/* =============================================================
   Calculadora TorresLuthier - Hub de Audio a Válvulas
   Proyecto: Calculadoras de Amplificadores (Bias, Matching, OT, Load Line)
   Versión SEO-Optimized: 1.0.0
   Keyword Focus: calculadora, calculadoras, válvulas, audio hi-fi
   ============================================================= */

:root {
    --bg-dark: #0a0a0c;
    --bg-card: rgba(255, 255, 255, 0.03);
    --accent-gold: hsl(38, 92%, 50%);
    --accent-gold-glow: hsla(38, 92%, 50%, 0.4);
    --accent-blue: hsl(210, 100%, 60%);
    --accent-blue-glow: hsla(210, 100%, 60%, 0.4);
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1aa;
    --glass-border: rgba(255, 255, 255, 0.08);
    --transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Solo para la versión Standalone */
body.tc-standalone-body {
    background-color: var(--bg-dark) !important;
    margin: 0 !important;
    padding: 0 !important;
}

.tc-calculadora-home-wrapper * {
    box-sizing: border-box !important;
}

.tc-calculadora-home-wrapper {
    background-color: var(--bg-dark) !important;
    color: var(--text-primary) !important;
    font-family: 'Inter', sans-serif !important;
    line-height: 1.6 !important;
    width: 100% !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 60px 24px !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
}

.tc-calculadora-home-wrapper h1, 
.tc-calculadora-home-wrapper h2, 
.tc-calculadora-home-wrapper h3 {
    font-family: 'Outfit', sans-serif !important;
    font-weight: 800 !important;
    margin: 0 !important;
}

/* --- Header Section --- */
.tc-calculadora-home-wrapper header {
    text-align: center !important;
    margin-bottom: 80px !important;
    animation: fadeInDown 1s ease-out;
}

.tc-calculadora-home-wrapper header h1 {
    font-size: clamp(1.8rem, 6vw, 4rem) !important;
    background: linear-gradient(135deg, #fff 30%, var(--accent-gold) 100%);
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    margin-bottom: 24px !important;
    letter-spacing: -0.02em !important;
    line-height: 1.2 !important;
    word-wrap: break-word !important;
}

.tc-calculadora-home-wrapper header p {
    max-width: 900px !important;
    margin: 0 auto !important;
    font-size: clamp(1rem, 3vw, 1.25rem) !important;
    color: var(--text-secondary) !important;
    font-weight: 300 !important;
    text-align: justify !important;
    hyphens: auto !important;
    word-wrap: break-word !important;
}

/* --- Grid Section --- */
.tc-calculadora-home-wrapper .calculadoras-grid-seo {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 450px), 1fr)) !important;
    gap: 40px !important;
}

.tc-calculadora-home-wrapper .calculadora-card-item {
    background: var(--bg-card) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 24px !important;
    overflow: hidden !important;
    backdrop-filter: blur(12px) !important;
    transition: var(--transition) !important;
    display: flex !important;
    flex-direction: column !important;
    position: relative !important;
}

.tc-calculadora-home-wrapper .calculadora-card-item:hover {
    transform: translateY(-8px) !important;
    background: rgba(255, 255, 255, 0.06) !important;
    border-color: var(--accent-gold) !important;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5) !important;
}

.tc-calculadora-home-wrapper .card-image-wrapper {
    width: 100% !important;
    height: 260px !important;
    overflow: hidden !important;
}

.tc-calculadora-home-wrapper .card-image-wrapper img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    transition: var(--transition) !important;
    display: block !important;
}

.tc-calculadora-home-wrapper .calculadora-card-item:hover .card-image-wrapper img {
    transform: scale(1.05) !important;
}

.tc-calculadora-home-wrapper .card-content {
    padding: 40px !important;
    flex-grow: 1 !important;
    display: flex !important;
    flex-direction: column !important;
}

.tc-calculadora-home-wrapper .card-content h3 {
    font-size: 1.8rem !important;
    margin-bottom: 20px !important;
    color: var(--accent-gold) !important;
}

.tc-calculadora-home-wrapper .card-content p {
    color: var(--text-secondary) !important;
    font-size: 1rem !important;
    margin-bottom: 32px !important;
    flex-grow: 1 !important;
    text-align: justify !important;
}

.tc-calculadora-home-wrapper .btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 16px 32px !important;
    border-radius: 16px !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    font-family: 'Outfit', sans-serif !important;
    font-size: 1.1rem !important;
    transition: var(--transition) !important;
    cursor: pointer !important;
    border: none !important;
    width: 100% !important;
    gap: 12px !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
}

.tc-calculadora-home-wrapper .btn-primary {
    background: linear-gradient(135deg, var(--accent-gold), #b45309) !important;
    color: #000 !important;
    box-shadow: 0 4px 20px var(--accent-gold-glow) !important;
}

.tc-calculadora-home-wrapper .btn-primary:hover {
    transform: scale(1.02) !important;
    box-shadow: 0 12px 30px var(--accent-gold-glow) !important;
    filter: brightness(1.2) !important;
}

/* --- Footer Info --- */
.tc-calculadora-home-wrapper .features-ribbon {
    margin-top: 100px !important;
    padding: 40px !important;
    background: rgba(255,255,255,0.02) !important;
    border-radius: 32px !important;
    display: flex !important;
    justify-content: space-around !important;
    gap: 30px !important;
    flex-wrap: wrap !important;
}

.tc-calculadora-home-wrapper .feature-item {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 16px !important;
    max-width: 250px !important;
}

.tc-calculadora-home-wrapper .feature-item svg {
    color: var(--accent-gold) !important;
    width: 32px !important;
    height: 32px !important;
}

.tc-calculadora-home-wrapper .feature-item span {
    font-weight: 600 !important;
    font-size: 1.1rem !important;
    color: #fff !important;
}

.tc-calculadora-home-wrapper .feature-item p {
    font-size: 0.9rem !important;
    color: var(--text-secondary) !important;
}

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

/* --- Quick Guide --- */
.tc-calculadora-home-wrapper .quick-guide {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)) !important;
    gap: 20px !important;
    margin-bottom: 80px !important;
}

.tc-calculadora-home-wrapper .guide-item {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px dashed var(--glass-border) !important;
    border-radius: 16px !important;
    padding: 24px !important;
    transition: var(--transition) !important;
}

.tc-calculadora-home-wrapper .guide-item h4 {
    color: var(--accent-gold) !important;
    font-size: 1.1rem !important;
    margin-bottom: 8px !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
}

.tc-calculadora-home-wrapper .guide-item p {
    font-size: 0.9rem !important;
    color: var(--text-secondary) !important;
}

/* --- Technical Synthesis --- */
.tc-calculadora-home-wrapper .technical-synthesis {
    margin: 80px 0 !important;
    background: linear-gradient(135deg, rgba(38, 92, 50, 0.05), rgba(10, 132, 255, 0.05)) !important;
    border: 1px solid var(--glass-border) !important;
    border-left: 4px solid var(--accent-gold) !important;
    border-radius: 16px !important;
    padding: 40px !important;
}

.tc-calculadora-home-wrapper .synthesis-content {
    font-size: 1.05rem !important;
    line-height: 1.8 !important;
    color: var(--text-primary) !important;
    text-align: justify !important;
}

.tc-calculadora-home-wrapper .synthesis-title {
    font-family: 'Outfit', sans-serif !important;
    font-weight: 800 !important;
    font-size: 1.4rem !important;
    margin-bottom: 20px !important;
    color: #fff !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
}

@media (max-width: 992px) {
    .tc-calculadora-home-wrapper .calculadoras-grid-seo { 
        grid-template-columns: 1fr !important; 
    }
    .tc-calculadora-home-wrapper .quick-guide {
        grid-template-columns: 1fr !important;
    }
    .tc-calculadora-home-wrapper { 
        padding: 40px 16px !important; 
    }
    .tc-calculadora-home-wrapper header {
        margin-bottom: 40px !important;
    }
    .tc-calculadora-home-wrapper .features-ribbon {
        padding: 24px 16px !important;
        gap: 20px !important;
    }
}

@media (max-width: 600px) {
    .tc-calculadora-home-wrapper {
        padding: 24px 12px !important;
    }
    .tc-calculadora-home-wrapper header h1 {
        font-size: 1.6rem !important;
        line-height: 1.3 !important;
    }
    .tc-calculadora-home-wrapper header p {
        font-size: 0.95rem !important;
    }
    .tc-calculadora-home-wrapper .card-content {
        padding: 20px !important;
    }
    .tc-calculadora-home-wrapper .card-content h3 {
        font-size: 1.3rem !important;
    }
    .tc-calculadora-home-wrapper .btn {
        padding: 14px 20px !important;
        font-size: 0.95rem !important;
    }
    .tc-calculadora-home-wrapper .technical-synthesis {
        padding: 20px !important;
        margin: 40px 0 !important;
    }
    .tc-calculadora-home-wrapper .synthesis-title {
        font-size: 1.1rem !important;
    }
    .tc-calculadora-home-wrapper .features-ribbon {
        margin-top: 60px !important;
        flex-direction: column !important;
        align-items: center !important;
    }
}
/* --- Help Examples Section --- */
.tc-calculadora-home-wrapper .help-examples {
    margin-top: 80px !important;
    padding: 60px 40px !important;
    background: rgba(255, 255, 255, 0.01) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 32px !important;
    animation: fadeIn 1s ease-out !important;
}

.tc-calculadora-home-wrapper .help-examples h3 {
    text-align: center !important;
    font-size: 2rem !important;
    color: #fff !important;
    margin-bottom: 40px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 15px !important;
}

.tc-calculadora-home-wrapper .help-examples h3 span {
    color: var(--accent-gold) !important;
}

.tc-calculadora-home-wrapper .help-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)) !important;
    gap: 30px !important;
}

.tc-calculadora-home-wrapper .help-card {
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 20px !important;
    padding: 30px !important;
    transition: var(--transition) !important;
}

.tc-calculadora-home-wrapper .help-card:hover {
    background: rgba(255, 255, 255, 0.05) !important;
    border-color: var(--accent-gold) !important;
    transform: translateY(-5px) !important;
}

.tc-calculadora-home-wrapper .help-card h4 {
    color: var(--accent-gold) !important;
    font-family: 'Outfit', sans-serif !important;
    font-size: 1.25rem !important;
    margin-bottom: 15px !important;
    font-weight: 600 !important;
}

.tc-calculadora-home-wrapper .help-card p {
    font-size: 0.95rem !important;
    color: var(--text-secondary) !important;
    margin: 0 !important;
    text-align: left !important;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 600px) {
    .tc-calculadora-home-wrapper .help-examples {
        padding: 30px 20px !important;
    }
    .tc-calculadora-home-wrapper .help-examples h3 {
        font-size: 1.5rem !important;
    }
}