/* ========================================
   RESET Y BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales - Paleta minimalista */
    --color-primary: #1a1a1a;
    --color-secondary: #4a4a4a;
    --color-accent: #d4af37;
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f8f8;
    --color-bg-tertiary: #f0f0f0;
    --color-text: #1a1a1a;
    --color-text-secondary: #6a6a6a;
    --color-border: #e0e0e0;
    --color-success: #2d7a4f;
    --color-error: #c33c3c;
    --color-warning: #d68910;

    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-secondary: 'Georgia', 'Times New Roman', serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.08);

    /* Bordes */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.logo .accent {
    color: var(--color-accent);
    font-weight: 300;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--color-text);
}

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.75rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-accent);
}

/* ========================================
   CONTAINER Y LAYOUT
   ======================================== */
.container {
    width: 100%;
    padding-left: 8%;
    padding-right: 8%;
    box-sizing: border-box;
    /* 🎯 ESENCIAL */
}


.main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-2xl) 0;
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-base);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.01em;
}

.input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.05);
}

.input::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.6;
}

.input-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.help-text {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.radio-group {
    display: flex;
    gap: var(--spacing-lg);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.9375rem;
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: var(--font-primary);
    letter-spacing: 0.01em;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-tertiary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: var(--radius-sm);
}

.btn-icon:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
}

.btn-delete:hover {
    background-color: #fef2f2;
    color: var(--color-error);
}

/* ========================================
   TABLES
   ======================================== */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.table thead {
    background-color: var(--color-bg-secondary);
}

.table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border);
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

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

.table tbody tr:hover {
    background-color: var(--color-bg-secondary);
}

.table-scroll {
    max-height: 400px;
    overflow-y: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.table-preview {
    font-size: 0.875rem;
}

.table-preview th,
.table-preview td {
    padding: 0.625rem;
}

/* ========================================
   STATS GRID
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 2rem;
    font-weight: 300;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

/* ========================================
   ACTIONS BAR
   ======================================== */
.actions-bar {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

/* ========================================
   UPLOAD AREA
   ======================================== */
.upload-area {
    padding: var(--spacing-xl);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.upload-options {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.divider-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ========================================
   RESULTS
   ======================================== */
.result-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.result-section:last-child {
    border-bottom: none;
}

.result-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.result-box {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
}

.result-table {
    width: 100%;
    margin: var(--spacing-md) 0;
}

.result-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.result-table td:first-child {
    font-weight: 500;
    color: var(--color-text-secondary);
}

.discussion-box {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    line-height: 1.8;
    font-size: 0.9375rem;
}

.highlight {
    background-color: #fff9e6;
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.decision-accept {
    color: var(--color-success);
    font-weight: 600;
}

.decision-reject {
    color: var(--color-error);
    font-weight: 600;
}

/* ========================================
   HELP SECTION
   ======================================== */
.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.help-card {
    padding: var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.help-card h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.help-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.footer p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: bottom var(--transition-base);
    z-index: 1000;
    font-size: 0.9375rem;
}

.toast.show {
    bottom: 2rem;
}

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

.toast.error {
    background-color: var(--color-error);
}

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

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

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

    .nav {
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: 0.875rem;
    }

    .actions-bar {
        flex-direction: column;
    }

    .upload-options {
        flex-direction: column;
    }

    .table-container {
        font-size: 0.8125rem;
    }

    .card {
        padding: var(--spacing-lg);
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* ========================================
   SCROLLBAR STYLING (Webkit)
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}






/* ========================================
   Estilos para el Grid de Contacto
   ======================================== */
/* seccion sobre mi */
.contact-grid {
    display: grid;
    /* Adapta el número de columnas según el tamaño de la pantalla */
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

/* Estilos de la Tarjeta de Contacto (El Enlace) */
.contact-card {
    text-decoration: none;
    /* Quitar el subrayado de los enlaces */
    color: inherit;
    /* Heredar el color del texto */
    padding: 25px;
    border: 1px solid #e0e0e0;
    /* Borde sutil */
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    /* Transiciones suaves para hover */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 150px;
    /* Altura mínima para que se vean bien */
}

/* Efecto Hover (Elegante) */
.contact-card:hover {
    border-color: #007bff;
    /* Un color de énfasis */
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.1);
    transform: translateY(-5px);
    /* Pequeño levantamiento */
}

/* Icono */
.contact-card .icon {
    width: 40px;
    height: 40px;
    color: #007bff;
    /* Color principal del icono */
    margin-bottom: 10px;
    stroke-width: 1.5;
    /* Hace que el icono se vea más fino y elegante */
}

/* Título de la Tarjeta */
.contact-card h3 {
    margin: 10px 0 5px 0;
    font-size: 1.2rem;
    color: #333;
}

/* Subtítulo/Descripción */
.contact-card p {
    font-size: 0.9rem;
    color: #6c757d;
}


/* ========================================
   LOGO
   ======================================== */

/* 1. Contenedor del Logo y Firma */
.logo-group {
    display: flex;
    /* Alinea los elementos (logo y nombre) horizontalmente */
    align-items: flex-end;
    /* Alinea los elementos a la parte inferior (verticalmente) */
    gap: 10px;
    /* Espacio entre el logo y tu nombre */
}

/* 2. Estilo de la Firma del Autor */
.author-signature {
    /* Estilo minimalista y sutil */
    font-size: 0.8rem;
    /* Tamaño más pequeño que el logo */
    font-weight: 400;
    /* Peso normal para que no sea tan dominante */
    color: #6c757d;
    /* Color gris/sutil para contraste suave */

    /* Opcional: Un poco de estilo itálico (cursiva) para parecer una firma */
    /* font-style: italic; */

    /* Pequeño ajuste para alineación vertical perfecta si es necesario */
    /* position: relative; */
    /* bottom: -2px; */
}

/* 3. Ajuste al Título Principal (Opcional) */
.logo {
    margin: 0;
    /* Asegúrate de quitar cualquier margen por defecto del h1 */
    font-size: 1.8rem;
    /* Ejemplo de tamaño */
}