/* ============================================
   Kindred Cards — Relationship Connection Games
   Design System
   ============================================ */

:root {
  /* Warm, soft color palette */
  --color-cream: #faf8f5;
  --color-cream-dark: #f5f0e8;
  --color-sand: #ebe6de;
  --color-stone: #8b8579;
  --color-warm-gray: #5c5650;
  --color-charcoal: #2d2926;
  --color-accent: #c47b6b;
  --color-accent-light: #dfa69a;
  --color-accent-dark: #a85d4d;
  --color-success: #6b8f71;
  --color-white: #ffffff;
  
  /* Typography */
  --font-heading: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing & Layout */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-soft: 0 4px 24px rgba(45, 41, 38, 0.06);
  --shadow-medium: 0 8px 40px rgba(45, 41, 38, 0.08);
  --shadow-card: 0 12px 48px rgba(45, 41, 38, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.35s ease;
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Max widths */
  --max-width-narrow: 640px;
  --max-width-content: 800px;
  --max-width-wide: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

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

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  color: var(--color-charcoal);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-charcoal);
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  color: var(--color-charcoal);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-warm-gray);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--color-stone);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

.section--tight {
  padding: var(--space-3xl) 0;
}

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-lg) 0;
  background: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-medium);
}

.header.scrolled {
  border-bottom-color: var(--color-sand);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  color: var(--color-charcoal);
}

.logo img,
.logo svg {
  height: 36px;
  width: auto;
}

.footer .logo img,
.footer .logo svg {
  color: var(--color-white);
}

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

.nav__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-warm-gray);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-accent);
}

/* Mobile menu */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-sm);
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-charcoal);
  transition: 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);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-medium);
  text-align: center;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn--secondary {
  background: var(--color-white);
  color: var(--color-charcoal);
  border: 2px solid var(--color-sand);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
}

.btn--ghost:hover {
  background: rgba(196, 123, 107, 0.1);
}

.btn--large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1.1rem;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--space-4xl)) var(--space-xl) var(--space-4xl);
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
}

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

.hero__eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.6s ease forwards;
}

.hero__title {
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

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

.hero__text {
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero__visual {
  display: none;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* How It Works */
.how-it-works {
  background: var(--color-white);
}

.how-it-works .section__header {
  max-width: var(--max-width-content);
  margin: 0 auto var(--space-3xl);
  text-align: center;
}

.steps {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-2xl);
}

.step {
  display: flex;
  gap: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-medium);
}

.step:hover {
  transform: translateY(-4px);
}

.step__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  border-radius: var(--radius-md);
}

.step__content h3 {
  margin-bottom: var(--space-sm);
}

.step__content p {
  margin-bottom: 0;
}

/* Benefits Section */
.benefits {
  background: var(--color-cream-dark);
}

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

.benefit-card {
  padding: var(--space-2xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: all var(--transition-medium);
}

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

.benefit-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(196, 123, 107, 0.15);
  color: var(--color-accent);
  font-size: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.benefit-card h3 {
  margin-bottom: var(--space-sm);
}

.benefit-card p {
  margin-bottom: 0;
}

/* Product Preview */
.product-preview {
  background: var(--color-cream);
}

.product-preview__inner {
  display: grid;
  gap: var(--space-3xl);
  align-items: center;
}

.product-preview__content h2 {
  margin-bottom: var(--space-md);
}

.product-preview__content .lead {
  margin-bottom: var(--space-xl);
}

.product-preview__visual {
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(145deg, var(--color-sand) 0%, var(--color-cream-dark) 100%);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-preview__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c47b6b' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.product-preview__placeholder {
  font-family: var(--font-heading);
  font-size: 4rem;
  color: var(--color-accent);
  opacity: 0.4;
}

/* Testimonials */
.testimonials {
  background: var(--color-white);
}

.testimonials__grid {
  display: grid;
  gap: var(--space-xl);
}

.testimonial {
  padding: var(--space-2xl);
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
}

.testimonial__quote {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-charcoal);
  margin-bottom: var(--space-lg);
}

.testimonial__author {
  font-weight: 600;
  color: var(--color-warm-gray);
  font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta-section h2,
.cta-section p {
  color: var(--color-white);
}

.cta-section p {
  opacity: 0.9;
}

.cta-section .lead {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-xl);
}

.cta-section .btn--secondary {
  background: var(--color-white);
  color: var(--color-accent);
  border-color: var(--color-white);
}

.cta-section .btn--secondary:hover {
  background: var(--color-cream);
  color: var(--color-accent-dark);
  border-color: var(--color-cream);
}

/* Footer */
.footer {
  background: var(--color-charcoal);
  color: var(--color-sand);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__inner {
  display: grid;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  display: flex;
  align-items: center;
}

.footer__brand img,
.footer__brand svg {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
}

.footer__link {
  color: var(--color-sand);
  font-size: 0.95rem;
}

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

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: var(--color-stone);
}

/* Page Header (for inner pages) */
.page-header {
  padding: calc(80px + var(--space-4xl)) var(--space-xl) var(--space-3xl);
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-charcoal);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--color-sand);
  border-radius: var(--radius-md);
  background: var(--color-white);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

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

/* More Coming Soon */
.coming-soon {
  padding: var(--space-3xl);
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-sand);
  text-align: center;
}

.coming-soon h3 {
  margin-bottom: var(--space-sm);
}

.coming-soon p {
  margin-bottom: 0;
}

/* Community Page */
.community-hero {
  padding: var(--space-3xl) 0;
}

.community-hero .lead {
  max-width: var(--max-width-content);
  margin: 0 auto var(--space-xl);
}

.newsletter-box {
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
  padding: var(--space-2xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-medium);
}

/* Responsive */
@media (min-width: 640px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .hero {
    padding-left: var(--space-3xl);
    padding-right: var(--space-3xl);
  }
  
  .product-preview__inner {
    grid-template-columns: 1fr 1fr;
  }
  
  .product-preview__inner.reverse {
    direction: rtl;
  }
  
  .product-preview__inner.reverse > * {
    direction: ltr;
  }
  
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
  }
  
  .hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
  }
  
  .hero__visual-inner {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(145deg, var(--color-accent-light) 0%, var(--color-accent) 50%, var(--color-accent-dark) 100%);
    border-radius: 50%;
    opacity: 0.15;
    position: absolute;
  }
  
  .hero__visual-inner:nth-child(2) {
    width: 70%;
    max-width: 280px;
    opacity: 0.2;
    animation: float 6s ease-in-out infinite;
  }
  
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
  }
  
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .benefits__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(80px + var(--space-2xl)) var(--space-xl);
    gap: var(--space-lg);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    transition: right var(--transition-medium);
  }
  
  .nav.open {
    right: 0;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .form__row {
    grid-template-columns: 1fr;
  }
}