/* ===== CSS Variables & Reset ===== */
:root {
    /* Colors - Clean, professional palette */
    --color-white: #ffffff;
    --color-off-white: #f8f9fa;
    --color-light-gray: #e9ecef;
    --color-gray: #6c757d;
    --color-dark-gray: #495057;
    --color-charcoal: #212529;
    --color-black: #0d1117;

    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    --space-3xl: 7rem;

    /* Typography */
    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-charcoal);
    background-color: var(--color-white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

ul {
    list-style: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-family);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-black);
}

.btn-secondary {
    background: transparent;
    color: var(--color-charcoal);
    border: 1px solid var(--color-light-gray);
}

.btn-secondary:hover {
    border-color: var(--color-charcoal);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-light-gray);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.logo {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-charcoal);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gray);
}

.nav-links a:hover {
    color: var(--color-charcoal);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--color-charcoal);
    transition: all 0.2s ease;
}

/* ===== Hero Section ===== */
.hero {
    padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
    background: var(--color-off-white);
}

.hero-content {
    max-width: 680px;
}

.hero-tagline {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-charcoal);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ===== Notice Banner ===== */
.notice {
    background: var(--color-charcoal);
    padding: var(--space-sm) 0;
}

.notice-content {
    text-align: center;
    color: var(--color-white);
    font-size: 0.9375rem;
}

/* ===== Section Styles ===== */
.section-header {
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.section-header p {
    color: var(--color-gray);
    font-size: 1.0625rem;
}

/* ===== Services Section ===== */
.services {
    padding: var(--space-3xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.service-card {
    padding: var(--space-lg);
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.service-card:hover {
    background: var(--color-light-gray);
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.service-card p {
    color: var(--color-gray);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.services-note {
    text-align: center;
    margin-top: var(--space-xl);
    color: var(--color-gray);
}

.services-note a {
    color: var(--color-primary);
    font-weight: 500;
}

.services-note a:hover {
    text-decoration: underline;
}

/* ===== Testimonials Section ===== */
.testimonials {
    padding: var(--space-3xl) 0;
    background: var(--color-off-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.testimonial-card {
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-light-gray);
}

.testimonial-stars {
    color: #f59e0b;
    font-size: 0.875rem;
    letter-spacing: 2px;
    margin-bottom: var(--space-sm);
}

.testimonial-text {
    color: var(--color-dark-gray);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.author-name {
    font-weight: 600;
    color: var(--color-charcoal);
    font-size: 0.9375rem;
}

.author-location {
    color: var(--color-gray);
    font-size: 0.8125rem;
}

/* ===== About Section ===== */
.about {
    padding: var(--space-3xl) 0;
    background: var(--color-off-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.about-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-bottom: var(--space-md);
}

.about-text>p {
    color: var(--color-gray);
    font-size: 1.0625rem;
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.features-list li {
    position: relative;
    padding-left: var(--space-md);
    color: var(--color-dark-gray);
}

.features-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

.about-highlights {
    display: flex;
    gap: var(--space-lg);
}

.highlight {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    min-width: 140px;
}

.highlight-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-charcoal);
}

.highlight-label {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-top: var(--space-xs);
}

/* ===== Contact Section ===== */
.contact {
    padding: var(--space-3xl) 0;
}

.contact-content {
    max-width: 600px;
}

.contact-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-bottom: var(--space-sm);
}

.contact-info>p {
    color: var(--color-gray);
    font-size: 1.0625rem;
    margin-bottom: var(--space-lg);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 1.0625rem;
    color: var(--color-charcoal);
    font-weight: 500;
}

a.contact-value:hover {
    color: var(--color-primary);
}

.contact-reminder {
    padding: var(--space-md);
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    color: var(--color-dark-gray);
    font-size: 0.9375rem;
}

/* ===== Footer ===== */
.footer {
    padding: var(--space-xl) 0;
    background: var(--color-off-white);
    border-top: 1px solid var(--color-light-gray);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.footer-brand {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-charcoal);
}

.footer-nav {
    display: flex;
    gap: var(--space-lg);
}

.footer-nav a {
    font-size: 0.875rem;
    color: var(--color-gray);
}

.footer-nav a:hover {
    color: var(--color-charcoal);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--color-gray);
}

/* ===== Responsive Design ===== */
@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1.5fr 1fr;
        align-items: start;
    }

    .about-highlights {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 57px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-white);
        padding: var(--space-lg);
        gap: var(--space-md);
        border-bottom: 1px solid var(--color-light-gray);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.2s ease;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .about-highlights {
        flex-direction: row;
    }

    .highlight {
        flex: 1;
        min-width: auto;
    }
}

/* ===== Page Header (for subpages) ===== */
.page-header {
    padding: calc(80px + var(--space-xl)) 0 var(--space-xl);
    background: var(--color-off-white);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.page-header p {
    color: var(--color-gray);
    font-size: 1.0625rem;
}

/* ===== Blog Listing ===== */
.blog-listing {
    padding: var(--space-3xl) 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.blog-card {
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.blog-card:hover {
    background: var(--color-light-gray);
}

.blog-card-content {
    padding: var(--space-lg);
}

.blog-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.blog-card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.blog-card h2 a {
    color: inherit;
}

.blog-card h2 a:hover {
    color: var(--color-primary);
}

.blog-card p {
    color: var(--color-gray);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.blog-read-more {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
}

.blog-read-more:hover {
    text-decoration: underline;
}

/* ===== Blog CTA ===== */
.blog-cta {
    padding: var(--space-xl) 0 var(--space-3xl);
}

.cta-box {
    padding: var(--space-xl);
    background: var(--color-off-white);
    border-radius: var(--radius-lg);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-bottom: var(--space-sm);
}

.cta-box p {
    color: var(--color-gray);
    margin-bottom: var(--space-lg);
}

/* ===== Blog Article ===== */
.blog-article {
    padding: calc(80px + var(--space-xl)) 0 var(--space-3xl);
}

.blog-article .container {
    max-width: 720px;
}

.article-header {
    margin-bottom: var(--space-xl);
}

.back-link {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--space-md);
}

.back-link:hover {
    color: var(--color-primary);
}

.article-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-charcoal);
    line-height: 1.3;
    margin-bottom: var(--space-xs);
}

.article-meta {
    color: var(--color-gray);
    font-size: 1rem;
}

.article-content {
    color: var(--color-dark-gray);
    font-size: 1.0625rem;
    line-height: 1.8;
}

.article-content h2 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-charcoal);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
}

.article-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-xs);
}

.article-content p {
    margin-bottom: var(--space-md);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.article-content li {
    margin-bottom: var(--space-xs);
}

.article-content code {
    background: var(--color-off-white);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: 'Consolas', 'Monaco', monospace;
}

.article-content strong {
    color: var(--color-charcoal);
}

.article-cta {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-light-gray);
}

/* Active nav link */
.nav-links a.active {
    color: var(--color-charcoal);
}