/* ========================================
   GOLDEN CSS — AI Fightclub
   Version: v2.0 FULL
   ======================================== */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #e0e0e0;
  background: linear-gradient(180deg, #0a0a0f 0%, #16162a 50%, #0a0a0f 100%);
  min-height: 100vh;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff 0%, #a0b4ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}

h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 32px;
  text-align: center;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #d0d0d0;
  margin-bottom: 12px;
}

p {
  font-weight: 400;
  color: #c0c0c0;
}

/* Header */
header {
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
}

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

.header-content > div {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.logo:hover {
  color: #4a7fff;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 80px 32px 32px;
  gap: 24px;
  transition: right 0.3s ease;
  z-index: 99;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu a {
  color: #ffffff;
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: color 0.3s ease;
}

.mobile-menu a:hover {
  color: #4a7fff;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: #ffffff;
  transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* CTA Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  background: #4a7fff;
  color: #ffffff;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background: #5a8fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 127, 255, 0.3);
}

/* Sections */
section {
  padding: 80px 0;
}

.hero {
  padding: 120px 0 80px;
  text-align: center;
}

.hero .container {
  max-width: 900px;
}

.subhead {
  font-size: 1.25rem;
  font-weight: 500;
  color: #d0d0d0;
  margin-bottom: 16px;
}

.explainer {
  font-size: 1rem;
  color: #a0a0a0;
  margin-bottom: 32px;
}

/* Problem Section */
.problem-section {
  background: rgba(255, 255, 255, 0.02);
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.problem-card {
  padding: 24px;
  border-radius: 16px;
  border: 2px solid;
}

.problem-card.hallucinated {
  background: rgba(255, 68, 68, 0.05);
  border-color: rgba(255, 68, 68, 0.3);
}

.problem-card.verified {
  background: rgba(74, 127, 255, 0.05);
  border-color: rgba(74, 127, 255, 0.3);
}

.card-label {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.problem-card.hallucinated .card-label {
  color: #ff4444;
}

.problem-card.verified .card-label {
  color: #4a7fff;
}

.card-text {
  font-size: 1rem;
  line-height: 1.6;
  color: #d0d0d0;
}

/* Three Cards Section */
.three-cards-section,
.guardrails-section {
  background: rgba(255, 255, 255, 0.02);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(74, 127, 255, 0.3);
  transform: translateY(-4px);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Process Section */
.process-section {
  background: rgba(255, 255, 255, 0.02);
}

.process-list {
  max-width: 860px;
  margin: 48px 0 0 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.process-step {
  position: relative;
  padding-left: 80px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.5s ease;
}

.process-step.visible {
  opacity: 1;
  transform: translateX(0);
}

.process-step::before {
  content: attr(data-number);
  position: absolute;
  left: 0;
  top: 0;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #4a7fff 0%, #5a8fff 100%);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.5rem;
  box-shadow: 0 4px 16px rgba(74, 127, 255, 0.3);
}

.process-step h3 {
  margin-bottom: 16px;
  text-align: left;
}

.process-step p {
  margin-bottom: 12px;
  text-align: left;
}

.what-happens {
  color: #d0d0d0;
}

.why-matters {
  color: #a0a0a0;
  font-size: 0.95rem;
}

.process-quip {
  margin-top: 48px;
  text-align: center;
  font-size: 1.125rem;
  font-style: italic;
  color: #b0b0b0;
}

/* Example Section */
.example-section {
  background: rgba(255, 255, 255, 0.02);
}

.example-box {
  max-width: 860px;
  margin: 32px 0 0 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
}

.example-question {
  font-size: 1.25rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 32px;
  padding: 16px;
  background: rgba(74, 127, 255, 0.1);
  border-left: 4px solid #4a7fff;
  border-radius: 8px;
}

.example-step {
  margin-bottom: 24px;
}

.example-step h4 {
  color: #4a7fff;
  margin-bottom: 12px;
}

.example-step ul {
  list-style: none;
  padding-left: 0;
}

.example-step li {
  padding: 8px 0;
  color: #d0d0d0;
  line-height: 1.6;
}

.example-output {
  margin-top: 32px;
  padding: 24px;
  background: rgba(74, 127, 255, 0.05);
  border: 1px solid rgba(74, 127, 255, 0.2);
  border-radius: 12px;
}

.example-output p {
  margin-bottom: 16px;
}

.source-badge {
  display: inline-block;
  padding: 4px 12px;
  margin: 4px 4px 4px 0;
  background: rgba(74, 127, 255, 0.2);
  border: 1px solid rgba(74, 127, 255, 0.3);
  border-radius: 16px;
  font-size: 0.875rem;
  color: #a0b4ff;
}

/* Comparison Section */
.comparison-section {
  background: rgba(255, 255, 255, 0.02);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.comparison-column {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
}

.comparison-column h3 {
  text-align: center;
  margin-bottom: 24px;
}

.comparison-column ul {
  list-style: none;
  padding: 0;
}

.comparison-column li {
  padding: 12px 0;
  color: #d0d0d0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-column li:last-child {
  border-bottom: none;
}

/* Benefits Section */
.benefits-section {
  background: rgba(255, 255, 255, 0.02);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.benefit-tile {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.benefit-tile:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(74, 127, 255, 0.3);
  transform: translateY(-4px);
}

.benefit-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.benefit-tile h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.benefit-tile p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Shines Section */
.shines-section {
  background: rgba(255, 255, 255, 0.02);
}

.shines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.shines-column {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
}

.shines-column h3 {
  text-align: center;
  margin-bottom: 24px;
}

.shines-column ul {
  list-style: none;
  padding: 0;
}

.shines-column li {
  padding: 12px 0;
  color: #d0d0d0;
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
  background: rgba(255, 255, 255, 0.02);
}

.faq-list {
  max-width: 860px;
  margin: 48px auto 32px;
}

.faq-item {
  margin-bottom: 24px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
}

.faq-question {
  font-size: 1.125rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 12px;
}

.faq-answer {
  color: #c0c0c0;
  line-height: 1.6;
}

/* Closing CTA */
.closing-cta {
  padding: 100px 0;
  text-align: center;
  background: linear-gradient(180deg, rgba(74, 127, 255, 0.05) 0%, rgba(74, 127, 255, 0.1) 100%);
}

.closing-cta h2 {
  margin-bottom: 16px;
}

.closing-cta .subhead {
  margin-bottom: 32px;
}

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

footer p {
  color: #6a6a7a;
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .hero {
    padding: 80px 0 60px;
  }

  section {
    padding: 60px 0;
  }

  .hamburger {
    display: flex;
  }

  .header-content > div .cta-button {
    display: none;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .process-step {
    padding-left: 60px;
  }

  .process-step::before {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .example-box {
    padding: 24px;
  }

  .comparison-grid,
  .shines-grid {
    grid-template-columns: 1fr;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .closing-cta {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .process-step {
    padding-left: 50px;
  }

  .process-step::before {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}