/* =============================================
   CUSTOM PROPERTIES
   ============================================= */
:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --bg: #fafafa;
  --bg-alt: #f5f5f5;
  --blue: #2563eb;
  --text: #0a0a0a;
  --text-muted: #6b7280;
  --text-dim: #9ca3af;
  --border: #e5e5e5;
  --border-light: #eee;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --radius: 6px;
  --font: 'Sora', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1, h2, h3 {
  font-family: var(--font);
  font-weight: 800;
  color: var(--black);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h1 { font-size: clamp(2.75rem, 6vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em; }

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.section-label::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--blue);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
  font-weight: 400;
}

.accent { color: var(--blue); }

/* =============================================
   SCROLL REVEAL
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }
.reveal-d5 { transition-delay: 0.5s; }
.reveal-d6 { transition-delay: 0.6s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-black { background: var(--black); color: var(--white); }
.btn-black:hover { background: #1a1a1a; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-ghost { background: transparent; color: #333; border: 1.5px solid var(--border); }
.btn-ghost:hover { border-color: var(--black); transform: translateY(-1px); }

.btn-white { background: var(--white); color: var(--black); font-weight: 700; }
.btn-white:hover { background: #f0f0f0; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(255,255,255,0.15); }

.btn-blue { background: var(--blue); color: var(--white); }
.btn-blue:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.3); }

/* =============================================
   NAVIGATION
   ============================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition);
}

.nav.scrolled {
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo img {
  height: 42px;
  width: auto;
  max-width: none;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.nav-links .btn { padding: 10px 22px; font-size: 0.82rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--black);
  transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-mobile.open { opacity: 1; pointer-events: auto; }

.nav-mobile a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.02em;
}
.nav-mobile .btn-black { color: var(--white); }

/* =============================================
   PAGE HEADER (for inner pages)
   ============================================= */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
}

.page-header h1 { margin-bottom: 16px; }
.page-header .section-label { justify-content: center; }

.page-header .section-desc {
  max-width: 540px;
  margin: 0 auto;
}

/* =============================================
   CARDS
   ============================================= */
.card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card:hover::after { transform: scaleX(1); }

.card-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.card-icon svg {
  width: 28px;
  height: 28px;
  color: var(--blue);
}

.card h3 { margin-bottom: 12px; }

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  font-weight: 400;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  padding: 24px 0;
  background: var(--black);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.3);
  font-weight: 400;
}

.footer-links { display: flex; gap: 24px; }

.footer-links a {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.3);
  font-weight: 400;
  transition: color var(--transition);
}

.footer-links a:hover { color: rgba(255, 255, 255, 0.6); }

/* =============================================
   CONTACT SECTION (reusable)
   ============================================= */
.contact {
  padding: 110px 0;
  background: var(--black);
}

.contact .section-label { color: var(--blue); }
.contact .section-label::before { background: var(--blue); }
.contact h2 { color: var(--white); }
.contact .section-desc { color: rgba(255, 255, 255, 0.45); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 72px;
  margin-top: 56px;
}

.contact-form { display: flex; flex-direction: column; gap: 18px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-group input,
.form-group textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 13px 16px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--white);
  outline: none;
  transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255, 255, 255, 0.2); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-group textarea { resize: vertical; min-height: 96px; }

.contact-form .btn { align-self: flex-start; padding: 14px 32px; font-size: 0.92rem; margin-top: 4px; }

.contact-info { padding-top: 8px; }

.contact-info-block { margin-bottom: 36px; }

.contact-info-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.25);
  margin-bottom: 8px;
}

.contact-info-value { font-size: 1rem; font-weight: 500; color: var(--white); }
.contact-info-value a { transition: color var(--transition); }
.contact-info-value a:hover { color: var(--blue); }

/* =============================================
   CTA BANNER
   ============================================= */
.cta-banner {
  padding: 80px 0;
  background: var(--bg-alt);
  text-align: center;
}

.cta-banner h2 { margin-bottom: 16px; }
.cta-banner .section-desc { margin: 0 auto 32px; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 968px) {
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 10px; text-align: center; }
  .page-header { padding: 130px 0 56px; }
}