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

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

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

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;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

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

/* ---- NAVIGATION ---- */
.site-nav {
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}

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

.nav-logo {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

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

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

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

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  padding: var(--spacing-base) var(--spacing-xl);
  gap: var(--spacing-base);
}

.nav-mobile.open { display: flex; }
.nav-mobile a { font-size: 15px; font-weight: 500; color: var(--color-body); }
.nav-mobile a:hover { color: var(--color-ink); }

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

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

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

.hero h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}

.hero-desc {
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-body);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}

.hero-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
}

.hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

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

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

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

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

/* ---- SECTION HEADERS ---- */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
}

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

.section-subtitle {
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-body);
  max-width: 560px;
}

/* ---- ARTICLES GRID ---- */
.articles-section {
  padding: var(--spacing-section) 0;
  border-top: 1px solid var(--color-hairline);
}

.articles-header {
  margin-bottom: var(--spacing-xxl);
}

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

.article-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  transition: border-color 0.15s;
}

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

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

.article-card-body {
  padding: var(--spacing-lg);
}

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

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

.article-card p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-base);
}

.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.article-card-link:hover { color: var(--color-primary-active); }

/* ---- TOPICS SECTION ---- */
.topics-section {
  padding: var(--spacing-section) 0;
  background: var(--color-surface-card);
  border-top: 1px solid var(--color-hairline);
  border-bottom: 1px solid var(--color-hairline);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

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

.topic-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

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

/* ---- CONTACT SECTION ---- */
.contact-section {
  padding: var(--spacing-section) 0;
  border-top: 1px solid var(--color-hairline);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.contact-info h2 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--color-ink);
  margin-bottom: var(--spacing-base);
}

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

.contact-detail {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}

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

.form-group {
  margin-bottom: var(--spacing-base);
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 6px;
}

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

.form-group textarea {
  height: auto;
  min-height: 100px;
  resize: vertical;
}

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

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

.form-error {
  font-size: 13px;
  color: var(--color-semantic-error);
  margin-top: 4px;
  display: none;
}

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

.form-submit-btn {
  width: 100%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 20px;
  height: 44px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.form-submit-btn:hover { background: var(--color-primary-active); }
.form-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

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

.form-message.success {
  display: block;
  background: #e8f5f0;
  color: var(--color-semantic-success);
  border: 1px solid #b8ddd1;
}

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

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  margin-top: var(--spacing-sm);
  max-width: 280px;
}

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

.footer-col ul { display: flex; flex-direction: column; gap: var(--spacing-xs); }

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

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

.footer-bottom {
  max-width: 1200px;
  margin: var(--spacing-xxl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-base);
}

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

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

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

/* ---- COOKIE BANNER ---- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-ink);
  color: var(--color-canvas);
  padding: var(--spacing-base) var(--spacing-xl);
  z-index: 200;
  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-soft);
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
}

.cookie-banner a {
  color: var(--color-primary);
  text-decoration: underline;
}

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

.cookie-btn-accept {
  background: 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;
}

.cookie-btn-reject {
  background: transparent;
  color: var(--color-canvas);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: 1px solid rgba(255,255,255,0.3);
  cursor: pointer;
}

.cookie-banner.hidden { display: none; }

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

.article-hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  margin-top: var(--spacing-xl);
  border: 1px solid var(--color-hairline);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-base);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.article-meta-date {
  font-size: 13px;
  color: var(--color-muted);
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-section) var(--spacing-xl);
}

.article-body h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--color-ink);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

.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-base);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.article-body p {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: var(--spacing-base);
}

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

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 6px;
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
}

.article-body a:hover { color: var(--color-primary-active); }

.article-body blockquote {
  border-left: 3px solid var(--color-hairline-strong);
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  background: var(--color-surface-card);
  border-radius: 0 var(--rounded-md) var(--rounded-md) 0;
}

.article-body blockquote p {
  margin: 0;
  color: var(--color-muted);
  font-style: italic;
}

.info-box {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.info-box h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-box ul { list-style: disc; padding-left: var(--spacing-lg); }
.info-box li { font-size: 14px; color: var(--color-body); line-height: 1.5; margin-bottom: 4px; }

.article-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-base);
  margin-top: var(--spacing-section);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-hairline);
  flex-wrap: wrap;
}

.article-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

/* ---- PAGES (about, privacy, terms) ---- */
.page-hero {
  padding: var(--spacing-section) 0 var(--spacing-xl);
  border-bottom: 1px solid var(--color-hairline);
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1.2px;
  color: var(--color-ink);
  line-height: 1.1;
  margin-bottom: var(--spacing-base);
}

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

.page-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-section) var(--spacing-xl);
}

.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-base);
}

.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: 1.6;
  margin-bottom: var(--spacing-base);
}

.page-body ul { list-style: disc; padding-left: var(--spacing-xl); margin-bottom: var(--spacing-base); }
.page-body li { font-size: 16px; color: var(--color-body); line-height: 1.6; margin-bottom: 6px; }
.page-body a { color: var(--color-primary); text-decoration: underline; }

/* ---- DISCLAIMER ---- */
.disclaimer {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--color-muted);
  border-radius: var(--rounded-md);
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.5;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 40px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-base); }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; letter-spacing: -0.5px; }
  .hero-image { display: none; }
  .section-title { font-size: 28px; }
  .articles-grid { grid-template-columns: 1fr; }
  .topics-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .article-body { padding: var(--spacing-xl) var(--spacing-base); }
  .page-body { padding: var(--spacing-xl) var(--spacing-base); }
  .article-body h1 { font-size: 28px; }
  .page-hero h1 { font-size: 32px; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero { padding: 48px 0; }
}