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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Design System Colors (HSL) */
:root {
  --color-black: hsl(0, 0%, 5%);
  --color-white: hsl(0, 0%, 100%);
  --color-yellow: hsl(45, 100%, 51%);
  --color-yellow-dark: hsl(40, 100%, 45%);
  --color-gray-light: hsl(0, 0%, 96%);
  --color-gray: hsl(0, 0%, 40%);
  --color-gray-dark: hsl(0, 0%, 15%);
  --color-destructive: hsl(0, 84%, 60%);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 900;
  text-decoration: none;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.05em;
}

.btn-striking {
  background: linear-gradient(90deg, var(--color-yellow) 0%, var(--color-yellow-dark) 100%);
  color: var(--color-black);
  box-shadow: 0 25px 70px -20px hsla(45, 100%, 51%, 0.6);
}

.btn-striking:hover {
  transform: translateY(-2px);
  box-shadow: 0 30px 80px -20px hsla(45, 100%, 51%, 0.8);
}

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

.btn-outline-light:hover {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-outline-light-bold {
  background: transparent;
  color: var(--color-white);
  border: 4px solid var(--color-white);
  padding: 1.5rem 2.5rem;
  font-size: 1.25rem;
}

.btn-outline-light-bold:hover {
  background: var(--color-white);
  color: var(--color-black);
}

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

.hero-bg-accent {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: var(--color-yellow);
  opacity: 0.1;
  transform: skewX(12deg);
}

.hero-bg-blur {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24rem;
  height: 24rem;
  background: var(--color-yellow);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.2;
}

.hero-container {
  padding-top: 5rem;
  padding-bottom: 5rem;
  position: relative;
  z-index: 10;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6rem;
  align-items: center;
}

@media (min-width: 1250px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-badge-wrapper {
  display: inline-block;
}

.hero-badge {
  background: var(--color-yellow);
  padding: 0.75rem 1.5rem;
  transform: rotate(-2deg);
  box-shadow: 0 10px 40px -5px hsla(0, 0%, 5%, 0.3);
}

.hero-badge-text {
  color: var(--color-black);
  font-weight: 900;
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-heading {
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
  letter-spacing: -0.02em;
}

@media (min-width: 640px) {
  .hero-heading {
    font-size: 3.75rem;
  }
}

@media (min-width: 768px) {
  .hero-heading {
    font-size: 4.5rem;
  }
}

@media (min-width: 1024px) {
  .hero-heading {
    font-size: 6rem;
  }
}

.hero-heading-accent {
  display: block;
  color: var(--color-yellow);
  margin-top: 1rem;
  font-style: italic;
}

.hero-description-box {
  background: hsla(45, 100%, 51%, 0.2);
  border-left: 8px solid var(--color-yellow);
  padding: 1.5rem;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--color-white);
  font-weight: 700;
}

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

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
  }
}

.hero-buttons .btn {
  padding: 1.75rem 2rem;
  font-size: 1.125rem;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: hsla(0, 0%, 100%, 0.8);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-feature-dot {
  width: 0.75rem;
  height: 0.75rem;
  background: var(--color-yellow);
}

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

.hero-image-glow {
  position: absolute;
  inset: 0;
  background: var(--color-yellow);
  opacity: 0.3;
  filter: blur(100px);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.5;
  }
}

.hero-image-wrapper {
  position: relative;
}

.hero-image-bg {
  position: absolute;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 600 / 450;
  background: var(--color-black);
  transform: rotate(6deg);
}

@media (min-width: 650px) {
  .hero-image-bg {
    width: 600px;
  }
}

.hero-image {
  position: relative;
  box-shadow: 0 25px 50px -12px hsla(0, 0%, 0%, 0.5);
  transform: rotate(6deg);
  width: 100%;
  max-width: 600px;
  aspect-ratio: 600 / 450;
}

@media (min-width: 650px) {
  .hero-image {
    width: 600px;
  }
}

/* Stats Section */
.stats-section {
  background: var(--color-yellow);
  padding: 3rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  text-align: center;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-black);
}

@media (min-width: 768px) {
  .stat-number {
    font-size: 3rem;
  }
}

.stat-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: hsla(0, 0%, 5%, 0.7);
  text-transform: uppercase;
  margin-top: 0.5rem;
}

/* Problem Section */
.problem-section {
  padding: 5rem 0;
  background: var(--color-white);
  position: relative;
  overflow: hidden;
}

.problem-bg-text {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 20rem;
  font-weight: 900;
  color: hsla(0, 0%, 90%, 0.2);
  user-select: none;
  pointer-events: none;
}

.problem-header {
  max-width: 56rem;
  margin-bottom: 4rem;
  position: relative;
}

.section-heading {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  color: var(--color-black);
}

@media (min-width: 768px) {
  .section-heading {
    font-size: 3.75rem;
  }
}

.text-destructive {
  color: var(--color-destructive);
}

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

.section-divider {
  height: 0.5rem;
  width: 8rem;
  background: var(--color-yellow);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

.problem-card {
  padding: 2rem;
  border: 4px solid var(--color-destructive);
  background: hsla(0, 84%, 60%, 0.05);
  transition: transform 0.3s;
}

.problem-card:hover {
  transform: scale(1.05);
}

.problem-icon {
  width: 3rem;
  height: 3rem;
  color: var(--color-destructive);
  margin-bottom: 1rem;
}

.problem-card-title {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 0.75rem;
  color: var(--color-black);
  text-transform: uppercase;
}

.problem-card-text {
  color: var(--color-gray);
  font-weight: 600;
}

/* Solution Section */
.solution-section {
  padding: 5rem 0;
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}

.solution-diagonal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 8rem;
  background: var(--color-yellow);
  transform: skewY(-3deg);
  transform-origin: top left;
}

.solution-container {
  padding-top: 4rem;
  position: relative;
}

.solution-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-heading-light {
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .section-heading-light {
    font-size: 3.75rem;
  }
}

.section-divider-center {
  height: 0.5rem;
  width: 12rem;
  background: var(--color-yellow);
  margin: 0 auto;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 75rem;
  margin: 0 auto;
}

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

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

.solution-card {
  padding: 2rem;
  transition: all 0.3s;
  box-shadow: 0 25px 50px -12px hsla(0, 0%, 0%, 0.5);
}

.solution-card:hover {
  transform: scale(1.05);
}

.solution-card-yellow {
  background: var(--color-yellow);
}

.solution-card-white {
  background: var(--color-white);
  border: 4px solid var(--color-yellow);
}

.solution-icon-wrapper {
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.solution-icon-dark {
  background: var(--color-black);
}

.solution-icon-yellow {
  background: var(--color-yellow);
}

.solution-icon {
  width: 2rem;
  height: 2rem;
}

.solution-icon-dark .solution-icon {
  color: var(--color-yellow);
}

.solution-icon-yellow .solution-icon {
  color: var(--color-black);
}

.solution-card-title-dark {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 0.75rem;
  color: var(--color-black);
  text-transform: uppercase;
}

.solution-card-text-dark {
  color: hsla(0, 0%, 5%, 0.8);
  font-weight: 700;
}

.solution-card-text-light {
  color: var(--color-black);
  font-weight: 700;
}

/* How It Works Section */
.howto-section {
  padding: 5rem 0;
  background: var(--color-white);
}

.howto-header {
  text-align: center;
  margin-bottom: 4rem;
}

.howto-content {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.howto-item {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .howto-item {
    flex-direction: row;
  }
  
  .howto-item-reverse {
    flex-direction: row-reverse;
  }
}

.howto-number {
  flex-shrink: 0;
  width: 8rem;
  height: 8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.75rem;
  font-weight: 900;
  border: 8px solid var(--color-yellow);
}

.howto-number-dark {
  background: var(--color-black);
  color: var(--color-white);
}

.howto-number-yellow {
  background: var(--color-yellow);
  color: var(--color-black);
  border-color: var(--color-black);
}

.howto-card {
  flex: 1;
  padding: 2rem;
  border: 4px solid var(--color-black);
  box-shadow: 0 10px 40px -5px hsla(0, 0%, 5%, 0.15);
  transition: box-shadow 0.3s;
}

.howto-card:hover {
  box-shadow: 0 25px 50px -12px hsla(0, 0%, 5%, 0.25);
}

.howto-card-title {
  font-size: 1.875rem;
  font-weight: 900;
  margin-bottom: 1rem;
  color: var(--color-black);
  text-transform: uppercase;
}

.howto-card-text {
  color: var(--color-gray);
  font-size: 1.125rem;
  font-weight: 700;
}

/* CTA Section */
.cta-section {
  padding: 6rem 0;
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}

.cta-bg-skew {
  position: absolute;
  inset: 0;
  background: var(--color-yellow);
  opacity: 0.1;
  transform: skewY(-6deg);
}

.cta-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 15rem;
  font-weight: 900;
  color: var(--color-yellow);
  opacity: 0.05;
  user-select: none;
  pointer-events: none;
}

@media (min-width: 768px) {
  .cta-bg-text {
    font-size: 25rem;
  }
}

.cta-container {
  position: relative;
}

.cta-content {
  max-width: 64rem;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.cta-heading {
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
}

@media (min-width: 768px) {
  .cta-heading {
    font-size: 4.5rem;
  }
}

.cta-heading-accent {
  display: block;
  color: var(--color-yellow);
  margin-top: 1rem;
}

.cta-highlight {
  background: hsla(45, 100%, 51%, 0.2);
  border-left: 8px solid var(--color-yellow);
  padding: 2rem;
  display: inline-block;
}

.cta-highlight-text {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-white);
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  justify-content: center;
  padding-top: 2rem;
}

@media (min-width: 640px) {
  .cta-buttons {
    flex-direction: row;
  }
}

.cta-buttons .btn {
  padding: 2rem 3rem;
  font-size: 1.25rem;
}

.cta-features {
  padding-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  color: hsla(0, 0%, 100%, 0.8);
  font-size: 0.875rem;
  font-weight: 900;
  text-transform: uppercase;
}

.cta-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.cta-icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-yellow);
}

/* Footer */
.footer {
  padding: 3rem 0;
  background: var(--color-black);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  color: var(--color-white);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-brand-text {
  font-size: 1.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
}

.footer-link {
  color: var(--color-white);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-link:hover {
  color: var(--color-yellow);
}

.footer-copyright {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
}