/* ============================================
   Jarvis AI Labs — Apple-Inspired Design System
   ============================================ */

/* Import Inter from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- CSS Variables ---- */
:root {
  --color-bg: #000000;
  --color-bg-elevated: #0a0a0a;
  --color-bg-card: #111111;
  --color-bg-card-hover: #1a1a1a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-text-tertiary: #6e6e73;
  --color-accent: #2997ff;
  --color-accent-hover: #0077ed;
  --color-accent-subtle: rgba(41, 151, 255, 0.12);
  --color-gradient-start: #2997ff;
  --color-gradient-end: #a855f7;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-base: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5);
  --max-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

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

/* ---- Utility ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-white-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #a1a1a6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Typography (Apple-like scale) ---- */
.headline-hero {
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.headline-section {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.headline-card {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.subhead {
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 400;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.body-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 980px;
  /* Apple pill shape */
  padding: 14px 32px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn svg,
.btn i {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover svg,
.btn:hover i {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid rgba(41, 151, 255, 0.4);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.btn-white {
  background: #fff;
  color: #000;
}

.btn-white:hover {
  background: #e8e8ed;
  color: #000;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-primary);
  padding: 10px 0;
}

.btn-ghost:hover {
  color: var(--color-accent);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---- Header / Navigation ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

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

.logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-primary);
}

/* Mobile nav toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  padding: 8px;
}

/* ---- Hero Section ---- */
.hero {
  padding: 120px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(41, 151, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero .subhead {
  max-width: 640px;
  margin: 20px auto 40px;
}

/* ---- Section Spacing ---- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-header .subhead {
  margin-top: 16px;
}

/* ---- Card Grid ---- */
.card-grid {
  display: grid;
  gap: 20px;
}

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

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

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.card-icon svg,
.card-icon i {
  width: 24px;
  height: 24px;
}

.card .headline-card {
  margin-bottom: 10px;
}

.card .body-text {
  font-size: 0.92rem;
}

/* ---- App Showcase Cards (large) ---- */
.app-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.app-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.app-card-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-bottom: 1px solid var(--color-border);
}

.app-card-body {
  padding: 28px 32px 32px;
}

.app-card .eyebrow {
  margin-bottom: 8px;
}

.app-card .headline-card {
  margin-bottom: 12px;
}

.app-card .body-text {
  margin-bottom: 20px;
}

/* ---- Feature Showcase (alternating layout) ---- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
}

.feature-row:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.feature-row.reverse .feature-visual {
  order: -1;
}

.feature-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-visual .icon-placeholder {
  width: 80px;
  height: 80px;
  color: var(--color-text-tertiary);
}

.feature-content .eyebrow {
  margin-bottom: 12px;
}

.feature-content .headline-section {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 16px;
}

.feature-content .body-text {
  margin-bottom: 24px;
}

.feature-content ul {
  list-style: none;
  margin-bottom: 24px;
}

.feature-content ul li {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-content ul li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---- Stats Bar ---- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
  padding: 60px 0;
}

.stat-item {}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

/* ---- Testimonials ---- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

/* ---- CTA Banner ---- */
.cta-banner {
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner .headline-section {
  margin-bottom: 16px;
}

.cta-banner .subhead {
  max-width: 560px;
  margin: 0 auto 36px;
}

/* ---- Footer ---- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  background: var(--color-bg-elevated);
  font-size: 0.82rem;
  color: var(--color-text-tertiary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 10px;
  color: var(--color-text-tertiary);
  font-size: 0.82rem;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  color: var(--color-text-secondary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  color: var(--color-text-tertiary);
  font-size: 0.82rem;
}

.footer-col ul a:hover {
  color: var(--color-text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: var(--color-text-tertiary);
}

.footer-social a:hover {
  color: var(--color-text-primary);
}

.footer-social a svg,
.footer-social a i {
  width: 18px;
  height: 18px;
}

/* ---- Contact Page Specifics ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
}

.contact-info-item:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg,
.contact-info-icon i {
  width: 20px;
  height: 20px;
}

.contact-info-label {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

.contact-form-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-primary);
  font-size: 0.92rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-accent);
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

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

/* ---- Divider ---- */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* ---- Scroll Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {

  .card-grid.cols-2,
  .card-grid.cols-3 {
    grid-template-columns: 1fr;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-row.reverse .feature-visual {
    order: 0;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .section {
    padding: 60px 0;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .nav-links {
    display: none;
  }

  .mobile-nav-toggle {
    display: block;
  }
}

@media (max-width: 480px) {
  .stats-bar {
    grid-template-columns: 1fr;
  }

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