/* Parlensky® — AI-Powered Oral Fluency Training
   by McMinsky | parlensky.com
   Mobile-first • Dark theme • Mint accent */

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

:root {
  --black: #0D0D0D;
  --black-light: #141414;
  --charcoal: #1A1A1A;
  --dark: #2A2A2A;
  --white: #FFFFFF;
  --off-white: #F2F2F2;
  --white-dim: #CCCCCC;
  --gray: #666666;
  --gray-dark: #333333;
  --gray-light: #999999;
  --mint: #00C896;
  --mint-light: #00E6AB;
  --mint-dark: #00A67D;
  --mint-glow: rgba(0, 200, 150, 0.15);
  --mint-glow-strong: rgba(0, 200, 150, 0.3);
  --gradient-mint: linear-gradient(135deg, #00C896, #00E6AB);
  --gradient-dark: linear-gradient(180deg, var(--black) 0%, var(--charcoal) 100%);
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --max-width: 1200px;
  --header-height: 70px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--black);
  color: var(--off-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.loading {
  overflow: hidden;
}

a {
  color: var(--mint);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--mint-light);
}

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

ul, ol {
  list-style: none;
}

::selection {
  background: var(--mint);
  color: var(--black);
}

/* ========================================
   LOADING SCREEN
   ======================================== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--black);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-brand {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.loader-letter {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  opacity: 0;
  transform: translateY(30px);
  animation: letterReveal 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.loader-letter:nth-child(1) { animation-delay: 0.1s; }
.loader-letter:nth-child(2) { animation-delay: 0.15s; }
.loader-letter:nth-child(3) { animation-delay: 0.2s; }
.loader-letter:nth-child(4) { animation-delay: 0.25s; }
.loader-letter:nth-child(5) { animation-delay: 0.3s; }
.loader-letter:nth-child(6) { animation-delay: 0.35s; }
.loader-letter:nth-child(7) { animation-delay: 0.4s; }
.loader-letter:nth-child(8) { animation-delay: 0.45s; }
.loader-letter:nth-child(9) { animation-delay: 0.5s; }
.loader-letter:nth-child(10) { animation-delay: 0.55s; color: var(--mint); font-size: clamp(1rem, 3vw, 1.5rem); vertical-align: super; }

.loader-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 40px;
  margin-bottom: var(--space-sm);
}

.loader-wave span {
  width: 3px;
  height: 10px;
  background: var(--mint);
  border-radius: 2px;
  animation: wave 1.2s ease-in-out infinite;
}

.loader-wave span:nth-child(1) { animation-delay: 0s; }
.loader-wave span:nth-child(2) { animation-delay: 0.1s; }
.loader-wave span:nth-child(3) { animation-delay: 0.2s; }
.loader-wave span:nth-child(4) { animation-delay: 0.3s; }
.loader-wave span:nth-child(5) { animation-delay: 0.4s; }
.loader-wave span:nth-child(6) { animation-delay: 0.3s; }
.loader-wave span:nth-child(7) { animation-delay: 0.2s; }

.loader-tagline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray);
  opacity: 0;
  animation: fadeIn 0.6s ease forwards 0.8s;
}

.loader-bar {
  width: 200px;
  height: 2px;
  background: var(--gray-dark);
  margin-top: var(--space-md);
  overflow: hidden;
  border-radius: 2px;
}

.loader-bar::after {
  content: '';
  display: block;
  width: 0%;
  height: 100%;
  background: var(--gradient-mint);
  animation: loadBar 2s ease-in-out forwards;
}

@keyframes letterReveal {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes wave {
  0%, 100% { height: 10px; opacity: 0.5; }
  50% { height: 35px; opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes loadBar {
  0% { width: 0%; }
  100% { width: 100%; }
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-medium);
}

.header.hidden {
  transform: translateY(-100%);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}

.logo-reg {
  font-size: 0.55em;
  vertical-align: super;
  color: var(--mint);
  line-height: 1;
}

.logo-sub {
  font-family: var(--font-body);
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  display: block;
  margin-top: -2px;
}

.logo-sub-link {
  text-decoration: none;
  color: inherit;
}

.logo-sub-link:hover .logo-sub {
  color: var(--mint);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition-fast);
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--black-light);
  padding: calc(var(--header-height) + var(--space-lg)) var(--space-md) var(--space-lg);
  transition: right var(--transition-medium);
  overflow-y: auto;
  border-left: 1px solid var(--gray-dark);
}

.nav.active {
  right: 0;
}

.nav-list {
  list-style: none;
}

.nav-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-link {
  display: block;
  padding: var(--space-sm) 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.nav-link:hover {
  color: var(--mint);
  padding-left: var(--space-sm);
}

.lang-switch {
  display: flex;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--gray-dark);
}

.lang-btn {
  padding: var(--space-xs) var(--space-sm);
  background: transparent;
  border: 1px solid var(--gray);
  color: var(--gray);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--mint);
  color: var(--black);
  border-color: var(--mint);
}

@media (min-width: 1024px) {
  .nav-toggle { display: none; }

  .nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    background: transparent;
    padding: 0;
    border: none;
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  .nav-list {
    display: flex;
    gap: var(--space-sm);
  }

  .nav-item { border: none; }

  .nav-link {
    padding: var(--space-xs) 0;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
  }

  .nav-link:hover { padding-left: 0; }

  .lang-switch {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    border-left: 1px solid var(--gray-dark);
    padding-left: var(--space-sm);
  }
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 2rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--mint);
  color: var(--black);
}

.btn-primary:hover {
  background: var(--mint-light);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--mint-glow-strong);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--mint);
  color: var(--mint);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--mint);
  padding: var(--space-xs) 0;
}

.btn-ghost:hover { color: var(--mint-light); }

.btn-ghost::after {
  content: '\2192';
  margin-left: var(--space-xs);
  transition: transform var(--transition-fast);
}

.btn-ghost:hover::after {
  transform: translateX(5px);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 0.9rem;
}

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: calc(var(--header-height) + var(--space-lg)) var(--space-sm) var(--space-lg);
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, var(--mint-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 200, 150, 0.08) 0%, transparent 40%),
    var(--black);
  z-index: -1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 200px;
  background: linear-gradient(to top, var(--black), transparent);
  z-index: 0;
}

.hero-content {
  max-width: 900px;
  z-index: 1;
  position: relative;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  color: var(--white);
}

.hero-title .accent {
  color: var(--mint);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--white-dim);
  max-width: 650px;
  margin: 0 auto var(--space-md);
  line-height: 1.8;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-md);
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--gray-dark);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--gray-light);
  background: rgba(255, 255, 255, 0.02);
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--mint);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--gray);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
  z-index: 10;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--mint), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ========================================
   MARQUEE / TICKER
   ======================================== */
.marquee {
  overflow: hidden;
  background: var(--charcoal);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-sm) 0;
  position: relative;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-lg);
  white-space: nowrap;
  font-size: 0.85rem;
  color: var(--gray-light);
  font-weight: 400;
}

.marquee-item .num {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--mint);
  font-size: 1rem;
}

.marquee-item .sep {
  color: var(--gray-dark);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========================================
   SECTIONS BASE
   ======================================== */
.section {
  padding: var(--space-xl) var(--space-sm);
  position: relative;
}

.section-dark {
  background: var(--charcoal);
}

.section-gradient {
  background: linear-gradient(180deg, var(--black) 0%, var(--charcoal) 50%, var(--black) 100%);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-lg);
}

.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: var(--space-xs);
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.15;
  color: var(--white);
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--gray-light);
  font-size: 1rem;
  line-height: 1.8;
  font-weight: 300;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ========================================
   PROBLEM SECTION
   ======================================== */
.problem-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.problem-card {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.problem-card:hover {
  border-color: rgba(255, 77, 77, 0.3);
  background: rgba(255, 77, 77, 0.03);
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--white);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.problem-card .icon-x {
  color: #ff4d4d;
  font-weight: 700;
  font-size: 1.2rem;
}

.problem-card p {
  color: var(--gray-light);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ========================================
   METHOD / STEPS
   ======================================== */
.steps-grid {
  display: grid;
  gap: var(--space-md);
  counter-reset: step;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step-card {
  padding: var(--space-md);
  background: rgba(0, 200, 150, 0.03);
  border: 1px solid rgba(0, 200, 150, 0.1);
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-medium);
  counter-increment: step;
}

.step-card:hover {
  border-color: var(--mint);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px var(--mint-glow);
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--mint);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.step-card p {
  color: var(--gray-light);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Formula bar */
.formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: rgba(0, 200, 150, 0.05);
  border: 1px solid rgba(0, 200, 150, 0.15);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}

.formula-item {
  text-align: center;
}

.formula-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1;
}

.formula-label {
  font-size: 0.75rem;
  color: var(--gray-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

.formula-sign {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--gray);
  font-weight: 300;
}

/* ========================================
   TRAINING MODES
   ======================================== */
.modes-grid {
  display: grid;
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .modes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .modes-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.mode-card {
  padding: var(--space-md);
  background: var(--charcoal);
  border: 1px solid var(--gray-dark);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-fast);
}

.mode-card:hover {
  border-color: var(--mint);
  background: rgba(0, 200, 150, 0.05);
}

.mode-num {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: var(--space-xs);
}

.mode-card h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.mode-card p {
  color: var(--gray-light);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ========================================
   FEATURES / DIFFERENTIATORS
   ======================================== */
.features-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  transition: all var(--transition-medium);
}

.feature-card:hover {
  border-color: rgba(0, 200, 150, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--mint-glow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mint-glow);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  font-size: 1.5rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  color: var(--gray-light);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ========================================
   SCIENCE
   ======================================== */
.science-grid {
  display: grid;
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .science-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .science-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.science-card {
  padding: var(--space-md);
  border-left: 3px solid var(--mint);
  background: rgba(0, 200, 150, 0.03);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.science-card h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}

.science-card .author {
  font-size: 0.75rem;
  color: var(--mint);
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.science-card p {
  color: var(--gray-light);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ========================================
   COMPARISON TABLE
   ======================================== */
.comparison-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 calc(-1 * var(--space-sm));
  padding: 0 var(--space-sm);
}

.comparison-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-sm);
  text-align: center;
  border-bottom: 1px solid var(--gray-dark);
}

.comparison-table thead th {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-light);
  padding-bottom: var(--space-md);
  white-space: nowrap;
}

.comparison-table thead th:first-child {
  text-align: left;
}

.comparison-table thead th.highlight {
  color: var(--mint);
  position: relative;
}

.comparison-table tbody td:first-child {
  text-align: left;
  color: var(--white);
  font-weight: 500;
}

.comparison-table tbody td {
  color: var(--gray-light);
}

.comparison-table .check {
  color: var(--mint);
  font-size: 1.2rem;
}

.comparison-table .cross {
  color: var(--gray-dark);
  font-size: 1rem;
}

.comparison-table .partial {
  color: #f0a030;
  font-size: 0.8rem;
}

.comparison-table .col-highlight {
  background: rgba(0, 200, 150, 0.05);
}

/* ========================================
   SEGMENTS / FOR WHOM
   ======================================== */
.segments-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .segments-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.segment-card {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.segment-card:hover {
  border-color: rgba(0, 200, 150, 0.3);
}

.segment-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.segment-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.segment-card p {
  color: var(--gray-light);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ========================================
   TEAM
   ======================================== */
.team-grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid.team-solo {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
}

.team-card {
  text-align: center;
  padding: var(--space-md);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  overflow: hidden;
  border: 2px solid var(--mint);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--charcoal);
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-links {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.team-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--mint);
  padding: 4px 12px;
  border: 1px solid var(--mint);
  border-radius: 100px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.team-links a:hover {
  background: var(--mint);
  color: var(--black);
}

.team-avatar .initials {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--mint);
  opacity: 0.6;
}

.team-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: var(--space-sm);
}

.team-card p {
  color: var(--gray-light);
  font-size: 0.9rem;
  line-height: 1.7;
}

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
  margin-top: var(--space-sm);
}

.team-tag {
  padding: 4px 10px;
  border: 1px solid var(--gray-dark);
  border-radius: 100px;
  font-size: 0.7rem;
  color: var(--gray-light);
  white-space: nowrap;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.testimonial-card {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  position: relative;
}

.testimonial-card::before {
  content: '\201C';
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--mint);
  opacity: 0.2;
  position: absolute;
  top: 10px;
  left: 15px;
  line-height: 1;
}

.testimonial-text {
  color: var(--off-white);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: var(--space-md);
  font-style: italic;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--mint-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--mint);
  flex-shrink: 0;
}

.testimonial-name {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--white);
  font-size: 0.9rem;
}

.testimonial-info {
  font-size: 0.75rem;
  color: var(--gray-light);
}

/* ========================================
   STATS / NUMBERS
   ======================================== */
.stats-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  padding: var(--space-md);
}

.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--gray-light);
  line-height: 1.4;
}

.stat-source {
  font-size: 0.65rem;
  color: var(--gray-dark);
  margin-top: 4px;
}

/* ========================================
   CONTACT
   ======================================== */
.contact-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.contact-tab {
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--gray-dark);
  color: var(--gray-light);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
}

.contact-tab:hover {
  border-color: var(--mint);
  color: var(--mint);
}

.contact-tab.active {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--black);
}

.contact-panel {
  display: none;
  max-width: 600px;
  margin: 0 auto;
}

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

.form-grid {
  display: grid;
  gap: var(--space-sm);
}

@media (min-width: 640px) {
  .form-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-light);
  margin-bottom: 6px;
}

.form-label .optional {
  color: var(--gray);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem var(--space-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--gray-dark);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  border-radius: var(--radius-sm);
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--mint);
  box-shadow: 0 0 0 3px var(--mint-glow);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  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='%23999' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select option {
  background: var(--charcoal);
  color: var(--white);
}

.form-submit {
  width: 100%;
  margin-top: var(--space-sm);
}

.form-note {
  text-align: center;
  margin-top: var(--space-sm);
  color: var(--gray);
  font-size: 0.75rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--black);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-lg) var(--space-sm) var(--space-md);
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand .logo {
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: var(--gray);
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4,
.footer-group h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: var(--space-md);
}

.footer-links ul { list-style: none; }

.footer-links li {
  margin-bottom: var(--space-xs);
}

.footer-links a {
  color: var(--gray);
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}

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

.footer-contact p {
  color: var(--gray);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.footer-group p {
  color: var(--gray);
  font-size: 0.85rem;
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.footer-group-link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mint);
  transition: color var(--transition-fast);
}

.footer-group-link:hover {
  color: var(--white);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: var(--space-lg) auto 0;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.footer-legal a {
  color: var(--gray);
  font-size: 0.75rem;
  cursor: pointer;
}

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

.footer-copyright {
  color: var(--gray);
  font-size: 0.75rem;
}

.footer-copyright a {
  color: var(--gray);
  transition: color var(--transition-fast);
}

.footer-copyright a:hover {
  color: var(--white);
}

/* ========================================
   GDPR BANNER
   ======================================== */
.gdpr-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(26, 26, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(0, 200, 150, 0.2);
  padding: var(--space-md);
  z-index: 9999;
  transform: translateY(100%);
  transition: transform var(--transition-medium);
}

.gdpr-banner.visible {
  transform: translateY(0);
}

.gdpr-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .gdpr-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.gdpr-text {
  color: var(--white-dim);
  font-size: 0.85rem;
  line-height: 1.6;
}

.gdpr-text a {
  color: var(--mint);
  text-decoration: underline;
  cursor: pointer;
}

.gdpr-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* ========================================
   MODALS
   ======================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10001;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-medium);
  padding: var(--space-md);
}

.modal.visible {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--charcoal);
  border: 1px solid var(--gray-dark);
  border-radius: var(--radius-md);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  position: sticky;
  top: 0;
  background: var(--charcoal);
  padding: var(--space-md);
  border-bottom: 1px solid var(--gray-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
}

.modal-close {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-xs);
  transition: color var(--transition-fast);
  line-height: 1;
}

.modal-close:hover { color: var(--white); }

.modal-body {
  padding: var(--space-md);
  color: var(--white-dim);
  font-size: 0.875rem;
  line-height: 1.8;
}

.modal-body h3 {
  color: var(--white);
  margin: var(--space-md) 0 var(--space-sm);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.modal-body h3:first-child { margin-top: 0; }

.modal-body ul {
  margin-left: var(--space-md);
  margin-bottom: var(--space-sm);
  list-style: disc;
}

.modal-body li {
  margin-bottom: 4px;
}

.modal-body a {
  color: var(--mint);
  text-decoration: underline;
}

/* ========================================
   ANIMATIONS / SCROLL REVEALS
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
}

.stagger.visible > * {
  animation: staggerIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.stagger.visible > *:nth-child(1) { animation-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { animation-delay: 0.1s; }
.stagger.visible > *:nth-child(3) { animation-delay: 0.15s; }
.stagger.visible > *:nth-child(4) { animation-delay: 0.2s; }
.stagger.visible > *:nth-child(5) { animation-delay: 0.25s; }
.stagger.visible > *:nth-child(6) { animation-delay: 0.3s; }
.stagger.visible > *:nth-child(7) { animation-delay: 0.35s; }
.stagger.visible > *:nth-child(8) { animation-delay: 0.4s; }

@keyframes staggerIn {
  to { opacity: 1; transform: translateY(0); }
}

/* Glow pulse for CTA sections */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--mint-glow); }
  50% { box-shadow: 0 0 40px var(--mint-glow-strong); }
}

/* ========================================
   UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-mint { color: var(--mint); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Divider */
.divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-mint);
  margin: 0 auto var(--space-md);
  border-radius: 2px;
}

/* ========================================
   RESPONSIVE FINE-TUNING
   ======================================== */
@media (max-width: 640px) {
  .section {
    padding: var(--space-lg) var(--space-sm);
  }

  .hero {
    padding-bottom: var(--space-xl);
  }

  .comparison-table {
    font-size: 0.75rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--space-xs);
  }

  .stats-grid {
    gap: var(--space-sm);
  }
}