/* ── OpenAI-style: clean, minimal, light ── */
:root {
  --bg: #ffffff;
  --bg-alt: #f7f7f8;
  --bg-card: #ffffff;
  --text: #0d0d0d;
  --text-muted: #6e6e80;
  --border: #e5e5e5;
  --accent: #10a37f;
  --accent-hover: #0d8c6a;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.08);
  --radius: 8px;
  --radius-lg: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

.grid-bg {
  display: none;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-cta {
  font-size: 14px;
  font-weight: 500;
  color: var(--bg);
  background: var(--text);
  padding: 10px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s;
}

.nav-cta:hover {
  background: #333;
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 48px;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  animation: fadeUp 0.8s ease both;
}

.hero-tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(40px, 5.5vw, 56px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-sub-line {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-btn {
  font-size: 14px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s;
}

.hero-btn-primary {
  color: #fff;
  background: var(--text);
  border: none;
}

.hero-btn-primary:hover {
  background: #333;
}

.hero-btn-secondary {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
}

.hero-btn-secondary:hover {
  background: var(--bg-alt);
  border-color: #ccc;
}

/* ── Section intro & badges ── */
.section-intro {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 24px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 20px;
}

/* ── Feature list ── */
.feature-list {
  list-style: none;
  margin-top: 32px;
}

.feature-list li {
  border-left: 2px solid var(--border);
  padding-left: 24px;
  margin-bottom: 28px;
}

.feature-list li:last-child { margin-bottom: 0; }

.feature-list h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.feature-list p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

.code-block {
  font-family: ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  margin-top: 20px;
}

/* ── CONTACT FORM ── */
.contact-section {
  position: relative;
  padding: 140px 48px 120px;
  z-index: 1;
}

.contact-section .contact-title {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--accent);
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  transition: border-color 0.2s;
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16,163,127,0.15);
}

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

.form-disclaimer {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 24px;
  margin-bottom: 12px;
}

.form-disclaimer + .form-disclaimer {
  margin-top: 12px;
}

.form-submit {
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 12px 28px;
  margin-top: 24px;
  cursor: pointer;
  transition: background 0.2s;
}

.form-submit:hover {
  background: #333;
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-thank-you {
  display: none;
}

.thank-you-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.thank-you-text {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.thank-you-sub {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.thank-you-sub a { color: var(--accent); }

/* ── Sections & cards ── */
.section-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.section-padding { padding: 96px 48px; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: #ddd;
}

.card-cta .hero-btn-primary {
  color: #fff;
  background: var(--text);
}

.card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card ul {
  list-style: none;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.card ul li::before { content: "→ "; color: var(--accent); font-weight: 500; }

.card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── TEAM ── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.member {
  border-left: 3px solid var(--accent);
  padding-left: 20px;
}

.member h4 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

.member span {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 8px;
}

.member p { font-size: 15px; color: var(--text-muted); line-height: 1.6; }

.member-featured .member-summary { max-width: 640px; font-size: 16px; line-height: 1.65; }

.experience-block { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--border); }
.experience-list { list-style: none; }
.experience-item { margin-bottom: 32px; }
.experience-item:last-child { margin-bottom: 0; }
.experience-head { font-size: 15px; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
.experience-date { font-weight: 400; color: var(--text-muted); font-size: 14px; }
.experience-bullets { list-style: none; padding-left: 0; margin-top: 6px; }
.experience-bullets li { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 4px; padding-left: 18px; position: relative; }
.experience-bullets li::before { content: "•"; position: absolute; left: 0; color: var(--accent); font-weight: 600; }

/* ── FOOTER ── */
footer {
  padding: 80px 48px;
  border-top: 1px solid var(--border);
  text-align: center;
  background: var(--bg-alt);
}

.contact-email {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: -0.02em;
}

.contact-email:hover { color: var(--accent); }

.footer-legal {
  margin-top: 32px;
  font-size: 13px;
  color: var(--text-muted);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-home .hero { min-height: 75vh; }
.page-home .footer-compact { padding: 32px 48px; }
.contact-hero { min-height: 75vh; }

/* ── Solutions: fit in one viewport ── */
.page-solutions .solutions-section {
  padding-top: 88px;
  padding-bottom: 32px;
}

.page-solutions .solutions-section-alt {
  padding-top: 32px;
  padding-bottom: 32px;
  background: var(--bg-alt);
}

.page-solutions .solutions-section .grid-3,
.page-solutions .solutions-section-alt .grid-3 {
  gap: 16px;
}

.page-solutions .solutions-section .card,
.page-solutions .solutions-section-alt .card {
  padding: 20px 22px;
}

.page-solutions .solutions-section .card h3,
.page-solutions .solutions-section-alt .card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.page-solutions .solutions-section .card p,
.page-solutions .solutions-section-alt .card p {
  font-size: 14px;
  line-height: 1.5;
}

.page-solutions .solutions-section .section-tag,
.page-solutions .solutions-section-alt .section-tag {
  margin-bottom: 12px;
}

.page-solutions footer {
  padding: 24px 48px;
}

@media (max-width: 900px) {
  nav { padding: 16px 24px; display: flex; justify-content: space-between; }
  .nav-links { gap: 16px; }
  .grid-3 { grid-template-columns: 1fr; }
  .section-padding { padding: 64px 24px; }
  .hero { padding: 0 24px; }
  footer { padding: 64px 24px; }
  .page-home .footer-compact { padding: 32px 24px; }
  .page-solutions .solutions-section { padding-top: 80px; padding-left: 24px; padding-right: 24px; }
  .page-solutions .solutions-section-alt { padding-left: 24px; padding-right: 24px; }
  .page-solutions footer { padding: 24px 24px; }
  .hero-buttons { flex-direction: column; align-items: flex-start; }
  .badge-row { gap: 8px; }
  .code-block { font-size: 12px; padding: 16px 20px; }
  .contact-section { padding: 120px 24px 80px; }
  .form-card { padding: 28px 24px; }
}

@media (max-width: 480px) {
  nav { padding: 14px 16px; }
  .nav-links { gap: 12px; }
  .nav-links a { font-size: 13px; }
  .logo { font-size: 15px; }
}