.seo-container h1 {
    font-weight: 700;
    font-size: 3rem;
    line-height: 1.25;
    margin-bottom: 1rem;
}
.seo-container h2 {
    font-weight: 600;
    font-size: 1.5rem;
    line-height: 2rem;
    margin-bottom: 1rem;
}
.seo-container h3 {
    font-weight: 600;
    font-size: 1.25rem;
    line-height: 1.75rem;
    margin-bottom: 1rem;
}
.seo-container h1, .seo-container h2, .seo-container h3, .seo-container h4, .seo-container h5, .seo-container h6, .seo-container span, .seo-container li, .seo-container table, .seo-container pre, .seo-container i, .seo-container strong, .seo-container b {
    color: #ffffff;
    margin-bottom: 1rem;
}
.seo-container p {
    color: #D1D5DB;
    margin-bottom: 1rem;
}
.seo-container {
    max-width: 56rem;
    margin: 0 auto;
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.seo-container table {
    width: 100%;
    max-width: 800px;
    margin: 2rem auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}
.seo-container table thead {
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.seo-container table th {
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.seo-container table td {
    padding: 0.75rem 1.5rem;
    color: #cbd5e1;
    font-size: 0.875rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background-color 0.2s ease;
}
.seo-container table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}
.seo-container table tbody tr:last-child td {
    border-bottom: none;
}
.footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #1e293b 0%, #7c3aed 50%, #1e293b 100%);
    min-height: 100vh;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}
a {
    color: #ffffff !important;
}
a:hover {
    text-decoration: underline;
}
.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}
.subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.calculator-types {
    margin-bottom: 3rem;
}
.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}
.calculator-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    text-align: left;
    color: white;
    border: none;
    font-family: inherit;
}
.calculator-card:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}
.calculator-card.active {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.card-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}
.basic-icon { background: linear-gradient(135deg, #3b82f6, #8b5cf6); }
.increase-icon { background: linear-gradient(135deg, #10b981, #14b8a6); }
.decrease-icon { background: linear-gradient(135deg, #ef4444, #ec4899); }
.what-percent-icon { background: linear-gradient(135deg, #f59e0b, #eab308); }

.card-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.card-content p {
    font-size: 0.875rem;
    color: #cbd5e1;
}
.calculator-interface {
    margin-bottom: 4rem;
}
.calculator-container {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}
.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
}
.calculator-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}
.calculator-header p {
    color: #cbd5e1;
}
.inputs-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.input-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #cbd5e1;
}
.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    color: white;
    font-size: 1rem;
    transition: all 0.2s ease;
}
.input-group input::placeholder {
    color: #94a3b8;
}
.input-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.formula-display {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
}
.formula-label {
    font-size: 0.875rem;
    color: #94a3b8;
    margin-bottom: 0.25rem;
}
.formula-text {
    color: white;
    font-family: 'Courier New', monospace;
}
.result-display {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}
.result-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}
.result-display * {
    position: relative;
    z-index: 1;
}
.result-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}
.result-value {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}
.copy-button {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 1.25rem;
}
.copy-button:hover {
    background: rgba(255, 255, 255, 0.3);
}
.copy-message {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.5rem;
    animation: fadeIn 0.3s ease;
}
.reset-button {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.reset-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}
.features {
    margin-bottom: 4rem;
    text-align: center;
}
.features h2 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 2rem;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
}
.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
}
.feature-card p {
    color: #cbd5e1;
}
.seo-content {
    margin-bottom: 4rem;
}
.seo-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    text-align: center;
    margin-bottom: 2rem;
}
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.content-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
}
.content-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.75rem;
}
.content-card p {
    color: #cbd5e1;
    line-height: 1.6;
}
.hidden {
    display: none;
}
/* Header Navigation Styles */
.header-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
/*     position: sticky;
    top: 0;
    z-index: 100; */
    padding: 1rem 0;
}

.header-container {
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    flex-direction: column;
    gap: 4px;
    padding: 0.5rem;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: white;
    border-radius: 1px;
    transition: all 0.3s ease;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.9);
        backdrop-filter: blur(15px);
        flex-direction: column;
        gap: 0;
        padding: 1rem;
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-link {
        padding: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@media (max-width: 768px) {
    .seo-container table {
        margin: 1rem auto;
        font-size: 0.75rem;
    }   
    .seo-container table th,
    .seo-container table td {
        padding: 0.5rem 0.75rem;
    }
    .main-title {
        font-size: 2.5rem;
    }
    .subtitle {
        font-size: 1rem;
    }
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    .calculator-container {
        padding: 1.5rem;
    }
    .result-value {
        font-size: 1.5rem;
    }
}
@media (max-width: 480px) {
    .seo-container table {
        font-size: 0.7rem;
    }   
    .seo-container table th,
    .seo-container table td {
        padding: 0.5rem;
    }
    .container {
        padding: 0 0.5rem;
    }
    .main-title {
        font-size: 2rem;
    }
    .calculator-container {
        padding: 1rem;
    }
}