/* ============================================
   UpCurve Landing Page — Dark Theme Styles
   ============================================ */

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

:root {
  --bg-primary: #0d0d12;
  --bg-secondary: #13131a;
  --bg-card: #1a1a26;
  --accent-blue: #4f8ef7;
  --accent-purple: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #6e6e80;
  --border-color: #252535;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(13, 13, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}
.navbar-logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}
.navbar-links { display: flex; gap: 2rem; align-items: center; }
.navbar-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.navbar-links a:hover { color: var(--text-primary); }
.btn-nav {
  background: var(--accent-gradient);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  transition: opacity 0.2s !important;
}
.btn-nav:hover { opacity: 0.85; }

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(13, 13, 18, 0.7) 0%,
    rgba(13, 13, 18, 0.55) 50%,
    rgba(13, 13, 18, 0.95) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 2rem;
}
.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.hero h1 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-gradient);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 4px 24px rgba(79, 142, 247, 0.35);
}
.hero-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.hero-cta svg { width: 18px; height: 18px; }
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-muted);
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- SECTION SHARED ---- */
.section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}
.section-dark {
  background: var(--bg-secondary);
}
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 0.75rem;
  display: block;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}
.section-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 580px;
  margin-bottom: 3rem;
}

/* ---- SERVICES ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.25s, transform 0.25s;
}
.service-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-4px);
}
.service-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.service-icon svg { width: 24px; height: 24px; stroke: #fff; }
.service-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}
.service-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent-purple);
  border: 1px solid var(--accent-purple);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
}

/* ---- PRICING ---- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: start;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.25rem 2rem;
  text-align: center;
  transition: border-color 0.25s, transform 0.25s;
}
.pricing-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-4px);
}
.pricing-card.featured {
  border-color: var(--accent-purple);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.1) 0%, var(--bg-card) 60%);
  position: relative;
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing-tier {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}
.pricing-price {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}
.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}
.pricing-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  min-height: 2.5rem;
}
.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 1.75rem;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}
.pricing-features li::before {
  content: '✓';
  color: var(--accent-blue);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.btn-plan {
  display: block;
  width: 100%;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 700;
  padding: 0.8rem;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  transition: opacity 0.2s;
}
.btn-plan:hover { opacity: 0.85; }
.pricing-guarantee {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

/* ---- PORTFOLIO ---- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
}
.portfolio-card .placeholder-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.portfolio-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.portfolio-card p { color: var(--text-muted); font-size: 0.875rem; }

/* ---- SOCIAL PROOF ---- */
.proof-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem;
  flex-wrap: wrap;
}
.proof-bar span {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-secondary);
}
.proof-bar strong {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- CONTACT ---- */
.contact-wrap {
  max-width: 600px;
  margin: 0 auto;
}
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem 2rem;
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  font-family: var(--font);
  transition: border-color 0.2s;
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--bg-secondary); }
.btn-submit {
  width: 100%;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 4px 20px rgba(79, 142, 247, 0.3);
}
.btn-submit:hover { opacity: 0.9; transform: translateY(-1px); }
.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* ---- FOOTER ---- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem;
  text-align: center;
}
.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer p { color: var(--text-muted); font-size: 0.8rem; }
.footer a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.footer a:hover { color: var(--text-secondary); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .navbar { padding: 0.9rem 1.25rem; }
  .navbar-links { display: none; }
  .section { padding: 3.5rem 1.25rem; }
  .hero h1 { font-size: 2rem; }
  .pricing-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 1.75rem 1.25rem; }
}