@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
    --color-canvas: #f7f7f4;
    --color-canvas-soft: #fafaf7;
    --color-surface-card: #ffffff;
    --color-surface-strong: #e6e5e0;
    --color-primary: #f54e00;
    --color-primary-active: #d04200;
    --color-ink: #26251e;
    --color-body: #5a5852;
    --color-body-strong: #26251e;
    --color-muted: #807d72;
    --color-muted-soft: #a09c92;
    --color-on-primary: #ffffff;
    --color-hairline: #e6e5e0;
    --color-hairline-soft: #efeee8;
    --color-hairline-strong: #cfcdc4;
    --color-semantic-success: #1f8a65;
    --color-semantic-error: #cf2d56;

    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;

    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-canvas);
    color: var(--color-body);
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* TOP NAV */
.site-nav {
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.3px;
}

.nav-logo span {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-body);
    line-height: 1.4;
    transition: color 0.15s ease;
}

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

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

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-ink);
    transition: all 0.2s ease;
}

.nav-mobile {
    display: none;
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}

.nav-mobile.open {
    display: block;
}

.nav-mobile ul {
    list-style: none;
    padding: var(--spacing-base) var(--spacing-xl);
}

.nav-mobile ul li a {
    display: block;
    padding: var(--spacing-sm) 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-body);
    border-bottom: 1px solid var(--color-hairline-soft);
}

/* HERO */
.hero {
    padding: var(--spacing-section) 0;
    background-color: var(--color-canvas);
}

.hero-inner {
    max-width: 720px;
}

.hero-label {
    display: inline-block;
    background-color: var(--color-surface-strong);
    color: var(--color-ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    margin-bottom: var(--spacing-lg);
}

.hero h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

.hero p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

/* SECTIONS */
.section {
    padding: var(--spacing-section) 0;
}

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

.section-intro {
    font-size: 16px;
    color: var(--color-body);
    max-width: 640px;
    line-height: 1.5;
    margin-bottom: var(--spacing-xxl);
}

.section-divider {
    border: none;
    border-top: 1px solid var(--color-hairline);
    margin: 0;
}

/* CARDS */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    line-height: 1.4;
}

.feature-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

/* ARTICLE CARD */
.article-card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s ease;
}

.article-card:hover {
    border-color: var(--color-hairline-strong);
}

.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-card-body {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.article-card-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
}

.article-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    line-height: 1.4;
}

.article-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    flex: 1;
}

.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

/* ARTICLE PAGE */
.article-header {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline);
    margin-bottom: var(--spacing-section);
}

.article-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    line-height: 1.15;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
    max-width: 760px;
}

.article-header p.lead {
    font-size: 18px;
    color: var(--color-body);
    max-width: 640px;
    line-height: 1.6;
}

.article-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-lg);
}

.article-body {
    max-width: 720px;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    line-height: 1.25;
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
}

.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    line-height: 1.4;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-body p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-base);
}

.article-body ul, .article-body ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-base);
}

.article-body li {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
}

.article-body a {
    color: var(--color-ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-img-full {
    width: 100%;
    border-radius: var(--rounded-lg);
    margin: var(--spacing-xxl) 0;
    border: 1px solid var(--color-hairline);
}

.article-img-caption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: calc(-1 * var(--spacing-xl));
    margin-bottom: var(--spacing-xxl);
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-xxl);
    align-items: start;
    padding-bottom: var(--spacing-section);
}

.article-sidebar {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
}

.sidebar-card h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}

.sidebar-card ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-card ul li a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.4;
    transition: color 0.15s ease;
}

.sidebar-card ul li a:hover {
    color: var(--color-ink);
}

/* INFOBOX */
.infobox {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-left: 3px solid var(--color-ink);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xxl) 0;
}

.infobox h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.infobox p, .infobox li {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.infobox ul {
    padding-left: var(--spacing-base);
}

/* CODE / MONO */
code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-xs);
    padding: 2px 6px;
    color: var(--color-ink);
}

/* FORM */
.contact-form {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xl);
    max-width: 560px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
}

.form-group input,
.form-group textarea {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 16px;
    font-family: inherit;
    color: var(--color-ink);
    outline: none;
    transition: border-color 0.15s ease;
    width: 100%;
}

.form-group textarea {
    height: auto;
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-ink);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-muted-soft);
}

.form-message {
    font-size: 14px;
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--rounded-md);
    margin-top: var(--spacing-md);
    display: none;
}

.form-message.success {
    background-color: #e8f5f0;
    color: var(--color-semantic-success);
    border: 1px solid #b8ddd0;
    display: block;
}

.form-message.error {
    background-color: #fdeef1;
    color: var(--color-semantic-error);
    border: 1px solid #f0b8c2;
    display: block;
}

/* BUTTONS */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    transition: background-color 0.15s ease;
    white-space: nowrap;
}

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

.btn-secondary {
    background-color: var(--color-surface-card);
    color: var(--color-ink);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--color-hairline-strong);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    transition: border-color 0.15s ease;
}

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

/* FOOTER */
.site-footer {
    background-color: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: 64px 0 48px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    max-width: 240px;
    margin-top: var(--spacing-sm);
}

.footer-col h5 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    transition: color 0.15s ease;
}

.footer-col ul li a:hover {
    color: var(--color-ink);
}

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

.footer-bottom p {
    font-size: 13px;
    color: var(--color-muted);
}

.footer-bottom a {
    color: var(--color-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* PAGE HEADER */
.page-header {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline);
}

.page-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.page-header p {
    font-size: 16px;
    color: var(--color-body);
    max-width: 600px;
    line-height: 1.5;
}

/* STATIC PAGES CONTENT */
.page-body {
    max-width: 720px;
    padding: var(--spacing-section) 0;
}

.page-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
}

.page-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.page-body p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-base);
}

.page-body ul, .page-body ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-base);
}

.page-body li {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-xs);
}

.page-body a {
    color: var(--color-ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-ink);
    color: var(--color-canvas);
    padding: var(--spacing-lg) var(--spacing-xl);
    z-index: 999;
    display: none;
}

.cookie-banner.visible {
    display: block;
}

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.cookie-banner p {
    font-size: 14px;
    color: var(--color-canvas);
    line-height: 1.5;
    flex: 1;
}

.cookie-banner p a {
    color: var(--color-canvas);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.btn-cookie-accept {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.btn-cookie-accept:hover {
    background-color: var(--color-primary-active);
}

.btn-cookie-reject {
    background-color: transparent;
    color: var(--color-canvas);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--rounded-md);
    border: 1px solid rgba(247, 247, 244, 0.3);
    cursor: pointer;
    transition: border-color 0.15s ease;
}

.btn-cookie-reject:hover {
    border-color: rgba(247, 247, 244, 0.6);
}

/* DISCLAIMER */
.disclaimer-bar {
    background-color: var(--color-surface-strong);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-hairline);
}

.disclaimer-bar p {
    font-size: 12px;
    color: var(--color-muted);
    text-align: center;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 56px;
        letter-spacing: -1.4px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-base);
    }

    .nav-links {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .hero {
        padding: var(--spacing-xxl) 0;
    }

    .hero h1 {
        font-size: 36px;
        letter-spacing: -0.72px;
    }

    .section {
        padding: var(--spacing-xxl) 0;
    }

    .section-title {
        font-size: 28px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .card-grid-2 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .article-header h1 {
        font-size: 32px;
        letter-spacing: -0.5px;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .cookie-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .article-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* BREADCRUMB */
.breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.breadcrumb a {
    color: var(--color-muted);
    transition: color 0.15s ease;
}

.breadcrumb a:hover {
    color: var(--color-ink);
}

.breadcrumb-sep {
    color: var(--color-muted-soft);
}

/* UPDATED TAG */
.updated-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    background-color: var(--color-surface-strong);
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    display: inline-block;
}

/* ABOUT GRID */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

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