/* AquaSnap Marketing Site — Design System */

:root {
  /* Colors (from mobile theme) */
  --color-bg: #000000;
  --color-surface: #121212;
  --color-surface-elevated: #1a1a1a;
  --color-surface-highest: #262626;
  --color-border: #262626;
  --color-border-light: #363636;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #A8A8A8;
  --color-text-tertiary: #666666;
  --color-accent: #0095F6;
  --color-accent-ocean: #00B4D8;
  --color-danger: #ED4956;
  --color-success: #58C322;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Spacing (4/8-point grid) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;

  /* Layout */
  --max-width: 1080px;
  --max-width-narrow: 720px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;

  /* Transitions */
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-size: 16px;
  line-height: 1.6;
}

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

a:hover {
  color: var(--color-accent-ocean);
}

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

/* ==================== Layout ==================== */

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

.container--narrow {
  max-width: var(--max-width-narrow);
}

section {
  padding: var(--space-4xl) 0;
}

/* ==================== Navigation ==================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav__logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav__links a {
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--color-text-primary);
}

.nav__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__hamburger {
    display: block;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-lg);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links.active {
    display: flex;
  }

  .nav__links a {
    font-size: 16px;
  }
}

/* ==================== Hero ==================== */

.hero {
  padding-top: calc(64px + var(--space-3xl));
  padding-bottom: var(--space-3xl);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero__copy {
  text-align: left;
}

.hero__title {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero__title span {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.hero__mockup {
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
  }
  .hero__copy { text-align: center; }
  .hero__subtitle { margin-left: auto; margin-right: auto; }
  .signup-form { margin-left: auto; margin-right: auto; }
}

/* Signup form */
.signup-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 460px;
  margin-bottom: var(--space-sm);
}

.signup-form--center {
  margin-left: auto;
  margin-right: auto;
}

.signup-form__input {
  flex: 1;
  padding: 14px var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-text-primary);
  font-size: 16px;
  font-family: var(--font-family);
  outline: none;
  transition: border-color var(--transition);
}

.signup-form__input::placeholder {
  color: var(--color-text-tertiary);
}

.signup-form__input:focus {
  border-color: var(--color-accent);
}

.signup-form__btn {
  padding: 14px var(--space-lg);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  border: none;
  border-radius: var(--border-radius);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), transform var(--transition);
}

.signup-form__btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.signup-form__btn:active {
  transform: translateY(0);
}

.signup-form__btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.signup-message {
  font-size: 14px;
  margin-top: var(--space-sm);
  min-height: 20px;
}

.signup-message--success {
  color: var(--color-success);
}

.signup-message--error {
  color: var(--color-danger);
}

@media (max-width: 480px) {
  .signup-form {
    flex-direction: column;
  }
}

.hero__note {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

/* ==================== Features ==================== */

.features {
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-3xl);
  letter-spacing: -0.01em;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.feature-card__icon {
  font-size: 40px;
  margin-bottom: var(--space-md);
}

.feature-card__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature-card__desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .features__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

/* ==================== How It Works ==================== */

.how-it-works {
  border-top: 1px solid var(--color-border);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.step__number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.step__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step__desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

/* ==================== Pricing ==================== */

.pricing {
  border-top: 1px solid var(--color-border);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.pricing-card--pro {
  border: 2px solid transparent;
  background-image: linear-gradient(var(--color-surface), var(--color-surface)),
                    linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  background-origin: border-box;
  background-clip: padding-box, border-box;
  position: relative;
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card__name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.pricing-card__price {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: var(--space-xs);
}

.pricing-card__price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.pricing-card__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-card__features {
  list-style: none;
}

.pricing-card__features li {
  font-size: 15px;
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.pricing-card__features li:last-child {
  border-bottom: none;
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .pricing__grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== FAQ ==================== */

.faq {
  border-top: 1px solid var(--color-border);
}

.faq__list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: 17px;
  font-weight: 600;
  text-align: left;
  padding: var(--space-lg) 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  transition: color var(--transition);
}

.faq-item__question:hover {
  color: var(--color-accent);
}

.faq-item__icon {
  font-size: 20px;
  color: var(--color-text-tertiary);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-item__icon {
  transform: rotate(45deg);
}

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

.faq-item.active .faq-item__answer {
  max-height: 200px;
  padding-bottom: var(--space-lg);
}

.faq-item__answer p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==================== Footer ==================== */

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
}

.footer__logo img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.footer__links a {
  color: var(--color-text-tertiary);
  font-size: 14px;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-text-secondary);
}

.footer__copy {
  width: 100%;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: var(--space-lg);
}

/* ==================== Legal Pages ==================== */

.legal {
  padding-top: calc(64px + var(--space-3xl));
  padding-bottom: var(--space-4xl);
}

.legal h1 {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.legal__date {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2xl);
}

.legal h2 {
  font-size: 22px;
  font-weight: 600;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.legal p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.legal ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal ul li {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.legal a {
  color: var(--color-accent);
}

/* ==================== 404 Page ==================== */

.not-found {
  padding-top: calc(64px + var(--space-4xl));
  padding-bottom: var(--space-4xl);
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.not-found__code {
  font-size: clamp(64px, 15vw, 120px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.not-found__title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.not-found__desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

/* ==================== Buttons ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px var(--space-lg);
  border-radius: var(--border-radius);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-family);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  color: #fff;
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
}

.btn--outline:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text-primary);
}

/* ==================== Phone Mockup ==================== */

.mockup {
  position: relative;
  width: 280px;
  height: 560px;
  background: #1a1a1a;
  border: 2px solid #2a2a2a;
  border-radius: 40px;
  padding: 10px;
  box-shadow:
    0 0 0 3px #0a0a0a,
    0 30px 80px -20px rgba(0, 149, 246, 0.15),
    0 20px 40px -10px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.mockup--hero {
  transform: rotate(-3deg);
  transition: transform 0.4s ease;
}

.mockup--hero:hover {
  transform: rotate(0deg);
}

.mockup__notch {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 22px;
  background: #000;
  border-radius: 12px;
  z-index: 2;
}

.mockup__screen {
  width: 100%;
  height: 100%;
  background: #0a0a1a;
  border-radius: 32px;
  position: relative;
  overflow: hidden;
}

/* Hero camera view */
.mockup__camera-view {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(0, 180, 216, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(0, 149, 246, 0.25) 0%, transparent 50%),
    linear-gradient(180deg, #001a2e 0%, #000814 100%);
  position: relative;
  padding: 60px 20px 20px;
}

.mockup__viewfinder {
  position: absolute;
  top: 35%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 80px;
  border: 2px solid #00B4D8;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(0, 180, 216, 0.5);
}

.mockup__viewfinder::before,
.mockup__viewfinder::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border: 3px solid #00B4D8;
}

.mockup__viewfinder::before {
  top: -3px;
  left: -3px;
  border-right: none;
  border-bottom: none;
}

.mockup__viewfinder::after {
  bottom: -3px;
  right: -3px;
  border-left: none;
  border-top: none;
}

.mockup__id-card {
  position: absolute;
  bottom: 30px;
  left: 16px;
  right: 16px;
  background: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.mockup__id-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-success);
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(88, 195, 34, 0.8);
}

.mockup__id-text {
  flex: 1;
  min-width: 0;
}

.mockup__id-name {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
}

.mockup__id-sci {
  color: #888;
  font-size: 10px;
  line-height: 1.2;
  margin-top: 2px;
}

.mockup__id-badge {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 8px;
  flex-shrink: 0;
}

/* Species detail mockup */
.mockup__screen--species {
  padding: 50px 16px 16px;
}

.mockup__species-header {
  color: #888;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.mockup__species-hero {
  width: 100%;
  height: 160px;
  background:
    radial-gradient(ellipse at 40% 50%, rgba(255, 140, 66, 0.5) 0%, transparent 60%),
    linear-gradient(135deg, #0a2540 0%, #1a3a5c 100%);
  border-radius: 12px;
  margin-bottom: 14px;
}

.mockup__species-name {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
}

.mockup__species-sci {
  color: #888;
  font-size: 11px;
  margin-top: 2px;
  margin-bottom: 10px;
}

.mockup__species-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  background: rgba(0, 149, 246, 0.15);
  color: #00B4D8;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
}

/* Feed timeline mockup */
.mockup__screen--feed {
  padding: 50px 12px 12px;
}

.mockup__feed-header {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  padding: 0 4px;
}

.mockup__feed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.mockup__feed-tile {
  aspect-ratio: 1;
  border-radius: 6px;
}

.mockup__feed-tile:nth-child(1) { background: linear-gradient(135deg, #0a2540, #1a5a8c); }
.mockup__feed-tile:nth-child(2) { background: linear-gradient(135deg, #2d4a1f, #56a839); }
.mockup__feed-tile:nth-child(3) { background: linear-gradient(135deg, #3d1f4a, #8c3a9c); }
.mockup__feed-tile:nth-child(4) { background: linear-gradient(135deg, #4a2d1f, #c27339); }
.mockup__feed-tile:nth-child(5) { background: linear-gradient(135deg, #1f4a4a, #39a8c2); }
.mockup__feed-tile:nth-child(6) { background: linear-gradient(135deg, #4a1f2d, #c23973); }

/* Filter mockup */
.mockup__screen--filter {
  padding: 50px 0 14px;
  display: flex;
  flex-direction: column;
}

.mockup__filter-view {
  flex: 1;
  margin: 0 12px;
  border-radius: 12px;
  background:
    radial-gradient(ellipse at 35% 45%, rgba(255, 150, 100, 0.55) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 60%, rgba(140, 200, 120, 0.5) 0%, transparent 55%),
    radial-gradient(ellipse at 60% 30%, rgba(255, 200, 100, 0.4) 0%, transparent 50%),
    linear-gradient(180deg, #0d2b3e 0%, #0a1828 100%);
}

.mockup__filter-bar {
  display: flex;
  gap: 6px;
  padding: 12px;
  overflow-x: hidden;
}

.mockup__filter-swatch {
  flex-shrink: 0;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: #888;
  font-size: 10px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.03);
}

.mockup__filter-swatch--active {
  color: #fff;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  border-color: transparent;
}

.mockup__filter-slider {
  padding: 6px 16px 12px;
}

.mockup__filter-slider-track {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  position: relative;
}

.mockup__filter-slider-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 65%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-ocean));
  border-radius: 4px;
}

.mockup__filter-slider-thumb {
  position: absolute;
  top: 50%;
  left: 65%;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* Health mockup */
.mockup__screen--health {
  padding: 50px 14px 14px;
}

.mockup__health-header {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.mockup__health-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 8px;
}

.mockup__health-card--warn {
  border-color: rgba(237, 73, 86, 0.3);
  background: rgba(237, 73, 86, 0.08);
}

.mockup__health-severity {
  display: inline-block;
  background: rgba(237, 73, 86, 0.2);
  color: var(--color-danger);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.mockup__health-severity--ok {
  background: rgba(88, 195, 34, 0.15);
  color: var(--color-success);
}

.mockup__health-title {
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
}

.mockup__health-desc {
  color: #999;
  font-size: 10px;
  line-height: 1.4;
  margin-top: 4px;
}

/* ==================== Modes (Instant vs Deep) ==================== */

.modes {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.modes__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.mode-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.mode-card--pro {
  border: 1px solid transparent;
  background-image: linear-gradient(var(--color-surface), var(--color-surface)),
                    linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.mode-card__tag {
  display: inline-block;
  color: var(--color-accent-ocean);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.mode-card--pro .mode-card__tag {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mode-card__title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.mode-card__desc {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .modes__grid { grid-template-columns: 1fr; }
}

/* ==================== Founder's Note ==================== */

.founder {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.founder__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
}

.founder__eyebrow {
  color: var(--color-accent-ocean);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.founder__body {
  color: var(--color-text-secondary);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.founder__body em {
  color: var(--color-text-primary);
  font-style: italic;
}

.founder__sig {
  color: var(--color-text-tertiary);
  font-size: 14px;
  font-style: italic;
  margin-top: var(--space-lg);
}

/* ==================== Proof Strip ==================== */

.proof-strip {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.proof-strip__inner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.proof-item {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.proof-item strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.proof-sep {
  width: 4px;
  height: 4px;
  background: var(--color-border-light);
  border-radius: 50%;
}

@media (max-width: 640px) {
  .proof-sep { display: none; }
  .proof-strip__inner { gap: var(--space-sm) var(--space-md); }
}

/* ==================== Feature Rows ==================== */

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  margin-top: var(--space-3xl);
  padding-top: var(--space-3xl);
  border-top: 1px solid var(--color-border);
}

.feature-row:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: var(--space-2xl);
}

.feature-row--reverse .feature-row__copy { order: 2; }
.feature-row--reverse .feature-row__mockup { order: 1; }

.feature-row__eyebrow {
  display: inline-block;
  color: var(--color-accent-ocean);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.feature-row__title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
}

.feature-row__desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.feature-row__list {
  list-style: none;
}

.feature-row__list li {
  color: var(--color-text-secondary);
  font-size: 15px;
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.feature-row__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  flex-shrink: 0;
}

.feature-row__mockup {
  display: flex;
  justify-content: center;
}

@media (max-width: 900px) {
  .feature-row,
  .feature-row--reverse {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .feature-row--reverse .feature-row__copy { order: 1; }
  .feature-row--reverse .feature-row__mockup { order: 2; }
}

/* ==================== Section Subtitle ==================== */

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 17px;
  margin-top: calc(-1 * var(--space-2xl));
  margin-bottom: var(--space-3xl);
}

/* ==================== How It Works ==================== */

.how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.how-step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: border-color var(--transition);
}

.how-step:hover {
  border-color: var(--color-border-light);
}

.how-step__number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-ocean));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.how-step__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.how-step__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* Floating UI snippets */
.snippet {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  padding: var(--space-sm) var(--space-md);
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  text-align: left;
}

.snippet--filter {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-accent-ocean);
}

.snippet__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(88, 195, 34, 0.6);
}

.snippet--id {
  width: 100%;
  max-width: 200px;
}

.snippet__id-row {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-secondary);
  padding: 3px 0;
}

.snippet__id-row strong {
  color: var(--color-accent);
  font-weight: 600;
}

.snippet--tank {
  text-align: left;
}

.snippet__tank-title {
  color: var(--color-text-primary);
  font-weight: 600;
}

.snippet__tank-count {
  color: var(--color-text-secondary);
  font-size: 12px;
}

@media (max-width: 768px) {
  .how__steps {
    grid-template-columns: 1fr;
  }
}

/* ==================== Final CTA ==================== */

.cta-final {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(0, 149, 246, 0.08) 0%, transparent 60%);
}

.cta-final__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
}

.cta-final__desc {
  color: var(--color-text-secondary);
  font-size: 17px;
  max-width: 500px;
  margin: 0 auto var(--space-xl);
}