/* QuantTorch — Main Stylesheet */

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

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

/* Base */
body {
  font-family: var(--font-sans);
  font-weight: var(--weight-regular);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  z-index: var(--z-toast);
  text-decoration: none;
}
.skip-link:focus {
  top: var(--space-4);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-heading);
  line-height: var(--lh-heading);
  font-weight: var(--weight-bold);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); font-weight: var(--weight-semibold); }
h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); }

p {
  max-width: 70ch;
}

a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #33ddff;
}
a:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--section-padding);
}

.section__header {
  margin-bottom: var(--space-12);
  text-align: center;
}

.section__title {
  margin-bottom: var(--space-4);
}

.section__subtitle {
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  max-width: 60ch;
  margin-inline: auto;
}

/* Section divider */
.section-divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 212, 255, 0.3) 50%,
    transparent 100%
  );
  border: none;
  margin: 0;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

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

.nav__links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.nav__links a {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  transition: color var(--transition-fast);
}
.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text-heading);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  background: var(--color-accent-orange);
  color: #fff;
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.nav__cta:hover {
  background: #e55a2b;
  box-shadow: var(--glow-orange);
  color: #fff;
}
.nav__cta:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

/* Hamburger (mobile) */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}
.nav__hamburger:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: var(--z-base);
  max-width: 800px;
  padding-inline: var(--container-padding);
}

.hero__logo {
  width: 200px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.hero__title {
  margin-bottom: var(--space-6);
}

.hero__title .accent-cyan {
  color: var(--color-accent-cyan);
}

.hero__subtitle {
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: var(--space-10);
  max-width: 60ch;
  margin-inline: auto;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: var(--color-accent-orange);
  color: #fff;
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.hero__cta:hover {
  background: #e55a2b;
  box-shadow: var(--glow-orange);
  transform: translateY(-1px);
  color: #fff;
}
.hero__cta:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  animation: gentle-bounce 2s ease-in-out infinite;
}
.hero__scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-secondary);
  border-bottom: 2px solid var(--color-text-secondary);
  transform: rotate(45deg);
}

@keyframes gentle-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Cards */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--glow-cyan);
}

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cyan-dim);
  border-radius: var(--radius-md);
  color: var(--color-accent-cyan);
}

.card__title {
  font-size: var(--text-h3);
  margin-bottom: var(--space-3);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

/* Grid layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--card-gap);
}

/* Metric display */
.metric {
  font-family: var(--font-mono);
  font-weight: var(--weight-medium);
  color: var(--color-accent-cyan);
}

/* Process / Funnel */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 700px;
  margin-inline: auto;
  position: relative;
}

.process-step {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  position: relative;
  padding-bottom: var(--space-6);
}

.process-step:last-child {
  padding-bottom: 0;
}

/* Connecting line between steps */
.process-step::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.3) 0%, rgba(0, 212, 255, 0.05) 100%);
}

.process-step:last-child::before {
  display: none;
}

.process-step__number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cyan-dim);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-full);
  color: var(--color-accent-cyan);
  font-family: var(--font-mono);
  font-weight: var(--weight-medium);
  font-size: var(--text-small);
  position: relative;
  z-index: 1;
}

.process-step__content h3 {
  font-size: var(--text-body);
  margin-bottom: var(--space-1);
}

.process-step__content p {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

/* Funnel stat */
.funnel-stats {
  margin-bottom: var(--space-4);
}

.funnel-stat {
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.funnel-stat__number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--weight-bold);
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-2);
}

.funnel-stat__label {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

/* Trust badges */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}

.trust-item {
  text-align: center;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
}

.trust-item:hover {
  background: rgba(17, 24, 39, 0.5);
}

.trust-item__icon {
  width: 48px;
  height: 48px;
  margin-inline: auto;
  margin-bottom: var(--space-4);
  color: var(--color-accent-cyan);
}

.trust-item__title {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
}

.trust-item__text {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

/* FAQ Accordion */
.faq-list {
  max-width: 750px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  background: var(--color-card-bg);
  border: none;
  color: var(--color-text-heading);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-medium);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.faq-item__question:hover {
  background: rgba(17, 24, 39, 0.8);
}
.faq-item__question:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: -2px;
}

.faq-item__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}
.faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding: 0 var(--space-6) var(--space-5);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: var(--lh-body);
}

/* Hero qualifier */
.hero__qualifier {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

/* Card pipeline reference */
.card__pipeline {
  color: var(--color-accent-cyan);
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  margin-top: var(--space-3);
}

/* Card timeline */
.card__timeline {
  color: var(--color-accent-cyan);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

/* Callout */
.callout {
  max-width: 700px;
  margin: var(--space-8) auto var(--space-12);
  padding: var(--space-5) var(--space-6);
  background: var(--color-cyan-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
}

.callout p {
  color: var(--color-text-primary);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  text-align: center;
}

/* Proof section */
.proof-narrative {
  max-width: 70ch;
  margin: 0 auto var(--space-12);
  padding: var(--space-8);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.proof-narrative p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--lh-body);
}

.proof-narrative p:last-child {
  margin-bottom: 0;
  color: var(--color-text-primary);
}

.proof-metric {
  text-align: center;
  padding: var(--space-6);
}

.proof-metric .metric {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: var(--space-2);
}

.metric-label {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

.proof-conclusion {
  text-align: center;
  max-width: 60ch;
  margin: var(--space-8) auto 0;
}

.proof-conclusion p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  margin-inline: auto;
}

.proof-conclusion .hero__cta {
  display: inline-flex;
}

/* Not-for filter */
.not-for {
  max-width: 60ch;
  margin: var(--space-8) auto 0;
  text-align: center;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}

.not-for p {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  margin-inline: auto;
}

/* Disclaimer / Risk disclosure */
.risk-section {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.risk-section p {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

.disclaimer-content {
  max-width: 70ch;
  margin-inline: auto;
}

.disclaimer-content p {
  margin-bottom: var(--space-4);
}

.disclaimer-content p:last-child {
  margin-bottom: 0;
}

.disclaimer-framing {
  color: var(--color-text-primary) !important;
  font-weight: var(--weight-medium);
  font-style: italic;
  margin-bottom: var(--space-6) !important;
}

/* Contact form */
.contact-form {
  max-width: 560px;
  margin-inline: auto;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.form-group select,
.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  transition: border-color var(--transition-fast);
}
.form-group select:focus-visible,
.form-group input:focus-visible,
.form-group textarea:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: -1px;
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 3px var(--color-cyan-dim);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-note {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  margin-top: var(--space-3);
  text-align: center;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: var(--color-accent-orange);
  color: #fff;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
  justify-content: center;
}
.form-submit:hover {
  background: #e55a2b;
  box-shadow: var(--glow-orange);
}
.form-submit:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}
.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-small);
  display: none;
}
.form-status--success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}
.form-status--error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}

/* Footer */
.footer {
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
  list-style: none;
}

.footer__links a {
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}
.footer__links a:hover {
  color: var(--color-text-heading);
}

.footer__copy {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
}

/* Scroll animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Form required legend */
.form-required-legend {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  margin-bottom: var(--space-5);
}

/* Print styles */
@media print {
  .nav,
  .hero__scroll,
  .nav__hamburger,
  .form-submit,
  .hero__cta,
  .nav__cta {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .hero {
    min-height: auto;
    padding-top: 0;
  }

  .section {
    padding-block: 24pt;
    break-inside: avoid;
  }

  .card,
  .trust-item,
  .proof-narrative {
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .section-divider {
    background: #ccc;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero__scroll {
    animation: none;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}