/* ============================================
   Plinth Collective Landing Page — style.css
   Mobile-first responsive design
   Dark theme with blue/violet/emerald accents
   ============================================ */

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

:root {
  /* Blue (primary) */
  --color-primary: #3B82F6;
  --color-primary-dark: #1E40AF;
  --color-primary-light: #60A5FA;
  --color-accent: #60A5FA;
  --color-accent-light: #93C5FD;

  /* Violet (practice management) */
  --color-violet: #8B5CF6;
  --color-violet-dark: #6D28D9;
  --color-violet-light: #A78BFA;

  /* Emerald (success/completion) */
  --color-emerald: #10B981;
  --color-emerald-dark: #059669;
  --color-emerald-light: #34D399;

  /* Amber */
  --color-amber: #F59E0B;
  --color-amber-light: #FBBF24;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #60A5FA 0%, #3B82F6 40%, #1E40AF 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(96,165,250,0.12) 0%, rgba(30,64,175,0.12) 100%);
  --gradient-cta: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --gradient-dark: linear-gradient(135deg, #0C0A09 0%, #1C1917 50%, #0C0A09 100%);

  /* Surfaces */
  --color-bg: #0B0A09;
  --color-bg-alt: #0F0E0D;
  --color-bg-dark: #0B0A09;
  --color-surface: rgba(255,255,255,0.03);
  --color-surface-solid: #161413;
  --color-surface-hover: rgba(255,255,255,0.055);
  --color-surface-border: rgba(255,255,255,0.06);

  /* Text */
  --color-text: #F5F5F4;
  --color-text-light: #9C9891;
  --color-text-inverse: #FFFFFF;

  /* Borders */
  --color-border: rgba(255,255,255,0.06);

  /* Status */
  --color-success: #34D399;
  --color-error: #F87171;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  /* Radii */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px -12px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 60px rgba(59,130,246,0.08);
  --shadow-glow-accent: 0 0 40px rgba(96,165,250,0.1);

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Noise texture overlay for depth */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input { font: inherit; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.hide-mobile { display: none; }

/* --- Gradient text utility --- */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Scroll Progress Indicator --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-violet));
  z-index: 200;
  transition: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  min-height: 44px;
  min-width: 44px;
}

.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--gradient-cta);
  background-size: 200% 200%;
  background-position: 0% 50%;
  color: var(--color-text-inverse);
  padding: 14px 28px;
  font-size: 0.9375rem;
  border: none;
  letter-spacing: -0.01em;
}

.btn--primary:hover {
  background-position: 100% 50%;
  box-shadow: 0 8px 32px rgba(139,92,246,0.25), 0 0 0 1px rgba(96,165,250,0.2);
  transform: translateY(-1px);
}

/* Button hover shine */
.btn--primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(105deg, transparent 20%, rgba(255,255,255,0.15) 50%, transparent 80%);
  transition: left 0.5s ease;
  pointer-events: none;
}

.btn--primary:hover::before {
  left: 120%;
}

/* Initial shimmer animation on load */
.btn--form::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(105deg, transparent 20%, rgba(255,255,255,0.2) 50%, transparent 80%);
  pointer-events: none;
  animation: shimmer-once 2s ease 1s 1 forwards;
}

@keyframes shimmer-once {
  0% { left: -100%; }
  100% { left: 120%; }
}

.btn--sm {
  padding: 10px 22px;
  font-size: 0.8125rem;
}

.btn--nav {
  background: var(--gradient-cta);
  background-size: 200% 200%;
  background-position: 0% 50%;
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
}

.btn--nav:hover {
  background-position: 100% 50%;
  box-shadow: 0 4px 20px rgba(139,92,246,0.3);
  transform: translateY(-1px);
}

.btn--nav-outline {
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
  border-radius: var(--radius-full);
  background: transparent;
}
.btn--nav-outline:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  transform: translateY(-1px);
}

.btn--form {
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
  flex-shrink: 0;
}

.btn__loading { display: none; }
.btn.is-loading .btn__text { display: none; }
.btn.is-loading .btn__loading { display: flex; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11,10,9,0.6);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

@supports (backdrop-filter: blur(12px)) {
  .nav {
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
  }
}

@supports not (backdrop-filter: blur(12px)) {
  .nav {
    background: rgba(11,10,9,0.95);
  }
}

.nav.is-scrolled {
  box-shadow: 0 1px 32px rgba(0,0,0,0.4);
  background: rgba(11,10,9,0.92);
  border-bottom-color: rgba(255,255,255,0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav__logo-icon { flex-shrink: 0; }

/* --- Hamburger button (mobile only) --- */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  z-index: 110;
}

.nav__hamburger:hover {
  background: rgba(255,255,255,0.06);
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__hamburger.is-active .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.is-active .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.is-active .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Nav menu (mobile: dropdown, desktop: inline) --- */
.nav__menu {
  display: none;
  flex-direction: column;
  gap: 2px;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(11,10,9,0.98);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 16px 16px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  z-index: 99;
}

@supports (backdrop-filter: blur(24px)) {
  .nav__menu {
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
  }
}

.nav__menu.is-open {
  display: flex;
}

.nav__menu .nav__link {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  min-height: 44px;
}

.nav__menu .nav__link:hover,
.nav__menu .nav__link:active {
  background: rgba(255,255,255,0.06);
}

.nav__menu .btn--nav {
  display: flex;
  margin-top: 8px;
  padding: 14px 24px;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  justify-content: center;
}

.nav__menu .btn--nav .btn__short { display: none; }
.nav__menu .btn--nav .btn__full { display: inline; }

.nav__menu .btn--nav-outline {
  display: flex;
  margin-top: 8px;
  padding: 14px 24px;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  justify-content: center;
  font-weight: 500;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  letter-spacing: -0.01em;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav__link:hover {
  color: rgba(255,255,255,0.9);
}

/* Mobile nav: compact button */
.btn--nav .btn__full { display: none; }
.btn--nav .btn__short { display: inline; }

/* --- Section Eyebrow --- */
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

/* --- Hero --- */
.hero {
  padding: 140px 0 100px;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

/* Dot Grid Overlay */
.hero__dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* Gradient Orbs */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  will-change: transform;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  top: -200px;
  left: -100px;
  background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
  animation: orb-drift-1 25s ease-in-out infinite;
}

.hero__orb--2 {
  width: 500px;
  height: 500px;
  top: -100px;
  right: -150px;
  background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%);
  animation: orb-drift-2 30s ease-in-out infinite;
}

.hero__orb--3 {
  width: 400px;
  height: 400px;
  bottom: -100px;
  left: 30%;
  background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
  animation: orb-drift-3 20s ease-in-out infinite;
}

@keyframes orb-drift-1 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(40px, 30px); }
  66% { transform: translate(-20px, -15px); }
}

@keyframes orb-drift-2 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-30px, 20px); }
  66% { transform: translate(25px, -25px); }
}

@keyframes orb-drift-3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -20px); }
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__content {
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  margin-bottom: 32px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(59,130,246,0.5);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.5); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--color-text);
  margin-bottom: 24px;
  text-wrap: balance;
}

.hero__title-accent {
  background: linear-gradient(135deg, #93C5FD 0%, #3B82F6 50%, #8B5CF6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
  line-height: 1.8;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.hero__form {
  max-width: 460px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group:focus-within {
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.08), var(--shadow-lg);
}

.form__input {
  flex: 1;
  min-width: 0;
  padding: 14px 20px;
  font-size: 0.9375rem;
  border: none;
  outline: none;
  transition: border-color var(--transition);
  background: transparent;
  color: var(--color-text);
  border-radius: var(--radius-full) 0 0 var(--radius-full);
}

.form__input::placeholder {
  color: rgba(255,255,255,0.25);
}

.form__message {
  margin-top: 12px;
  font-size: 0.8125rem;
  min-height: 1.4em;
  text-align: center;
}

.form__message--success { color: var(--color-success); font-weight: 500; }
.form__message--error { color: var(--color-error); font-weight: 500; }

.hero__proof {
  margin-top: 20px;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.01em;
  text-align: center;
}

/* --- Hero Mockup --- */
.hero__visual {
  display: none;
}

.mockup {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.02);
  box-shadow: 0 32px 64px -16px rgba(0,0,0,0.5);
  transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition: transform var(--transition-slow);
}

.mockup:hover {
  transform: perspective(1200px) rotateY(-2deg) rotateX(1deg);
}

.mockup__chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mockup__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.mockup__dot--red { background: #FF5F57; }
.mockup__dot--yellow { background: #FEBC2E; }
.mockup__dot--green { background: #28C840; }

.mockup__chrome-title {
  margin-left: 8px;
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.3);
  font-weight: 500;
}

.mockup__body {
  display: flex;
  height: 280px;
  background: #0C0A09;
  overflow: hidden;
  font-family: 'Inter', -apple-system, sans-serif;
}

.mockup__sidebar {
  width: 110px;
  padding: 8px 6px;
  border-right: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: rgba(0,0,0,0.3);
  flex-shrink: 0;
  overflow: hidden;
}

.mockup__sidebar-logo {
  padding: 2px 4px 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.mockup__sidebar-section {
  margin-bottom: 6px;
}

.mockup__sidebar-label {
  display: block;
  font-size: 6px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.18);
  padding: 3px 5px 1px;
  line-height: 1;
}

.mockup__sidebar-item {
  padding: 2.5px 5px;
  border-radius: 3px;
  font-size: 8px;
  color: rgba(255,255,255,0.32);
  cursor: default;
  line-height: 1.3;
  white-space: nowrap;
}

.mockup__sidebar-item span { display: block; }

.mockup__sidebar-item--active {
  background: rgba(59,130,246,0.15);
  color: #60A5FA;
}

.mockup__main {
  flex: 1;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

.mockup__greeting {
  font-size: 11px;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1px;
  line-height: 1.2;
}

.mockup__subtext {
  font-size: 7px;
  color: rgba(255,255,255,0.28);
  margin-bottom: 10px;
}

.mockup__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  margin-bottom: 10px;
}

.mockup__stat {
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 5px;
  padding: 6px 5px;
  overflow: hidden;
}

.mockup__stat-label {
  display: block;
  font-size: 5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.28);
  margin-bottom: 2px;
  line-height: 1;
}

.mockup__stat-value {
  display: block;
  font-size: 10px;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
  line-height: 1.2;
  white-space: nowrap;
}

.mockup__stat-value--amber { color: #F59E0B; }

.mockup__projects-header {
  font-size: 8px;
  font-weight: 700;
  color: rgba(255,255,255,0.45);
  margin-bottom: 5px;
}

.mockup__project-row {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.mockup__project-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mockup__project-dot--blue { background: #3B82F6; }
.mockup__project-dot--emerald { background: #10B981; }
.mockup__project-dot--violet { background: #8B5CF6; }

.mockup__project-name {
  font-size: 8px;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.mockup__project-client {
  font-size: 7px;
  color: rgba(255,255,255,0.22);
  flex-shrink: 0;
}

.mockup__project-badge {
  font-size: 5.5px;
  font-weight: 600;
  padding: 1px 4px;
  border-radius: 6px;
  background: rgba(16,185,129,0.15);
  color: #34D399;
  flex-shrink: 0;
  white-space: nowrap;
}

.mockup__project-badge--amber {
  background: rgba(245,158,11,0.15);
  color: #FBBF24;
}

.mockup__ai {
  width: 130px;
  border-left: 1px solid rgba(255,255,255,0.06);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: rgba(0,0,0,0.15);
  flex-shrink: 0;
  overflow: hidden;
}

.mockup__ai-header {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 8px;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  margin-bottom: 2px;
}

.mockup__ai-header svg { color: #60A5FA; }

.mockup__ai-bubble {
  font-size: 6.5px;
  line-height: 1.35;
  padding: 4px 6px;
  border-radius: 5px;
}

.mockup__ai-bubble--user {
  background: rgba(59,130,246,0.15);
  color: #93C5FD;
  align-self: flex-end;
  text-align: right;
}

.mockup__ai-bubble--ai {
  background: rgba(255,255,255,0.035);
  color: rgba(255,255,255,0.45);
  border: 1px solid rgba(255,255,255,0.05);
}

/* --- Section Header --- */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.section-header__title {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  margin-bottom: 16px;
  color: var(--color-text);
  text-wrap: balance;
}

.section-header__subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

/* --- Section Dividers --- */
.features,
.how-it-works,
.personas,
.faq,
.final-cta {
  position: relative;
}

.features::before,
.how-it-works::before,
.personas::before,
.faq::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  border-radius: 1px;
}

/* --- Features --- */
.features {
  padding: clamp(5rem, 10vh, 8rem) 0;
  background: var(--color-bg-alt);
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* Glassmorphism feature cards */
.feature-card {
  padding: 32px 28px;
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-slow);
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
  background: rgba(255,255,255,0.02);
  --mouse-x: 50%;
  --mouse-y: 50%;
}

@supports (backdrop-filter: blur(12px)) {
  .feature-card {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.03);
  }
}

/* Card hover glow (cursor-tracking) */
.feature-card--glow::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(400px circle at var(--mouse-x) var(--mouse-y), rgba(59,130,246,0.06), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

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

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.1);
  box-shadow: 0 24px 48px -12px rgba(0,0,0,0.4);
}

/* Card accent line */
.feature-card__accent {
  position: absolute;
  top: 16px;
  left: 0;
  width: 3px;
  height: 40px;
  border-radius: 0 2px 2px 0;
}

.feature-card__accent--blue {
  background: linear-gradient(to bottom, var(--color-primary), var(--color-primary-light));
}

.feature-card__accent--violet {
  background: linear-gradient(to bottom, var(--color-violet), var(--color-violet-light));
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  margin-bottom: 20px;
  position: relative;
}

.feature-card__icon--clients {
  background: rgba(96,165,250,0.08);
  color: #60A5FA;
}
.feature-card__icon--health {
  background: rgba(52,211,153,0.08);
  color: #34D399;
}
.feature-card__icon--ai {
  background: rgba(147,197,253,0.08);
  color: #93C5FD;
}
.feature-card__icon--shield {
  background: rgba(139,92,246,0.08);
  color: #A78BFA;
}
.feature-card__icon--finance {
  background: rgba(139,92,246,0.08);
  color: #A78BFA;
}
.feature-card__icon--insurance {
  background: rgba(52,211,153,0.08);
  color: #34D399;
}
.feature-card__icon--certs {
  background: rgba(251,113,133,0.08);
  color: #FB7185;
}

/* --- Feature Card Highlight --- */
.feature-card--highlight {
  border-color: rgba(59,130,246,0.15);
  background: linear-gradient(135deg, rgba(59,130,246,0.05) 0%, rgba(30,64,175,0.02) 100%);
}

.feature-card--highlight::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(96,165,250,0.4) 50%, transparent 100%);
}

.feature-card--highlight:hover {
  border-color: rgba(59,130,246,0.25);
  box-shadow: 0 24px 48px -12px rgba(0,0,0,0.4), 0 0 40px rgba(59,130,246,0.06);
}

/* Practice management highlight uses violet gradient border */
.feature-card--practice-highlight {
  border-color: rgba(139,92,246,0.15);
  background: linear-gradient(135deg, rgba(139,92,246,0.05) 0%, rgba(109,40,217,0.02) 100%);
}

.feature-card--practice-highlight::after {
  background: linear-gradient(90deg, transparent 0%, rgba(167,139,250,0.4) 50%, transparent 100%);
}

.feature-card--practice-highlight:hover {
  border-color: rgba(139,92,246,0.25);
  box-shadow: 0 24px 48px -12px rgba(0,0,0,0.4), 0 0 40px rgba(139,92,246,0.06);
}

/* --- Feature Groups --- */
.features__group {
  margin-bottom: 56px;
}

.features__group:last-child {
  margin-bottom: 0;
}

.features__group-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 24px;
  padding-left: 4px;
}

.feature-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  color: var(--color-text);
  position: relative;
}

.feature-card__text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
  position: relative;
}

/* --- How It Works --- */
.how-it-works {
  padding: clamp(5rem, 10vh, 8rem) 0;
  background: var(--color-bg);
}

.steps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.step {
  text-align: center;
  max-width: 320px;
  position: relative;
  overflow: hidden;
}

/* Large background step numbers */
.step__bg-number {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  color: var(--color-text);
}

.step__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 14px;
  letter-spacing: -0.02em;
  position: relative;
}

/* Step progression colors */
.step--blue .step__number {
  color: var(--color-primary-light);
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.15);
}

.step--violet .step__number {
  color: var(--color-violet-light);
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.15);
}

.step--emerald .step__number {
  color: var(--color-emerald-light);
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.15);
}

.step__title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.step__text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Animated dashed connectors */
.step__connector {
  width: 1px;
  height: 48px;
  margin: 8px 0;
  color: rgba(139,92,246,0.2);
}

.step__connector svg {
  width: 100%;
  height: 100%;
}

/* --- Personas (Who It's For) --- */
.personas {
  padding: clamp(5rem, 10vh, 8rem) 0;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.personas__track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.persona {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  transition: all var(--transition-slow);
}

.persona:hover {
  background: rgba(255,255,255,0.035);
  border-color: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

/* Gradient bands at top */
.persona__gradient {
  height: 100px;
}

.persona--blue .persona__gradient {
  background: linear-gradient(to bottom, rgba(59,130,246,0.15) 0%, transparent 100%);
}

.persona--violet .persona__gradient {
  background: linear-gradient(to bottom, rgba(139,92,246,0.15) 0%, transparent 100%);
}

.persona--emerald .persona__gradient {
  background: linear-gradient(to bottom, rgba(16,185,129,0.15) 0%, transparent 100%);
}

.persona--amber .persona__gradient {
  background: linear-gradient(to bottom, rgba(245,158,11,0.15) 0%, transparent 100%);
}

.persona__body {
  padding: 0 24px 28px;
  margin-top: -40px;
  position: relative;
}

.persona__icon {
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--color-bg-alt);
  border: 1px solid rgba(255,255,255,0.06);
}

.persona--blue .persona__icon { color: var(--color-primary-light); }
.persona--violet .persona__icon { color: var(--color-violet-light); }
.persona--emerald .persona__icon { color: var(--color-emerald-light); }
.persona--amber .persona__icon { color: var(--color-amber-light); }

.persona__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.persona__desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 14px;
}

.persona__points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.persona__points li {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}

.persona__points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
}

/* Persona dot indicators (mobile) */
.personas__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.personas__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  transition: all var(--transition);
}

.personas__dot--active {
  background: var(--color-primary);
  width: 20px;
  border-radius: 3px;
}

/* --- FAQ --- */
.faq {
  padding: clamp(5rem, 10vh, 8rem) 0;
  background: var(--color-bg);
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.faq__item {
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  border-left: 2px solid transparent;
}

.faq__item.is-open {
  border-left-color: var(--color-primary);
  background: rgba(255,255,255,0.02);
}

/* Separator lines between items */
.faq__item + .faq__item {
  border-top: 1px solid rgba(255,255,255,0.04);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: left;
  color: var(--color-text);
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  line-height: 1.5;
  letter-spacing: -0.01em;
  min-height: 44px;
}

.faq__chevron {
  flex-shrink: 0;
  color: rgba(255,255,255,0.25);
  transition: transform var(--transition), color var(--transition);
  width: 18px;
  height: 18px;
}

.faq__question:hover .faq__chevron {
  color: rgba(255,255,255,0.5);
}

.faq__question[aria-expanded="true"] .faq__chevron {
  transform: rotate(180deg);
  color: var(--color-primary-light);
}

/* Smooth open/close with max-height + opacity */
.faq__answer {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  padding: 0 24px;
}

.faq__item.is-open .faq__answer {
  max-height: 400px;
  opacity: 1;
  padding: 0 24px 22px;
}

.faq__answer p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* Stagger FAQ animations */
.faq__item:nth-child(2)[data-animate] { transition-delay: 0.05s; }
.faq__item:nth-child(3)[data-animate] { transition-delay: 0.1s; }
.faq__item:nth-child(4)[data-animate] { transition-delay: 0.15s; }
.faq__item:nth-child(5)[data-animate] { transition-delay: 0.2s; }
.faq__item:nth-child(6)[data-animate] { transition-delay: 0.25s; }
.faq__item:nth-child(7)[data-animate] { transition-delay: 0.3s; }

/* --- Final CTA --- */
.final-cta {
  padding: clamp(5rem, 12vh, 10rem) 0;
  background: var(--color-bg-alt);
  text-align: center;
  color: var(--color-text);
  overflow: hidden;
}

/* Gradient orbs in Final CTA */
.final-cta__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  will-change: transform;
}

.final-cta__orb--1 {
  width: 400px;
  height: 400px;
  bottom: -100px;
  left: -100px;
  background: radial-gradient(circle, rgba(59,130,246,0.1) 0%, transparent 70%);
  animation: orb-drift-1 20s ease-in-out infinite;
}

.final-cta__orb--2 {
  width: 350px;
  height: 350px;
  top: -80px;
  right: -80px;
  background: radial-gradient(circle, rgba(139,92,246,0.08) 0%, transparent 70%);
  animation: orb-drift-2 25s ease-in-out infinite;
}

/* Top divider */
.final-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  border-radius: 1px;
}

.final-cta__inner {
  max-width: 580px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.final-cta__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 16px;
  text-wrap: balance;
}

.final-cta__subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
  line-height: 1.75;
}

.final-cta__reassurance {
  margin-top: 20px;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.01em;
}

.final-cta .form-group {
  border-color: rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
}

.final-cta .form-group:focus-within {
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.08), 0 24px 48px rgba(0,0,0,0.3);
}

.final-cta .form__input {
  background: transparent;
  color: var(--color-text);
}

.final-cta .form__input::placeholder {
  color: rgba(255,255,255,0.2);
}

.final-cta .form__message--success { color: #6EE7B7; }
.final-cta .form__message--error { color: #FCA5A5; }

/* --- Mobile Floating CTA --- */
.floating-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 10px 16px;
  background: rgba(11,10,9,0.95);
  border-top: 1px solid rgba(255,255,255,0.06);
  display: none;
  align-items: center;
  gap: 8px;
  transform: translateY(100%);
  transition: transform var(--transition);
}

@supports (backdrop-filter: blur(16px)) {
  .floating-cta {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(11,10,9,0.85);
  }
}

.floating-cta.is-visible {
  transform: translateY(0);
}

.floating-cta__form {
  display: flex;
  flex: 1;
  gap: 8px;
}

.floating-cta__input {
  flex: 1;
  min-width: 0;
  padding: 10px 16px;
  font-size: 0.875rem;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.04);
  color: var(--color-text);
  outline: none;
}

.floating-cta__input::placeholder {
  color: rgba(255,255,255,0.25);
}

.floating-cta__input:focus {
  border-color: rgba(59,130,246,0.3);
}

.floating-cta__btn {
  padding: 10px 20px;
  font-size: 0.8125rem;
  border-radius: var(--radius-full);
  min-height: 40px;
}

.floating-cta__dismiss {
  color: rgba(255,255,255,0.3);
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-cta__dismiss:hover {
  color: rgba(255,255,255,0.6);
}

/* --- Legal pages (Terms, Privacy) --- */
.legal {
  padding: 80px 0 48px;
}

.legal h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}

.legal__updated {
  color: rgba(255,255,255,0.35);
  font-size: 0.8125rem;
  margin-bottom: 32px;
}

.legal h2 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal p {
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  margin-bottom: 12px;
}

.legal ul {
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  margin-bottom: 12px;
  padding-left: 24px;
  list-style: disc;
}

.legal li {
  margin-bottom: 6px;
}

.legal a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal a:hover {
  color: #93C5FD;
}

/* --- Footer --- */
.footer {
  padding: 56px 0 32px;
  background: var(--color-bg);
  color: rgba(255,255,255,0.3);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer__brand .nav__logo {
  color: var(--color-text);
  margin-bottom: 8px;
}

.footer__tagline {
  font-size: 0.875rem;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.8125rem;
}

.footer__links a {
  transition: color var(--transition);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer__links a:hover {
  color: rgba(255,255,255,0.7);
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.04);
  font-size: 0.75rem;
}

/* --- Animate on scroll --- */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Staggered delays via reveal-group */
.reveal-group [data-animate]:nth-child(1) { transition-delay: 0ms; }
.reveal-group [data-animate]:nth-child(2) { transition-delay: 100ms; }
.reveal-group [data-animate]:nth-child(3) { transition-delay: 200ms; }
.reveal-group [data-animate]:nth-child(4) { transition-delay: 300ms; }
.reveal-group [data-animate]:nth-child(5) { transition-delay: 400ms; }

/* Marching ants animation for step connectors */
@keyframes marching-ants {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -20; }
}

.step__connector svg line {
  animation: marching-ants 1s linear infinite;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Small mobile: stack form vertically */
@media (max-width: 479px) {
  .form-group {
    flex-direction: column;
    border-radius: var(--radius-md);
  }

  .form__input {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    text-align: center;
  }

  .btn--form {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }
}

/* Mobile: persona horizontal scroll */
@media (max-width: 639px) {
  .personas__track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 16px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .persona {
    min-width: 280px;
    max-width: 320px;
    scroll-snap-align: start;
    flex-shrink: 0;
  }

  .floating-cta {
    display: flex;
  }

  /* Vertical connector for mobile steps */
  .step__connector {
    width: 2px;
    height: 40px;
    margin: 4px auto;
  }

  .step__connector svg {
    width: 2px;
    height: 100%;
  }
}

/* Tablet (640px+) */
@media (min-width: 640px) {
  .container { padding: 0 32px; }
  .hide-mobile { display: inline; }

  .nav__hamburger { display: none; }
  .nav__menu {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 4px;
    position: static;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: none;
    padding: 0;
    box-shadow: none;
  }
  .nav__menu .nav__link {
    font-size: 0.8125rem;
    padding: 6px 12px;
    color: rgba(255,255,255,0.5);
    background: none;
    min-height: auto;
  }
  .nav__menu .nav__link:hover {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.9);
  }
  .nav__menu .nav__link:focus-visible {
    outline: 1px solid rgba(59,130,246,0.5);
    outline-offset: 2px;
  }
  .nav__menu .nav__link:active {
    background: none;
  }
  .nav__menu .btn--nav {
    margin-top: 0;
    padding: 8px 20px;
    font-size: 0.8125rem;
    border-radius: var(--radius-full);
  }
  .nav__menu .btn--nav .btn__full { display: inline; }
  .nav__menu .btn--nav .btn__short { display: none; }
  .nav__menu .btn--nav-outline {
    margin-top: 0;
    padding: 8px 20px;
    font-size: 0.8125rem;
    border-radius: var(--radius-full);
  }

  .hero { padding: 160px 0 120px; }

  .features__grid--project {
    grid-template-columns: 1fr 1fr;
  }

  .features__grid--practice {
    grid-template-columns: 1fr 1fr;
  }

  .steps {
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
  }

  .step__connector {
    width: 64px;
    height: 2px;
    margin: 24px 0 0;
    align-self: flex-start;
  }

  .step__connector svg {
    width: 100%;
    height: 2px;
  }

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

  .personas__dots {
    display: none;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .hero {
    padding: 160px 0 120px;
  }

  /* Two-column hero */
  .hero__inner {
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 48px;
    align-items: center;
  }

  .hero__content {
    text-align: left;
  }

  .hero__subtitle {
    margin-left: 0;
    margin-right: 0;
  }

  .hero__form {
    margin: 0;
  }

  .hero__proof {
    text-align: left;
  }

  .hero__visual {
    display: block;
  }

  .features__grid--practice {
    grid-template-columns: repeat(6, 1fr);
    grid-template-areas:
      "a a b b c c"
      "d d e e c c";
  }

  .features__grid--practice .feature-card:nth-child(1) { grid-area: a; }
  .features__grid--practice .feature-card:nth-child(2) { grid-area: b; }
  .features__grid--practice .feature-card:nth-child(3) { grid-area: c; }
  .features__grid--practice .feature-card:nth-child(4) { grid-area: d; }
  .features__grid--practice .feature-card:nth-child(5) { grid-area: e; }

  .personas__track {
    grid-template-columns: repeat(4, 1fr);
  }

  .step__connector { width: 80px; }
}

/* Large desktop (1280px+) */
@media (min-width: 1280px) {
  .hero {
    padding: 180px 0 140px;
  }

  .hero__inner {
    gap: 64px;
  }
}

/* ============================================
   Accessibility: Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero__orb,
  .final-cta__orb {
    animation: none;
  }

  .step__connector svg line {
    animation: none;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress {
    display: none;
  }
}