* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --trust-blue: #4A7BA7;
    --golden: #E8A84B;
    --deep-purple: #3D2B6B;
    --vibrant-green: #4ADE80;
    --accent-orange: #F97316;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --dark-text: #1f2937;
    --gray-text: #6b7280;
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background-color: var(--light-bg);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background-color: var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
}

.site-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--trust-blue);
    margin: 0;
}

.site-subtitle {
    font-size: 0.75rem;
    color: var(--gray-text);
    margin: 0;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--gray-text);
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: var(--trust-blue);
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f0f4f8 0%, #e0e7f1 100%);
    padding: 4rem 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.card-label {
    font-size: 0.875rem;
    color: var(--gray-text);
    margin-bottom: 0.5rem;
}

.card-amount {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--trust-blue);
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-text h2 {
        font-size: 1.875rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--trust-blue);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #3a6a96;
    box-shadow: 0 4px 12px rgba(74, 123, 167, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--trust-blue);
    border: 2px solid var(--trust-blue);
}

.btn-secondary:hover {
    background-color: rgba(74, 123, 167, 0.05);
}

.btn-full {
    width: 100%;
}

/* Checker Section */
.checker-section {
    background-color: var(--white);
    padding: 4rem 0;
}

.checker-section h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

.checker-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-text);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: 'Roboto Mono', monospace;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--trust-blue);
}

.result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 0.5rem;
    display: flex;
    gap: 1rem;
}

.result-box.success {
    background-color: rgba(74, 222, 128, 0.1);
    border: 2px solid var(--vibrant-green);
}

.result-box.error {
    background-color: rgba(249, 115, 22, 0.1);
    border: 2px solid var(--accent-orange);
}

/* Features Section */
.features {
    background: linear-gradient(135deg, rgba(74, 123, 167, 0.05) 0%, rgba(232, 168, 75, 0.05) 100%);
    padding: 4rem 0;
}

.features h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.3s ease;
}

.feature-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--gray-text);
    font-size: 0.875rem;
}

/* Blog Section */
.blog-section {
    background-color: var(--white);
    padding: 4rem 0;
}

.blog-section h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.blog-card {
    background: var(--white);
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.blog-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.blog-image {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, rgba(74, 123, 167, 0.2) 0%, rgba(232, 168, 75, 0.2) 100%);
}

.blog-card h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    padding: 1rem 1rem 0.5rem;
    line-height: 1.3;
}

.blog-card p {
    padding: 0 1rem;
    color: var(--gray-text);
    font-size: 0.875rem;
}

.blog-date {
    padding: 0.5rem 1rem 1rem !important;
    color: #999;
    font-size: 0.75rem !important;
}

/* Footer */
.footer {
    background-color: var(--deep-purple);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h5 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .hero-text h2 {
        font-size: 1.75rem;
    }
    
    .features-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
}