/* ===== DESIGN SYSTEM ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg: #08080a;
  --bg-2: #111113;
  --bg-3: #1a1a1f;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(255,255,255,0.06);
  --text: #f0f0f2;
  --text-2: #9a9aa8;
  --text-3: #5a5a6e;
  --accent: #6366f1;
  --accent-2: #818cf8;
  --accent-glow: rgba(99,102,241,0.2);
  --green: #22c55e;
  --border: rgba(255,255,255,0.06);
  --border-h: rgba(255,255,255,0.12);
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 24px;
  --r-full: 9999px;
  --font-h: 'Space Grotesk', sans-serif;
  --font-b: 'Inter', sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-b); background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== UTILITY ===== */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.section { padding: 120px 0; }
.section-alt { background: var(--bg-2); }
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label {
  display: inline-block;
  font-size: 11px; font-weight: 600; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: 16px;
}
.section-header h2 {
  font-family: var(--font-h); font-size: clamp(30px, 4vw, 46px);
  font-weight: 700; letter-spacing: -1.5px; line-height: 1.1;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 20px 0;
  background: transparent;
  transition: background 0.4s, padding 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  padding: 14px 0;
  background: rgba(8,8,10,0.9);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
  font-family: var(--font-h); font-size: 22px; font-weight: 700; letter-spacing: -0.5px;
}
.nav-logo span { color: var(--accent-2); }
.nav-cta {
  padding: 10px 28px;
  background: var(--text); color: var(--bg);
  border-radius: var(--r-full);
  font-size: 13px; font-weight: 600;
  transition: transform 0.3s, box-shadow 0.3s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 30px rgba(255,255,255,0.1); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 140px 24px 100px; position: relative; overflow: hidden;
}
.hero-glow {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -60%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  filter: blur(100px); pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px 6px 10px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-full);
  font-size: 12px; font-weight: 500; color: var(--text-2);
  margin-bottom: 32px;
  animation: fadeUp 0.6s var(--ease);
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  animation: pulse-green 2s infinite;
}
@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
  50% { box-shadow: 0 0 0 5px rgba(34,197,94,0); }
}
.hero h1 {
  font-family: var(--font-h);
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 700; line-height: 1.05; letter-spacing: -2.5px;
  margin-bottom: 24px; max-width: 700px; margin-left: auto; margin-right: auto;
  animation: fadeUp 0.6s var(--ease) 0.1s both;
}
.hero-desc {
  font-size: 17px; color: var(--text-2); line-height: 1.7;
  max-width: 520px; margin: 0 auto 40px;
  animation: fadeUp 0.6s var(--ease) 0.2s both;
}
.hero-actions {
  display: flex; gap: 12px; justify-content: center;
  animation: fadeUp 0.6s var(--ease) 0.3s both;
}
.btn-primary {
  padding: 14px 32px;
  background: var(--text); color: var(--bg);
  border-radius: var(--r-full);
  font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(255,255,255,0.12); }
.btn-primary svg { width: 18px; height: 18px; }
.btn-secondary {
  padding: 14px 32px;
  background: transparent; border: 1px solid var(--border);
  color: var(--text); border-radius: var(--r-full);
  font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  transition: border-color 0.3s, background 0.3s;
}
.btn-secondary:hover { border-color: var(--border-h); background: var(--bg-card); }
.btn-full { width: 100%; justify-content: center; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== FEATURES ===== */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature-card {
  padding: 32px 28px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s;
}
.feature-card:hover {
  transform: translateY(-4px); border-color: var(--border-h); background: var(--bg-card-hover);
}
.feature-icon {
  width: 44px; height: 44px;
  background: rgba(99,102,241,0.1);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; stroke: var(--accent-2); }
.feature-card h3 { font-family: var(--font-h); font-size: 17px; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.2px; }
.feature-card p { font-size: 14px; color: var(--text-2); line-height: 1.6; }

/* ===== STEPS ===== */
.steps-grid { display: flex; align-items: center; justify-content: center; gap: 0; }
.step-card {
  flex: 1; max-width: 280px; padding: 36px 28px; text-align: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.step-card:hover { transform: translateY(-4px); border-color: var(--border-h); }
.step-number {
  width: 40px; height: 40px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-h); font-size: 16px; font-weight: 700; color: white;
}
.step-card h3 { font-family: var(--font-h); font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.step-card p { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.step-connector {
  width: 48px; height: 1px; background: var(--border); flex-shrink: 0;
}

/* ===== BENEFITS ===== */
.benefits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 800px; margin: 0 auto; }
.benefit-item {
  display: flex; gap: 14px; padding: 20px 22px; align-items: flex-start;
  border-radius: var(--r-md);
  transition: background 0.3s;
}
.benefit-item:hover { background: var(--bg-card); }
.benefit-check {
  width: 28px; height: 28px; flex-shrink: 0;
  background: rgba(34,197,94,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.benefit-check svg { width: 14px; height: 14px; stroke: var(--green); }
.benefit-item h4 { font-family: var(--font-h); font-size: 15px; font-weight: 700; margin-bottom: 2px; }
.benefit-item p { font-size: 13px; color: var(--text-2); line-height: 1.5; }

/* ===== PRICING ===== */
.pricing-card {
  max-width: 520px; margin: 0 auto; padding: 52px 44px;
  text-align: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-xl);
  position: relative;
}
.pricing-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
}
.price-row { margin: 20px 0 16px; display: flex; align-items: baseline; justify-content: center; gap: 14px; }
.price-old {
  font-family: var(--font-h); font-size: 22px; font-weight: 600;
  color: var(--text-3); text-decoration: line-through;
}
.price-current {
  font-family: var(--font-h); font-size: clamp(44px, 8vw, 56px); font-weight: 700;
  letter-spacing: -2px;
  background: linear-gradient(135deg, var(--text), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.price-desc { font-size: 14px; color: var(--text-2); margin-bottom: 28px; }
.price-includes { text-align: left; margin-bottom: 32px; display: flex; flex-direction: column; gap: 12px; }
.price-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--text-2);
}
.price-item svg { width: 18px; height: 18px; flex-shrink: 0; stroke: var(--green); }

/* ===== FOOTER ===== */
.footer { padding: 28px 0; border-top: 1px solid var(--border); }
.footer-row {
  display: flex; align-items: center; justify-content: space-between;
}
.footer-logo { font-size: 18px; }
.footer-copy { font-size: 12px; color: var(--text-3); }

/* ===== FULLSCREEN DEMO ===== */
.demo-overlay {
  position: fixed; inset: 0; z-index: 100000;
  background: #05050a;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.5s var(--ease);
}
.demo-overlay.active { opacity: 1; pointer-events: auto; }

#demo-waveform {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 1;
}

.demo-close {
  position: absolute; top: 24px; right: 28px;
  font-size: 32px; color: rgba(255,255,255,0.3);
  z-index: 10; line-height: 1;
  transition: color 0.3s;
}
.demo-close:hover { color: rgba(255,255,255,0.8); }

.demo-captions {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 90%;
  max-width: 700px;
}

.caption-line {
  font-family: var(--font-b);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
  color: rgba(255,255,255,0.9);
  opacity: 0;
  transform: translateY(14px);
  animation: captionIn 0.4s var(--ease) forwards;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.caption-ai { color: rgba(180,185,255,0.95); }
.caption-user { color: rgba(255,255,255,0.85); }

.caption-speaker {
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  opacity: 0.5;
  margin-right: 6px;
}
.caption-ai .caption-speaker { color: var(--accent-2); }
.caption-user .caption-speaker { color: rgba(255,255,255,0.45); }

.caption-fade-out {
  opacity: 0 !important;
  transform: translateY(-8px) !important;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

@keyframes captionIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .caption-line { font-size: 13px; }
  .demo-captions { bottom: 6%; max-width: 90%; }
}

/* ===== DEMO CTA ===== */
.demo-cta {
  position: absolute; inset: 0;
  z-index: 8;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  background: rgba(5,5,10,0.75);
  opacity: 0; pointer-events: none;
  transition: opacity 0.8s var(--ease);
}
.demo-cta.active { opacity: 1; pointer-events: auto; }
.demo-cta h2 {
  font-family: var(--font-h); font-size: clamp(28px, 4vw, 44px);
  font-weight: 700; letter-spacing: -1.5px;
  color: var(--text); margin-bottom: 12px;
}
.demo-cta p {
  font-size: 16px; color: var(--text-2); margin-bottom: 32px;
}
.demo-cta .btn-primary {
  font-size: 15px; padding: 16px 40px;
}

/* ===== CHAT WIDGET ===== */
#dental-widget-toggle {
  position: fixed; bottom: 24px; right: 24px;
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  z-index: 1000000;
  box-shadow: 0 6px 24px var(--accent-glow);
  transition: transform 0.3s, box-shadow 0.3s;
}
#dental-widget-toggle:hover { transform: scale(1.06); box-shadow: 0 10px 36px var(--accent-glow); }
#dental-widget-toggle svg { width: 24px; height: 24px; fill: white; transition: opacity 0.3s, transform 0.3s; }
#dental-widget-toggle .icon-close { position: absolute; opacity: 0; transform: rotate(-90deg); }
#dental-widget-toggle.active .icon-chat { opacity: 0; transform: rotate(90deg); }
#dental-widget-toggle.active .icon-close { opacity: 1; transform: rotate(0deg); }

#dental-widget-container {
  position: fixed; bottom: 96px; right: 24px;
  width: 380px; height: 540px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  display: none; flex-direction: column;
  font-family: var(--font-b);
  overflow: hidden; z-index: 999999;
  opacity: 0; transform: translateY(16px) scale(0.96);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
#dental-widget-container.open { display: flex; }
#dental-widget-container.visible { opacity: 1; transform: translateY(0) scale(1); }

#dental-widget-header {
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(129,140,248,0.06));
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  display: flex; align-items: center;
}
.header-info { display: flex; align-items: center; gap: 10px; }
.header-avatar {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white;
}
.header-avatar svg { width: 18px; height: 18px; }
.header-name { font-weight: 600; font-size: 14px; }
#connection-status {
  font-size: 11px; color: var(--text-3);
  display: flex; align-items: center; gap: 5px;
}
#connection-status::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%;
  background: var(--text-3); transition: background 0.3s;
}
#connection-status.connected::before { background: var(--green); }
#connection-status.disconnected::before { background: #ef4444; }

#dental-widget-chat {
  flex: 1; padding: 16px 18px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 8px;
  scroll-behavior: smooth;
}
#dental-widget-chat::-webkit-scrollbar { width: 3px; }
#dental-widget-chat::-webkit-scrollbar-track { background: transparent; }
#dental-widget-chat::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 2px; }

.chat-bubble {
  max-width: 82%; padding: 11px 15px;
  border-radius: 16px;
  font-size: 13px; line-height: 1.5;
  animation: msgIn 0.3s var(--ease);
  word-wrap: break-word;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.bubble-ai { background: var(--bg-3); color: var(--text); align-self: flex-start; border-bottom-left-radius: 4px; }
.bubble-user { background: linear-gradient(135deg, var(--accent), #818cf8); color: white; align-self: flex-end; border-bottom-right-radius: 4px; }

.typing-indicator { display: flex; align-items: center; gap: 4px; padding: 12px 16px; align-self: flex-start; }
.typing-indicator span {
  width: 6px; height: 6px; background: var(--text-3);
  border-radius: 50%; animation: bounce 1.4s infinite ease-in-out;
}
.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

#dental-widget-controls {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
  background: rgba(17,17,19,0.9);
}
.mic-btn {
  background: linear-gradient(135deg, var(--accent), #818cf8);
  color: white; border-radius: 50%;
  width: 44px; height: 44px; margin: 0 auto;
  box-shadow: 0 4px 16px var(--accent-glow);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.mic-btn:hover { box-shadow: 0 6px 24px var(--accent-glow); }
.mic-btn:active { transform: scale(0.95); }
.mic-btn.listening {
  animation: mic-pulse 1.5s infinite;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  box-shadow: 0 4px 12px rgba(239,68,68,0.4);
}
.mic-btn svg { width: 20px; height: 20px; fill: white; }
@keyframes mic-pulse {
  0% { box-shadow: 0 0 0 0 rgba(239,68,68,0.6); }
  70% { box-shadow: 0 0 0 12px rgba(239,68,68,0); }
  100% { box-shadow: 0 0 0 0 rgba(239,68,68,0); }
}

.text-input-row { display: flex; gap: 8px; }
.text-input-row input {
  flex: 1; padding: 10px 14px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-full);
  outline: none; font-size: 13px; color: var(--text);
  transition: border-color 0.3s; font-family: var(--font-b);
}
.text-input-row input::placeholder { color: var(--text-3); }
.text-input-row input:focus { border-color: var(--accent); }
.send-btn {
  background: var(--accent); color: white;
  border-radius: 50%; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: transform 0.2s, background 0.2s;
}
.send-btn:hover { background: #4f46e5; }
.send-btn:active { transform: scale(0.95); }
.send-btn svg { width: 15px; height: 15px; fill: white; margin-left: 2px; }

/* ===== CONTACT PAGE ===== */
.contact-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 140px 24px 80px;
}
.contact-card {
  width: 100%; max-width: 480px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 48px 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.contact-card h2 {
  font-family: var(--font-h); font-size: 32px; font-weight: 700;
  margin-bottom: 8px; letter-spacing: -1px;
}
.contact-card p {
  color: var(--text-2); font-size: 15px; margin-bottom: 32px; line-height: 1.6;
}
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 13px; font-weight: 500; color: var(--text); }
.form-group input, .form-group textarea {
  width: 100%; padding: 14px 16px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-md); color: var(--text); font-family: var(--font-b); font-size: 14px;
  transition: border-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent); outline: none;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-error { color: #ef4444; font-size: 13px; display: none; margin-top: 4px; }
.form-success {
  background: rgba(34,197,94,0.1); border: 1px solid var(--green);
  color: var(--green); padding: 16px; border-radius: var(--r-md);
  font-size: 14px; margin-bottom: 24px; display: none; text-align: center;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--text-2); transition: color 0.3s; }
.nav-link:hover { color: var(--text); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .navbar .container { padding: 0 16px; }
  .nav-logo { font-size: 18px; }
  .nav-links { gap: 12px; }
  .nav-link { font-size: 12px; }
  .nav-cta { padding: 8px 16px; font-size: 12px; white-space: nowrap; }
  
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { flex-direction: column; gap: 0; }
  .step-connector { width: 1px; height: 32px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .pricing-card { padding: 36px 24px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .footer-row { flex-direction: column; gap: 8px; text-align: center; }
  #dental-widget-container { right: 10px; left: 10px; width: auto; bottom: 88px; height: 70vh; }
  .contact-card { padding: 36px 24px; }
}