proyecto-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition);
}

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

.proyecto-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.proyecto-card .proyecto-responsable {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.proyecto-card .proyecto-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* === Form styles === */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 9px 12px;
    font-size: 0.9rem;
    font-family: var(--font);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    color: var(--text-primary);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236B7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

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

.form-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

/* === Filters bar === */
.filters-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.filters-bar .form-input,
.filters-bar .form-select {
    width: auto;
    min-width: 180px;
}

/* === Table === */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

table.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table.table th {
    background: var(--bg);
    text-align: left;
    padding: 10px 14px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table.table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

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

table.table tbody tr:hover {
    background: #F3F4F6;
}

table.table .table-actions {
    display: flex;
    gap: 6px;
    white-space: nowrap;
}

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    white-space: nowrap;
}

.badge-success { background: var(--success-bg); color: #065F46; }
.badge-warning { background: var(--warning-bg); color: #92400E; }
.badge-danger { background: var(--danger-bg); color: #991B1B; }
.badge-info { background: var(--info-bg); color: #1E40AF; }
.badge-primary { background: var(--primary-bg); color: var(--primary-dark); }

/* === Progress Bar === */
.progress-bar {
    width: 100%;
    height: 8px;
    background: #E5E7EB;
    border-radius: 9999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.4s ease;
    background: var(--primary);
}

.progress-fill.success { background: var(--success); }
.progress-fill.warning { background: var(--warning); }
.progress-fill.danger { background: var(--danger); }

.progress-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
    font-size: 0.8rem;
}

.progress-label span:last-child {
    font-weight: 600;
}

/* === Tabs === */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab {
    padding: 10px 18px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font);
    white-space: nowrap;
    transition: all var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

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

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

/* === Modal === */
.modal-overlay {
    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: 20px;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.25s ease;
}

.modal-content.modal-lg {
    max-width: 720px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all var(--transition);
    line-height: 1;
}

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    background: var(--bg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* === Kanban === */
.kanban-board {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    min-height: 300px;
}

.kanban-column {
    background: #F3F4F6;
    border-radius: var(--radius-lg);
    padding: 12px;
}

.kanban-column-header {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding: 4px 8px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.kanban-column-header .count {
    background: var(--border);
    padding: 1px 8px;
    border-radius: 9999px;
    font-size: 0.75rem;
}

.kanban-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    margin-bottom: 8px;
    cursor: grab;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.kanban-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.kanban-card:active { cursor: grabbing; }
.kanban-card.dragging { opacity: 0.5; transform: rotate(2deg); }
.kanban-card.drag-over { border-color: var(--primary); background: var(--primary-bg); }

.kanban-card .kanban-card-title {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.kanban-card .kanban-card-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.kanban-card .kanban-card-meta .badge {
    font-size: 0.65rem;
    padding: 1px 6px;
}

/* === Stats cards === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

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

.stat-card .stat-icon {
    font-size: 2rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-card.stat-success .stat-icon { color: var(--success); }
.stat-card.stat-warning .stat-icon { color: var(--warning); }
.stat-card.stat-danger .stat-icon { color: var(--danger); }
.stat-card.stat-info .stat-icon { color: var(--info); }

/* === Timeline (Reporte) === */
.timeline {
    position: relative;
    padding: 16px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    display: flex;
    gap: 16px;
    padding: 8px 0;
    position: relative;
}

.timeline-dot {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
    border: 3px solid var(--primary-bg);
    z-index: 1;
    margin-top: 2px;
}

.timeline-dot.success { background: var(--success); }
.timeline-dot.warning { background: var(--warning); }
.timeline-dot.danger { background: var(--danger); }

.timeline-content { flex: 1; }
.timeline-content h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 2px; }
.timeline-content p { font-size: 0.8rem; color: var(--text-secondary); }

/* === Comments feed === */
.comments-feed {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comment-item {
    padding: 14px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.comment-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.comment-author { font-weight: 600; font-size: 0.85rem; }
.comment-date { font-size: 0.75rem; color: var(--text-secondary); }

.comment-body {
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.comment-form {
    display: flex;
    gap: 8px;
}

.comment-form .form-textarea { flex: 1; }

/* === KPI row === */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
}

.kpi-card .kpi-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 4px;
}

.kpi-card .kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.kpi-card .kpi-detail {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* === Loading spinner === */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* === Empty state === */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state i { font-size: 3rem; margin-bottom: 16px; }
.empty-state p { font-size: 1rem; }

/* === Alert banners === */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-danger { background: var(--danger-bg); color: #991B1B; border: 1px solid #FECACA; }
.alert-success { background: var(--success-bg); color: #065F46; border: 1px solid #A7F3D0; }
.alert-warning { background: var(--warning-bg); color: #92400E; border: 1px solid #FDE68A; }
.alert-info { background: var(--info-bg); color: #1E40AF; border: 1px solid #BFDBFE; }

/* === Grid utilities === */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 16px; }

/* === Utility classes === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-secondary); }
.font-bold { font-weight: 600; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.ml-2 { margin-left: 8px; }
.mr-2 { margin-right: 8px; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.w-full { width: 100%; }

/* === Animations === */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(20px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Responsive === */
@media (max-width: 1024px) {
    .kanban-board { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }

    .sidebar .logo-text,
    .sidebar .nav-text,
    .sidebar .user-details {
        opacity: 0;
        width: 0;
        overflow: hidden;
    }

    .sidebar .sidebar-footer { justify-content: center; }
    .sidebar .user-info { gap: 0; }

    .content {
        margin-left: var(--sidebar-collapsed);
        padding: 16px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-row { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

    .filters-bar {
        flex-direction: column;
        width: 100%;
    }

    .filters-bar .form-input,
    .filters-bar .form-select {
        width: 100%;
    }

    .stats-grid { grid-template-columns: 1fr 1fr; }
    .proyectos-grid { grid-template-columns: 1fr; }
    .kpi-row { grid-template-columns: 1fr 1fr; }
    .comment-form { flex-direction: column; }

    .sidebar.mobile-hidden {
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
    }

    .sidebar.mobile-shown {
        transform: translateX(0);
        width: 260px;
        box-shadow: 4px 0 20px rgba(0,0,0,0.3);
    }

    .sidebar.mobile-shown .logo-text,
    .sidebar.mobile-shown .nav-text,
    .sidebar.mobile-shown .user-details {
        opacity: 1;
        width: auto;
        overflow: visible;
    }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .kpi-row { grid-template-columns: 1fr; }
    .login-card { padding: 24px; }
    .modal-content { margin: 10px; }
}