/* ========================================
   INFORME DE JORNADA LABORAL - ESTILOS
   Diseño: Documento oficial / Editorial
   Versión 3.0 - Con feriados, métodos y horas extra
   ======================================== */

/* Variables CSS */
:root {
    /* Colores principales */
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-primary-dark: #0d1b2a;
    --color-accent: #c53030;
    --color-accent-light: #fc8181;
    --color-success: #276749;
    --color-success-light: #9ae6b4;
    --color-warning: #b7791f;
    --color-warning-light: #faf089;
    --color-info: #2b6cb0;
    --color-info-light: #bee3f8;

    /* Colores neutros */
    --color-bg: #fdfcfb;
    --color-bg-alt: #f7f5f3;
    --color-bg-section: #ffffff;
    --color-text: #2d3748;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;
    --color-border: #e2e0dd;
    --color-border-dark: #cbd5e0;

    /* Colores calendario */
    --color-weekend: #fed7d7;
    --color-holiday: #fbd38d;
    --color-workday: #c6f6d5;

    /* Tipografía */
    --font-heading: 'Crimson Pro', Georgia, serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;

    /* Espaciado */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Contenedor del documento */
.document-container {
    max-width: 950px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    background: var(--color-bg-section);
    box-shadow: var(--shadow-lg);
    min-height: 100vh;
}

@media (min-width: 768px) {
    .document-container {
        margin: var(--space-xl) auto;
        padding: var(--space-3xl);
        border-radius: 2px;
    }
}

/* ========================================
   ENCABEZADO DEL DOCUMENTO
   ======================================== */
.document-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 2px solid var(--color-primary);
    position: relative;
}

.header-decoration {
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin: 0 auto var(--space-lg);
}

.document-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.document-subtitle {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-light);
    font-style: italic;
}

.header-meta {
    margin-top: var(--space-lg);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.meta-item {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-alt);
    border-radius: 2px;
}

/* ========================================
   SECCIONES
   ======================================== */
section {
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
}

.section-number {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-accent);
    font-family: var(--font-body);
}

.section-intro {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
    max-width: 75ch;
}

/* ========================================
   PARÁMETROS
   ======================================== */
.parameters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.parameter-card {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

.parameter-card.highlight-card {
    background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
    border: 2px solid var(--color-info);
    grid-column: 1 / -1;
}

.parameter-card.highlight-card-green {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    border: 2px solid var(--color-success);
    grid-column: 1 / -1;
}

.parameter-label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.parameter-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--color-border-dark);
    border-radius: 4px;
    background: var(--color-bg-section);
    color: var(--color-text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.parameter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.parameter-help {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
    font-style: italic;
}

/* Input group para horas y minutos */
.input-group {
    display: flex;
    gap: var(--space-md);
}

.input-with-unit {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.input-with-unit .parameter-input {
    flex: 1;
    min-width: 0;
}

.input-unit {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.btn-calculate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
}

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

.btn-calculate:active {
    transform: scale(0.98);
}

.btn-icon {
    font-size: 1.25rem;
}

/* ========================================
   MÉTODOS DE CÁLCULO
   ======================================== */
.methods-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.method-card {
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--color-border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.method-card.method-daily {
    border-color: var(--color-success);
}

.method-card.method-weekly {
    border-color: var(--color-info);
}

.method-card.active {
    box-shadow: 0 0 0 4px rgba(39, 103, 73, 0.3);
    transform: scale(1.02);
}

.method-card.inactive {
    opacity: 0.6;
}

.method-header {
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.method-daily .method-header {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
}

.method-weekly .method-header {
    background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
}

.method-icon {
    font-size: 1.5rem;
}

.method-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin: 0;
    flex: 1;
}

.method-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    background: var(--color-text-muted);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.method-badge.recommended {
    background: var(--color-success);
}

.method-body {
    padding: var(--space-lg);
    background: var(--color-bg-section);
}

.method-description {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.method-formula {
    background: var(--color-bg-alt);
    padding: var(--space-md);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: var(--space-md);
    border-left: 3px solid var(--color-primary);
}

.method-example {
    background: var(--color-warning-light);
    padding: var(--space-md);
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.method-when {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.methods-warning {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: linear-gradient(135deg, #fffff0 0%, #fefcbf 100%);
    border: 2px solid var(--color-warning);
    border-radius: 8px;
    margin-bottom: var(--space-xl);
}

.warning-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.warning-content {
    flex: 1;
}

.warning-content strong {
    color: var(--color-warning);
    display: block;
    margin-bottom: var(--space-sm);
}

.warning-content p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin: 0;
}

.current-method-detail {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

.current-method-title {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* ========================================
   FERIADOS
   ======================================== */
.holidays-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.holiday-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-alt);
    border-radius: 4px;
    border-left: 4px solid var(--color-border);
}

.holiday-item.applies {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border-left-color: var(--color-accent);
}

.holiday-date {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 100px;
}

.holiday-name {
    font-size: 0.95rem;
    color: var(--color-text);
    flex: 1;
}

.holiday-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    background: var(--color-accent);
    color: white;
    border-radius: 10px;
}

.feriados-impacto {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border: 2px solid var(--color-accent);
    border-radius: 8px;
}

.feriados-impacto-title {
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.feriados-impacto-content {
    font-size: 0.95rem;
    line-height: 1.8;
}

.feriados-impacto-formula {
    font-family: var(--font-mono);
    background: white;
    padding: var(--space-md);
    border-radius: 4px;
    margin: var(--space-md) 0;
}

/* ========================================
   CALENDARIO
   ======================================== */
.calendar-container {
    margin-bottom: var(--space-lg);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.calendar-header {
    background: var(--color-primary);
    color: white;
    padding: var(--space-sm);
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.calendar-day {
    background: var(--color-bg-section);
    padding: var(--space-sm);
    min-height: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.calendar-day.empty {
    background: var(--color-bg-alt);
}

.calendar-day.weekend {
    background: var(--color-weekend);
}

.calendar-day.holiday {
    background: var(--color-holiday);
}

.calendar-day.workday {
    background: var(--color-workday);
}

.day-number {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
}

.day-label {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    margin-top: 2px;
}

.calendar-day.holiday .day-label {
    color: var(--color-accent);
    font-weight: 600;
}

.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    justify-content: center;
    padding: var(--space-md);
    background: var(--color-bg-alt);
    border-radius: 4px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid var(--color-border-dark);
}

.legend-color.workday {
    background: var(--color-workday);
}

.legend-color.weekend {
    background: var(--color-weekend);
}

.legend-color.holiday {
    background: var(--color-holiday);
}

/* ========================================
   GLOSARIO
   ======================================== */
.glossary-grid {
    display: grid;
    gap: var(--space-md);
}

.glossary-item {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-alt);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 4px 4px 0;
}

.glossary-item dt {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    font-size: 1rem;
}

.glossary-item dd {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   RESUMEN EJECUTIVO
   ======================================== */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-lg);
}

.summary-card {
    padding: var(--space-lg);
    border-radius: 4px;
    text-align: center;
    border: 1px solid var(--color-border);
}

.summary-card.adeudadas {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border-color: var(--color-accent-light);
}

.summary-card.devueltas {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    border-color: var(--color-success-light);
}

.summary-card.extra-favor {
    background: linear-gradient(135deg, #e6fffa 0%, #b2f5ea 100%);
    border-color: #38b2ac;
}

.summary-card.pendientes {
    background: linear-gradient(135deg, #fffff0 0%, #fefcbf 100%);
    border-color: var(--color-warning-light);
}

.summary-card.completado {
    background: linear-gradient(135deg, #f0fff4 0%, #9ae6b4 100%);
    border-color: var(--color-success);
}

.summary-card.metodo {
    background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
    border-color: var(--color-info);
}

.summary-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.summary-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.2;
}

.summary-subvalue {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-top: var(--space-xs);
}

/* ========================================
   CÁLCULOS DETALLADOS
   ======================================== */
.calculation-block {
    background: var(--color-bg-alt);
    padding: var(--space-xl);
    border-radius: 4px;
    margin-bottom: var(--space-lg);
    border: 1px solid var(--color-border);
}

.calculation-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.calculation-title::before {
    content: "▸";
    color: var(--color-accent);
}

.calculation-explanation {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
}

.calculation-steps {
    background: var(--color-bg-section);
    padding: var(--space-lg);
    border-radius: 4px;
    border: 1px dashed var(--color-border-dark);
}

.calc-step {
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px dotted var(--color-border);
}

.calc-step:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.calc-step.highlight {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    margin: calc(-1 * var(--space-md));
    padding: var(--space-md);
    border-radius: 4px;
    border: 1px solid var(--color-accent-light);
    margin-bottom: var(--space-md);
}

.step-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.step-formula {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-primary-dark);
    background: var(--color-bg-alt);
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
    display: inline-block;
    margin-bottom: var(--space-xs);
}

.step-formula.accent {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border: 1px solid var(--color-accent-light);
}

.step-explanation {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-style: italic;
}

.calc-result {
    background: var(--color-primary);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: 4px;
    margin-top: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.result-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.result-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
}

/* ========================================
   BALANCE FINAL
   ======================================== */
.balance-container {
    display: grid;
    gap: var(--space-xl);
}

.balance-equation {
    background: var(--color-bg-alt);
    padding: var(--space-xl);
    border-radius: 4px;
    text-align: center;
    border: 2px solid var(--color-primary);
}

.equation-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.equation-item {
    text-align: center;
    padding: var(--space-md);
    min-width: 100px;
}

.equation-number {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.equation-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.equation-operator {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent);
}

.balance-result {
    padding: var(--space-lg);
    border-radius: 4px;
    text-align: center;
}

.balance-result.positive {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    border: 2px solid var(--color-success);
}

.balance-result.negative {
    background: linear-gradient(135deg, #fffff0 0%, #fefcbf 100%);
    border: 2px solid var(--color-warning);
}

.balance-result.zero {
    background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
    border: 2px solid var(--color-info);
}

.balance-message {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.balance-detail {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.projection-block {
    background: var(--color-bg-section);
    padding: var(--space-lg);
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

.projection-title {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.projection-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px dotted var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.projection-item:last-child {
    border-bottom: none;
}

.projection-label {
    color: var(--color-text-light);
}

.projection-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-primary-dark);
}

/* ========================================
   TABLAS
   ======================================== */
.table-container {
    margin-bottom: var(--space-2xl);
}

.table-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th {
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    text-align: left;
    padding: var(--space-md);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.data-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

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

.data-table tbody tr:nth-child(even) {
    background: var(--color-bg-alt);
}

.data-table tbody tr:nth-child(even):hover {
    background: var(--color-border);
}

.data-table .mono {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.table-footer {
    background: var(--color-primary-dark);
    color: white;
}

.table-footer td {
    border-bottom: none;
    font-weight: 600;
}

.table-summary {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-alt);
    border-radius: 4px;
    font-size: 0.9rem;
}

.table-summary-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.table-summary-label {
    color: var(--color-text-light);
}

.table-summary-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-primary);
}

/* ========================================
   METODOLOGÍA
   ======================================== */
.methodology-content {
    line-height: 1.8;
}

.methodology-section-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.methodology-section-title:first-child {
    margin-top: 0;
}

.formula-box {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 4px;
    margin: var(--space-md) 0;
    border-left: 4px solid var(--color-primary);
}

.formula-box.accent {
    border-left-color: var(--color-accent);
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
}

.formula-title {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.formula-content {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-primary-dark);
    line-height: 1.8;
}

/* ========================================
   NOTAS
   ======================================== */
.notes-content {
    display: grid;
    gap: var(--space-md);
}

.note {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: 4px;
    align-items: flex-start;
}

.note-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.note-text {
    font-size: 0.95rem;
    line-height: 1.6;
}

.note-text strong {
    display: block;
    margin-bottom: var(--space-xs);
}

.note-info {
    background: var(--color-info-light);
    border: 1px solid var(--color-info);
}

.note-info .note-icon {
    color: var(--color-info);
}

.note-warning {
    background: var(--color-warning-light);
    border: 1px solid var(--color-warning);
}

.note-warning .note-icon {
    color: var(--color-warning);
}

.note-success {
    background: var(--color-success-light);
    border: 1px solid var(--color-success);
}

.note-success .note-icon {
    color: var(--color-success);
}

/* ========================================
   PIE DE DOCUMENTO
   ======================================== */
.document-footer {
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-line {
    width: 100px;
    height: 2px;
    background: var(--color-primary);
    margin: 0 auto var(--space-lg);
}

.footer-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

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

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

.font-mono {
    font-family: var(--font-mono);
}

.highlight {
    background: linear-gradient(120deg, #fef3c7 0%, #fde68a 100%);
    padding: 0 var(--space-xs);
    border-radius: 2px;
}

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

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

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

/* Responsive */
@media (max-width: 600px) {
    .document-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.25rem;
        flex-direction: column;
        gap: var(--space-xs);
    }

    .equation-visual {
        flex-direction: column;
    }

    .equation-operator {
        transform: rotate(90deg);
    }

    .data-table {
        font-size: 0.8rem;
    }

    .data-table th,
    .data-table td {
        padding: var(--space-xs) var(--space-sm);
    }

    .methods-comparison {
        grid-template-columns: 1fr;
    }

    .calendar-day {
        min-height: 45px;
        padding: var(--space-xs);
    }

    .day-number {
        font-size: 0.9rem;
    }

    .day-label {
        display: none;
    }

    .input-group {
        flex-direction: column;
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }

    .document-container {
        box-shadow: none;
        margin: 0;
        padding: 1cm;
    }

    .btn-calculate,
    .parameters-section {
        display: none;
    }

    .section-title {
        break-after: avoid;
    }

    .calculation-block,
    .table-container {
        break-inside: avoid;
    }
}


/* ========================================
   MENSAJE INICIAL Y RESULTADOS OCULTOS
   ======================================== */
.mensaje-inicial-section {
    margin-bottom: var(--space-3xl);
}

.mensaje-inicial-box {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border: 2px dashed var(--color-border-dark);
    border-radius: 8px;
}

.mensaje-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-lg);
}

.mensaje-inicial-box h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.mensaje-inicial-box p {
    font-size: 1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--space-md);
}

.mensaje-hint {
    font-size: 0.9rem !important;
    color: var(--color-text-muted) !important;
    font-style: italic;
}

.resultados-ocultos {
    display: none;
}

.resultados-visibles {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

.mensaje-oculto {
    display: none;
}


/* ========================================
   BOTONES DE EXPORTACIÓN
   ======================================== */
.export-buttons {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-align: center;
}

.export-buttons.hidden {
    display: none;
}

.export-buttons-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.export-buttons-group {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.btn-export {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

.btn-copiar {
    background: white;
    color: var(--color-info);
    border-color: var(--color-info);
}

.btn-copiar:hover {
    background: var(--color-info);
    color: white;
}

.btn-preview {
    background: white;
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.btn-preview:hover {
    background: var(--color-warning);
    color: white;
}

.btn-pdf {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.btn-pdf:hover {
    background: #9b2c2c;
    border-color: #9b2c2c;
}

/* ========================================
   MODAL DE VISTA PREVIA
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-lg);
}

.modal-content {
    background: white;
    border-radius: 8px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-primary);
    color: white;
    border-radius: 8px 8px 0 0;
}

.modal-header h3 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: white;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.modal-close:hover {
    opacity: 1;
}

.modal-body {
    flex: 1;
    overflow: auto;
    padding: var(--space-lg);
    background: #1a1a2e;
}

.modal-body pre {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.5;
    color: #e0e0e0;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    border-radius: 0 0 8px 8px;
}

.modal-footer .btn-secondary {
    padding: var(--space-sm) var(--space-lg);
    background: white;
    color: var(--color-text);
    border: 1px solid var(--color-border-dark);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

.modal-footer .btn-secondary:hover {
    background: var(--color-bg-alt);
}

.modal-footer .btn-primary {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.modal-footer .btn-primary:hover {
    background: var(--color-primary-light);
}

/* Toast de notificación */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-primary-dark);
    color: white;
    border-radius: 8px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s;
}

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

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

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

@media print {
    .export-buttons {
        display: none;
    }
}