/* Premium Base Typography & Grid Setup */
main.container {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
}

main.container h1 {
    font-weight: 800 !important;
    font-size: 2.5rem !important;
    letter-spacing: -0.5px;
}

.subtitle {
    font-weight: 600 !important;
    color: #4a5568 !important;
    font-size: 16px;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* Tab Component Styling - Heavy Duty */
.tab-btn {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 700 !important; /* फॉन्ट मोटा किया */
    background: #edf2f7;
    color: #2d3748;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
    outline: none;
}

.tab-btn:hover {
    background: #e2e8f0;
}

.tab-btn.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 6px rgba(66, 153, 225, 0.25);
}

.tab-content {
    display: none;
    background: #ffffff;
    padding: 25px;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    margin-bottom: 25px;
}

.tab-content.active-content {
    display: block;
    animation: fadeIn 0.25s ease-out;
}

.tab-content h3 {
    font-weight: 800 !important; /* सब-हेडिंग्स को कड़क बोल्ड किया */
    font-size: 1.4rem;
    color: #1a202c;
}

/* Input Fields UI Optimization */
.control-label {
    font-weight: 700 !important; /* लेबल्स को मजबूत लुक दिया */
    display: block;
    margin-bottom: 8px;
    color: #2d3748;
    font-size: 15px;
}

.pro-input {
    width: 100%;
    padding: 14px 12px;
    border: 2px solid #cbd5e0; /* बॉर्डर थोड़ी साफ की */
    border-radius: 6px;
    font-size: 16px;
    font-weight: 700 !important; /* इनपुट वैल्यू को मोटा किया */
    color: #1a202c;
    outline: none;
    box-sizing: border-box;
    font-family: inherit;
    transition: border-color 0.2s;
}

.pro-input:focus {
    border-color: var(--primary);
    background: #f7fafc;
}

/* Premium Output Banner Component */
.result-display-box {
    margin-top: 25px;
    background: #f7fafc;
    border: 1px solid var(--border);
    padding: 22px;
    border-radius: 8px;
    text-align: center;
}

.result-display-box span {
    font-weight: 800 !important; /* रिजल्ट का टाइटल और डार्क किया */
    font-size: 14px;
    color: #4a5568;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: block;
    margin-bottom: 8px;
}

.result-display-box h2 {
    font-weight: 850 !important; /* आउटपुट नंबर को भारी-भरकम बोल्ड लुक दिया */
    font-size: 2.6rem !important;
    color: var(--primary) !important;
    margin: 0;
    word-break: break-all;
    letter-spacing: -0.5px;
}

/* Universal Button Style */
.btn {
    cursor: pointer;
    border: none;
    color: white;
    font-family: inherit;
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

.btn:hover {
    opacity: 0.95;
    transform: translateY(-1px);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ⚡ LOGO SIZE SYNC WITH MOBILE.CSS ⚡ */
.site-logo-custom {
    height: 58px !important;
    width: auto !important;
    max-width: 100% !important;
    object-fit: contain !important;
    transition: height 0.3s ease;
}

/* Mobile Breakpoints Fixes */
@media (max-width: 991px) {
    .site-logo-custom {
        height: 44px !important;
    }
    .seo-content {
        padding: 0 20px !important;
    }
}

@media (max-width: 576px) {
    main.container h1 {
        font-size: 1.8rem !important;
    }
    .subtitle {
        font-size: 14px !important;
    }
    .tab-btn {
        width: 100%;
        text-align: center;
        padding: 10px 15px;
    }
    .dual-output-wrapper {
        grid-template-columns: 1fr !important;
    }
    .result-display-box h2 {
        font-size: 2rem !important;
    }
}