/* ===================================================
   Velachat — Styles
   Design: Dark navy + WhatsApp green + cyan accents
   =================================================== */

/* ── Design tokens ──────────────────────────────── */
:root {
  --bg:            #060d1f;
  --bg-surface:    #0b1628;
  --bg-card:       rgba(11, 22, 40, 0.75);
  --bg-card-hover: rgba(20, 36, 64, 0.9);
  --border:        rgba(255, 255, 255, 0.07);
  --border-glow:   rgba(37, 211, 102, 0.3);

  --primary:       #25D366;
  --primary-light: #3dea7c;
  --primary-dark:  #1aab4e;
  --primary-glow:  rgba(37, 211, 102, 0.2);

  --accent:        #00c9ff;
  --accent-glow:   rgba(0, 201, 255, 0.15);
  --purple:        #7c3aed;
  --purple-glow:   rgba(124, 58, 237, 0.15);

  --text:          #eef2ff;
  --text-muted:    #7a90b0;
  --text-dim:      #3d5066;

  --grad-primary:  linear-gradient(135deg, #25D366 0%, #00c9ff 100%);
  --grad-hero-bg:  radial-gradient(ellipse 80% 60% at 20% 40%, rgba(37,211,102,0.12) 0%, transparent 70%),
                   radial-gradient(ellipse 70% 50% at 80% 20%, rgba(0,201,255,0.10) 0%, transparent 70%),
                   radial-gradient(ellipse 60% 80% at 60% 90%, rgba(124,58,237,0.10) 0%, transparent 70%);

  --radius-sm:     8px;
  --radius:        14px;
  --radius-lg:     22px;
  --radius-xl:     32px;

  --shadow-card:   0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:   0 0 40px rgba(37,211,102,0.15);
  --shadow-lg:     0 20px 60px rgba(0,0,0,0.5);

  --transition:    0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-h:         72px;
  --section-py:    100px;
  --container:     1200px;
  --font:          'Inter', system-ui, -apple-system, sans-serif;
}

/* ── Reset & Base ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Typography ─────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); }
h3 { font-size: 1.25rem; }

/* ── Utility: container ─────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Utility: gradient text ─────────────────────── */
.grad-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Section shared ──────────────────────────────── */
.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.2);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-tag::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.6); }
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-header h2 { margin-bottom: 16px; }

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5);
  filter: brightness(1.08);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.btn-lg { padding: 17px 36px; font-size: 1rem; border-radius: var(--radius-lg); }

/* ── Navbar ──────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(6, 13, 31, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border), 0 4px 24px rgba(0,0,0,0.3);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.nav-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 14px rgba(37,211,102,0.4);
}

.nav-logo-text { color: var(--text); }
.nav-logo-text span { color: var(--primary); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

/* Nav right */
.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 32px 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%237a90b0'%3E%3Cpath d='M4.5 6.5L8 10l3.5-3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
}

.lang-select:hover, .lang-select:focus {
  border-color: var(--primary);
  color: var(--text);
  outline: none;
  background-color: rgba(37, 211, 102, 0.06);
}

.lang-select option {
  background: #0b1628;
  color: var(--text);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-hamburger:hover { background: rgba(255,255,255,0.06); }

/* ── Hero ────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 24px 80px;
}

/* Animated background blobs */
.hero-blobs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float-blob 12s ease-in-out infinite;
}

.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,211,102,0.14) 0%, transparent 70%);
  top: -150px; left: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,201,255,0.10) 0%, transparent 70%);
  top: 50px; right: -80px;
  animation-delay: -4s;
}

.blob-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(124,58,237,0.10) 0%, transparent 70%);
  bottom: -100px; left: 40%;
  animation-delay: -8s;
}

@keyframes float-blob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.95); }
}

/* Canvas particles */
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.45;
}

/* Grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--primary);
  border: 1px solid rgba(37,211,102,0.25);
  background: rgba(37,211,102,0.07);
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 28px;
  animation: fade-up 0.6s both;
}

.hero-badge .badge-dot {
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse-dot 1.8s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  animation: fade-up 0.6s 0.1s both;
}

.hero-title .title-line { display: block; }

.typing-wrapper {
  display: inline-flex;
  align-items: center;
  position: relative;
}

.typing-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 2ch;
}

.typing-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--primary);
  border-radius: 2px;
  margin-left: 4px;
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}

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

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.75;
  animation: fade-up 0.6s 0.2s both;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  animation: fade-up 0.6s 0.3s both;
}

/* WhatsApp icon SVG in CTA button */
.icon-wa {
  width: 20px; height: 20px;
  flex-shrink: 0;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: fade-up 0.6s 0.6s both;
}

.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0%   { transform: scaleY(1); transform-origin: top; }
  50%  { transform: scaleY(0.5); transform-origin: bottom; }
  100% { transform: scaleY(1); transform-origin: top; }
}

/* ── Stats bar ───────────────────────────────────── */
.stats-bar {
  padding: 0;
  position: relative;
  z-index: 2;
}

.stats-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, transparent, rgba(37,211,102,0.04), transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 40px 0;
  position: relative;
}

.stat-item {
  text-align: center;
  padding: 20px;
  border-right: 1px solid var(--border);
}

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

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Features ────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.feature-card:hover {
  border-color: rgba(37,211,102,0.25);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  background: rgba(37,211,102,0.1);
  border: 1px solid rgba(37,211,102,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  transition: all var(--transition);
  position: relative;
}

.feature-card:hover .feature-icon {
  background: rgba(37,211,102,0.18);
  transform: scale(1.05);
}

.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.feature-card .card-arrow {
  position: absolute;
  right: 24px; bottom: 24px;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  transition: all var(--transition);
}

.feature-card:hover .card-arrow {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

/* ── How it works ────────────────────────────────── */
.how-section { background: var(--bg-surface); }

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}

.how-steps::before {
  content: '';
  position: absolute;
  top: 50px;
  left: calc(100% / 6);
  right: calc(100% / 6);
  height: 1px;
  background: linear-gradient(to right, transparent, var(--primary), var(--accent), transparent);
  opacity: 0.3;
  z-index: 0;
}

.how-step {
  text-align: center;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

.step-num-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 28px;
}

.step-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto;
  position: relative;
  transition: all var(--transition);
}

.step-circle::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--grad-primary);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition);
}

.how-step:hover .step-circle {
  border-color: var(--primary);
  box-shadow: 0 0 30px var(--primary-glow);
}

.how-step:hover .step-circle::after { opacity: 0.15; }

.step-num {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.step-icon-badge {
  position: absolute;
  right: -8px; bottom: -8px;
  width: 28px; height: 28px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  box-shadow: 0 2px 10px rgba(37,211,102,0.4);
}

.how-step h3 {
  margin-bottom: 12px;
}

.how-step p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Use Cases ───────────────────────────────────── */
.usecases-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: transparent;
  transition: all var(--transition);
}

.tab-btn:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.04);
}

.tab-btn.active {
  background: var(--grad-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(37,211,102,0.3);
}

.tab-panel {
  display: none;
  animation: fade-up 0.4s both;
}

.tab-panel.active { display: block; }

.usecase-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.usecase-text h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  line-height: 1.25;
}

.usecase-text p {
  color: var(--text-muted);
  line-height: 1.75;
  font-size: 1rem;
  margin-bottom: 32px;
}

.usecase-bullets {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.usecase-bullets li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.usecase-bullets li::before {
  content: '';
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(37,211,102,0.12);
  border: 1px solid rgba(37,211,102,0.3);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2325D366' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.usecase-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.chat-mockup {
  background: linear-gradient(145deg, #0d1b35, #1a2f50);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.chat-avatar {
  width: 42px; height: 42px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.chat-name { font-weight: 600; font-size: 0.95rem; }
.chat-status { font-size: 0.75rem; color: var(--primary); }

.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.msg-in {
  background: rgba(255,255,255,0.07);
  border-bottom-left-radius: 4px;
  color: var(--text-muted);
  align-self: flex-start;
}

.msg-out {
  background: rgba(37,211,102,0.15);
  border-bottom-right-radius: 4px;
  color: var(--text);
  align-self: flex-end;
  border: 1px solid rgba(37,211,102,0.2);
}

.msg-time {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-align: right;
  margin-top: 4px;
}

.chat-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  width: fit-content;
  margin-top: 4px;
}

.dot-typing {
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: typing-dot 1.4s ease-in-out infinite;
}

.dot-typing:nth-child(2) { animation-delay: 0.2s; }
.dot-typing:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
  40%            { transform: translateY(-6px); opacity: 1; }
}

/* ── Pricing ─────────────────────────────────────── */
.pricing-section { background: var(--bg-surface); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 860px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: rgba(37,211,102,0.35);
  background: linear-gradient(145deg, rgba(37,211,102,0.06), rgba(0,201,255,0.04));
}

.pricing-card.popular::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-primary);
}

.popular-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: var(--grad-primary);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 10px;
  line-height: 1;
}

.price-value {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.plan-features-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plan-features li::before {
  content: '✓';
  flex-shrink: 0;
  width: 18px; height: 18px;
  background: rgba(37,211,102,0.12);
  border: 1px solid rgba(37,211,102,0.25);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem;
  color: var(--primary);
  margin-top: 2px;
}

.pricing-card .btn { width: 100%; justify-content: center; }

/* ── Testimonials ────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.testimonial-card:hover {
  border-color: rgba(37,211,102,0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.test-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 18px;
  color: #fbbf24;
  font-size: 0.9rem;
}

.test-quote {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.test-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.test-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.test-name { font-weight: 600; font-size: 0.9rem; }
.test-role { font-size: 0.78rem; color: var(--text-dim); margin-top: 2px; }

/* ── FAQ ─────────────────────────────────────────── */
.faq-section { background: var(--bg-surface); }

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.open { border-color: rgba(37,211,102,0.25); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  transition: color var(--transition);
  user-select: none;
}

.faq-question:hover { color: var(--primary); }

.faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all var(--transition);
  background: rgba(255,255,255,0.04);
  line-height: 1;
}

.faq-item.open .faq-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-item.open .faq-answer { max-height: 300px; }

/* ── CTA Section ─────────────────────────────────── */
.cta-section {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 120px 24px;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 70% at 50% 50%, rgba(37,211,102,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 20% 80%, rgba(0,201,255,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 0; right: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, black 30%, transparent 100%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 660px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 18px;
}

.cta-inner p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 220px;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.footer-socials {
  display: flex;
  gap: 8px;
}

.social-icon {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: all var(--transition);
}

.social-icon:hover {
  color: var(--primary);
  border-color: rgba(37,211,102,0.3);
  background: rgba(37,211,102,0.06);
}

/* ── Scroll animations ───────────────────────────── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate][data-delay="1"] { transition-delay: 0.1s; }
[data-animate][data-delay="2"] { transition-delay: 0.2s; }
[data-animate][data-delay="3"] { transition-delay: 0.3s; }
[data-animate][data-delay="4"] { transition-delay: 0.4s; }
[data-animate][data-delay="5"] { transition-delay: 0.5s; }
[data-animate][data-delay="6"] { transition-delay: 0.6s; }

/* ── Responsive ──────────────────────────────────── */

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
  :root { --section-py: 80px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-top: 1px solid var(--border); }
  .stat-item:nth-child(4) { border-top: 1px solid var(--border); border-right: none; }

  .usecase-inner { grid-template-columns: 1fr; gap: 40px; }
  .usecase-visual { max-width: 480px; margin: 0 auto; }
}

/* Mobile (≤ 768px) */
@media (max-width: 768px) {
  :root { --section-py: 64px; --nav-h: 64px; }

  .nav-links, .nav-cta-btn { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.mobile-open {
    display: flex;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    background: rgba(6, 13, 31, 0.97);
    backdrop-filter: blur(20px);
    padding: 20px 24px 32px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }

  .nav-links.mobile-open a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .features-grid { grid-template-columns: 1fr; }
  .how-steps { grid-template-columns: 1fr; gap: 40px; }
  .how-steps::before { display: none; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { justify-content: center; }

  .section-header { margin-bottom: 40px; }

  .footer-bottom { flex-direction: column; text-align: center; }
}

/* Mobile S (≤ 480px) */
@media (max-width: 480px) {
  .hero-title { font-size: 2.1rem; }
  .pricing-card { padding: 28px 24px; }
  .usecases-tabs { gap: 6px; }
  .tab-btn { padding: 8px 16px; font-size: 0.82rem; }
}