/* ==========================================================================
   Pulse by Home Value — styles.css
   Mobile-first. CSS custom properties. No framework.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Brand colors */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #EFF6FF;
  --color-accent: #F59E0B;
  --color-accent-light: #FEF3C7;
  --color-dark: #0F172A;
  --color-body: #334155;
  --color-muted: #64748B;
  --color-light: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-subtle: #E2E8F0;
  --color-success: #16A34A;
  --color-success-light: #DCFCE7;
  --color-error: #DC2626;
  --color-error-light: #FEF2F2;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

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

  /* Layout */
  --container-max: 1200px;
  --container-pad: var(--space-5);

  /* Borders & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.10), 0 4px 12px rgba(15, 23, 42, 0.06);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Nav */
  --nav-height: 64px;
}

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

/* Enforce [hidden] regardless of display rules set by other classes */
[hidden] {
  display: none !important;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-body);
  background-color: var(--color-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

fieldset {
  border: none;
}

/* --------------------------------------------------------------------------
   3. Accessibility
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: var(--space-4);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   4. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-16);
}

.section--alt {
  background-color: var(--color-surface);
}

.section__title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--space-10);
  line-height: 1.2;
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 700;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}
.btn--primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
  transform: translateY(-1px);
}
.btn--primary:active {
  transform: translateY(0);
}

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

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

.btn--full {
  width: 100%;
}

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

/* --------------------------------------------------------------------------
   6. Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-subtle);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: var(--space-4);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav__logo {
  height: 32px;
  width: auto;
}

.nav__separator {
  display: block;
  width: 1px;
  height: 20px;
  background-color: var(--color-subtle);
  flex-shrink: 0;
}

.nav__pulse {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

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

/* Language Toggle */
.nav__lang {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-muted);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  letter-spacing: 0.05em;
}
.lang-btn[aria-pressed="true"],
.lang-btn.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}
.lang-btn:hover {
  color: var(--color-primary);
}

.lang-divider {
  color: var(--color-subtle);
  font-size: var(--font-size-sm);
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}
.nav__hamburger:hover {
  background-color: var(--color-light);
}

.hamburger__line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-5);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-subtle);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  max-height: 0;
  padding: 0;
  transition: max-height var(--transition-base), padding var(--transition-base);
}
.mobile-menu.is-open {
  max-height: 200px;
  padding: var(--space-6) var(--space-5);
}

.mobile-menu__lang {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-menu__cta {
  width: 100%;
  max-width: 280px;
}

/* Hide hamburger on desktop, hide mobile actions on mobile */
.nav__hamburger {
  display: flex;
}
.nav__actions {
  display: none;
}

/* --------------------------------------------------------------------------
   7. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4338CA 100%);
  color: white;
  padding-top: var(--space-16);
  padding-bottom: 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
}

.hero__content {
  text-align: center;
  max-width: 640px;
}

.hero__headline {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  color: white;
}

.hero__subheadline {
  font-size: var(--font-size-lg);
  font-weight: 400;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
}

.hero__cta {
  background-color: var(--color-accent);
  color: var(--color-dark);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
}
.hero__cta:hover {
  background-color: #D97706;
  box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
}

.hero__visual {
  width: 100%;
  max-width: 280px;
  flex-shrink: 0;
}

.phone-mockup {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(15, 23, 42, 0.3));
}

.hero__wave {
  width: 100%;
  line-height: 0;
  margin-top: auto;
}
.hero__wave svg {
  width: 100%;
  height: auto;
  display: block;
}

/* --------------------------------------------------------------------------
   8. Problem Section
   -------------------------------------------------------------------------- */
.problem__cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.problem-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.problem-card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.problem-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.problem-card__desc {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   9. How It Works Section
   -------------------------------------------------------------------------- */
.how__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  position: relative;
}

.how__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
}

.how__step-icon {
  width: 72px;
  height: 72px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.08);
}

.how__step-number {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 800;
  flex-shrink: 0;
  margin-top: calc(-1 * var(--space-6));
  position: relative;
  z-index: 1;
}

.how__step-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-dark);
}

.how__step-desc {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  max-width: 220px;
}

.how__connector {
  width: 2px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-subtle));
  margin: 0 auto;
  border-radius: 2px;
  opacity: 0.4;
}

/* --------------------------------------------------------------------------
   10. Features Section — Flip Cards
   -------------------------------------------------------------------------- */
.features__hint {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin-top: calc(-1 * var(--space-6));
  margin-bottom: var(--space-6);
  font-style: italic;
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

/* Flip card container */
.flip-card {
  perspective: 1000px;
  min-height: 200px;
  cursor: pointer;
  outline: none;
}
.flip-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-lg);
}

.flip-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 200px;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.flip-card:hover .flip-card__inner,
.flip-card.is-flipped .flip-card__inner {
  transform: rotateY(180deg);
}

.flip-card__front,
.flip-card__back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg);
}

/* Front face — reuses feature-card styles */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  height: 100%;
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4338CA 100%);
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.feature-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.feature-card__desc {
  font-size: var(--font-size-base);
  color: var(--color-muted);
  line-height: 1.6;
}

/* Back face */
.flip-card__back {
  background: linear-gradient(135deg, var(--color-primary) 0%, #4338CA 100%);
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.flip-card__back-text {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: white;
  line-height: 1.7;
  text-align: center;
}

/* --------------------------------------------------------------------------
   11. Trust Section
   -------------------------------------------------------------------------- */
.trust__badges {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

.trust__badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-light);
  border: 1px solid var(--color-subtle);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-body);
  width: 100%;
}

.trust__badge-icon {
  display: flex;
  align-items: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   12. Waitlist Form Section
   -------------------------------------------------------------------------- */
.waitlist {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-light) 100%);
}

.waitlist__card {
  background: var(--color-surface);
  border: 1px solid var(--color-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  margin-inline: auto;
}

.waitlist__subtitle {
  text-align: center;
  color: var(--color-muted);
  margin-top: calc(-1 * var(--space-6));
  margin-bottom: var(--space-8);
  font-size: var(--font-size-base);
  line-height: 1.6;
}

/* Form elements */
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-subtle);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-dark);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-input.is-error,
.form-select.is-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  font-weight: 500;
  min-height: 1em;
}

.form-insight {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  border-left: 3px solid var(--color-primary);
  line-height: 1.5;
}

/* Radio group */
.form-group--radio .form-label {
  margin-bottom: var(--space-1);
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-body);
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--color-subtle);
  border-radius: var(--radius-full);
  transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
  user-select: none;
}
.radio-label:has(input:checked) {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}
.radio-label:hover {
  border-color: var(--color-primary);
}

.radio-label input[type="radio"] {
  width: 0;
  height: 0;
  opacity: 0;
  position: absolute;
}

/* Checkbox */
.form-group--checkbox {
  flex-direction: row;
  align-items: flex-start;
  flex-wrap: wrap;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  line-height: 1.5;
  flex: 1;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 1.5px solid var(--color-subtle);
  border-radius: 4px;
  appearance: none;
  -webkit-appearance: none;
  background-color: white;
  cursor: pointer;
  margin-top: 1px;
  position: relative;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.checkbox-label input[type="checkbox"]:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}
.checkbox-label input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Success state */
.waitlist__success {
  text-align: center;
  padding: var(--space-12) var(--space-6);
}
.success__icon {
  color: var(--color-success);
  margin-bottom: var(--space-4);
  display: flex;
  justify-content: center;
}
.success__title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: var(--space-3);
}
.success__message {
  font-size: var(--font-size-lg);
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   13. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-10);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
  text-align: center;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.footer__brand-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-decoration: none;
}
.footer__brand-link:hover .footer__pulse-name {
  color: white;
}

.footer__pulse-name {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.footer__tagline {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.45);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}
.footer__links a:hover {
  color: white;
}

.footer__copy {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer__copy-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__copy-link:hover {
  color: rgba(255, 255, 255, 0.7);
}

/* --------------------------------------------------------------------------
   14. Responsive — Tablet (768px+)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  :root {
    --container-pad: var(--space-8);
  }

  .section__title {
    font-size: var(--font-size-3xl);
  }

  /* Nav */
  .nav__hamburger {
    display: none;
  }
  .nav__actions {
    display: flex;
  }
  .mobile-menu {
    display: none !important;
  }

  /* Hero */
  .hero__headline {
    font-size: var(--font-size-4xl);
  }

  /* Problem */
  .problem__cards {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .problem-card {
    flex: 1 1 calc(50% - var(--space-5));
    min-width: 240px;
  }

  /* How */
  .how__steps {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
  }
  .how__step {
    flex: 1;
  }
  .how__connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), var(--color-subtle));
    margin: 36px 0 0 0;
    flex-shrink: 0;
  }

  /* Features */
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Trust */
  .trust__badges {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
  }
  .trust__badge {
    width: auto;
  }

  /* Footer */
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
  .footer__brand {
    align-items: flex-start;
  }
  .footer__brand-link {
    align-items: flex-start;
  }
}

/* --------------------------------------------------------------------------
   15. Responsive — Desktop (1024px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  :root {
    --container-pad: var(--space-10);
  }

  .section__title {
    font-size: var(--font-size-4xl);
  }

  /* Hero */
  .hero__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-16);
  }
  .hero__content {
    text-align: left;
    max-width: 560px;
  }
  .hero__headline {
    font-size: var(--font-size-5xl);
  }
  .hero__visual {
    max-width: 300px;
  }

  /* Problem: 3 columns */
  .problem__cards {
    flex-wrap: nowrap;
  }
  .problem-card {
    flex: 1;
  }

  /* Waitlist card padding */
  .waitlist__card {
    padding: var(--space-12) var(--space-10);
  }
}

/* --------------------------------------------------------------------------
   16. Responsive — Wide (1280px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1280px) {
  .hero__headline {
    font-size: var(--font-size-5xl);
  }
  .hero__visual {
    max-width: 320px;
  }
}

/* --------------------------------------------------------------------------
   17. Loading state for form submission
   -------------------------------------------------------------------------- */
.btn--loading {
  position: relative;
  color: transparent !important;
}
.btn--loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --------------------------------------------------------------------------
   18. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}