/* Importar fuente elegante */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Reset y variables CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Paleta principal celeste/azul moderna - OSCURECIDA */
    --primary-color: #0369a1;
    --primary-dark: #075985;
    --primary-light: #075985;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --background-color: #f0f9ff;
    --card-background: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(3, 105, 161, 0.1), 0 2px 4px -1px rgba(3, 105, 161, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(3, 105, 161, 0.1), 0 10px 10px -5px rgba(3, 105, 161, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(3, 105, 161, 0.25);
    --gradient-primary: linear-gradient(135deg, #0369a1 0%, #075985 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    
    /* Variables para el tema celeste/azul moderno - OSCURECIDAS */
    --login-bg-primary: linear-gradient(135deg, #0369a1 0%, #075985 50%, #0c4a6e 100%);
    --login-bg-secondary: #075985;
    --login-card-bg: rgba(255, 255, 255, 0.95);
    --login-text-primary: #0f172a;
    --login-text-secondary: #475569;
    --login-accent: #0369a1;
    
    /* Nuevos colores celeste/azul - OSCURECIDOS */
    --sky-50: #f0f9ff;
    --sky-100: #e0f2fe;
    --sky-200: #bae6fd;
    --sky-300: #7dd3fc;
    --sky-400: #075985;
    --sky-500: #0369a1;
    --sky-600: #075985;
    --sky-700: #0c4a6e;
    --sky-800: #0f172a;
    --sky-900: #0c4a6e;
}

/* Botones con colores sólidos */
.btn-warning {
    background: var(--warning-color);
}

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

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

.btn-success:hover {
    background: #059669;
}

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

.btn-dark {
    background: #374151;
}

.btn-dark:hover {
    background: #4b5563;
}

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

.btn-primary-light {
    background: #5a67d8;
}

.btn-purple {
    background: #8b5cf6;
}

.btn-purple:hover {
    background: #7c3aed;
}

.btn-orange {
    background: var(--warning-color);
}

.btn-orange:hover {
    background: #d97706;
}

.form-submit {
    background: var(--primary-color);
}

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

.primary-gradient {
    background: var(--primary-color);
}

.secondary-gradient {
    background: #5a67d8;
}

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

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

.success-gradient {
    background: var(--success-color);
}

/* Efectos y overlays */
.card::before {
    background: rgba(255,255,255,0.1);
}

.shimmer::before {
    background: rgba(255,255,255,0.2);
}

.modal-backdrop {
    background: rgba(255,255,255,0.95);
}

.status-badge.warning {
    background: var(--warning-color);
}

.card-overlay {
    background: rgba(255,255,255,0.95);
}

.info-bg {
    background: rgba(240, 249, 255, 0.8);
}

.white-overlay {
    background: rgba(255, 255, 255, 0.98);
}

.light-bg {
    background: #f1f5f9;
}

.shimmer-effect::before {
    background: rgba(255, 255, 255, 0.2);
}

.orange-shimmer::before {
    background: rgba(255, 255, 255, 0.2);
}

.light-card {
    background: #f8fafc;
}

.animated-bg {
    background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
}

.card-bg {
    background: #f8fafc;
}

.light-gradient {
    background: rgba(102, 126, 234, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background-color);
    background-image: linear-gradient(135deg, var(--sky-50) 0%, var(--sky-100) 50%, var(--sky-200) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* Animaciones globales */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Estilos del Asistente IA */
.ai-assistant {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    margin: 2rem 1.5rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}

.ai-assistant:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.ai-header {
    background: var(--primary-color);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ai-header:hover {
    background: var(--primary-color);
}

.ai-header i.fa-robot {
    font-size: 1.25rem;
    color: white;
}

.ai-header h3 {
    color: white;
    margin: 0;
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
}

.toggle-ai-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.toggle-ai-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.toggle-ai-btn.collapsed i {
    transform: rotate(-90deg);
}

.ai-content {
    padding: 1.5rem 1.5rem 2rem 1.5rem;
    max-height: none;
    overflow: visible;
    transition: all 0.3s ease;
}

.ai-content.collapsed {
    max-height: 0;
    padding: 0 1.5rem;
}

.ai-message {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 0.95rem;
    position: relative;
    overflow: visible;
}

.ai-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.ai-message i.fa-spinner {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.ai-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.ai-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

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

.ai-btn.secondary {
    background: var(--warning-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.ai-btn.secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.ai-btn i {
    font-size: 0.9rem;
}

/* Animación para el contenido del asistente */
@keyframes aiPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.ai-message.loading {
    animation: aiPulse 1.5s ease-in-out infinite;
}

.kanban-column:nth-child(1) {
    animation: fadeInLeft 0.6s ease forwards;
}

.kanban-column:nth-child(2) {
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.kanban-column:nth-child(3) {
    animation: fadeInRight 0.6s ease 0.2s forwards;
    opacity: 0;
}

/* Pantalla de Login */
.login-container {
    min-height: 100vh;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    background: linear-gradient(135deg, var(--login-bg-primary) 0%, var(--login-bg-secondary) 100%);
    padding: 0;
    position: relative;
    overflow: hidden;
}

.login-background {
    position: absolute;
    top: 0;
    left: 0;
    width: calc(100% - 450px);
    height: 100%;
    background: linear-gradient(135deg, var(--login-bg-primary) 0%, var(--login-bg-secondary) 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
}

.login-background::after {
    content: 'Zk';
    position: absolute;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 12rem;
    font-weight: 100;
    color: rgba(0, 0, 0, 0.4);
    letter-spacing: -0.08em;
    text-transform: lowercase;
    user-select: none;
    pointer-events: none;
    z-index: 1;
    animation: logoFloat 6s ease-in-out infinite;
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

@keyframes logoFloat {
    0%, 100% { 
        transform: translateY(0px) scale(1);
        opacity: 0.4;
    }
    50% { 
        transform: translateY(-10px) scale(1.02);
        opacity: 0.6;
    }
}

.login-background::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
    z-index: 1;
}



@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.login-card {
    background: var(--login-card-bg);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 0;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    width: 450px;
    height: 100vh;
    border: none;
    border-left: 1px solid rgba(107, 114, 128, 0.3);
    position: relative;
    z-index: 1;
    transform: translateY(0);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-card:hover {
    transform: translateX(-5px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: var(--login-text-primary);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.login-header p {
    color: var(--login-text-secondary);
    font-size: 0.9rem;
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--login-text-primary);
}

.login-form input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
    background: #ffffff;
    color: var(--login-text-primary);
}

.login-form input:focus {
    outline: none;
    border-color: var(--login-accent);
    box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.1);
}

.login-btn {
    width: 100%;
    padding: 0.875rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(3, 105, 161, 0.3);
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-btn:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--sky-600) 0%, var(--sky-700) 100%);
    box-shadow: 0 8px 25px rgba(3, 105, 161, 0.4);
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn:active {
    transform: translateY(0);
}

.error-message {
    background: #fef2f2;
    color: var(--danger-color);
    padding: 0.75rem;
    border-radius: 8px;
    margin-top: 1rem;
    border: 1px solid #fecaca;
}

/* Pantalla Principal */
.kanban-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header moderno y elegante */
.header {
    background: var(--primary-color);
    backdrop-filter: blur(20px);
    padding: 1.5rem 2.5rem;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 80px;
}

.header h1 {
    font-family: 'Inter', sans-serif;
    color: white;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header h1 i {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.6rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.admin-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-btn:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.admin-btn i {
    font-size: 1rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-info {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.logout-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logout-btn:hover {
    transform: translateY(-2px);
    background: rgba(220, 38, 38, 1);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3);
}

/* Controles modernos */
.controls {
    padding: 2rem 2.5rem;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

/* Grupo de botones */
.buttons-group {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap; /* Permite que los botones se envuelvan en móviles */
}

/* Contenedor de filtros a la derecha */
.filters {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-left: auto;
    flex-wrap: wrap;
}

/* Remover estilos anteriores de botones individuales */
.controls > button {
    margin-right: 0;
}

.add-task-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    padding: 1rem 2rem 1rem 3rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(3, 105, 161, 0.3);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-height: 44px;
    touch-action: manipulation;
    box-sizing: border-box;
}

.add-task-btn::before {
    content: '+';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    font-weight: bold;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.2);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.add-task-btn:hover {
    opacity: 0.85;
}

.add-task-btn:hover::before {
    transform: translateY(-50%) rotate(180deg) scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.filters select {
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: white;
}

/* Tablero Kanban con scroll en columnas - Optimizado para responsive */
.kanban-board {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 columnas de igual ancho */
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    overflow-x: auto;
    height: calc(100vh - 140px); /* Altura más grande para listas más largas */
    scroll-snap-type: x mandatory; /* Mejora la experiencia de scroll en móviles */
}

.kanban-column {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: 100%; /* Altura completa del contenedor */
    max-height: calc(100vh - 160px); /* Altura máxima más grande */
    min-width: 280px; /* Ancho mínimo para mantener consistencia */
    scroll-snap-align: start; /* Mejora la experiencia de scroll */
}

.kanban-column:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.column-header {
    padding: 1.25rem 1.5rem;
    border-bottom: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 16px 16px 0 0;
    position: relative;
    flex-shrink: 0; /* No se encoge */
}

.kanban-column:nth-child(1) .column-header {
    background: #fbbf24;
    color: #92400e;
}

.kanban-column:nth-child(2) .column-header {
    background: #3b82f6;
    color: white;
}

.kanban-column:nth-child(3) .column-header {
    background: var(--success-color);
    color: white;
}

.kanban-column:nth-child(4) .column-header {
    background: #f97316;
    color: white;
}

.column-header h3 {
    font-size: 1.1rem;
    color: inherit; /* Usa el color del padre para mejor contraste */
    font-weight: 600;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-count {
    background: rgba(255, 255, 255, 0.2);
    color: inherit;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 24px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.task-list {
    flex: 1; /* Toma todo el espacio disponible */
    padding: 1rem;
    overflow-y: auto; /* Scroll vertical cuando sea necesario */
    overflow-x: hidden;
    /* Estilos personalizados para el scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* Estilos del scrollbar para WebKit (Chrome, Safari, Edge) */
.task-list::-webkit-scrollbar {
    width: 6px;
}

.task-list::-webkit-scrollbar-track {
    background: transparent;
}

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

.task-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Tarjetas de Tarea */
.task-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(226, 232, 240, 0.3);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    cursor: grab;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

.task-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.task-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: rgba(99, 102, 241, 0.3);
}

.task-card:hover::before {
    opacity: 1;
}

.task-card.dragging {
    opacity: 0.7;
    transform: rotate(3deg) scale(1.05);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    z-index: 1000;
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    gap: 0.5rem;
}

.task-title {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.4;
    letter-spacing: -0.01em;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    margin: 0;
}

.task-priority {
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}

.priority-high {
    background: #fef2f2;
    color: var(--danger-color);
}

.priority-medium {
    background: #fef3c7;
    color: var(--warning-color);
}

.priority-low {
    background: #f0f9ff;
    color: var(--primary-color);
}

.task-description {
    font-family: 'Inter', sans-serif;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    letter-spacing: -0.005em;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.task-meta {
    font-family: 'Inter', sans-serif;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: -0.005em;
}

.task-meta div {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.task-last-modified {
    font-size: 0.8rem !important;
    color: var(--text-muted) !important;
    font-style: italic;
}

.task-project {
    background: var(--primary-color);
    color: white !important;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.task-assignee {
    background: var(--background-color);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-weight: 500;
}

.task-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.task-actions button {
    padding: 0.375rem 0.75rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.edit-btn {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

.edit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(99, 102, 241, 0.4);
}

.delete-btn {
    background: var(--danger-color);
    color: white;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}

.delete-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.4);
    color: #991b1b;
}

/* Drag and Drop */
.task-list.drag-over {
    background: rgba(240, 249, 255, 0.8);
    border: 2px dashed var(--primary-color);
    border-radius: 12px;
    backdrop-filter: blur(5px);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    animation: fadeIn 0.3s ease;
    overflow-y: auto; /* Permite scroll en modales altos */
}

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

.modal-content {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    border-radius: 24px;
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(102, 126, 234, 0.1);
    animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    padding: 2rem;
    margin: auto; /* Centra verticalmente en móviles */
    position: relative;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 0 0 1.5rem 0;
    border-bottom: 2px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    z-index: 1;
}

.modal-header h3 {
    color: #1e293b;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    text-align: center;
    flex: 1;
    line-height: 1.3;
}

.close-btn {
    background: #f1f5f9;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1.2rem;
    cursor: pointer;
    color: #64748b;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    touch-action: manipulation; /* Mejora la experiencia táctil */
    transition: all 0.3s ease;
    font-weight: 600;
}

.close-btn:hover {
    background: var(--danger-color);
    color: white;
    border-color: #ef4444;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

#taskForm, #meetForm {
    padding: 0;
}

.form-group {
    margin-bottom: 1.25rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: #1e293b;
    font-size: 0.95rem;
    letter-spacing: 0.025em;
    line-height: 1.4;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    background: rgba(248, 250, 252, 0.8);
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    min-height: 44px; /* Tamaño mínimo táctil */
    touch-action: manipulation;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0369a1;
    background: white;
    box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.1), 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

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

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 2px solid #f1f5f9;
    position: sticky;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
}

.cancel-btn {
    padding: 1rem 2rem;
    background: #374151;
    color: white;
    border: 2px solid #374151;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(55, 65, 81, 0.3);
}

.cancel-btn:hover {
    background: #4b5563;
    border-color: #4b5563;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(55, 65, 81, 0.4);
}

.save-btn {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    border: 2px solid #667eea;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    min-width: 120px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.save-btn:hover {
    background: #5a67d8;
    border-color: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.loading-spinner {
    text-align: center;
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.loading-spinner img {
    width: 80px;
    height: 80px;
    animation: logoAnimation 2s ease-in-out infinite;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

.loading-spinner p {
    margin: 0;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

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

@keyframes logoAnimation {
    0% { 
        transform: scale(1) rotate(0deg);
        filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
    }
    25% { 
        transform: scale(1.1) rotate(5deg);
        filter: drop-shadow(0 6px 12px rgba(102, 126, 234, 0.4));
    }
    50% { 
        transform: scale(1.2) rotate(0deg);
        filter: drop-shadow(0 8px 16px rgba(102, 126, 234, 0.5));
    }
    75% { 
        transform: scale(1.1) rotate(-5deg);
        filter: drop-shadow(0 6px 12px rgba(102, 126, 234, 0.4));
    }
    100% { 
        transform: scale(1) rotate(0deg);
        filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
    }
}

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

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

/* Estilos modernos para Meets */
.create-meet-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    padding: 1rem 1.75rem;
    border-radius: 16px;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(3, 105, 161, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.create-meet-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s ease;
}

.create-meet-btn:hover {
    opacity: 0.85;
}

.create-meet-btn:hover::before {
    left: 100%;
}

/* Estilos modernos para el botón de gestionar proyectos */
.manage-projects-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    padding: 1rem 1.75rem;
    border-radius: 16px;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(3, 105, 161, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.manage-projects-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s ease;
}

.manage-projects-btn:hover {
    opacity: 0.85;
}

.manage-projects-btn:hover::before {
    left: 100%;
}

.meets-section {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin: 2rem 1.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.meets-header {
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.meets-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.toggle-meets-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.toggle-meets-btn.collapsed {
    transform: rotate(-90deg);
}

.meets-content {
    padding: 1.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.meets-content.collapsed {
    display: none;
}

.meets-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.meet-card {
    background: var(--gradient-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: all 0.3s ease;
}

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

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

.meet-title {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    font-size: 1rem;
}

.meet-creator {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: var(--bg-light);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.meet-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.meet-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.meet-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.join-meet-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.delete-meet-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.delete-meet-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.loading-meets {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

.no-meets {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    font-style: italic;
}

/* Estilos mejorados para selector de participantes */
.participants-select {
    min-height: 140px;
    max-height: 200px;
    padding: 12px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 14px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    overflow-y: auto;
}

/* Estilos específicos para select múltiple de asignados */
.form-group select[multiple] {
    min-height: 120px;
    max-height: 200px;
    padding: 0.5rem;
    background: rgba(255,255,255,0.95);
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
    position: relative;
}

.form-group select[multiple]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 12px 12px 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.form-group select[multiple]::-webkit-scrollbar {
    width: 6px;
}

.form-group select[multiple]::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}

.form-group select[multiple]::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.form-group select[multiple]::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.form-group select[multiple]:focus {
    border-color: #0369a1;
    background: white;
    box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.15), 0 4px 16px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

.form-group select[multiple]:focus::before {
    opacity: 1;
}

.form-group select[multiple] option {
    padding: 0.75rem 1rem;
    margin: 0.25rem 0.5rem;
    border-radius: 8px;
    background: white;
    color: #374151;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    position: relative;
    cursor: pointer;
}

.form-group select[multiple] option::before {
    content: '👤';
    margin-right: 0.5rem;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.form-group select[multiple] option:hover {
    background: #f8fafc;
    color: #1e293b;
    border-color: #cbd5e1;
    transform: translateX(3px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form-group select[multiple] option:hover::before {
    opacity: 1;
}

.form-group select[multiple] option:checked {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    border-color: #0369a1;
    box-shadow: 0 2px 8px rgba(3, 105, 161, 0.4);
    transform: translateX(2px);
}

.form-group select[multiple] option:checked::before {
    content: '✓';
    opacity: 1;
    font-weight: bold;
}

.form-group select[multiple] option:checked:hover {
    background: #5a67d8;
    transform: translateX(2px);
}

/* Texto de ayuda mejorado para select múltiple */
.form-help {
    font-size: 0.85rem;
    color: #64748b;
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 8px;
    border-left: 3px solid #667eea;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-help::before {
    content: "💡";
    font-size: 1rem;
}

/* Animación para el label del select múltiple */
.form-group label[for="taskAssignees"] {
    color: var(--primary-color);
    font-weight: 600;
    position: relative;
}

.form-group label[for="taskAssignees"]::after {
    content: "👥";
    margin-left: 0.5rem;
    -webkit-text-fill-color: initial;
}

/* Efecto hover para el contenedor del select múltiple */
.form-group:has(select[multiple]):hover {
    transform: translateY(-1px);
}

.form-group:has(select[multiple]) {
    transition: transform 0.2s ease;
}

.participants-select:focus {
    outline: none;
    border-color: #0369a1;
    box-shadow: 0 0 0 4px rgba(3, 105, 161, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    background: white;
}

.participants-select option {
    padding: 12px 16px;
    margin: 4px 0;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    background: white;
    border: 1px solid transparent;
}

.participants-select option:hover {
    background: #f0f9ff;
    border-color: #0369a1;
}

.participants-select option:checked {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

.form-help {
    display: block;
    margin-top: 8px;
    padding: 8px 12px;
    font-size: 13px;
    color: #64748b;
    background: #f1f5f9;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    font-style: normal;
    line-height: 1.4;
}

/* Mejoras adicionales para el modal de meet */
.modal h2 {
    color: #1e293b;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #e2e8f0;
}

.form-group label {
    font-weight: 600;
    color: #374151;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.form-group input[type="text"],
.form-group input[type="datetime-local"] {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.form-group input[type="text"]:focus,
.form-group input[type="datetime-local"]:focus {
    border-color: #0369a1;
    outline: none;
    box-shadow: 0 0 0 4px rgba(3, 105, 161, 0.1);
}

.modal-actions {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.cancel-btn {
    background: #64748b;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cancel-btn:hover {
    background: #475569;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
}

.save-btn {
    background: var(--success-color);
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.save-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Estilos para Modal de Proyectos */
.projects-modal {
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
}

.project-form-section {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.project-form-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.projects-list-section {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.projects-list-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.project-item {
    background: var(--background-color);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.project-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.project-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
}

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

.project-actions button {
    padding: 0.25rem 0.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

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

.edit-project-btn:hover {
    background: var(--primary-dark);
}

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

.delete-project-btn:hover {
    background: #dc2626;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.project-users {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.project-user-tag {
    background: var(--primary-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.users-select {
    min-height: 100px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
}

.users-select option {
    padding: 0.5rem;
    margin: 0.2rem 0;
}

.users-select option:checked {
    background: var(--primary-color);
    color: white;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}



.loading-projects {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.loading-projects i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.no-projects {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

.error-message {
    text-align: center;
    padding: 1rem;
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.success-message {
    text-align: center;
    padding: 1rem;
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Responsive Design - Mejorado */
@media (max-width: 1024px) {
    .header {
        padding: 1rem 1.5rem;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .controls {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        min-height: auto;
    }
    
    .header h1 {
        font-size: 1.25rem;
        justify-content: center;
    }
    
    .header-left {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    .admin-btn, .logout-btn {
        width: 100%;
        max-width: 200px;
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }
    
    .kanban-board {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    
    .kanban-column {
        min-height: auto;
        max-height: 400px;
    }
    
    .controls {
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .controls .btn {
        width: 100%;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .modal {
        padding: 10px;
        margin: 10px;
    }
    
    .modal-content {
        width: calc(100% - 20px);
        max-width: none;
        margin: 0;
        border-radius: 12px;
    }
    
    .task-card {
        margin-bottom: 0.75rem;
    }
    
    .task-card h4 {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .task-card p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.75rem;
    }
    
    .header h1 {
        font-size: 1.1rem;
        gap: 0.5rem;
    }
    
    .header h1 i {
        font-size: 1.2rem;
        padding: 0.4rem;
    }
    
    .login-card {
        padding: 1.5rem;
        width: 100%;
        height: auto;
        min-height: 100vh;
    }
    
    .login-background {
        width: 100%;
        position: relative;
        height: 200px;
    }
    
    .login-container {
        flex-direction: column;
    }
    
    .task-card {
        padding: 0.75rem;
    }
    
    .modal-content {
        margin: 5px;
        padding: 1rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* Previene zoom en iOS */
    }
    
    .btn {
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
        min-height: 44px; /* Tamaño mínimo táctil */
    }
    
    .kanban-column {
        max-height: 300px;
    }
    
    .column-header h3 {
        font-size: 0.95rem;
    }
    
    .task-count {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
}

@media (max-width: 360px) {
    .header {
        padding: 0.5rem;
    }
    
    .header h1 {
        font-size: 1rem;
    }
    
    .controls {
        padding: 0.75rem;
    }
    
    .kanban-board {
        padding: 0.75rem;
        gap: 0.75rem;
    }
    
    .task-card {
        padding: 0.5rem;
    }
    
    .modal-content {
        padding: 0.75rem;
    }
}

/* Mejoras adicionales de UI moderna */
.login-card {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn, .login-btn, .btn-primary {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn::before, .login-btn::before, .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before, .login-btn:hover::before, .btn-primary:hover::before {
    left: 100%;
}

/* Mejoras para dispositivos táctiles */
@media (hover: none) and (pointer: coarse) {
    .btn, .login-btn, .nav-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .form-group input, .form-group select {
        min-height: 44px;
        font-size: 16px; /* Previene zoom en iOS */
    }
}

/* Mejoras para pantallas muy pequeñas */
@media (max-width: 320px) {
    .login-container {
        padding: 1rem 0.5rem;
    }
    
    .login-card {
        padding: 1rem;
        margin: 0 0.5rem;
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
}

/* Animaciones suaves para elementos interactivos */
.form-group input, .form-group select, .form-group textarea {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    transform: translateY(-2px);
}

/* Mejoras de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}