/* Sleep Tracker Landing Page Styles */

/* ========== CSS Custom Properties ========== */
:root {
  /* Colors - extracted from app */
  --color-bg: #181534;
  --color-bg-card: #24224A;
  --color-bg-elevated: #302E61;
  --color-primary: #655FF6;
  --color-primary-hover: #7A75F7;
  --color-gradient-start: #2D1B69;
  --color-gradient-end: #181534;
  --color-text-primary: #EFEFEF;
  --color-text-secondary: #D9D8EA;
  --color-text-muted: #AEABC7;
  --color-accent-yellow: #FECE53;
  --color-border: #3C3948;

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

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

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

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

p {
  color: var(--color-text-secondary);
}

.text-accent {
  color: var(--color-accent-yellow);
}

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

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

section {
  padding: var(--spacing-3xl) 0;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(24, 21, 52, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.logo-text {
  font-size: 1.125rem;
  font-weight: 700;
  white-space: nowrap;
}

.header-nav {
  display: none;
}

.header-cta {
  display: flex;
  gap: var(--spacing-xs);
}

@media (min-width: 768px) {
  .header-nav {
    display: flex;
    gap: var(--spacing-lg);
  }

  .header-nav a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
  }

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

  .logo-text {
    font-size: 1.25rem;
  }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ========== Store Buttons ========== */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.25rem;
  background: linear-gradient(135deg, #24224A 0%, #302E61 100%);
  border: 1px solid rgba(101, 95, 246, 0.3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.store-btn:hover {
  background: linear-gradient(135deg, #302E61 0%, #3D3A7A 100%);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -8px rgba(101, 95, 246, 0.3);
}

.store-btn svg {
  width: 24px;
  height: 24px;
}

.store-btn-text {
  text-align: left;
}

.store-btn-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  display: block;
}

.store-btn-name {
  font-size: 1rem;
  font-weight: 600;
}

/* ========== Social Proof ========== */
.hero-trust {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  justify-content: center;
}

.trust-rating {
  color: var(--color-accent-yellow);
  letter-spacing: 1px;
}

.trust-separator {
  opacity: 0.5;
}

/* ========== Hero Section ========== */
.hero {
  padding-top: calc(80px + var(--spacing-3xl));
  padding-bottom: var(--spacing-3xl);
  background: linear-gradient(180deg, var(--color-gradient-start) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.3) 1px, transparent 0),
    radial-gradient(2px 2px at 40% 70%, rgba(255,255,255,0.2) 1px, transparent 0),
    radial-gradient(1px 1px at 60% 20%, rgba(255,255,255,0.3) 1px, transparent 0),
    radial-gradient(2px 2px at 80% 50%, rgba(255,255,255,0.15) 1px, transparent 0),
    radial-gradient(1px 1px at 10% 80%, rgba(255,255,255,0.2) 1px, transparent 0),
    radial-gradient(1px 1px at 90% 90%, rgba(255,255,255,0.25) 1px, transparent 0);
  pointer-events: none;
}

.hero-content {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.hero-title {
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 1.125rem;
  max-width: 500px;
  margin: 0 auto var(--spacing-lg);
}

.hero-image {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  position: relative;
  max-width: 280px;
  margin: 0 auto;
}

.phone-mockup img {
  border-radius: var(--radius-lg);
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
  }

  .hero-text {
    text-align: left;
  }

  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }

  .store-buttons {
    justify-content: flex-start;
  }

  .hero-trust {
    justify-content: flex-start;
  }

  .phone-mockup {
    max-width: 320px;
  }
}

@media (min-width: 1024px) {
  .phone-mockup {
    max-width: 360px;
  }
}

/* ========== Features Section ========== */
.features {
  background: var(--color-bg);
}

.features-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.features-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(101, 95, 246, 0.2);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), #A453F0);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.feature-title {
  color: var(--color-text-primary);
}

.feature-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

@media (min-width: 480px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  /* Center the last two items when we have 5 */
  .features-grid .feature-card:nth-child(4) {
    grid-column: 1 / 2;
  }

  .features-grid .feature-card:nth-child(5) {
    grid-column: 2 / 3;
  }
}

/* ========== Showcase Section ========== */
.showcase {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-gradient-start) 50%, var(--color-bg) 100%);
}

.showcase-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.showcase-item {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
  margin-bottom: var(--spacing-3xl);
}

.showcase-item:last-child {
  margin-bottom: 0;
}

.showcase-image {
  display: flex;
  justify-content: center;
}

.showcase-image .phone-mockup {
  max-width: 260px;
}

.showcase-text h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.showcase-text p {
  font-size: 1rem;
}

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

  .showcase-item:nth-child(even) .showcase-image {
    order: 2;
  }

  .showcase-item:nth-child(even) .showcase-text {
    order: 1;
  }

  .showcase-image .phone-mockup {
    max-width: 300px;
  }
}

/* ========== Footer ========== */
.footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0;
}

.footer-content {
  display: grid;
  gap: var(--spacing-lg);
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer-logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.footer-logo span {
  font-weight: 700;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm) var(--spacing-lg);
}

.footer-links a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-contact {
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.footer-contact p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.footer-contact a {
  display: inline-block;
  color: var(--color-text-primary);
  background: var(--color-bg);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  font-weight: 600;
}

.footer-contact a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr auto;
    text-align: left;
    align-items: start;
  }

  .footer-brand {
    align-items: flex-start;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: right;
  }

  .footer-copyright {
    grid-column: 1 / -1;
    text-align: center;
  }
}

/* ========== Legal Pages ========== */
.legal-page {
  padding-top: calc(80px + var(--spacing-2xl));
  padding-bottom: var(--spacing-3xl);
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: var(--spacing-sm);
}

.legal-updated {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-2xl);
}

.legal-content h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.legal-content p {
  margin-bottom: var(--spacing-md);
}

.legal-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  position: relative;
}

.legal-content li::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0.6em;
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
}

.legal-content a {
  color: var(--color-primary);
  text-decoration: underline;
}

.legal-content a:hover {
  color: var(--color-primary-hover);
}

/* ========== Contact Page ========== */
.contact-page {
  padding-top: calc(80px + var(--spacing-2xl));
  padding-bottom: var(--spacing-3xl);
  min-height: 100vh;
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-content h1 {
  margin-bottom: var(--spacing-sm);
}

.contact-intro {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-2xl);
}

.contact-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.contact-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary), #A453F0);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
}

.contact-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.contact-card h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.contact-card p {
  margin-bottom: var(--spacing-md);
}

.contact-email {
  display: inline-block;
  color: var(--color-text-primary);
  background: var(--color-bg);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.contact-email:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -8px rgba(101, 95, 246, 0.3);
}

.contact-info {
  text-align: left;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.contact-info h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.contact-info ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.contact-info li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  position: relative;
}

.contact-info li::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0.6em;
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
}

.response-time {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ========== Utility Classes ========== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== Animations ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Staggered animation delays */
.fade-in-1 { animation-delay: 0.1s; }
.fade-in-2 { animation-delay: 0.2s; }
.fade-in-3 { animation-delay: 0.3s; }
.fade-in-4 { animation-delay: 0.4s; }
.fade-in-5 { animation-delay: 0.5s; }