/* ============================================================
   TXStack — Main Stylesheet
   Fonts: Plus Jakarta Sans (headings) + DM Sans (body)
   Brand: Orange #F97316 · Navy #0D1A3A
   ============================================================ */

:root {
  --tx-orange: #F97316;
  --tx-navy: #0D1A3A;
  --tx-dark: #0D1A3A;
  --tx-darker: #08101F;
  --tx-panel: #111D3A;
  --tx-border: rgba(249,115,22,0.18);
  --tx-text: #E2E8F0;
  --tx-muted: #64748B;
  --tx-white: #F8FAFC;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--tx-darker);
  color: var(--tx-text);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

/* GRID BACKGROUND */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(249,115,22,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(249,115,22,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   NAV
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 3rem;
  background: rgba(8,16,31,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--tx-border);
}

.nav-logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  color: var(--tx-white);
  text-decoration: none;
}

.nav-logo .tx { color: var(--tx-orange); font-weight: 800; }
.nav-logo .st { color: var(--tx-white); font-weight: 700; }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--tx-muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--tx-orange); }

.nav-cta {
  background: var(--tx-orange);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: 4px;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: #ea6a08 !important; color: #fff !important; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  z-index: 1;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(249,115,22,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(249,115,22,0.1);
  border: 1px solid var(--tx-border);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--tx-orange);
  margin-bottom: 2rem;
  animation: fadeUp 0.6s ease both;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--tx-orange);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: clamp(3.5rem, 8vw, 7rem);
  line-height: 0.95;
  letter-spacing: -1px;
  color: var(--tx-white);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.6s 0.1s ease both;
}

h1 .tx { color: var(--tx-orange); font-weight: 800; }
h1 .stack { color: var(--tx-white); font-weight: 700; }

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--tx-muted);
  max-width: 560px;
  margin: 0 auto 1rem;
  font-weight: 300;
  animation: fadeUp 0.6s 0.2s ease both;
}

.hero-tagline {
  font-size: 0.85rem;
  color: var(--tx-muted);
  letter-spacing: 0.12em;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.6s 0.25s ease both;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp 0.6s 0.3s ease both;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  background: var(--tx-orange);
  color: #fff;
  padding: 0.85rem 2rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: #ea6a08;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(249,115,22,0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--tx-text);
  padding: 0.85rem 2rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.2s;
}

.btn-secondary:hover {
  border-color: var(--tx-orange);
  color: var(--tx-orange);
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 0;
  border-top: 1px solid var(--tx-border);
  border-bottom: 1px solid var(--tx-border);
  background: rgba(13,26,58,0.9);
  backdrop-filter: blur(8px);
  padding: 2rem 0;
  animation: fadeUp 0.6s 0.4s ease both;
}

.stat {
  flex: 1;
  max-width: 220px;
  text-align: center;
  padding: 0 2rem;
  border-right: 1px solid var(--tx-border);
}

.stat:last-child { border-right: none; }

.stat-number {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--tx-orange);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--tx-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================================
   SECTIONS
   ============================================================ */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--tx-orange);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--tx-white);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--tx-muted);
  max-width: 560px;
  margin-bottom: 3.5rem;
}

.section-divider {
  position: relative;
  z-index: 1;
  height: 1px;
  background: var(--tx-border);
  max-width: 1100px;
  margin: 0 auto;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--tx-panel);
  border: 1px solid var(--tx-border);
  border-radius: 8px;
  padding: 2rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--tx-orange), #FBBF24);
  transform: scaleX(0);
  transition: transform 0.3s;
  transform-origin: left;
}

.service-card:hover {
  border-color: rgba(249,115,22,0.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.service-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--tx-white);
  margin-bottom: 0.5rem;
}

.service-desc {
  font-size: 0.9rem;
  color: var(--tx-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.service-features li {
  font-size: 0.82rem;
  color: var(--tx-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-features li::before {
  content: '→';
  color: var(--tx-orange);
  font-size: 0.75rem;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-content p {
  color: var(--tx-muted);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.about-content p strong {
  color: var(--tx-text);
  font-weight: 500;
}

.tech-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tech-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--tx-muted);
  margin-bottom: 0.5rem;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background: rgba(249,115,22,0.08);
  border: 1px solid rgba(249,115,22,0.2);
  color: var(--tx-orange);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.pricing-card {
  background: var(--tx-panel);
  border: 1px solid var(--tx-border);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--tx-orange);
  box-shadow: 0 0 40px rgba(249,115,22,0.1);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--tx-orange);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-tier {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--tx-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--tx-white);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.pricing-price span {
  font-size: 1rem;
  color: var(--tx-muted);
  font-weight: 400;
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--tx-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--tx-border);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.pricing-features li {
  font-size: 0.85rem;
  color: var(--tx-text);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--tx-orange);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.pricing-cta {
  display: block;
  text-align: center;
  padding: 0.75rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s;
  border: 1px solid var(--tx-orange);
  color: var(--tx-orange);
}

.pricing-card.featured .pricing-cta {
  background: var(--tx-orange);
  color: #fff;
}

.pricing-cta:hover {
  background: var(--tx-orange);
  color: #fff;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-wrapper {
  background: var(--tx-panel);
  border: 1px solid var(--tx-border);
  border-radius: 8px;
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--tx-white);
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--tx-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--tx-text);
}

.contact-detail-icon {
  width: 36px;
  height: 36px;
  background: rgba(249,115,22,0.1);
  border: 1px solid var(--tx-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-muted);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  padding: 0.7rem 0.9rem;
  color: var(--tx-text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--tx-orange);
}

.form-group select option { background: var(--tx-panel); }

.form-group textarea { resize: vertical; min-height: 100px; }

.form-submit {
  background: var(--tx-orange);
  color: #fff;
  border: none;
  padding: 0.85rem;
  border-radius: 4px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}

.form-submit:hover {
  background: #ea6a08;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(249,115,22,0.3);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--tx-border);
  padding: 2.5rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(6,8,16,0.8);
}

.footer-logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
  color: var(--tx-white);
}

.footer-logo .tx { color: var(--tx-orange); }
.footer-logo .st { color: var(--tx-white); font-weight: 700; }

.footer-copy {
  font-size: 0.8rem;
  color: var(--tx-muted);
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--tx-muted);
  letter-spacing: 0.08em;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .about-grid, .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .stat { padding: 0 1rem; }
  footer { flex-direction: column; gap: 1rem; text-align: center; }
  section { padding: 4rem 1.5rem; }
}