/* Reset y fuentes mejoradas */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

:root {
    --color-primary: #006479;
    --color-secondary: #2199af;
    --color-accent: #2caac1;
    --color-light: #dff1f5;
    --color-neutral: #0b768b;
    --color-background: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--color-background) 0%, #e1f5fe 100%);
    color: var(--color-text);
    line-height: 1.6;
    padding: 1rem;
    min-height: 100vh;
    font-weight: 400;
}

/* Header mejorado */
header {
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    padding: 2rem 1rem;
    margin-bottom: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    max-width: 1200px;
    margin: 0 auto 2rem auto;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="white" opacity="0.1"><polygon points="0,0 1000,0 1000,100 0,80"/></svg>');
    background-size: cover;
}

header h1 {
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

header .subtitle {
    color: rgb(228, 228, 228);
    font-size: 1.1rem;
    font-weight: 300;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Contenedor principal mejorado */
main {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: 1.5rem;
}

/* Estilos para fieldsets mejorados */
fieldset {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

fieldset::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
}

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

fieldset:focus-within {
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(33, 153, 175, 0.1);
}

legend {
    background: var(--color-surface);
    padding: 0.5rem 1rem;
    font-weight: 600;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    margin-left: 1rem;
    box-shadow: var(--shadow-sm);
}

legend h2 {
    margin: 0;
    font-size: inherit;
    font-weight: inherit;
}

/* Formularios mejorados */
.form-group {
    margin-bottom: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--color-surface);
    color: var(--color-text);
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(33, 153, 175, 0.1);
    transform: translateY(-1px);
}

input[type="text"]:hover,
input[type="number"]:hover,
select:hover {
    border-color: var(--color-accent);
}

input::placeholder {
    color: var(--color-text-secondary);
    font-style: italic;
}

/* Botones mejorados */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
}

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

input[type="submit"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    min-width: 120px;
}

input[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
}

/* Tipografía mejorada */
h3, h4, p {
    margin-bottom: 1rem;
    color: var(--color-text);
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.result-display {
    background: linear-gradient(135deg, var(--color-light), #f0f9ff);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin: 1rem 0;
    border-left: 4px solid var(--color-secondary);
}

.result-display h3,
.result-display h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

/* Tablas mejoradas */
.table-container {
    overflow-x: auto;
    margin: 1.5rem 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

table th,
table td {
    border: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.875rem;
}

table th {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
}

table tr:nth-child(even) {
    background: #f8fafc;
}

table tr:hover {
    background: var(--color-light);
    transition: background 0.2s ease;
}

table td:first-child {
    font-weight: 500;
    color: var(--color-primary);
}

/* Utilidades */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.font-bold {
    font-weight: 600;
}

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 0.5rem;
    }
    
    main {
        gap: 1rem;
    }
    
    fieldset {
        padding: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    table th,
    table td {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1.5rem 1rem;
    }
    
    fieldset {
        padding: 0.75rem;
    }
    
    input[type="submit"] {
        width: 100%;
        padding: 1rem;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Estados de carga */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Estilos para funcionalidades mejoradas */
.botones-accion {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.botones-accion .btn {
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
    min-width: auto;
}

.progreso-container {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    margin-top: 1rem;
    backdrop-filter: blur(10px);
}

.progreso-bar {
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    height: 8px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progreso-fill {
    background: linear-gradient(90deg, #10b981, #06d6a0);
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width 0.3s ease;
}

.progreso-texto {
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

fieldset.completado {
    border-color: var(--color-success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(6, 214, 160, 0.05));
}

fieldset.completado::before {
    background: linear-gradient(to bottom, var(--color-success), #06d6a0);
}

fieldset.completado legend {
    color: var(--color-success);
}

/* Tooltips */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-text);
    color: white;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    border: 5px solid transparent;
    border-top-color: var(--color-text);
    z-index: 1000;
}

/* Estados de validación */
input:invalid {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

input:valid {
    border-color: var(--color-success);
}

/* Efectos de hover mejorados */
fieldset:hover {
    transform: translateY(-1px);
}

/* Mejoras para dispositivos táctiles */
@media (hover: none) {
    fieldset:hover {
        transform: none;
        box-shadow: var(--shadow-md);
    }
    
    input[type="submit"]:hover {
        transform: none;
    }
}

/* Estilos para notificaciones */
.notificacion {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    min-width: 300px;
    max-width: 500px;
    animation: slideIn 0.3s ease-out;
    backdrop-filter: blur(10px);
}

.notificacion-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.95), rgba(6, 214, 160, 0.95));
    color: white;
    border-left: 4px solid var(--color-success);
}

.notificacion-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(220, 38, 38, 0.95));
    color: white;
    border-left: 4px solid var(--color-error);
}

.notificacion-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.95), rgba(217, 119, 6, 0.95));
    color: white;
    border-left: 4px solid var(--color-warning);
}

.notificacion-icono {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.notificacion-mensaje {
    flex: 1;
    font-weight: 500;
    font-size: 0.9rem;
}

.notificacion-cerrar {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
    flex-shrink: 0;
}

.notificacion-cerrar:hover {
    background: rgba(255, 255, 255, 0.2);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Estilos para botones de acción mejorados */
.btn-accion {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.btn-peligro {
    background: linear-gradient(135deg, var(--color-error), #dc2626) !important;
}

.btn-peligro:hover {
    background: linear-gradient(135deg, #dc2626, var(--color-error)) !important;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

/* Botón especial para PDF */
[data-accion="exportar"] {
    background: linear-gradient(135deg, #7c3aed, #9333ea) !important;
    border: 2px solid rgba(124, 58, 237, 0.3);
}

[data-accion="exportar"]:hover {
    background: linear-gradient(135deg, #9333ea, #7c3aed) !important;
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
    border-color: rgba(124, 58, 237, 0.6);
    transform: translateY(-3px);
}


@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

/* Indicador de guardado */
.indicador-guardado {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.8;
}

.indicador-icono {
    font-size: 0.8rem;
}

.indicador-texto {
    font-weight: 400;
}

/* Menú contextual */
.menu-contextual {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    min-width: 180px;
}

.menu-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.menu-item:hover {
    background: var(--color-light);
    color: var(--color-primary);
}

.menu-item:not(:last-child) {
    border-bottom: 1px solid var(--color-border);
}

/* Efectos de carga mejorados */
.btn-accion.cargando {
    pointer-events: none;
    opacity: 0.7;
}

.btn-accion.cargando::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mejoras responsivas adicionales */
@media (max-width: 768px) {
    .notificacion {
        top: 10px;
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
    }
    
    .botones-accion {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .botones-accion .btn {
        font-size: 0.7rem;
        padding: 0.6rem;
    }
}

@media (max-width: 480px) {
    .botones-accion {
        grid-template-columns: 1fr;
    }
    
    .notificacion {
        font-size: 0.85rem;
        padding: 0.75rem 1rem;
    }
    
    .menu-contextual {
        min-width: 150px;
    }
}

/* Animaciones adicionales */
.fade-in-up {
    animation: fadeInUp 0.3s ease-out;
}

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

/* Estados de validación mejorados */
.campo-valido {
    border-color: var(--color-success) !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1) !important;
}

.campo-invalido {
    border-color: var(--color-error) !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

/* Mejoras en la accesibilidad */
.btn:focus,
.notificacion:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Tema oscuro para notificaciones en caso futuro */
@media (prefers-color-scheme: dark) {
    .notificacion {
        backdrop-filter: blur(20px);
    }
}


footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.875rem;
    margin-top: 2rem;
}

footer a {
    margin: 0.5rem 0;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    font-weight: bold;
}

footer a:hover {
    color: var(--color-primary);
}