/* Main Styles - Crypto Nova Landing Page */

/* Global Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* Section Base */
.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.section__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin: 0 auto;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  position: relative;
}

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

.nav__logo {
  height: 40px;
  width: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav__link:hover {
  color: var(--color-text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  margin-left: var(--space-4);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav__toggle-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero__background {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero__particles {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(255, 215, 0, 0.05) 0%, transparent 50%);
  animation: particle-float 20s ease-in-out infinite;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 215, 0, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 215, 0, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: grid-pulse 4s ease-in-out infinite;
  opacity: 0.3;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__text {
  animation: fadeInLeft 1s ease-out;
}

.hero__title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-black);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.hero__title-accent {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  max-width: 500px;
}

.hero__stats {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero__trust {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-6);
}

.trust__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

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

.trust__badge {
  height: 32px;
  width: auto;
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.trust__badge:hover {
  opacity: 1;
}

.hero__visual {
  animation: fadeInRight 1s ease-out 0.3s both;
  position: relative;
}

.hero__device {
  position: relative;
  transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
  transition: transform var(--transition-slow);
}

.hero__device:hover {
  transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

.hero__device-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
}

.hero__device-glow {
  position: absolute;
  inset: -20px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  opacity: 0.2;
  filter: blur(20px);
  z-index: -1;
  animation: glow 3s ease-in-out infinite;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-text-muted);
}

.scroll__text {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
}

.scroll__arrow {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-text-muted);
  border-top: none;
  border-right: none;
  transform: rotate(-45deg);
  margin: 0 auto;
  animation: scroll-indicator 2s ease-in-out infinite;
}

/* Problem Section */
.problem {
  background: linear-gradient(135deg, 
    rgba(255, 68, 68, 0.05) 0%, 
    var(--color-background) 50%);
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

/* Solution Section */
.solution {
  background: var(--color-background-alt);
}

.solution__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

/* Features Section */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

/* Social Proof Section */
.social-proof {
  background: var(--color-background-alt);
}

.social-proof__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.companies__title,
.testimonials__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
  text-align: center;
}

.companies__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: center;
}

.companies__logo {
  height: 60px;
  width: auto;
  opacity: 0.6;
  transition: opacity var(--transition-base);
  filter: grayscale(100%);
}

.companies__logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.testimonials__grid {
  display: grid;
  gap: var(--space-6);
}

/* Pricing Section */
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

/* Steps Section */
.steps {
  background: var(--color-background-alt);
}

.steps__timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  position: relative;
}

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

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  color: var(--color-background);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  border-radius: 50%;
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-glow);
}

.step__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.step__text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* FAQ Section */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-base);
}

.faq__question:hover {
  color: var(--color-primary);
}

.faq__icon {
  font-size: var(--font-size-2xl);
  color: var(--color-accent);
  transition: transform var(--transition-base);
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) ease-out;
}

.faq__question[aria-expanded="true"] + .faq__answer {
  max-height: 200px;
}

.faq__answer p {
  padding: 0 0 var(--space-6) 0;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* CTA Section */
.cta {
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, 
    rgba(255, 215, 0, 0.1) 0%, 
    transparent 70%);
  z-index: -1;
}

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

.cta__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-tight);
}

.cta__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
}

.cta__buttons {
  margin-bottom: var(--space-8);
}

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

/* Footer */
.footer {
  background: var(--color-background-alt);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-16) 0 var(--space-8) 0;
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__list li {
  margin-bottom: var(--space-2);
}

.footer__link {
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-8);
  text-align: center;
}

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

/* Responsive Design */
@media (max-width: 1280px) {
  .hero__content {
    gap: var(--space-12);
  }
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
}

@media (max-width: 768px) {
  .nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav__menu.is-open {
    display: flex;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .section {
    padding: var(--space-16) 0;
  }
  
  .section__title {
    font-size: var(--font-size-3xl);
  }
  
  .section__subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero__content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .hero__title {
    font-size: var(--font-size-4xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-lg);
    max-width: none;
  }
  
  .hero__stats {
    justify-content: center;
    gap: var(--space-6);
  }
  
  .hero__cta {
    flex-direction: column;
    align-items: center;
  }
  
  .social-proof__content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .companies__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .footer__brand {
    max-width: none;
  }
}

@media (max-width: 375px) {
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__stats {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .companies__grid {
    grid-template-columns: 1fr;
  }
  
  .steps__timeline {
    grid-template-columns: 1fr;
  }
  
  .cta__title {
    font-size: var(--font-size-3xl);
  }
}