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

/* --- PALETA DE COLORES REVISADA "COMFORT" --- */
:root {
    /* Modo Claro "Comfort" */
    --light-bg: #eef2f9; /* Gris azulado muy suave */
    --light-header-bg: #ffffff;
    --light-column-bg: #dfe7f5; /* Tono de columna ligeramente más oscuro */
    --light-task-bg: #ffffff;
    --light-text-primary: #1a202c; /* Negro no tan puro */
    --light-text-secondary: #4a5568;
    --light-primary: #5a67d8; /* Indigo/Violeta suave */
    --light-primary-hover: #4c51bf;
    --light-border: #d2d6dc;
    --light-shadow: rgba(0, 0, 0, 0.05);

    /* Modo Oscuro (se mantiene) */
    --dark-bg: #1a202c;
    --dark-header-bg: #2d3748;
    --dark-column-bg: #4a5568;
    --dark-task-bg: #2d3748;
    --dark-text-primary: #e2e8f0;
    --dark-text-secondary: #a0aec0;
    --dark-primary: #7f9cf5;
    --dark-primary-hover: #667eea;
    --dark-border: #4a5568;
    --dark-shadow: rgba(0, 0, 0, 0.2);
    
    /* Estados (sin cambios) */
    --status-pending: #a0aec0;
    --status-in-progress: #4299e1;
    --status-stuck: #f6ad55;
    --status-done: #68d391;
    --color-danger: #f56565;
}

[data-theme="light"] {
    --color-bg: var(--light-bg); --color-header-bg: var(--light-header-bg); --color-column-bg: var(--light-column-bg); --color-task-bg: var(--light-task-bg); --color-text-primary: var(--light-text-primary); --color-text-secondary: var(--light-text-secondary); --color-primary: var(--light-primary); --color-primary-hover: var(--light-primary-hover); --color-border: var(--light-border); --color-shadow: var(--light-shadow);
}
[data-theme="dark"] {
    --color-bg: var(--dark-bg); --color-header-bg: var(--dark-header-bg); --color-column-bg: var(--dark-column-bg); --color-task-bg: var(--dark-task-bg); --color-text-primary: var(--dark-text-primary); --color-text-secondary: var(--dark-text-secondary); --color-primary: var(--dark-primary); --color-primary-hover: var(--dark-primary-hover); --color-border: var(--dark-border); --color-shadow: var(--dark-shadow);
}


* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.5;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* --- HEADER CON INTERRUPTOR --- */
.main-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background-color: var(--color-header-bg); border-bottom: 1px solid var(--color-border); flex-shrink: 0; transition: background-color 0.3s, border-color 0.3s; }
.header-left, .header-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.header-center { flex-grow: 1; text-align: center; }
#search-bar { width: 100%; max-width: 400px; padding: 8px 12px; border-radius: 6px; border: 1px solid var(--color-border); font-size: 14px; background-color: var(--color-bg); color: var(--color-text-primary); transition: background-color 0.3s, color 0.3s, border-color 0.3s; }
#search-bar:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 2px var(--color-primary-hover); }
.back-to-portal-btn { color: var(--color-primary); text-decoration: none; font-weight: 500; display: flex; align-items: center; gap: 8px; }
.main-header h1 { font-size: 20px; font-weight: 500; }
.header-btn { background-color: var(--color-primary); color: white; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 500; transition: background-color 0.2s; }
.header-btn:hover { background-color: var(--color-primary-hover); }
.secondary-btn { background-color: #a0aec0; }
.secondary-btn:hover { background-color: #718096; }

/* Interruptor de tema */
.theme-switch-wrapper { display: flex; align-items: center; gap: 8px; }
.theme-switch-wrapper i { color: var(--color-text-secondary); }
.theme-switch { position: relative; display: inline-block; width: 50px; height: 26px; }
.theme-switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 20px; width: 20px; left: 3px; bottom: 3px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: var(--color-primary); }
input:checked + .slider:before { transform: translateX(24px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }

/* Dropdown */
.dropdown { position: relative; display: inline-block; }
.dropdown-content { display: none; position: absolute; right: 0; background-color: var(--color-header-bg); min-width: 240px; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); z-index: 10; border-radius: 8px; overflow: hidden; padding: 4px 0; border: 1px solid var(--color-border); transition: background-color 0.3s, border-color 0.3s; }
.dropdown-content a { color: var(--color-text-primary); padding: 10px 16px; text-decoration: none; display: block; font-size: 14px; }
.dropdown:hover .dropdown-content { display: block; }
.dropdown-item { display: flex; justify-content: space-between; align-items: center; padding-right: 8px; transition: background-color 0.2s; }
.dropdown-item a { flex-grow: 1; padding: 10px 16px; }
.dropdown-item .dropdown-item-actions { display: none; }
.dropdown-item:hover .dropdown-item-actions { display: flex; }
.dropdown-item:hover { background-color: var(--color-bg); }
.dropdown-item.active-board { background-color: var(--color-primary); }
.dropdown-item.active-board a { color: white; }
.action-btn { background: none; border: none; color: var(--color-text-secondary); cursor: pointer; padding: 6px; border-radius: 50%; }
.action-btn:hover { background-color: var(--color-border); }
.action-btn.delete:hover { color: var(--color-danger); }
.dropdown-divider { height: 1px; background-color: var(--color-border); margin: 8px 0; }
.dropdown-header { padding: 8px 16px; font-size: 12px; font-weight: bold; color: var(--color-text-secondary); text-transform: uppercase; }
.archived-item a { padding-left: 24px !important; }
.archived-item .action-btn:hover { color: var(--status-done); }

/* Tablero y Columnas */
.board-container { display: flex; gap: 16px; padding: 24px; overflow-x: auto; flex-grow: 1; align-items: flex-start; }
.welcome-message { margin: auto; text-align: center; color: var(--color-text-secondary); }
.welcome-message h2 { font-size: 24px; margin-bottom: 8px; }
.column { background-color: var(--color-column-bg); border-radius: 8px; width: 320px; min-width: 320px; flex-shrink: 0; display: flex; flex-direction: column; max-height: 100%; transition: background-color 0.3s; }
.column-header { display: flex; justify-content: space-between; align-items: center; padding: 12px; font-weight: 500; border-bottom: 2px solid var(--color-border); transition: border-color 0.3s; }
.column-title { flex-grow: 1; cursor: pointer; }
.column-actions button { background: none; border: none; cursor: pointer; color: var(--color-text-secondary); padding: 4px; }
.column-actions button:hover { color: var(--color-text-primary); }
.tasks-container { padding: 8px; overflow-y: auto; min-height: 50px; flex-grow: 1; }
.task { background-color: var(--color-task-bg); border-radius: 8px; padding: 16px; margin-bottom: 8px; box-shadow: 0 1px 3px 0 var(--color-shadow), 0 1px 2px 0 rgba(0, 0, 0, 0.06); cursor: grab; display: flex; flex-direction: column; gap: 8px; min-height: 110px; border-left: 5px solid; transition: background-color 0.3s, box-shadow 0.3s; }
.task:hover { transform: translateY(-2px); box-shadow: 0 4px 6px -1px var(--color-shadow), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.task-header { display: flex; align-items: center; gap: 8px; }
.task-status-icon { font-size: 1.1em; width: 20px; text-align: center; }
.task-title-display { font-weight: 500; font-size: 15px; flex-grow: 1; }
.task-actions { align-self: flex-start; margin-left: auto; }
.task-actions button { background: none; border: none; cursor: pointer; color: var(--color-text-secondary); }
.task-desc-display { font-size: 13px; color: var(--color-text-secondary); word-break: break-word; }
.task-footer { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--color-text-secondary); margin-top: 8px; }
.due-date-display.overdue { color: var(--color-danger); font-weight: bold; }
.task.dragging { opacity: 0.5; transform: rotate(3deg); }
.drag-over { background-color: rgba(90, 103, 216, 0.1); border: 2px dashed var(--color-primary); }
.task.status-pending { border-left-color: var(--status-pending); }
.task.status-in-progress { border-left-color: var(--status-in-progress); }
.task.status-stuck { border-left-color: var(--status-stuck); }
.task.status-done { border-left-color: var(--status-done); }
.add-task-btn { width: calc(100% - 16px); margin: 8px; padding: 8px; background: transparent; border: none; text-align: left; color: var(--color-text-secondary); cursor: pointer; border-radius: 6px; }
.add-task-btn:hover { background-color: var(--color-border); }
#add-column-btn-wrapper { flex-shrink: 0; padding: 12px 0; }
#add-column-btn { width: 250px; padding: 12px; background-color: transparent; border: 2px dashed var(--color-border); color: var(--color-text-secondary); border-radius: 8px; cursor: pointer; }
#add-column-btn:hover { background-color: var(--color-header-bg); border-color: var(--color-primary); }

/* Modal */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0, 0, 0, 0.6); animation: fadeIn 0.3s; }
.modal-content { background-color: var(--color-header-bg); color: var(--color-text-primary); margin: 10% auto; padding: 24px; width: 90%; max-width: 600px; border-radius: 8px; position: relative; }
.close-btn { color: #aaa; position: absolute; top: 10px; right: 20px; font-size: 28px; font-weight: bold; cursor: pointer; }
.modal-content label { display: block; margin-bottom: 8px; font-weight: 500; }
.modal-content input, .modal-content textarea, .modal-content select { background-color: var(--color-bg); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.modal-content input[type="text"], .modal-content textarea, .modal-content select, .modal-content input[type="date"] { width: 100%; padding: 10px; margin-bottom: 16px; border-radius: 6px; font-size: 14px; }
.modal-content textarea { min-height: 120px; resize: vertical; }
.modal-row { display: flex; gap: 16px; }
.modal-col { flex: 1; }
.modal-btn { background-color: var(--color-primary); color: white; padding: 12px 20px; border: none; border-radius: 6px; cursor: pointer; width: 100%; font-size: 16px; }
@keyframes fadeIn { from {opacity: 0;} to {opacity: 1;} }