/*
 * Hoja de estilos principal del proyecto (frontend)
 *
 * - Define variables de color y estilos base.
 * - Mejora visual para Login y Dashboard (tarjetas, botones, sombras, transiciones).
 * - Utilidades para badges de color de tareas y elementos interactivos.
 *
 * Nota: Solo documentación; no altera reglas existentes.
 */
:root {
    --primary: #0d6efd;
    --success: #198754;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #0dcaf0;
    --light: #f8f9fa;
    --dark: #212529;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Login Page */
.card {
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

/* Dashboard */
.navbar-dark {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.card {
    transition: all 0.3s ease;
    border-radius: 10px;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Color Picker */
.color-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.color-option input[type="radio"] {
    cursor: pointer;
}

.color-option:hover {
    border-color: var(--primary);
    background-color: rgba(13, 110, 253, 0.05);
}

.color-option input[type="radio"]:checked {
    accent-color: var(--primary);
}

.color-option input[type="radio"]:checked + .color-badge {
    transform: scale(1.2);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.color-badge {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-block;
    border: 2px solid #fff;
    transition: all 0.3s ease;
}

/* Task Color Badges */
.color-red { background-color: #dc3545; }
.color-blue { background-color: #0d6efd; }
.color-green { background-color: #198754; }
.color-yellow { background-color: #ffc107; }
.color-purple { background-color: #0dcaf0; }
.color-orange { background-color: #fd7e14; }

.color-badge-small {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-right: 8px;
}

/* Table Styles */
.table {
    margin-bottom: 0;
}

.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

.table td {
    vertical-align: middle;
    border-bottom: 1px solid #e9ecef;
}

.table thead th {
    border-bottom: 2px solid #e9ecef;
    font-weight: 600;
    color: #495057;
}

/* Action Buttons */
.btn-action {
    padding: 6px 12px;
    font-size: 0.875rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

/* Badge Styles */
.badge {
    padding: 8px 12px;
    font-size: 0.85rem;
    border-radius: 20px;
}

.badge-completed {
    background-color: #d4edda;
    color: #155724;
}

.badge-pending {
    background-color: #fff3cd;
    color: #856404;
}

/* Alert */
.alert {
    border-radius: 10px;
    border: none;
    animation: slideDown 0.3s ease;
}

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

/* Loading Spinner */
.spinner-border {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Empty State */
#emptyState {
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Modal */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* Chat panel */
.chat-panel .chat-messages {
    max-height: 50vh;
}
.chat-panel .input-group {
    background: #fff;
}

/* Responsive tweaks */
/* Descripción de tarea: clamp y expansión */
.task-main { min-width: 0; }
.task-desc {
    margin-top: 2px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3; /* desktop default */
    line-clamp: 3;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
}
.task-desc.expanded {
    display: block;
    -webkit-line-clamp: unset;
    line-clamp: unset;
    max-height: none;
    white-space: pre-wrap;
}

/* Forzar que el panel de chat no afecte el ancho de la tabla */
.chat-panel { width: 100%; }
.chat-panel .chat-messages { width: 100%; }

@media (max-width: 576px) {
    .badge { font-size: 0.75rem; padding: 6px 10px; }
    .btn-sm { padding: 8px 12px; font-size: 0.9rem; }
    .table td, .table th { padding: 0.75rem; }
    .chat-panel .chat-messages { max-height: 40vh; }
    .chat-panel { padding-bottom: env(safe-area-inset-bottom); }
    .chat-panel .input-group { position: sticky; bottom: 0; z-index: 2; }
    .navbar .btn { padding: .375rem .5rem; }

    /* Mostrar más líneas de descripción en móviles */
    .task-desc { -webkit-line-clamp: 5; line-clamp: 5; }

    /* Evitar desbordes y estrechamiento anómalo en móviles */
    .table { table-layout: auto; width: 100%; }
    .table td, .table th { white-space: normal; word-break: break-word; overflow-wrap: anywhere; }

    /* Ignorar anchos fijos de los TH definidos inline en XS */
    #tasksContainer table thead th { width: auto !important; }

    .actions-cell .d-flex { flex-direction: column; gap: .5rem; }
    .actions-cell .btn { width: 100%; }
}

@media (max-width: 768px) {
    .actions-cell .d-flex { flex-wrap: wrap; }
}

.modal-header {
    border-radius: 15px 15px 0 0;
}

/* Responsive */
@media (max-width: 768px) {
    .color-option {
        flex: 1 1 calc(50% - 8px);
    }

    .table {
        font-size: 0.875rem;
    }

    .btn-action {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
}