/* ==========================================================================
   Triviatec — Calcypher Vitrine
   Copyright (c) TRIVIATEC SAS
   ========================================================================== */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-heading: #f1f5f9;
  --border: #334155;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --max-w: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-light); text-decoration: none; }
a:hover { color: var(--accent); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { color: var(--text-heading); line-height: 1.3; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }

.section-title { text-align: center; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-muted); max-width: 700px; margin: 0 auto 48px; font-size: 1.1rem; }

.gradient-text {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
  text-align: center;
}

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

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

.btn-nav {
  padding: 8px 20px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
}
.btn-nav:hover { background: var(--primary-dark); color: #fff; }

/* ---------- Navbar ---------- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s;
  background: transparent;
}
#navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-heading);
}
.logo:hover { color: var(--text-heading); }
.logo-icon { font-size: 1.5rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a { color: var(--text-muted); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--text-heading); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ---------- Brand ---------- */
#brand {
  padding-top: 200px;
  padding-bottom: 100px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 20%, rgba(37, 99, 235, 0.12), transparent 60%),
              radial-gradient(ellipse at 50% 80%, rgba(6, 182, 212, 0.06), transparent 50%);
}
.brand-logo {
  font-size: 4rem;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 24px rgba(37, 99, 235, 0.4));
}
.brand-name {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--text-heading);
  margin: 0 0 12px;
}
.brand-tagline {
  font-size: 1.3rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0;
}
.brand-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 40px auto;
  border-radius: 2px;
}
.brand-product {
  margin-bottom: 20px;
}
.brand-product-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}
.brand-product-name {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-desc {
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}
.brand-cta {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  transition: color 0.2s, transform 0.2s;
  animation: brand-bounce 2s ease-in-out infinite;
}
.brand-cta:hover { color: var(--primary-light); }
@keyframes brand-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ---------- Hero ---------- */
#hero {
  padding: 60px 0 60px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.15), transparent 70%);
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 999px;
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-sub {
  max-width: 650px;
  margin: 24px auto 36px;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.stat { text-align: center; }
.stat-value { display: block; font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* ---------- Features Grid ---------- */
#product { padding: 60px 0 40px; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.2s;
}
.feature-card:hover { border-color: var(--primary); background: var(--bg-card-hover); transform: translateY(-2px); }
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; }

/* ---------- Architecture Diagram v2 ---------- */
.arch-diagram-v2 {
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.arch-diagram-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
}
.arch-diagram-v2 h3 {
  margin-bottom: 12px;
  color: var(--text-heading);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: none;
}
.arch-tagline {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 40px;
  opacity: 0.9;
}

/* Data flow steps */
.arch-dataflow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.arch-step {
  display: flex;
  align-items: center;
  gap: 14px;
}
.arch-step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.35);
}
.arch-step-label {
  font-weight: 600;
  font-size: 0.95rem;
  text-align: left;
  line-height: 1.3;
  color: var(--text-heading);
}
.arch-step-label small {
  display: block;
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.82rem;
}
.arch-connector {
  width: 70px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 0 18px;
  position: relative;
}
.arch-connector::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  width: 0;
  height: 0;
  border-left: 8px solid var(--accent);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* Stack layers */
.arch-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.arch-layer {
  display: flex;
  align-items: stretch;
  gap: 20px;
  padding: 14px 0;
}
.arch-layer-label {
  width: 90px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-right: 2px solid var(--border);
  padding-right: 16px;
}
.arch-layer-boxes {
  flex: 1;
  display: flex;
  gap: 14px;
  justify-content: center;
}
.arch-layer-arrow {
  text-align: center;
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 10px 0;
  letter-spacing: 0.02em;
  margin-left: 110px;
}

/* Components */
.arch-component {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  text-align: left;
  min-width: 170px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.arch-component:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 2px 16px rgba(37, 99, 235, 0.1);
}
.arch-component.wide { flex: 1; max-width: 620px; text-align: center; }
.arch-component.small { min-width: 130px; text-align: center; }
.arch-component.accent {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: 0 0 24px rgba(37, 99, 235, 0.08);
}
.arch-component strong {
  color: var(--text-heading);
  font-size: 1.05rem;
  margin-bottom: 3px;
}
.arch-component span {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

/* Scheme tags */
.arch-schemes {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 8px 0;
  flex-wrap: wrap;
}
.arch-tag {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-light);
  border: 1px solid rgba(37, 99, 235, 0.3);
  letter-spacing: 0.03em;
}
.arch-tag.highlight {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent);
  border-color: rgba(6, 182, 212, 0.3);
}

/* Engine layer highlight */
.engine-layer .arch-layer-label { color: var(--primary-light); border-right-color: var(--primary); }

/* Infrastructure layer */
.infra-layer {
  border-top: 1px dashed var(--border);
  margin-top: 8px;
  padding-top: 16px;
}

/* ---------- Use Cases ---------- */
#usecases {
  padding: 40px 0 60px;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(6, 182, 212, 0.03) 50%, var(--bg) 100%);
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.2s;
}
.usecase-card:hover { border-color: var(--accent); }
.usecase-icon { font-size: 2rem; margin-bottom: 12px; }
.usecase-card h3 { margin-bottom: 12px; }
.usecase-card ul { list-style: none; margin-bottom: 16px; }
.usecase-card li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.usecase-card li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}
.usecase-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid rgba(6, 182, 212, 0.3);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

/* ---------- Security / Sovereignty / Compliance ---------- */
#security { padding: 60px 0; }

.security-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}
.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.pillar-card:hover { border-color: rgba(37, 99, 235, 0.4); }
.pillar-icon { font-size: 2rem; margin-bottom: 16px; }
.pillar-card h3 { margin-bottom: 16px; font-size: 1.1rem; }
.pillar-card ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.pillar-card li {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  padding-left: 20px;
  position: relative;
}
.pillar-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}
.pillar-card li strong { color: var(--text-heading); }

/* Post-quantum highlight */
.pq-highlight {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.pq-content { flex: 1; }
.pq-content h3 { margin-bottom: 12px; color: var(--accent); font-size: 1.15rem; }
.pq-content p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.6; margin-bottom: 10px; }
.pq-content p:last-child { margin-bottom: 0; }
.pq-warning { font-style: italic; opacity: 0.85; }
.pq-badge {
  text-align: center;
  flex-shrink: 0;
  padding: 24px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius);
}
.pq-badge-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}
.pq-badge-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Pricing ---------- */
#pricing { padding: 60px 0; background: linear-gradient(180deg, var(--bg) 0%, rgba(37, 99, 235, 0.03) 100%); }

.pricing-academic {
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 32px;
}
.pricing-academic strong { color: var(--accent); }
.pricing-academic a { color: var(--accent); font-weight: 600; text-decoration: underline; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  position: relative;
  transition: all 0.2s;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pricing-card.featured { border-color: var(--primary); }

.pricing-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.pricing-header {
  padding: 32px 32px 24px;
  border-bottom: 1px solid var(--border);
}
.pricing-header h3 { font-size: 1.3rem; margin-bottom: 8px; }
.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-heading);
}
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
.pricing-sub { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

.pricing-features {
  list-style: none;
  padding: 24px 32px;
}
.pricing-features li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  font-size: 0.95rem;
}
.pricing-features li.yes::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}
.pricing-features li.no {
  color: var(--text-muted);
  opacity: 0.5;
}
.pricing-features li.no::before {
  content: '\2715';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}
.pricing-features li.included {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 4px;
}

.pricing-limits {
  padding: 12px 32px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

.pricing-card > a.btn {
  display: block;
  margin: 16px 32px 32px;
}

/* ---------- API Preview ---------- */
#api-preview {
  padding: 60px 0;
}

.code-block {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #161b22;
  border-bottom: 1px solid var(--border);
}
.code-dot { width: 12px; height: 12px; border-radius: 50%; }
.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27c93f; }
.code-title { margin-left: auto; color: var(--text-muted); font-size: 0.8rem; }

.code-block pre {
  padding: 24px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}
.code-block code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  color: #e6edf3;
}
.code-comment { color: #8b949e; }

/* ---------- Contact ---------- */
#contact {
  padding: 60px 0;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item strong { display: block; color: var(--text-heading); margin-bottom: 4px; }
.contact-item span, .contact-item a { color: var(--text-muted); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-light);
}
.contact-form select { appearance: none; cursor: pointer; }
.contact-form button { align-self: flex-start; }

/* ---------- Footer ---------- */
footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p { color: var(--text-muted); font-size: 0.9rem; margin-top: 12px; }

.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links h4 { color: var(--text-heading); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--text-heading); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p { color: var(--text-muted); font-size: 0.85rem; }
.footer-legal { margin-top: 4px; font-size: 0.8rem; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; right: 24px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }

  #brand { padding-top: 120px; padding-bottom: 60px; }
  .brand-name { font-size: 2.5rem; }
  .brand-product-name { font-size: 1.5rem; }
  .brand-tagline { font-size: 1.05rem; }

  .hero-stats { flex-direction: column; gap: 24px; }

  .features-grid,
  .usecases-grid,
  .pricing-grid { grid-template-columns: 1fr; }

  .security-pillars { grid-template-columns: 1fr; }
  .pq-highlight { flex-direction: column; gap: 24px; padding: 24px; }
  .pq-badge { align-self: center; }

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

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .arch-diagram-v2 { padding: 32px 20px; }
  .arch-diagram-v2 h3 { font-size: 1.4rem; }
  .arch-dataflow { flex-direction: column; gap: 12px; }
  .arch-connector { width: 2px; height: 40px; margin: 0; }
  .arch-connector::after { right: -4px; top: auto; bottom: -4px; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 8px solid var(--accent); border-bottom: none; }
  .arch-layer { flex-direction: column; align-items: center; }
  .arch-layer-label { width: auto; margin-bottom: 8px; border-right: none; padding-right: 0; border-bottom: 2px solid var(--border); padding-bottom: 4px; }
  .arch-layer-arrow { margin-left: 0; }
  .arch-layer-boxes { flex-direction: column; width: 100%; }
  .arch-component.wide { max-width: 100%; }
  .arch-component { min-width: 0; text-align: center; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .pricing-card { margin: 0; }
}