/* Variables */
:root {
    --color-primario: #2563eb;
    --color-secundario: #059669;
    --color-error: #dc2626;
    --color-advertencia: #d97706;
    --color-info: #0891b2;
    --color-fondo: #f8fafc;
    --color-superficie: #ffffff;
    --color-texto: #1e293b;
    --color-texto-secundario: #64748b;
    --color-borde: #e2e8f0;
    --sombra: 0 1px 3px rgba(0,0,0,0.1);
    --radio-borde: 8px;
    --transicion: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--color-fondo);
    color: var(--color-texto);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navegación */
.navbar {
    background: var(--color-superficie);
    border-bottom: 1px solid var(--color-borde);
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--sombra);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primario);
    text-decoration: none;
}

.navbar-links {
    display: flex;
    gap: 0.5rem;
}

.navbar-links a {
    color: var(--color-texto-secundario);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radio-borde);
    transition: var(--transicion);
    font-weight: 500;
}

.navbar-links a:hover,
.navbar-links a.active {
    color: var(--color-primario);
    background: #eff6ff;
}

/* Contenedor principal */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Tarjetas */
.card {
    background: var(--color-superficie);
    border-radius: var(--radio-borde);
    box-shadow: var(--sombra);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-borde);
}

.card-header {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-borde);
}

/* Grid */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

/* Formularios */
.form-group {
    margin-bottom: 1rem;
}

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

.form-control {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde);
    font-size: 0.875rem;
    transition: var(--transicion);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radio-borde);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
    text-decoration: none;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primario {
    background: var(--color-primario);
    color: white;
}
.btn-primario:hover:not(:disabled) {
    background: #1d4ed8;
}

.btn-exito {
    background: var(--color-secundario);
    color: white;
}
.btn-exito:hover:not(:disabled) {
    background: #047857;
}

.btn-error {
    background: var(--color-error);
    color: white;
}
.btn-error:hover:not(:disabled) {
    background: #b91c1c;
}

.btn-advertencia {
    background: var(--color-advertencia);
    color: white;
}
.btn-advertencia:hover:not(:disabled) {
    background: #b45309;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-borde);
    color: var(--color-texto);
}
.btn-outline:hover:not(:disabled) {
    background: var(--color-fondo);
}

/* Upload Zone */
.zona-subida {
    border: 2px dashed var(--color-borde);
    border-radius: var(--radio-borde);
    padding: 2.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transicion);
    background: var(--color-fondo);
}

.zona-subida:hover {
    border-color: var(--color-primario);
    background: #eff6ff;
}

.zona-subida.activo {
    border-color: var(--color-secundario);
    background: #ecfdf5;
}

/* Progreso */
.progreso-container {
    margin: 1.5rem 0;
}

.barra-progreso {
    width: 100%;
    height: 1.5rem;
    background: var(--color-borde);
    border-radius: 0.75rem;
    overflow: hidden;
}

.barra-progreso-relleno {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primario), var(--color-secundario));
    transition: width 0.5s ease;
    border-radius: 0.75rem;
}

/* Métricas */
.metricas-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.metrica-card {
    text-align: center;
    padding: 1rem;
    border-radius: var(--radio-borde);
    background: var(--color-fondo);
}

.metrica-valor {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.metrica-etiqueta {
    font-size: 0.75rem;
    color: var(--color-texto-secundario);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metrica-exito .metrica-valor { color: var(--color-secundario); }
.metrica-error .metrica-valor { color: var(--color-error); }
.metrica-info .metrica-valor { color: var(--color-info); }
.metrica-advertencia .metrica-valor { color: var(--color-advertencia); }

/* Logs */
.log-container {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--radio-borde);
    height: 250px;
    overflow-y: auto;
    font-family: 'Cascadia Code', 'Consolas', monospace;
    font-size: 0.8125rem;
}

.log-item {
    padding: 0.25rem 0;
    border-bottom: 1px solid #334155;
}

.log-item.error { color: #fca5a5; }
.log-item.success { color: #86efac; }
.log-item.warning { color: #fde047; }
.log-item.info { color: #93c5fd; }

/* Tabla */
.tabla {
    width: 100%;
    border-collapse: collapse;
}

.tabla th {
    background: var(--color-fondo);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-texto-secundario);
    border-bottom: 2px solid var(--color-borde);
}

.tabla td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-borde);
}

.tabla tr:hover {
    background: var(--color-fondo);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-exito { background: #ecfdf5; color: #065f46; }
.badge-error { background: #fef2f2; color: #991b1b; }
.badge-info { background: #eff6ff; color: #1e40af; }
.badge-pendiente { background: #fffbeb; color: #92400e; }

/* Utilidades */
.text-center { text-align: center; }
.text-error { color: var(--color-error); }
.text-exito { color: var(--color-secundario); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

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

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

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

.spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--color-borde);
    border-top-color: var(--color-primario);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .metricas-grid { grid-template-columns: repeat(2, 1fr); }
    .navbar-links { display: none; }
}