/* ============================================================
   SVLI, LLC — style.css
   Dark theme (#0F0F13) with rose accent (#F43F5E)
   ============================================================ */

:root {
  --bg: #0F0F13;
  --bg-soft: #14141A;
  --surface: #181820;
  --surface-2: #1E1E28;
  --border: #2A2A35;
  --border-soft: #23232C;
  --text: #EDEDF2;
  --muted: #A7A8B6;
  --muted-2: #7C7D8C;
  --rose: #F43F5E;
  --rose-deep: #E11D48;
  --rose-soft: #FDA4AF;
  --rose-bg: #2A0E15;
  --green: #34D399;
  --amber: #FBBF24;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- fade-up reveal ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   PULSE NAVIGATION
   ============================================================ */
.pulse-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

/* CSS-drawn pulse waveform */
.pulse-mark {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 26px;
  flex-shrink: 0;
  animation: pulse-glow 2.4s ease-in-out infinite;
}

.pulse-mark i {
  position: absolute;
  display: block;
  height: 2px;
  background-color: var(--rose);
  border-radius: 2px;
}

.pulse-mark .p0 { left: 0;    top: 18px; width: 20px; }
.pulse-mark .p1 { left: 20px; top: 5px;  width: 2px;  height: 13px; }
.pulse-mark .p2 { left: 20px; top: 5px;  width: 5px; }
.pulse-mark .p3 { left: 25px; top: 5px;  width: 2px;  height: 17px; }
.pulse-mark .p4 { left: 25px; top: 22px; width: 5px; }
.pulse-mark .p5 { left: 30px; top: 18px; width: 2px;  height: 4px; }
.pulse-mark .p6 { left: 30px; top: 18px; width: 14px; }

@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 0 var(--rose)); }
  50%      { filter: drop-shadow(0 0 6px var(--rose)); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0 auto;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--rose);
  transition: width 0.25s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  flex-shrink: 0;
  background-color: var(--rose);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 11px 22px;
  border-radius: 8px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background-color: var(--rose-deep);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   TERMINAL HERO
   ============================================================ */
.terminal-hero {
  position: relative;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 80% 0%, #1A0B10 0%, transparent 60%),
    linear-gradient(180deg, #14141B 0%, var(--bg) 100%);
  padding: 88px 0 96px;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rose-soft);
  background-color: var(--rose-bg);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 52px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 22px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  padding: 14px 28px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background-color: var(--rose);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--rose-deep);
  transform: translateY(-1px);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--rose);
  color: var(--rose-soft);
}

.btn-light {
  background-color: #fff;
  color: #0F0F13;
}

.btn-light:hover {
  background-color: var(--rose-soft);
  transform: translateY(-1px);
}

.hero-meta {
  list-style: none;
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted-2);
}

.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.meta-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--rose);
}

/* Terminal window */
.terminal-window {
  background-color: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background-color: var(--surface-2);
  border-bottom: 1px solid var(--border-soft);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red { background-color: #F43F5E; }
.dot-amber { background-color: #F59E0B; }
.dot-green { background-color: #22C55E; }

.term-title {
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.02em;
}

.term-body {
  padding: 22px 20px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 2;
}

.term-line {
  white-space: pre-wrap;
}

.c-comment { color: var(--muted-2); }
.c-prompt  { color: var(--rose); font-weight: 600; }
.c-ok      { color: var(--green); }

.cursor {
  display: inline-block;
  width: 9px;
  height: 18px;
  background-color: var(--rose);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* ============================================================
   STATEMENT ROW
   ============================================================ */
.statement-row {
  background-color: var(--rose-bg);
  border-top: 1px solid #3A1520;
  border-bottom: 1px solid #3A1520;
  padding: 72px 0;
}

.statement-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.statement-inner h2 {
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
}

.statement-inner p {
  font-size: 17px;
  color: var(--rose-soft);
}

/* ============================================================
   STATS
   ============================================================ */
.stats-section {
  padding: 80px 0;
  background-color: var(--bg);
}

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

.stat {
  text-align: center;
  padding: 44px 24px;
  background-color: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 58px;
  font-weight: 700;
  line-height: 1;
  color: var(--rose);
  margin-bottom: 12px;
}

.stat-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ============================================================
   SECTION HEAD SHARED
   ============================================================ */
.section-head {
  max-width: 680px;
  margin-bottom: 52px;
}

.section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rose);
  margin-bottom: 14px;
}

.section-head h2,
.about-left h2,
.contact-info h2 {
  font-family: var(--font-display);
  font-size: 38px;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}

.section-lede {
  font-size: 17px;
  color: var(--muted);
}

/* ============================================================
   PROCESS
   ============================================================ */
.process-section {
  padding: 96px 0;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
}

.process-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 760px;
}

.process-step {
  position: relative;
  display: flex;
  gap: 28px;
  padding-bottom: 44px;
}

.process-step::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background-color: var(--border);
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-step:last-child::before {
  display: none;
}

.step-num {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--rose);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.step-body h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  margin-top: 8px;
}

.step-body p {
  color: var(--muted);
  max-width: 560px;
}

/* ============================================================
   CAPABILITIES (tabs + horizontal scroll)
   ============================================================ */
.capabilities-section {
  padding: 96px 0;
  background-color: var(--bg);
}

.cap-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.cap-tab {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  background-color: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.cap-tab:hover {
  color: var(--text);
  border-color: var(--border);
}

.cap-tab.is-active {
  background-color: var(--rose);
  border-color: var(--rose);
  color: #fff;
}

.cap-panels {
  position: relative;
}

.cap-panel {
  display: none;
}

.cap-panel.is-active {
  display: block;
}

.cap-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 4px 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--rose) var(--border-soft);
}

.cap-scroll::-webkit-scrollbar {
  height: 8px;
}

.cap-scroll::-webkit-scrollbar-track {
  background: var(--border-soft);
  border-radius: 4px;
}

.cap-scroll::-webkit-scrollbar-thumb {
  background: var(--rose);
  border-radius: 4px;
}

.cap-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background-color: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 30px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cap-card:hover {
  border-color: var(--rose);
  transform: translateY(-4px);
}

.cap-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--rose);
  width: 40px;
  height: 40px;
  background-color: var(--rose-bg);
  border-radius: 10px;
  margin-bottom: 18px;
}

.cap-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.cap-card p {
  font-size: 15px;
  color: var(--muted);
}

.cap-nav {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.scroll-btn {
  width: 46px;
  height: 46px;
  font-size: 18px;
  color: var(--text);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.scroll-btn:hover {
  border-color: var(--rose);
  color: var(--rose);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-section {
  padding: 96px 0;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.about-right p {
  color: var(--muted);
  margin-bottom: 18px;
  font-size: 16.5px;
}

.about-right p:first-of-type {
  color: var(--text);
  font-size: 18px;
}

.about-points {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-points li {
  position: relative;
  padding-left: 28px;
  color: var(--text);
  font-weight: 500;
}

.about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background-color: var(--rose);
}

/* ============================================================
   ENGAGEMENT MODELS COMPARISON TABLE
   ============================================================ */
.models-section {
  padding: 96px 0;
  background-color: var(--bg);
}

.compare-table {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.compare-row {
  display: grid;
  grid-template-columns: 0.8fr 1fr 1fr 1fr;
}

.compare-row:not(:last-child) {
  border-bottom: 1px solid var(--border-soft);
}

.compare-cell {
  padding: 22px 20px;
  font-size: 15px;
  color: var(--muted);
  border-right: 1px solid var(--border-soft);
}

.compare-cell:last-child {
  border-right: none;
}

.compare-axis {
  color: var(--text);
  font-weight: 600;
  background-color: var(--bg-soft);
}

.compare-head {
  background-color: var(--rose-bg);
}

.compare-head .compare-axis {
  background-color: var(--rose-bg);
  color: var(--rose-soft);
}

.model-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.compare-head .compare-cell {
  padding: 26px 20px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-section {
  padding: 96px 0;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 28px;
}

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rose);
}

.contact-list a,
.contact-list span {
  color: var(--text);
  font-size: 17px;
}

.contact-list a:hover {
  color: var(--rose-soft);
}

.contact-form {
  background-color: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 32px;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.field input,
.field textarea {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text);
  background-color: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 13px 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--muted-2);
}

.field input:focus,
.field textarea:focus {
  border-color: var(--rose);
}

.field textarea {
  resize: vertical;
}

.form-status {
  margin-top: 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--rose-soft);
  min-height: 22px;
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  padding: 88px 0;
  background-color: var(--rose);
  background-image: linear-gradient(135deg, var(--rose) 0%, var(--rose-deep) 100%);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-copy h2 {
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1.2;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  max-width: 620px;
}

.cta-copy p {
  color: #2A0E15;
  font-size: 17px;
  font-weight: 500;
}

/* ============================================================
   FOOTER (split dark/light)
   ============================================================ */
.site-footer {
  background-color: var(--bg);
}

.footer-upper {
  background-color: var(--surface-2);
  border-bottom: 1px solid var(--border);
  padding: 64px 0 48px;
}

.footer-upper-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
}

.footer-brand {
  max-width: 420px;
}

.footer-brand .nav-brand {
  margin-bottom: 18px;
}

.footer-tagline {
  color: var(--muted);
  font-size: 15.5px;
}

.footer-links {
  display: flex;
  gap: 64px;
  justify-content: flex-end;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 6px;
}

.footer-col a {
  color: var(--muted);
  font-size: 15px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--rose-soft);
}

.footer-lower {
  background-color: #0A0A0E;
  padding: 32px 0;
}

.footer-lower-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-lower-inner p {
  color: var(--muted-2);
  font-size: 14px;
}

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

.footer-legal a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-legal a:hover {
  color: var(--rose-soft);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-title {
    font-size: 44px;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .compare-row {
    grid-template-columns: 0.7fr 1fr 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 14px 0;
    font-size: 16px;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .nav-inner {
    gap: 16px;
  }

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

  .compare-table {
    overflow-x: auto;
  }

  .compare-row {
    min-width: 720px;
  }

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

  .footer-links {
    justify-content: flex-start;
  }

  .field-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-title {
    font-size: 34px;
  }

  .statement-inner h2 {
    font-size: 26px;
  }

  .section-head h2,
  .about-left h2,
  .contact-info h2 {
    font-size: 30px;
  }

  .cta-copy h2 {
    font-size: 26px;
  }

  .stat-num {
    font-size: 46px;
  }

  .hero-meta {
    flex-direction: column;
    gap: 12px;
  }
}