/* =====================================================
   DENTIST ASSIST PRO — Design System
   Style: Glassmorphism + Bento Grid + Dark Premium
   Palette: Trust Blue + Orange CTA
   Fonts: Figtree (headings) + Noto Sans (body)
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@300;400;500;600;700;800;900&family=Noto+Sans:wght@300;400;500;600;700&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --primary:        #2563EB;
  --primary-hover:  #1D4ED8;
  --primary-light:  #3B82F6;
  --primary-glow:   rgba(37, 99, 235, 0.3);
  --accent:         #F97316;
  --accent-hover:   #EA6C0A;
  --accent-glow:    rgba(249, 115, 22, 0.3);
  --success:        #22C55E;
  --warning:        #F59E0B;
  --danger:         #EF4444;

  /* Dark background */
  --bg-dark:        #050A1A;
  --bg-dark-2:      #0A1530;
  --bg-dark-3:      #0F1E40;
  --surface-dark:   rgba(255,255,255,0.04);
  --surface-dark-hover: rgba(255,255,255,0.08);

  /* Light background */
  --bg-light:       #F8FAFC;
  --bg-light-2:     #EEF4FF;
  --surface:        #FFFFFF;
  --surface-2:      #F1F5FB;
  --border:         #E2E8F0;
  --border-dark:    rgba(255,255,255,0.10);

  /* Text */
  --text-primary:   #1E293B;
  --text-secondary: #64748B;
  --text-muted:     #94A3B8;
  --text-white:     #FFFFFF;
  --text-white-70:  rgba(255,255,255,0.7);
  --text-white-50:  rgba(255,255,255,0.5);

  /* Glass */
  --glass-bg:        rgba(255,255,255,0.06);
  --glass-border:    rgba(255,255,255,0.12);
  --glass-blur:      20px;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.12);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl:   0 20px 60px rgba(0,0,0,0.15);
  --shadow-blue: 0 8px 32px rgba(37,99,235,0.25);
  --shadow-orange: 0 8px 32px rgba(249,115,22,0.25);

  /* Transitions */
  --ease-fast:   150ms ease;
  --ease-normal: 250ms ease;
  --ease-slow:   400ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: var(--bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Figtree', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

.text-sm   { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg   { font-size: 1.125rem; }
.text-xl   { font-size: 1.25rem; }
.text-2xl  { font-size: 1.5rem; }

.font-medium  { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold    { font-weight: 700; }
.font-black   { font-weight: 900; }

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section { padding: var(--space-24) 0; }
.section-sm { padding: var(--space-16) 0; }
.section-lg { padding: var(--space-24) 0 var(--space-20); }

/* Grid System */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  transition: all var(--ease-normal);
}

.navbar.scrolled {
  background: rgba(5, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-3) 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: 'Figtree', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-white);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon svg {
  width: 22px;
  height: 22px;
  fill: white;
}

.logo-accent {
  color: var(--accent);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar-links a {
  color: var(--text-white-70);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--ease-fast);
  position: relative;
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--ease-fast);
}

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

.navbar-links a:hover::after,
.navbar-links a.active::after {
  transform: scaleX(1);
}

.navbar-links a.active {
  color: var(--text-white);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all var(--ease-normal);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: 'Figtree', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--ease-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #F97316);
  color: white;
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), #E56000);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(249,115,22,0.40);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255,255,255,0.10);
  color: white;
  border: 1px solid rgba(255,255,255,0.20);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.35);
  transform: translateY(-2px);
}

.btn-blue {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-blue);
}
.btn-blue:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(37,99,235,0.40);
}

.btn-outline-light {
  border: 2px solid rgba(255,255,255,0.25);
  color: white;
  padding: calc(var(--space-3) - 2px) calc(var(--space-6) - 2px);
}
.btn-outline-light:hover {
  border-color: white;
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.8rem;
}

/* ===== GLASS CARDS ===== */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: var(--space-8);
  transition: all var(--ease-normal);
}

.glass-card:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.20);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--ease-normal);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

/* ===== SECTION TITLES ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(37,99,235,0.10);
  border: 1px solid rgba(37,99,235,0.20);
  color: var(--primary-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-label-dark {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.7);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .section-subtitle {
  margin: 0 auto;
}

/* Colored text */
.text-accent   { color: var(--accent); }
.text-primary  { color: var(--primary); }
.text-success  { color: var(--success); }
.text-white    { color: white; }
.text-white-70 { color: var(--text-white-70); }
.text-secondary { color: var(--text-secondary); }

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #60A5FA, #C084FC, #FB923C);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-blue {
  background: linear-gradient(135deg, var(--primary-light), #60A5FA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== STATS BADGES ===== */
.stat-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  text-align: center;
  transition: all var(--ease-normal);
}

.stat-badge:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-4px);
}

.stat-value {
  font-family: 'Figtree', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-white-70);
  margin-top: var(--space-2);
}

/* ===== ICON BOX ===== */
.icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-box svg {
  width: 26px;
  height: 26px;
}

.icon-box-blue   { background: rgba(37,99,235,0.15); }
.icon-box-blue svg   { color: var(--primary-light); }
.icon-box-orange { background: rgba(249,115,22,0.15); }
.icon-box-orange svg { color: var(--accent); }
.icon-box-green  { background: rgba(34,197,94,0.15); }
.icon-box-green svg  { color: var(--success); }
.icon-box-purple { background: rgba(139,92,246,0.15); }
.icon-box-purple svg { color: #A78BFA; }

/* ===== BADGE / TAG ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
}

.tag-blue    { background: rgba(37,99,235,0.12); color: var(--primary-light); }
.tag-orange  { background: rgba(249,115,22,0.12); color: var(--accent); }
.tag-green   { background: rgba(34,197,94,0.12);  color: var(--success); }
.tag-red     { background: rgba(239,68,68,0.12);   color: var(--danger); }
.tag-purple  { background: rgba(139,92,246,0.12);  color: #A78BFA; }

/* ===== DIVIDER ===== */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-16) 0;
}

.divider-dark {
  background: rgba(255,255,255,0.08);
}

/* ===== FOOTER ===== */
footer {
  background: var(--bg-dark);
  color: var(--text-white-70);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-white-50);
  margin-top: var(--space-4);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-family: 'Figtree', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.footer-col ul li { margin-bottom: var(--space-2); }

.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-white-50);
  transition: color var(--ease-fast);
}

.footer-col ul li a:hover { color: white; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom span {
  font-size: 0.85rem;
  color: var(--text-white-50);
}

/* ===== HERO DARK ===== */
.hero-dark {
  background: var(--bg-dark);
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

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

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orb-float 8s ease-in-out infinite;
}

.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.8), transparent 70%);
  top: -200px; left: -100px;
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.6), transparent 70%);
  top: 50%; right: 0px;
  transform: translateY(-50%);
  animation-delay: 3s;
}

.hero-orb-3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(139,92,246,0.5), transparent 70%);
  bottom: -100px; left: 50%;
  animation-delay: 5s;
}

.hero-grid-lines {
  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;
}

@keyframes orb-float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ===== FORM ELEMENTS ===== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  background: white;
  transition: border-color var(--ease-fast), box-shadow var(--ease-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 340px;
  height: 100vh;
  background: var(--bg-dark-2);
  border-left: 1px solid var(--glass-border);
  padding: var(--space-12) var(--space-8);
  flex-direction: column;
  gap: var(--space-6);
  z-index: 200;
  transition: right var(--ease-slow);
  backdrop-filter: blur(20px);
}

.mobile-nav.open {
  right: 0;
}

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 199;
  opacity: 0;
  transition: opacity var(--ease-normal);
}

.mobile-nav-overlay.open {
  opacity: 1;
}

.mobile-nav a {
  color: var(--text-white-70);
  font-size: 1.1rem;
  font-weight: 600;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color var(--ease-fast);
}

.mobile-nav a:hover { color: white; }

.mobile-nav-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ===== BENTO GRID ===== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: var(--space-4);
}

.bento-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  overflow: hidden;
  position: relative;
  transition: all var(--ease-normal);
  box-shadow: var(--shadow-sm);
}

.bento-card:hover {
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
  border-color: var(--primary-light);
}

.bento-span-2 { grid-column: span 2; }
.bento-span-row-2 { grid-row: span 2; }

/* ===== PROCESS STEPS ===== */
.process-step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  font-family: 'Figtree', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-blue);
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

.mx-auto { margin-left: auto; margin-right: auto; }

.w-full { width: 100%; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 56rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }

  .navbar-links { display: none; }
  .navbar-cta { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav { display: flex; }

  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }

  .bento-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .bento-span-2 { grid-column: span 1; }

  .section { padding: var(--space-16) 0; }
  .section-lg { padding: var(--space-16) 0 var(--space-12); }

  .process-step { flex-direction: column; gap: var(--space-4); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .btn-lg { padding: var(--space-3) var(--space-6); font-size: 0.9rem; }
  h1 { font-size: 1.9rem; }
}