/* ===== TESLABLOG.EU — Minimal B&W Theme ===== */

:root {
  --black: #000;
  --white: #fff;
  --gray-100: #f5f5f5;
  --gray-200: #e8e8e8;
  --gray-400: #999;
  --gray-600: #555;
  --gray-800: #222;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  --max-w: 720px;
  --max-w-wide: 1040px;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--black);
  background: var(--white);
}

a { color: var(--black); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--gray-600); }

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

/* ===== HEADER ===== */
header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-family: var(--font);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--black);
  text-decoration: none;
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.nav-logo:hover { color: var(--gray-600); }
.nav-logo span { font-weight: 400; }

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}
.nav-links a {
  color: var(--gray-600);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--black);
}

.nav-langs {
  display: flex;
  gap: 6px;
  align-items: center;
}
.nav-langs a {
  font-size: 1rem;
  opacity: 0.4;
  text-decoration: none;
  transition: opacity 0.15s;
}
.nav-langs a:hover, .nav-langs a.active { opacity: 1; }

/* ===== BREADCRUMB ===== */
.breadcrumb {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.8rem;
  color: var(--gray-400);
}
.breadcrumb a {
  color: var(--gray-400);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--black); }
.breadcrumb .sep { margin: 0 6px; }

/* ===== MAIN CONTAINER ===== */
main {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ===== HOMEPAGE ===== */
.site-intro {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 48px 24px 32px;
  border-bottom: 1px solid var(--gray-200);
}
.site-intro h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--black);
  margin-bottom: 10px;
}
.site-intro .lead {
  font-size: 1rem;
  color: var(--gray-600);
  max-width: 600px;
}

/* Also works as hero-section alias */
.hero-section {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 48px 24px 32px;
  border-bottom: 1px solid var(--gray-200);
}
.hero-section h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--black);
  margin-bottom: 10px;
}
.hero-section .lead {
  font-size: 1rem;
  color: var(--gray-600);
  max-width: 600px;
}

/* ===== ARTICLE LIST (blog homepage style) ===== */
.article-list-home {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px;
}
.list-section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-400);
  padding: 24px 0 12px;
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 0;
}

.post-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
}
.post-item-date {
  font-size: 0.78rem;
  color: var(--gray-400);
  padding-top: 3px;
  white-space: nowrap;
}
.post-item-body {}
.post-item-tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.post-item h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  color: var(--black);
}
.post-item h2 a {
  color: var(--black);
  text-decoration: none;
}
.post-item h2 a:hover { text-decoration: underline; }
.post-item p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 0;
}
.read-more {
  font-size: 0.85rem;
  color: var(--gray-600);
  text-decoration: none;
}
.read-more:hover { color: var(--black); text-decoration: underline; }

/* ===== CARD GRID (old homepage, kept for compat) ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px 48px;
  background: var(--gray-200);
  border-top: 1px solid var(--gray-200);
}
.post-card {
  background: var(--white);
  overflow: hidden;
  padding: 28px;
}
.post-card:hover { background: var(--gray-100); }
.post-card-img {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
  height: auto;
  background: none;
  color: var(--black);
}
.post-card-body {}
.post-card-meta {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.post-card-body h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.35;
  margin-bottom: 10px;
  color: var(--black);
}
.post-card-body h2 a {
  color: var(--black);
  text-decoration: none;
}
.post-card-body h2 a:hover { text-decoration: underline; }
.post-card-body p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 12px;
}

/* ===== ARTICLE PAGE ===== */
.article-header {
  max-width: var(--max-w);
  margin: 40px auto 28px;
  padding: 0 24px;
}
.article-header .category-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--gray-400);
  margin-bottom: 12px;
  text-decoration: none;
}
.article-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1.25;
  color: var(--black);
  margin-bottom: 14px;
}
.article-header .article-meta {
  font-size: 0.82rem;
  color: var(--gray-400);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.article-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 60px;
}
.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  margin: 44px 0 14px;
  color: var(--black);
  line-height: 1.3;
}
.article-content h3 {
  font-size: 1.1rem;
  margin: 32px 0 10px;
  color: var(--black);
  font-weight: 700;
}
.article-content p {
  margin-bottom: 18px;
  color: var(--black);
}
.article-content ul, .article-content ol {
  margin: 0 0 18px 24px;
  color: var(--black);
}
.article-content li { margin-bottom: 6px; }
.article-content a {
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-content a:hover { color: var(--gray-600); }

/* ===== TABLE OF CONTENTS ===== */
.toc {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: 20px 24px;
  margin-bottom: 32px;
}
.toc-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-400);
  margin-bottom: 10px;
}
.toc ol {
  list-style: decimal;
  margin: 0 0 0 20px;
  padding: 0;
}
.toc li {
  margin-bottom: 5px;
  font-size: 0.9rem;
  line-height: 1.5;
}
.toc a {
  color: var(--black);
  text-decoration: none;
}
.toc a:hover { text-decoration: underline; }

/* ===== STEP LIST ===== */
.step-list { margin: 28px 0; }
.step-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-200);
}
.step-item:last-child { border-bottom: none; }
.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--black);
  font-family: var(--font-serif);
}
.step-body h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--black);
  font-weight: 700;
}
.step-body p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
}
.steps-cta {
  text-align: center;
  margin: 28px 0;
}

/* ===== SECTION ===== */
.section { padding: 40px 0; }
.section-header { margin-bottom: 28px; }
.section-header h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 6px;
  color: var(--black);
}
.section-header p {
  color: var(--gray-600);
  font-size: 0.92rem;
}
.section-note {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 16px;
}

/* ===== CARDS ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
  margin-bottom: 16px;
}
.card-grid-3 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.card {
  background: var(--white);
  padding: 20px;
}
.card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--black);
  font-weight: 700;
}
.card p {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.6;
}
.benefit-tag {
  display: inline-block;
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  padding: 2px 8px;
  margin-bottom: 10px;
}
.country-flag { font-size: 1.4rem; display: block; margin-bottom: 6px; }
.amount {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-serif);
  margin-bottom: 6px;
}
.text-link { color: var(--black); text-decoration: underline; }
.text-link:hover { color: var(--gray-600); }

/* ===== FAQ ===== */
.faq-list { max-width: var(--max-w); }
.faq-item { border-bottom: 1px solid var(--gray-200); }
.faq-question {
  padding: 16px 0;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--black);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--gray-400);
  flex-shrink: 0;
  margin-left: 14px;
}
details[open] .faq-question::after { content: '−'; }
.faq-answer {
  padding: 0 0 16px;
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== REFERRAL HERO ===== */
.ref-hero {
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  padding: 40px 24px;
}
.ref-hero-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 40px;
}
.ref-hero h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  line-height: 1.25;
  color: var(--black);
  margin-bottom: 12px;
}
.ref-hero .lead {
  font-size: 0.98rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 8px;
}
.ref-hero-code {
  flex-shrink: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 24px 32px;
  text-align: center;
  min-width: 200px;
}
.code-label {
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--gray-400);
  display: block;
  margin-bottom: 8px;
}
.code-val {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Courier New', monospace;
  color: var(--black);
  cursor: pointer;
  display: block;
  margin: 4px 0 6px;
  letter-spacing: 1px;
}
.code-val:hover { color: var(--gray-600); }

/* ===== PAGE HEADER ===== */
.page-header {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 28px;
  border-bottom: 1px solid var(--gray-200);
}
.page-header .label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-400);
  margin-bottom: 10px;
}
.page-header h1 {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  color: var(--black);
  margin-bottom: 8px;
}
.page-header .lead {
  font-size: 0.95rem;
  color: var(--gray-600);
}

/* ===== BLOG LAYOUT ===== */
.layout-cols {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  padding: 32px 0 60px;
}
.main-col {}
.list-heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-400);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-200);
}
.article-list {}
.article-card {
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
}
.article-card .meta {
  display: flex;
  gap: 12px;
  font-size: 0.77rem;
  color: var(--gray-400);
  margin-bottom: 8px;
}
.article-card .tag {
  font-weight: 600;
}
.article-card h2 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--black);
}
.article-card h2 a {
  color: var(--black);
  text-decoration: none;
}
.article-card h2 a:hover { text-decoration: underline; }
.article-card p {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ===== SIDEBAR ===== */
.sidebar {}
.sidebar-widget {
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gray-200);
}
.sidebar-widget:last-child { border-bottom: none; }
.sidebar-widget h3 {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-400);
  margin-bottom: 14px;
}
.referral-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.referral-code-display {
  font-size: 1.2rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Courier New', monospace;
  cursor: pointer;
  letter-spacing: 1px;
  padding: 12px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  text-align: center;
  display: block;
}
.referral-code-display:hover { background: var(--gray-200); }
.copy-feedback {
  font-size: 0.78rem;
  color: var(--gray-600);
  min-height: 1.2em;
  display: block;
}
.referral-note {
  font-size: 0.77rem;
  color: var(--gray-400);
}
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sidebar-links a {
  font-size: 0.88rem;
  color: var(--black);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid var(--gray-200);
}
.sidebar-links a:hover { text-decoration: underline; }

/* ===== AUTHOR BOX ===== */
.author-box {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: 24px;
  margin: 40px 0 20px;
}
.author-avatar {
  width: 48px;
  height: 48px;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  font-family: var(--font-serif);
}
.author-info h4 {
  font-size: 0.95rem;
  margin-bottom: 3px;
  color: var(--black);
}
.author-info .author-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.author-info p {
  font-size: 0.87rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ===== CTA BOXES ===== */
.cta-box {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-left: 3px solid var(--black);
  padding: 24px;
  margin: 32px 0;
}
.cta-box p {
  font-size: 0.92rem;
  color: var(--black);
  margin-bottom: 12px;
}
.info-box {
  background: var(--gray-100);
  border-left: 3px solid var(--gray-600);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.9rem;
  color: var(--black);
}
.tip-box {
  background: var(--gray-100);
  border-left: 3px solid var(--gray-400);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.9rem;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  background: var(--black);
  color: var(--white) !important;
  padding: 12px 28px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
  letter-spacing: 0.2px;
}
.btn-primary:hover {
  background: var(--gray-800);
  color: var(--white) !important;
}
.btn-secondary {
  display: inline-block;
  background: var(--white);
  color: var(--black) !important;
  padding: 10px 24px;
  font-weight: 600;
  font-size: 0.88rem;
  border: 1px solid var(--gray-800);
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.btn-secondary:hover {
  background: var(--black);
  color: var(--white) !important;
}
.btn-copy-small {
  display: inline-block;
  background: var(--white);
  color: var(--black);
  padding: 10px 18px;
  border: 1px solid var(--gray-200);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  margin-left: 8px;
}
.btn-copy-small:hover { border-color: var(--black); }
.btn-copy-small.copied { border-color: var(--black); color: var(--black); }
.btn-referral {
  display: block;
  background: var(--black);
  color: var(--white) !important;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.85rem;
  text-align: center;
  text-decoration: none;
  transition: background 0.15s;
}
.btn-referral:hover { background: var(--gray-800); }
.ref-hero-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== FOOTER CTA ===== */
.footer-cta {
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  padding: 20px 24px;
  text-align: center;
}
.footer-cta p {
  font-size: 0.9rem;
  color: var(--gray-600);
}
.footer-cta code {
  background: var(--gray-200);
  color: var(--black);
  padding: 2px 7px;
  font-size: 0.85rem;
  font-family: 'SF Mono', 'Courier New', monospace;
  font-weight: 700;
}
.footer-cta a {
  color: var(--black);
  font-weight: 600;
}

/* ===== PROMO BANNER (minimal) ===== */
.promo-banner {
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  text-align: center;
  padding: 8px 20px;
  font-size: 0.85rem;
  color: var(--gray-600);
}
.promo-banner a {
  font-weight: 600;
  color: var(--black);
  text-decoration: underline;
}

/* ===== FOOTER ===== */
footer {
  background: var(--black);
  color: var(--gray-400);
  padding: 36px 24px;
}
.footer-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}
.footer-nav a {
  color: #aaa;
  font-size: 0.85rem;
  text-decoration: none;
}
.footer-nav a:hover { color: var(--white); }
.footer-meta {
  font-size: 0.75rem;
  line-height: 1.7;
  color: #555;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .layout-cols { grid-template-columns: 1fr; }
  .sidebar { border-top: 1px solid var(--gray-200); padding-top: 32px; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .site-intro h1, .hero-section h1 { font-size: 1.55rem; }
  .article-header h1 { font-size: 1.55rem; }
  .ref-hero-inner { flex-direction: column; gap: 20px; }
  .ref-hero-code { width: 100%; }
  .step-item { flex-direction: column; gap: 10px; }
  .author-box { flex-direction: column; }
  .card-grid { grid-template-columns: 1fr; }
  .post-item { grid-template-columns: 1fr; gap: 4px; }
  .post-item-date { padding-top: 0; }
  .posts-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .nav-inner { padding: 0 16px; }
  .site-intro, .hero-section { padding: 32px 16px 24px; }
  .article-header { padding: 0 16px; }
  .article-content { padding: 0 16px 40px; }
  main { padding: 0 16px; }
  .article-list-home { padding: 0 16px; }
  .ref-hero { padding: 28px 16px; }
}