/* ===== DebiFlow Shared Styles ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #ffffff;
  --color-surface: #f8f9fa;
  --color-surface-alt: #f0f2f5;
  --color-border: #e2e5e9;
  --color-text: #1a1a2e;
  --color-text-muted: #5a6070;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-accent: #10b981;
  --color-accent-light: #ecfdf5;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --container: 1120px;
  --nav-height: 64px;
}

[data-theme="dark"] {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-alt: #232733;
  --color-border: #2d3344;
  --color-text: #e8eaed;
  --color-text-muted: #9aa0b0;
  --color-primary: #60a5fa;
  --color-primary-hover: #93c5fd;
  --color-primary-light: #1e293b;
  --color-accent: #34d399;
  --color-accent-light: #1a2e2a;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-lg); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
  display: flex; align-items: center;
}
.nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo { font-weight: 700; font-size: var(--text-xl); color: var(--color-text); text-decoration: none; }
.nav-logo span { color: var(--color-primary); }
.nav-links { display: flex; gap: var(--space-lg); align-items: center; list-style: none; }
.nav-links a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--color-primary); }
.nav-cta { background: var(--color-primary); color: #fff !important; padding: 0.5rem 1rem; border-radius: var(--radius-sm); font-size: var(--text-sm); }
.nav-cta:hover { background: var(--color-primary-hover); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle svg { width: 24px; height: 24px; stroke: var(--color-text); }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.5rem; border-radius: var(--radius-sm);
  font-weight: 600; font-size: var(--text-sm); text-decoration: none;
  transition: all 0.2s; border: none; cursor: pointer;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-surface-alt); }

/* PAGE HEADER */
.page-header { padding: var(--space-3xl) 0 var(--space-xl); }
.page-header h1 { font-size: var(--text-4xl); font-weight: 700; line-height: 1.2; margin-bottom: var(--space-md); }
.page-header p { color: var(--color-text-muted); font-size: var(--text-lg); max-width: 640px; }

/* BREADCRUMB */
.breadcrumb { padding: var(--space-md) 0 0; font-size: var(--text-sm); color: var(--color-text-muted); }
.breadcrumb a { color: var(--color-primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* SECTIONS */
.section { padding: var(--space-3xl) 0; }
.section h2 { font-size: var(--text-3xl); font-weight: 700; margin-bottom: var(--space-lg); }
.section h3 { font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-sm); }
.section p { color: var(--color-text-muted); margin-bottom: var(--space-md); line-height: 1.7; }

/* CARDS */
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  margin-bottom: var(--space-lg);
}
.card h3 { font-size: var(--text-xl); margin-bottom: var(--space-sm); color: var(--color-text); }
.card p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* FEATURE LIST */
.feature-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-sm); margin: var(--space-lg) 0; }
.feature-list li { display: flex; align-items: flex-start; gap: var(--space-sm); font-size: var(--text-sm); }
.feature-list li::before { content: "✓"; color: var(--color-accent); font-weight: 700; flex-shrink: 0; }

/* FAQ */
.faq-grid { display: flex; flex-direction: column; gap: var(--space-md); max-width: 800px; }
.faq-item {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden;
}
.faq-question {
  padding: var(--space-lg); cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; font-weight: 600; font-size: var(--text-base);
  background: none; border: none; width: 100%; text-align: left; color: var(--color-text);
}
.faq-question::after { content: "+"; font-size: var(--text-xl); color: var(--color-primary); transition: transform 0.2s; }
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer { padding: 0 var(--space-lg) var(--space-lg); color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.7; display: none; }
.faq-item.open .faq-answer { display: block; }

/* PRICING TABLE */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-lg); }
.pricing-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  display: flex; flex-direction: column;
}
.pricing-card.featured { border-color: var(--color-primary); position: relative; }
.pricing-card.featured::before { content: "Populair"; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--color-primary); color: #fff; font-size: var(--text-xs); font-weight: 600; padding: 0.3rem 0.8rem; border-radius: 20px; }
.pricing-card h3 { font-size: var(--text-xl); margin-bottom: var(--space-xs); }
.pricing-card .price { font-size: var(--text-3xl); font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-xs); }
.pricing-card .price-note { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-lg); }

/* CTA STRIP */
.cta-strip {
  background: var(--color-primary-light); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
  margin: var(--space-2xl) 0;
}
.cta-strip strong { font-size: var(--text-lg); }
.cta-strip p { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 0.3rem; }

/* CONTENT ARTICLE */
.article-content { max-width: 720px; }
.article-content h2 { margin-top: var(--space-2xl); }
.article-content h3 { margin-top: var(--space-xl); }
.article-content ul, .article-content ol { margin: var(--space-md) 0; padding-left: var(--space-lg); }
.article-content li { margin-bottom: var(--space-xs); font-size: var(--text-sm); color: var(--color-text-muted); }
.article-content table { width: 100%; border-collapse: collapse; margin: var(--space-lg) 0; font-size: var(--text-sm); }
.article-content th, .article-content td { padding: var(--space-sm) var(--space-md); border: 1px solid var(--color-border); text-align: left; }
.article-content th { background: var(--color-surface); font-weight: 600; }

/* FOOTER */
.footer {
  border-top: 1px solid var(--color-border); padding: var(--space-xl) 0;
  font-size: var(--text-sm); color: var(--color-text-muted);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-xl); margin-bottom: var(--space-xl); }
.footer h4 { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-md); }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-xs); }
.footer ul a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); }
.footer ul a:hover { color: var(--color-primary); }
.footer-bottom { border-top: 1px solid var(--color-border); padding-top: var(--space-lg); text-align: center; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .page-header h1 { font-size: var(--text-3xl); }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-border); padding: var(--space-lg); gap: var(--space-md); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .cta-strip { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}