/* ========================================
   Calisthenics Workout & Macro Tracker
   Landing Page Styles
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #121218;
  --color-bg-card: #1a1a24;
  --color-bg-card-hover: #222230;

  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0b0;
  --color-text-muted: #6b6b7b;

  --color-accent-primary: #7c3aed;
  --color-accent-secondary: #a855f7;
  --color-accent-tertiary: #c084fc;

  --color-gradient-start: #7c3aed;
  --color-gradient-mid: #a855f7;
  --color-gradient-end: #ec4899;

  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

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

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* Background Effects */
.bg-gradient {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.bg-gradient::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
  animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {

  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }

  33% {
    transform: translate(2%, 2%) rotate(1deg);
  }

  66% {
    transform: translate(-1%, 1%) rotate(-1deg);
  }
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-7xl);
  }

  h2 {
    font-size: var(--font-size-5xl);
  }
}

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

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

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

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Header / Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.header.scrolled {
  padding: var(--spacing-sm) 0;
  background: rgba(10, 10, 15, 0.95);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  display: none;
}

@media (min-width: 768px) {
  .nav-cta {
    display: block;
  }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
  color: white;
  box-shadow: var(--shadow-md), 0 0 20px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(124, 58, 237, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--color-text-primary);
}

.btn-store {
  background: var(--color-bg-card);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  min-width: 180px;
}

.btn-store:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-store-icon {
  width: 28px;
  height: 28px;
}

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

.btn-store-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.btn-store-name {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-4xl) 0;
  padding-top: calc(var(--spacing-4xl) + 80px);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

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

@media (min-width: 1024px) {
  .hero-text {
    text-align: left;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-accent-tertiary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease forwards;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.hero-title {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

.hero-tagline {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease 0.15s forwards;
  opacity: 0;
}

@media (min-width: 768px) {
  .hero-tagline {
    font-size: var(--font-size-3xl);
  }
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  max-width: 500px;
  animation: fadeInUp 0.6s ease 0.25s forwards;
  opacity: 0;
}

@media (min-width: 1024px) {
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
}

@media (min-width: 480px) {
  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .hero-buttons {
    justify-content: flex-start;
  }
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  justify-content: center;
  animation: fadeInUp 0.6s ease 0.4s forwards;
  opacity: 0;
}

@media (min-width: 1024px) {
  .hero-stats {
    justify-content: flex-start;
  }
}

.stat {
  text-align: center;
}

@media (min-width: 1024px) {
  .stat {
    text-align: left;
  }
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Hero Phone Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  animation: fadeIn 1s ease 0.5s forwards;
  opacity: 0;
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 580px;
  background: linear-gradient(145deg, #2a2a35 0%, #1a1a24 100%);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 25px;
  background: #0a0a0f;
  border-radius: 20px;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  border-radius: 30px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-screen-placeholder {
  text-align: center;
  padding: var(--spacing-xl);
}

.phone-screen-placeholder .app-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-lg);
}

.phone-screen-placeholder p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Floating Elements */
.floating-card {
  position: absolute;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  animation: float 6s ease-in-out infinite;
}

.floating-card-1 {
  top: 10%;
  right: -20px;
  animation-delay: 0s;
}

.floating-card-2 {
  bottom: 20%;
  left: -30px;
  animation-delay: 2s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.floating-card-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.floating-card-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}

.floating-card-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ========================================
   Features Section
   ======================================== */
.features {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: var(--font-size-lg);
}

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

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.feature-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.feature-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-5px);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(124, 58, 237, 0.1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(168, 85, 247, 0.2));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xl);
}

.feature-card p {
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
  padding: var(--spacing-4xl) 0;
  background: var(--color-bg-secondary);
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0 auto var(--spacing-lg);
}

.step h3 {
  margin-bottom: var(--spacing-sm);
}

.step p {
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  .step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    left: calc(50% + 40px);
    width: calc(100% - 80px);
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-primary), transparent);
  }
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
  padding: var(--spacing-4xl) 0;
}

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

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.testimonial-stars {
  color: #fbbf24;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.testimonial-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.testimonial-author {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
  padding: var(--spacing-4xl) 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(236, 72, 153, 0.1) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
  text-align: center;
  border: 1px solid rgba(124, 58, 237, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.cta-box h2 {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.cta-box p {
  position: relative;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
}

@media (min-width: 480px) {
  .cta-buttons {
    flex-direction: row;
  }
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-links h4 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background: var(--color-accent-primary);
  color: white;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Legal Pages
   ======================================== */
.legal-page {
  padding: var(--spacing-4xl) 0;
  padding-top: calc(var(--spacing-4xl) + 100px);
}

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

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

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

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

.legal-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

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

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

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

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

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

.mt-1 {
  margin-top: var(--spacing-md);
}

.mt-2 {
  margin-top: var(--spacing-xl);
}

.mt-3 {
  margin-top: var(--spacing-2xl);
}

.mb-1 {
  margin-top: var(--spacing-md);
}

.mb-2 {
  margin-bottom: var(--spacing-xl);
}

.mb-3 {
  margin-bottom: var(--spacing-2xl);
}

/* Responsive hide/show */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hide-desktop {
    display: none !important;
  }
}