/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}

.container--narrow {
    max-width: var(--container-md);
}

.container--medium {
    max-width: var(--container-lg);
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    z-index: 1000;
    font-weight: var(--weight-semibold);
    text-decoration: none;
}

.skip-link:focus {
    top: var(--space-md);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 4rem;
}

.site-logo {
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.site-logo:hover {
    color: var(--color-primary);
}

.nav-list {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    position: relative;
    padding: var(--space-sm) 0;
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: var(--weight-medium);
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
    color: var(--color-primary);
}

.nav-link[aria-current="page"]::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

/* Hamburger menu */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    color: var(--color-text);
}

.nav-toggle svg {
    width: 1.5rem;
    height: 1.5rem;
}

.nav-toggle .icon-close {
    display: none;
}

.nav-toggle[aria-expanded="true"] .icon-open {
    display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
    display: block;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        display: none;
    }

    .site-nav.is-open {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: var(--space-md);
    }

    .nav-link {
        display: block;
        padding: var(--space-md);
        border-radius: var(--radius-md);
    }

    .nav-link:hover {
        background: var(--color-bg-alt);
    }

    .nav-link[aria-current="page"]::after {
        display: none;
    }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    margin-top: auto;
    padding: var(--space-3xl) 0 var(--space-xl);
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-2xl);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

.footer-brand p {
    margin-top: var(--space-sm);
    color: var(--color-text-muted);
    max-width: 30ch;
}

.footer-heading {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-copy {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* Theme toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    width: 2.5rem;
    height: 2.5rem;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    color: var(--color-text);
}

.theme-toggle:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-primary);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-xl);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
    line-height: var(--leading-tight);
}

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

.btn:active {
    transform: translateY(0);
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}

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

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--lg {
    padding: var(--space-md) var(--space-2xl);
    font-size: var(--text-lg);
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
    padding: var(--space-4xl) 0;
}

.section--alt {
    background: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    max-width: var(--container-md);
    margin-inline: auto;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-md);
}

.section-header p {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
    padding: var(--space-5xl) 0 var(--space-4xl);
    text-align: center;
}

.hero h1 {
    font-size: var(--text-4xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero p {
    font-size: var(--text-xl);
    color: var(--color-text-muted);
    max-width: 40ch;
    margin-inline: auto;
    margin-bottom: var(--space-2xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
    gap: var(--space-xl);
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: color-mix(in srgb, var(--color-primary) 10%, transparent);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
}

.card h3 {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-sm);
}

.card p {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.card-link {
    display: inline-block;
    margin-top: var(--space-md);
    font-weight: var(--weight-medium);
    text-decoration: none;
    color: var(--color-primary);
    transition: gap var(--transition-fast);
}

.card-link::after {
    content: ' →';
}

.card-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
    gap: var(--space-xl);
}

.testimonial {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.testimonial blockquote {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: var(--space-lg);
    line-height: var(--leading-normal);
}

.testimonial blockquote::before {
    content: '\201C';
    font-size: var(--text-3xl);
    color: var(--color-primary);
    line-height: 0;
    vertical-align: -0.4em;
    margin-right: 0.1em;
}

.testimonial-author {
    font-weight: var(--weight-semibold);
    font-size: var(--text-sm);
}

.testimonial-role {
    color: var(--color-text-muted);
    font-size: var(--text-xs);
}

/* ==========================================================================
   CTA Banner
   ========================================================================== */

.cta-banner {
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
}

.cta-banner h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-md);
}

.cta-banner p {
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    max-width: 40ch;
    margin-inline: auto;
}

.cta-banner .btn {
    background: #fff;
    color: var(--color-primary);
}

.cta-banner .btn:hover {
    background: var(--color-bg-alt);
}

/* ==========================================================================
   About Page — Stats
   ========================================================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
    gap: var(--space-xl);
    text-align: center;
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* ==========================================================================
   About Page — Content
   ========================================================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }
}

.about-text h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-lg);
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.about-image {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    border: 2px dashed var(--color-border);
    font-size: var(--text-sm);
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 24rem;
    gap: var(--space-3xl);
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: var(--weight-medium);
    font-size: var(--text-sm);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);
}

.form-input.is-invalid,
.form-textarea.is-invalid {
    border-color: var(--color-error);
}

.form-textarea {
    min-height: 10rem;
    resize: vertical;
}

.form-error {
    color: var(--color-error);
    font-size: var(--text-xs);
    margin-top: var(--space-xs);
    display: none;
}

.form-error.is-visible {
    display: block;
}

.form-status {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-weight: var(--weight-medium);
}

.form-status--success {
    background: color-mix(in srgb, var(--color-success) 10%, transparent);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.form-status--error {
    background: color-mix(in srgb, var(--color-error) 10%, transparent);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* Honeypot */
.form-hp {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

/* Contact sidebar */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-info-item h3 {
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-xs);
}

.contact-info-item p,
.contact-info-item a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
}

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

/* ==========================================================================
   Page Header (inner pages)
   ========================================================================== */

.page-header {
    padding: var(--space-3xl) 0 var(--space-2xl);
    text-align: center;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-sm);
}

.page-header p {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */

.animate {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Focus Styles
   ========================================================================== */

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Utility
   ========================================================================== */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center {
    text-align: center;
}

/* ==========================================================================
   Print
   ========================================================================== */

@media print {
    .site-header,
    .site-footer,
    .theme-toggle,
    .nav-toggle,
    .cta-banner,
    .hero-actions {
        display: none !important;
    }

    body {
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }
}