/* =============================================
   SpeechCue Marketing Website
   Premium Dark Theme — Refined
   ============================================= */

/* Self-hosted Inter (variable, latin subset) — replaces Google Fonts */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/assets/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* CSS Variables */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0b;
  --color-bg-secondary: #0f0f11;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-bg-card-hover: rgba(255, 255, 255, 0.05);

  --color-text-primary: #fafafa;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-tertiary: rgba(255, 255, 255, 0.5);

  --color-accent: #7c3aed;
  --color-accent-hover: #8b5cf6;
  --color-accent-glow: rgba(124, 58, 237, 0.25);

  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  /* Gradients */
  --gradient-accent: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
  --gradient-glow: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', '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: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Layout */
  --container-max: 1152px;
  --container-narrow: 720px;
  --border-radius: 16px;
  --border-radius-sm: 8px;
  --border-radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

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

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

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);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* =============================================
   Navigation
   ============================================= */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: var(--color-accent);
  border-bottom: none;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: white;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.9;
}

.nav-logo img {
  border-radius: var(--border-radius-sm);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-trial-badge {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.btn-nav {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
}

.btn-nav:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* =============================================
   Buttons
   ============================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 16px var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-accent-glow);
}

.btn-large {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius);
}

/* =============================================
   Section Styles
   ============================================= */

.section {
  padding: var(--space-16) 0 var(--space-20);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--space-12);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

/* =============================================
   Hero Section
   ============================================= */

.hero {
  padding: calc(var(--space-20) + 64px) 0 var(--space-16);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-content {
  max-width: 720px;
  margin-bottom: var(--space-12);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.hero-badge svg {
  color: var(--color-accent);
}

.hero-title {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

.hero-microcopy {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.hero-visual {
  width: 100%;
  max-width: 960px;
  position: relative;
}

.hero-screenshot {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--color-border),
    0 24px 48px -12px rgba(0, 0, 0, 0.5),
    0 0 80px -20px var(--color-accent-glow);
}

.hero-screenshot img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: -1;
}

/* =============================================
   Why SpeechCue Section
   ============================================= */

.why {
  background: var(--color-bg-secondary);
}

.why-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 480px;
  margin: 0 auto;
}

.why-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.why-list svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

/* =============================================
   Unified Card Component
   ============================================= */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(124, 58, 237, 0.1);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* =============================================
   Features Grid
   ============================================= */

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

/* =============================================
   Works With + Use Cases
   ============================================= */

.use-cases {
  background: var(--color-bg-secondary);
}

.works-with {
  text-align: center;
  margin-bottom: var(--space-8);
}

.works-with-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
}

.works-with-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.badge {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.use-case-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: all var(--transition-base);
}

.use-case-card:hover {
  border-color: var(--color-border-hover);
}

.use-case-image {
  aspect-ratio: 16/10;
  background: var(--color-bg-primary);
  overflow: hidden;
}

.use-case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.use-case-content {
  padding: var(--space-5);
}

.use-case-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.use-case-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* =============================================
   How It Works (Steps)
   ============================================= */

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

.step-card {
  text-align: center;
  position: relative;
  padding-top: var(--space-8);
}

.step-number {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 50%;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: white;
}

.step-card .card-icon {
  margin: 0 auto var(--space-4);
}

.step-card .card-title {
  text-align: center;
}

.step-card .card-desc {
  text-align: center;
}

/* =============================================
   Pricing Section
   ============================================= */

.pricing {
  background: var(--color-bg-primary);
}

.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--space-10);
  max-width: 400px;
  margin: 0 auto;
  text-align: center;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-8);
}

.pricing-currency {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text-primary);
}

.pricing-amount {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1;
}

.pricing-period {
  font-size: var(--font-size-base);
  color: var(--color-text-tertiary);
  margin-left: var(--space-2);
}

.pricing-features {
  list-style: none;
  margin: 0 0 var(--space-8);
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

.pricing-cta {
  width: 100%;
  justify-content: center;
}

.pricing-note {
  margin-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* =============================================
   FAQ Section
   ============================================= */

.faq {
  background: var(--color-bg-secondary);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-6);
}

.faq-question {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.faq-answer {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* =============================================
   Trust Section (Built for Professionals)
   ============================================= */

.trust {
  background: var(--color-bg-primary);
}

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

.trust-card {
  text-align: center;
}

.trust-card .card-icon {
  margin: 0 auto var(--space-4);
}

.trust-card .card-title {
  text-align: center;
}

.trust-card .card-desc {
  text-align: center;
}

/* =============================================
   Final CTA Section
   ============================================= */

.cta-final {
  background: var(--color-bg-secondary);
  text-align: center;
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.cta-final::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 600px;
  height: 200px;
  background: var(--gradient-glow);
  opacity: 0.4;
  pointer-events: none;
}

.cta-title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
  position: relative;
}

.cta-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-6);
  position: relative;
}

.cta-final .btn {
  position: relative;
}

/* =============================================
   Footer
   ============================================= */

.footer {
  padding: var(--space-8) 0;
  border-top: none;
  background: var(--color-accent);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: white;
}

.footer-brand img {
  border-radius: var(--border-radius-sm);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-meta {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

/* =============================================
   Responsive Design
   ============================================= */

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --space-16: 3rem;
    --space-20: 4rem;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--space-16) + 64px);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .section-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-8);
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 320px;
    margin: 0 auto;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .pricing-card {
    padding: var(--space-6);
  }

  .pricing-amount {
    font-size: var(--font-size-4xl);
  }

  .cta-title {
    font-size: var(--font-size-2xl);
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }

  .footer-links {
    justify-content: center;
    gap: var(--space-4);
  }

  .footer-meta {
    color: rgba(255, 255, 255, 0.6);
  }

  /* Hero visual edge-to-edge on mobile */
  .hero-visual {
    margin-left: calc(-1 * var(--space-6));
    margin-right: calc(-1 * var(--space-6));
    width: calc(100% + var(--space-6) * 2);
  }

  .hero-screenshot {
    border-radius: 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .nav-container {
    padding: 0 var(--space-4);
  }

  .nav-trial-badge {
    display: none;
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-badge {
    font-size: var(--font-size-xs);
  }

  .card {
    padding: var(--space-5);
  }

  .btn-large {
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-sm);
  }

  /* Ensure touch targets */
  .btn {
    min-height: 44px;
  }

  .hero-visual {
    margin-left: calc(-1 * var(--space-4));
    margin-right: calc(-1 * var(--space-4));
    width: calc(100% + var(--space-4) * 2);
  }
}

/* =============================================
   Safe Area Insets
   ============================================= */

@supports (padding: env(safe-area-inset-top)) {
  .nav {
    padding-top: max(var(--space-4), env(safe-area-inset-top));
  }

  .footer {
    padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
  }
}

/* =============================================
   Touch Device Optimizations
   ============================================= */

@media (hover: none) and (pointer: coarse) {
  .btn:active {
    transform: scale(0.98);
  }

  .btn-primary:active {
    box-shadow: 0 2px 8px var(--color-accent-glow);
  }

  .card:hover,
  .use-case-card:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border);
  }

  .btn-primary:hover {
    transform: none;
  }
}

/* =============================================
   Accessibility
   ============================================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: white;
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
  font-size: var(--font-size-sm);
  border-radius: 0 0 var(--border-radius-sm) 0;
}

.skip-link:focus {
  top: 0;
}