/* ===========================
   ReFocus Phone — Design System
   =========================== */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #faf8f5;
  --color-bg-alt: #f5f0eb;
  --color-bg-dark: #1a1a1a;
  --color-bg-dark-alt: #2d2d2d;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-text-light: #faf8f5;
  --color-accent: #4a6350;
  --color-accent-light: #5e7d66;
  --color-accent-soft: rgba(74, 99, 80, 0.08);
  --color-blue-gray: #8a9aa5;
  --color-border: rgba(26, 26, 26, 0.08);
  --color-border-dark: rgba(255, 255, 255, 0.08);
  --color-card: #ffffff;
  --color-card-dark: #232323;
  --color-success: #4a6350;
  --color-error: #c44;

  /* Typography */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 100px;

  /* Shadows */
  --shadow-soft: 0 2px 20px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.10);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  font-size: clamp(1rem, 1.1vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 640px;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

/* --- Layout Utilities --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

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

.text-center p {
  margin-left: auto;
  margin-right: auto;
}

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* staggered children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 0.12s; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 0.19s; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 0.26s; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 0.33s; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 0.40s; }

/* ===========================
   NAVIGATION
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition-smooth);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  color: var(--color-text-light) !important;
  background: var(--color-bg-dark);
  padding: 0.55rem 1.4rem;
  border-radius: var(--radius-pill);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.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);
}

/* ===========================
   CTA BUTTONS
   =========================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-light);
  background: var(--color-bg-dark);
  padding: 1rem 2.2rem;
  border-radius: var(--radius-pill);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  padding: 0.9rem 1.8rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--color-text);
  background: var(--color-accent-soft);
}

/* ===========================
   1. HERO SECTION
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + var(--space-lg));
  padding-bottom: var(--space-xl);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  overflow: hidden;
}

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

.hero-content {
  max-width: 560px;
}

.hero-content h1 {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.hero-content h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.2vw, 1.2rem) !important;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
}

.hero-tag svg {
  width: 14px;
  height: 14px;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-image img {
  max-width: 420px;
  width: 100%;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.12));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ===========================
   2. PROBLEM SECTION
   =========================== */
.problem {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--space-2xl) 0;
}

.problem h2 {
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.problem p {
  color: rgba(255, 255, 255, 0.65);
}

.problem-highlight {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem) !important;
  font-family: var(--font-heading);
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 400;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  max-width: 700px;
}

.pain-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  max-width: 800px;
}

.pain-point {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition-fast);
}

.pain-point:hover {
  background: rgba(255, 255, 255, 0.07);
}

.pain-point-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.pain-point p {
  font-size: 0.95rem !important;
  color: rgba(255, 255, 255, 0.7) !important;
  line-height: 1.5;
}

/* ===========================
   3. SOLUTION SECTION
   =========================== */
.solution {
  padding: var(--space-2xl) 0;
}

.solution-header {
  margin-bottom: var(--space-xl);
}

.solution-header h2 {
  margin-bottom: var(--space-sm);
}

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

.solution-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.solution-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.solution-card h3 {
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.solution-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.solution-card ul {
  list-style: none;
  margin-top: var(--space-sm);
}

.solution-card ul li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.35rem 0;
  padding-left: 1.2rem;
  position: relative;
}

.solution-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  transform: translateY(-50%);
}

/* Keep card */
.solution-card.keep {
  border-color: rgba(74, 99, 80, 0.2);
}

.solution-card.keep .solution-card-icon {
  background: rgba(74, 99, 80, 0.1);
}

/* Remove card */
.solution-card.remove .solution-card-icon {
  background: rgba(196, 68, 68, 0.08);
}

/* Add card */
.solution-card.add {
  background: var(--color-bg-dark);
  border-color: transparent;
}

.solution-card.add h3 {
  color: var(--color-text-light);
}

.solution-card.add p {
  color: rgba(255, 255, 255, 0.65);
}

.solution-card.add ul li {
  color: rgba(255, 255, 255, 0.65);
}

.solution-card.add ul li::before {
  background: var(--color-accent-light);
}

.solution-card.add .solution-card-icon {
  background: rgba(255, 255, 255, 0.08);
}

/* ===========================
   4. PRODUCT PREVIEW
   =========================== */
.preview {
  background: var(--color-bg-alt);
  padding: var(--space-2xl) 0;
}

.preview-header {
  margin-bottom: var(--space-xl);
}

.preview-header h2 {
  margin-bottom: var(--space-sm);
}

.preview-screens {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.preview-screen {
  text-align: center;
}

.preview-screen img {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-smooth);
}

.preview-screen:hover img {
  transform: scale(1.03);
}

.preview-screen h3 {
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.preview-screen p {
  font-size: 0.9rem;
  margin: 0 auto;
  max-width: 280px;
}

/* Scenarios */
.scenarios {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.scenario {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.scenario:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.scenario-icon {
  font-size: 1.6rem;
  margin-bottom: var(--space-xs);
}

.scenario h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}

.scenario p {
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ===========================
   5. FEATURES SECTION
   =========================== */
.features {
  padding: var(--space-2xl) 0;
}

.features-header {
  margin-bottom: var(--space-xl);
}

.features-header h2 {
  margin-bottom: var(--space-sm);
}

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

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

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.6rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.feature-card p {
  font-size: 0.9rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===========================
   6. GROWTH VALUE SECTION
   =========================== */
.value {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}

.value::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 99, 80, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.value-header {
  margin-bottom: var(--space-xl);
}

.value-header h2 {
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.value-header p {
  color: rgba(255, 255, 255, 0.6);
}

.value-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.value-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.value-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-3px);
}

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

.value-card h3 {
  color: var(--color-text-light);
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.value-card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

.value-quote {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
  font-style: italic;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===========================
   7. WHO IT'S FOR
   =========================== */
.audience {
  padding: var(--space-2xl) 0;
}

.audience-header {
  margin-bottom: var(--space-xl);
}

.audience-header h2 {
  margin-bottom: var(--space-sm);
}

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

.persona-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.persona-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.persona-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.persona-card:hover::before {
  opacity: 1;
}

.persona-emoji {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.persona-card h3 {
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.persona-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===========================
   8. WAITLIST SECTION
   =========================== */
.waitlist {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  padding: var(--space-2xl) 0;
}

.waitlist-inner {
  max-width: 640px;
  margin: 0 auto;
}

.waitlist-header {
  margin-bottom: var(--space-lg);
}

.waitlist-header h2 {
  margin-bottom: var(--space-sm);
}

.waitlist-header p {
  margin-left: auto;
  margin-right: auto;
}

.waitlist-incentive {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  background: var(--color-accent-soft);
  padding: 0.8rem var(--space-md);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 500;
}

.waitlist-form {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
}

.form-section-title {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  margin-top: var(--space-md);
}

.form-section-title:first-child {
  margin-top: 0;
}

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.form-group label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-group input[type="email"],
.form-group input[type="text"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b6b6b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* Radio group */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}

.radio-option:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.radio-option input[type="radio"] {
  accent-color: var(--color-accent);
  width: 16px;
  height: 16px;
}

.radio-option.selected {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

/* Checkbox */
.checkbox-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.checkbox-option input[type="checkbox"] {
  accent-color: var(--color-accent);
  width: 16px;
  height: 16px;
}

.form-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-md) 0;
}

.form-submit {
  margin-top: var(--space-md);
}

.form-submit .btn-primary {
  width: 100%;
  justify-content: center;
  font-size: 1.05rem;
  padding: 1.1rem 2rem;
}

/* ===========================
   9. FAQ SECTION
   =========================== */
.faq {
  padding: var(--space-2xl) 0;
}

.faq-header {
  margin-bottom: var(--space-xl);
}

.faq-header h2 {
  margin-bottom: var(--space-sm);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md) 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  transition: color var(--transition-fast);
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-accent-soft);
  transition: transform var(--transition-smooth);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth), padding var(--transition-smooth);
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: var(--space-md);
}

.faq-answer p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ===========================
   10. FOOTER
   =========================== */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--space-lg) 0 var(--space-md);
}

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

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
}

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

.footer-text {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-vision {
  width: 100%;
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-vision p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.4);
  font-style: italic;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg);
  }

  .hero-content {
    max-width: 600px;
    margin: 0 auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-tags {
    justify-content: center;
  }

  .hero-image img {
    max-width: 320px;
  }

  .solution-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .preview-screens {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 320px;
    margin: 0 auto var(--space-xl);
  }

  .scenarios {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .value-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .persona-cards {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  section {
    padding: var(--space-lg) 0;
  }

  .problem,
  .value,
  .preview {
    padding: var(--space-xl) 0;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(250, 248, 245, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    gap: 0.3rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.8rem var(--space-sm);
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover {
    background: var(--color-accent-soft);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-cta {
    text-align: center;
    display: block !important;
    padding: 0.8rem var(--space-sm) !important;
  }

  .nav-toggle {
    display: flex;
  }

  .pain-points {
    grid-template-columns: 1fr;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .value-cards {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin: 0 auto var(--space-lg);
  }

  .waitlist-form {
    padding: var(--space-md);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--space-md));
    padding-bottom: var(--space-lg);
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero-ctas .btn-primary,
  .hero-ctas .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .hero-image img {
    max-width: 260px;
  }
}

/* ===========================
   THANK YOU PAGE
   =========================== */
.thankyou {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.thankyou-card {
  max-width: 560px;
  width: 100%;
  text-align: center;
}

.thankyou-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 2rem;
}

.thankyou-card h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: var(--space-sm);
}

.thankyou-card > p {
  margin: 0 auto var(--space-lg);
}

.thankyou-list {
  list-style: none;
  text-align: left;
  margin-bottom: var(--space-lg);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.thankyou-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.thankyou-list li:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.thankyou-list li span:first-child {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.thankyou-bonus {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  text-align: left;
}

.thankyou-bonus h3 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.thankyou-bonus textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  resize: vertical;
  min-height: 80px;
  margin-bottom: var(--space-sm);
  transition: border-color var(--transition-fast);
}

.thankyou-bonus textarea:focus {
  border-color: var(--color-accent);
}

.thankyou-bonus .btn-secondary {
  width: 100%;
  justify-content: center;
}