/* Reset y configuración base para la calculadora de baterías solares */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.calculadora-baterias {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
}

/* Variables CSS para el tema solar */
:root {
    --bat-primary: #f59e0b;
    --bat-primary-dark: #d97706;
    --bat-accent: #0ea5e9;
    --bat-accent-dark: #0284c7;
    --bat-success: #10b981;
    --bat-warning: #f59e0b;
    --bat-error: #ef4444;
    --bat-background: #f8fafc;
    --bat-card-bg: #ffffff;
    --bat-text-primary: #1e293b;
    --bat-text-secondary: #64748b;
    --bat-text-muted: #94a3b8;
    --bat-border: #e2e8f0;
    --bat-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --bat-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --bat-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --bat-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hero Section */
.bat-hero {
    position: relative;
    background: linear-gradient(135deg, var(--bat-primary) 0%, var(--bat-accent) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    overflow: hidden;
    margin-bottom: 60px;
}

.bat-hero::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 0 100 100"><defs><pattern id="solar" patternUnits="userSpaceOnUse" width="20" height="20"><rect width="20" height="20" fill="none"/><circle cx="10" cy="10" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23solar)"/></svg>') repeat;
    opacity: 0.3;
}

.bat-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
}

.bat-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.bat-hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: bat-float 3s ease-in-out infinite;
}

.bat-hero-title i {
    margin-right: 15px;
    color: #fbbf24;
    animation: bat-pulse 2s ease-in-out infinite;
}

.bat-hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto 40px;
    font-weight: 300;
}

.bat-hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.bat-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 150px;
    transition: var(--bat-transition);
}

.bat-feature:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.bat-feature i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #fbbf24;
}

.bat-feature span {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Container */
.bat-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Calculator Grid */
.bat-calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

/* Cards */
.bat-card {
    background: var(--bat-card-bg);
    border-radius: 16px;
    box-shadow: var(--bat-shadow-lg);
    overflow: hidden;
    transition: var(--bat-transition);
    border: 1px solid var(--bat-border);
}

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

.bat-card-header {
    padding: 30px 30px 20px;
    border-bottom: 1px solid var(--bat-border);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.bat-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--bat-text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.bat-card-title i {
    color: var(--bat-primary);
}

.bat-card-description {
    color: var(--bat-text-secondary);
    font-size: 0.95rem;
}

.bat-card-content {
    padding: 30px;
}

/* Input Groups */
.bat-input-group {
    margin-bottom: 24px;
}

.bat-input-group label {
    display: block;
    font-weight: 500;
    color: var(--bat-text-primary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.bat-input-group input,
.bat-input-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--bat-border);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--bat-transition);
    background: white;
    color: var(--bat-text-primary);
}

.bat-input-group input:focus,
.bat-input-group select:focus {
    outline: none;
    border-color: var(--bat-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.bat-input-group input:hover,
.bat-input-group select:hover {
    border-color: var(--bat-primary);
}

.bat-input-group input.error {
    border-color: var(--bat-error);
    background: #fef2f2;
}

.bat-input-group input.warning {
    border-color: var(--bat-warning);
    background: #fffbeb;
}

.bat-input-group small {
    display: block;
    color: var(--bat-text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* Input with select */
.bat-input-with-select {
    display: flex;
    gap: 8px;
}



.bat-input-with-select input {
    flex: 2; /* Le damos más espacio relativo al select */
    padding: 6px 10px; /* Opcional: aumentar padding para mayor comodidad */
    font-size: 1rem; /* Opcional: mejorar legibilidad */
}

.bat-input-with-select select {
    flex: 1; /* Menor espacio relativo */
    min-width: 80px;
}








/* Section Divider */
.bat-section-divider {
    margin: 30px 0 20px;
    padding: 15px 0;
    border-top: 2px solid var(--bat-border);
}

.bat-section-divider h3 {
    color: var(--bat-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bat-section-divider h3 i {
    color: var(--bat-accent);
}

/* Buttons */
.bat-btn-primary {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--bat-primary) 0%, var(--bat-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--bat-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.bat-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

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

.bat-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--bat-text-muted);
}

/* Results Section */
.bat-results-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.bat-placeholder-card {
    border: 2px dashed var(--bat-border);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.bat-placeholder-content {
    padding: 60px 30px;
    text-align: center;
    color: var(--bat-text-muted);
}

.bat-placeholder-content i {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.6;
    animation: bat-float 3s ease-in-out infinite;
}

.bat-placeholder-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--bat-text-secondary);
}

.bat-results-card {
    border: 2px solid var(--bat-accent);
    background: white;
}

.bat-schema-card {
    border: 2px solid var(--bat-success);
}

/* Results Grid */
.bat-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.bat-result-box {
    text-align: center;
    padding: 24px;
    border-radius: 12px;
    color: white;
    box-shadow: var(--bat-shadow);
    transition: var(--bat-transition);
}

.bat-result-box:hover {
    transform: scale(1.05);
}

.bat-result-box.accent {
    background: linear-gradient(135deg, var(--bat-accent), var(--bat-accent-dark));
}

.bat-result-box.primary {
    background: linear-gradient(135deg, var(--bat-primary), var(--bat-primary-dark));
}

.bat-result-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
    animation: bat-pulse 2s ease-in-out infinite;
}

.bat-result-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Details List */
.bat-details-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bat-detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 8px;
    font-weight: 500;
    border: 1px solid var(--bat-border);
}

.bat-badge {
    background: white;
    color: var(--bat-text-primary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--bat-border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Info Card */
.bat-info-card {
    background: linear-gradient(135deg, #e0f2fe 0%, #b3e5fc 100%);
    border: 2px solid var(--bat-accent);
    border-radius: 12px;
    padding: 20px;
    color: #0c4a6e;
    box-shadow: var(--bat-shadow);
}

.bat-info-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: 600;
}

.bat-info-header i {
    color: var(--bat-accent);
}

/* Connection Schema */
.bat-connection-schema {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--bat-border);
}

.bat-schema-title {
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--bat-text-primary);
    margin-bottom: 20px;
}

.bat-schema-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

/* Components */
.bat-component {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    min-width: 120px;
    text-align: center;
    box-shadow: var(--bat-shadow);
    transition: var(--bat-transition);
}

.bat-component:hover {
    transform: translateY(-2px);
}

.bat-component.solar-panel {
    background: linear-gradient(135deg, var(--bat-primary), var(--bat-primary-dark));
}

.bat-component.regulator {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.bat-component.load {
    background: linear-gradient(135deg, var(--bat-success), #059669);
}

.bat-component i {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.bat-component small {
    font-size: 0.8rem;
    opacity: 0.9;
    margin-top: 4px;
}

/* Connection arrows */
.bat-connection-arrow {
    color: var(--bat-text-secondary);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 30px;
}

/* Battery Bank */
.bat-battery-bank {
    background: white;
    border: 2px solid var(--bat-border);
    border-radius: 10px;
    padding: 20px;
    margin: 10px 0;
    box-shadow: var(--bat-shadow);
}

.bat-bank-title {
    text-align: center;
    font-weight: 600;
    color: var(--bat-text-primary);
    margin-bottom: 15px;
}

.bat-parallel-group {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px 0;
    gap: 10px;
}

.bat-battery {
    background: linear-gradient(135deg, var(--bat-accent), var(--bat-accent-dark));
    color: white;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    min-width: 80px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--bat-shadow);
    transition: var(--bat-transition);
}

.bat-battery:hover {
    transform: scale(1.05);
}

.bat-battery i {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.bat-series-connection {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--bat-text-primary);
}

.bat-parallel-connection {
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--bat-text-primary);
    margin: 5px 0;
}

/* Notifications */
.bat-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    box-shadow: var(--bat-shadow-xl);
    z-index: 1000;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: bat-slide-in 0.3s ease-out;
}

.bat-notification-error {
    background: linear-gradient(135deg, var(--bat-error), #dc2626);
}

.bat-notification-success {
    background: linear-gradient(135deg, var(--bat-success), #059669);
}

.bat-notification-info {
    background: linear-gradient(135deg, var(--bat-accent), var(--bat-accent-dark));
}

.bat-notification button {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
    border-radius: 4px;
    transition: var(--bat-transition);
}

.bat-notification button:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Loading states */
.bat-loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Animations */
@keyframes bat-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@keyframes bat-float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes bat-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bat-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.bat-fade-in {
    animation: bat-fade-in 0.5s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .bat-calculator-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .bat-hero-title {
        font-size: 2.5rem;
    }
    
    .bat-hero-features {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .bat-hero {
        padding: 60px 0;
    }
    
    .bat-hero-title {
        font-size: 2rem;
    }
    
    .bat-hero-subtitle {
        font-size: 1.1rem;
    }
    
    .bat-hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .bat-card-header,
    .bat-card-content {
        padding: 20px;
    }
    
    .bat-results-grid {
        grid-template-columns: 1fr;
    }
    
    .bat-input-with-select {
        flex-direction: column;
    }
    
    .bat-parallel-group {
        flex-direction: column;
        gap: 10px;
    }
    
    .bat-detail-item {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .bat-container {
        padding: 0 15px;
    }
    
    .bat-hero-title {
        font-size: 1.75rem;
    }
    
    .bat-card-header,
    .bat-card-content {
        padding: 15px;
    }
    
    .bat-notification {
        right: 10px;
        left: 10px;
        max-width: none;
    }
}


/* ========================
   Artículo introductorio
   ======================== */
.bat-article-intro {
    background: var(--bat-card-bg);
    padding: 30px 40px;
    margin-bottom: 50px;
    border-radius: 16px;
    box-shadow: var(--bat-shadow-lg);
    border: 1px solid var(--bat-border);
    animation: bat-fade-in 0.6s ease-out;
}

.bat-article-intro h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--bat-text-primary);
    margin-bottom: 15px;
}

.bat-article-intro p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--bat-text-secondary);
}

/* ========================
   FAQ Acordeón
   ======================== */
.bat-faq-section {
    margin: 60px 0;
}

.bat-faq-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--bat-text-primary);
    margin-bottom: 25px;
    text-align: center;
}

.bat-faq-accordion {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.bat-faq-item {
    background: var(--bat-card-bg);
    border-radius: 12px;
    border: 1px solid var(--bat-border);
    box-shadow: var(--bat-shadow);
    overflow: hidden;
    transition: var(--bat-transition);
}

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

.bat-faq-question {
    width: 100%;
    text-align: left;
    padding: 18px 25px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--bat-text-primary);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--bat-transition);
}

.bat-faq-question i {
    transition: transform 0.3s ease;
}

.bat-faq-question[aria-expanded="true"] i {
    transform: rotate(180deg);
    color: var(--bat-accent);
}

.bat-faq-answer {
    padding: 20px 25px;
    font-size: 0.95rem;
    color: var(--bat-text-secondary);
    line-height: 1.6;
    background: var(--bat-card-bg);
    border-top: 1px solid var(--bat-border);
    animation: bat-fade-in 0.3s ease-out;
}

/* Responsive FAQ */
@media (max-width: 768px) {
    .bat-article-intro {
        padding: 20px 25px;
    }

    .bat-faq-section h2 {
        font-size: 1.5rem;
    }

    .bat-faq-question {
        padding: 15px 20px;
        font-size: 0.95rem;
    }

    .bat-faq-answer {
        padding: 15px 20px;
        font-size: 0.9rem;
    }
}