/* Importar utilidades */
@import 'utils/variables.css';
@import 'utils/animations.css';

/* Importar componentes */
@import 'components/header.css';

/* Variables CSS */
:root {
    /* Colores principales */
    --primary-color: #1a73e8;
    --primary-light: #e8f0fe;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --warning-color: #fbbc05;
    --card-indicator-color: var(--primary-color);
    
    /* Fondo y contenedores */
    --background-color: #f0f4f8;
    --column-background: #ffffff;
    --card-hover-bg: #fafbfc;
    
    /* Texto */
    --text-color: #202124;
    --text-light: #5f6368;
    --text-white: #ffffff;
    
    /* Efectos */
    --border-radius: 8px;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    
    /* Gradientes */
    --gradient-blue: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    --gradient-green: linear-gradient(135deg, #34a853 0%, #4caf50 100%);
    --gradient-red: linear-gradient(135deg, #ea4335 0%, #ff5252 100%);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 2rem;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 100% 100%, rgba(26, 115, 232, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 0% 0%, rgba(52, 168, 83, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Tablero */
.board {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    overflow-x: auto;
    padding-bottom: 1rem;
    min-height: calc(100vh - 4rem);
}

/* Columnas */
.column {
    background: var(--column-background);
    border-radius: var(--border-radius);
    width: 300px;
    min-width: 300px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    border-top: 3px solid var(--primary-color);
    -webkit-user-select: none;
    user-select: none;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.column:nth-child(2) {
    border-top-color: var(--secondary-color);
}

.column:nth-child(3) {
    border-top-color: var(--warning-color);
}

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

.column-header {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.column-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Estilos para el color picker */
.color-picker {
    position: relative;
    margin-right: 0.75rem;
}

.color-display {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid #e8eaed;
    cursor: pointer;
    transition: var(--transition);
    background: var(--primary-color);
}

.color-display:hover {
    transform: scale(1.1);
    border-color: var(--primary-color);
}

.color-options {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--column-background);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: var(--hover-shadow);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
}

.color-picker:hover .color-options,
.color-picker:focus-within .color-options {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

.color-option {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.color-option:hover {
    transform: scale(1.2);
    border-color: #fff;
    box-shadow: var(--shadow);
}

.color-option[data-color="blue"] { background: var(--primary-color); }
.color-option[data-color="green"] { background: var(--secondary-color); }
.color-option[data-color="red"] { background: var(--accent-color); }
.color-option[data-color="yellow"] { background: var(--warning-color); }
.color-option[data-color="purple"] { background: #7c4dff; }
.color-option[data-color="teal"] { background: #009688; }
.color-option[data-color="pink"] { background: #e91e63; }
.color-option[data-color="orange"] { background: #ff5722; }

/* Eliminar estilos antiguos del select */
.column-color {
    display: none;
}

.column-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}

.column-header h2:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.column-header h2:focus {
    background-color: #fff;
    outline: 2px solid var(--secondary-color);
}

.column-actions {
    display: flex;
    gap: 0.5rem;
}

.delete-column-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-light);
    border-radius: 4px;
    transition: var(--transition);
}

.delete-column-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--accent-color);
}

/* Contenedor de tarjetas */
.cards {
    padding: 1rem;
    min-height: 50px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cards.drag-over {
    background: var(--primary-light);
    border-radius: var(--border-radius);
}

/* Tarjetas */
.card {
    background: var(--column-background);
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
    opacity: 0.5;
}

.card:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-2px);
    background: var(--card-hover-bg);
}

.card.dragging {
    opacity: 0.9;
    transform: scale(1.02);
    box-shadow: var(--hover-shadow);
    background: var(--primary-light);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-right: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    word-break: break-word;
    flex: 1;
}

.card-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.delete-card-btn {
    background: none;
    border: none;
    padding: 0.4rem;
    cursor: pointer;
    color: var(--text-light);
    border-radius: 4px;
    transition: var(--transition);
    opacity: 0;
    transform: translateX(10px);
}

.card:hover .delete-card-btn {
    opacity: 1;
    transform: translateX(0);
}

.delete-card-btn:hover {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--accent-color);
}

.card-content {
    margin-bottom: 1rem;
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: 4px;
    white-space: pre-wrap;
    word-break: break-word;
}

.card-description:empty::before {
    content: attr(data-placeholder);
    color: var(--text-light);
    opacity: 0.6;
}

.card-description:hover, .card-description:focus {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Estados de tarjeta */
.card-status {
    position: relative;
}

.card-status .tooltip {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--gradient-red);
    color: var(--text-white);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
    pointer-events: none;
    font-weight: 500;
}

.card-status:hover .tooltip {
    opacity: 1;
    transform: translateY(5px);
}

.card.overdue {
    border-color: var(--accent-color);
}

.card.overdue::before {
    background: var(--accent-color);
}

.card.overdue .card-status i {
    color: var(--accent-color);
}

/* Fechas */
.card-dates {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.date-range {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-range i {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Botones de agregar */
.add-card-btn, .add-column-btn {
    width: 100%;
    padding: 0.75rem;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.add-card-btn:hover, .add-column-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.add-card-btn:hover i, .add-column-btn:hover i {
    transform: rotate(90deg);
}

.add-column {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    width: 300px;
    min-width: 300px;
    transition: var(--transition);
}

.add-column:hover {
    background: var(--column-background);
}

/* Formularios */
.add-card-form, .add-column-form {
    padding: 1rem;
    background: var(--column-background);
    border-radius: var(--border-radius);
    box-shadow: var(--hover-shadow);
    animation: slideIn 0.3s ease;
}

/* Estilos compartidos para inputs */
.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e8eaed;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--column-background);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1);
}

.form-input::placeholder {
    color: var(--text-light);
    opacity: 0.8;
}

/* Estilos específicos para el formulario de tarjeta */
.add-card-form .card-title {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e8eaed;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--column-background);
    transition: var(--transition);
    font-weight: 500;
}

.add-card-form .card-description {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e8eaed;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-color);
    background: var(--column-background);
    transition: var(--transition);
    resize: vertical;
    min-height: 80px;
}

.add-card-form .date-inputs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.add-card-form .date-input-group {
    flex: 1;
}

.add-card-form .date-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.add-card-form .date-input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e8eaed;
    border-radius: var(--border-radius);
    margin-bottom: 0;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-color);
    background: var(--column-background);
    transition: var(--transition);
    cursor: pointer;
}

.add-card-form .date-input-group input:focus {
    cursor: text;
}

.add-column-form {
    width: 100%;
}

.add-column-form input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e8eaed;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--column-background);
    transition: var(--transition);
}

.add-column-form input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1);
}

.add-column-form input[type="text"]::placeholder {
    color: var(--text-light);
    opacity: 0.8;
}

.add-column {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    width: 300px;
    min-width: 300px;
    transition: var(--transition);
    padding: 0.5rem;
}

.add-column:hover {
    background: var(--column-background);
}

.add-column-btn {
    width: 100%;
    padding: 1rem;
    background: none;
    border: 2px dashed rgba(0, 0, 0, 0.1);
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.add-column-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.add-column-btn i {
    transition: transform 0.3s ease;
}

.add-column-btn:hover i {
    transform: rotate(90deg);
}

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

.save-btn {
    background: var(--gradient-blue);
    color: var(--text-white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.save-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--hover-shadow);
}

.cancel-btn {
    background: #f1f3f4;
    color: var(--text-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.cancel-btn:hover {
    background: #e8eaed;
}

/* Personalización de Flatpickr */
.flatpickr-calendar {
    border-radius: var(--border-radius) !important;
    box-shadow: var(--hover-shadow) !important;
    border: none !important;
}

.flatpickr-day.selected {
    background: var(--gradient-blue) !important;
    border: none !important;
}

.flatpickr-day.today {
    border-color: var(--primary-color) !important;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
    opacity: 0.8;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    opacity: 1;
}

/* Animaciones */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.card {
    animation: slideIn 0.3s ease;
}

.tooltip {
    animation: fadeIn 0.2s ease;
}

/* Estilos del modal */
.card-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: white;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.modal-header {
    padding: 1rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.close-modal-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.close-modal-btn:hover {
    background-color: #f0f0f0;
}

.modal-body {
    padding: 1rem;
}

.modal-section {
    margin-bottom: 1.5rem;
}

.modal-section h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--text-color);
}

.modal-description {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    font-family: inherit;
}

.modal-dates {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.date-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.date-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
}

.date-group input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.modal-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
}

.option-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.option-btn:hover {
    background-color: #f0f0f0;
}

.modal-footer {
    padding: 1rem;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: flex-end;
}

.save-changes-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.save-changes-btn:hover {
    background-color: var(--primary-color-dark);
}

/* Estilos responsivos */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
    }

    .modal-dates {
        grid-template-columns: 1fr;
    }
}

/* Estilos del header y logo */
.app-header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 1.5rem 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

.logo-icon {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 6px rgba(76, 175, 80, 0.2);
    transform: rotate(-10deg);
    transition: all 0.3s ease;
}

.logo-container:hover .logo-icon {
    transform: rotate(0deg) scale(1.05);
    box-shadow: 0 6px 8px rgba(76, 175, 80, 0.3);
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
    letter-spacing: -0.5px;
    position: relative;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #4CAF50 0%, transparent 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.logo-container:hover .logo-text::after {
    transform: scaleX(1);
}

/* Optimización de animaciones */
@media (prefers-reduced-motion: reduce) {
    .card,
    .column,
    .modal-content,
    .color-display,
    .add-card-btn,
    .add-column-btn {
        transition: none !important;
        animation: none !important;
        transform: none !important;
    }
}

/* Optimización de lazy loading */
.card:not(.card-visible) {
    opacity: 0;
    transform: translateY(20px);
}

.card-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
}