/* ================================================================
   DocuWise Landing Page — Complete Stylesheet
   Palette: Deep Black + DocuWise Blue
   ================================================================ */

/* ===== CSS Custom Properties ===== */
:root {
  /* Surface */
  --color-bg-primary:     #0D0D0D;
  --color-bg-secondary:   #141414;
  --color-bg-tertiary:    #1A1A1A;
  --color-bg-hover:       #222222;

  /* Border */
  --color-border-subtle:  rgba(255,255,255,0.06);
  --color-border-default: rgba(255,255,255,0.10);
  --color-border-hover:   rgba(255,255,255,0.18);
  --color-border-accent:  rgba(43,87,154,0.25);

  /* Accent — DocuWise Blue */
  --color-accent-primary:     #2B579A;
  --color-accent-secondary:   #1E3F73;
  --color-accent-tertiary:    #4A82CC;
  --color-accent-glow:        rgba(43,87,154,0.16);
  --color-accent-strong:      rgba(43,87,154,0.30);

  /* Text */
  --color-text-primary:    #F0F0F0;
  --color-text-secondary:  #A0A0A0;
  --color-text-tertiary:   #666666;

  /* Semantic */
  --color-success: #22C55E;
  --color-error:   #EF4444;

  /* Typography */
  --font-sans:    'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', 'Noto Sans SC', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* Radii */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-card:    0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-elevated: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow:    0 0 60px var(--color-accent-glow);
  --shadow-btn:     0 0 30px var(--color-accent-glow), 0 0 60px rgba(43,87,154,0.1);

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:  150ms;
  --duration-normal: 300ms;
  --duration-slow:   600ms;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
}

/* ===== Reset ===== */
*, *::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: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* Selection */
::selection {
  background: var(--color-accent-primary);
  color: #000;
}

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

/* ===== Typography ===== */
.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
  line-height: 1.7;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-accent-primary);
  color: #0D0D0D;
}
.btn-primary:hover {
  background: var(--color-accent-tertiary);
  transform: scale(1.03);
  box-shadow: var(--shadow-btn);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-default);
}
.btn-ghost:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-hover);
  background: rgba(255,255,255,0.03);
}

.btn-sm { padding: 8px 20px; font-size: 0.875rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-xl { padding: 18px 40px; font-size: 1.125rem; border-radius: var(--radius-lg); }

.btn-arrow {
  transition: transform var(--duration-normal) var(--ease-out-expo);
}
.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ===== Navigation ===== */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  transition: background var(--duration-normal) ease, backdrop-filter var(--duration-normal) ease, box-shadow var(--duration-normal) ease;
}
#nav.scrolled {
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border-subtle);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo-icon {
  flex-shrink: 0;
}
.logo-text { color: var(--color-text-primary); }
.logo-accent { color: var(--color-accent-primary); }

.nav-links {
  display: flex;
  gap: var(--space-xl);
}
.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color var(--duration-normal);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent-primary);
  transition: all var(--duration-normal) var(--ease-out-expo);
  transform: translateX(-50%);
}
.nav-links a:hover { color: var(--color-text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-cta { flex-shrink: 0; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + var(--space-2xl)) var(--space-lg) var(--space-4xl);
  overflow: hidden;
}

#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-lg);
}
.hero-line {
  display: block;
  color: var(--color-text-primary);
}
.hero-line-accent {
  color: var(--color-accent-primary);
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subheadline {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--color-accent-tertiary);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.hero-body {
  font-size: clamp(0.9375rem, 1.5vw, 1.125rem);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-3xl);
}

/* Hero mockup */
.hero-mockup {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  animation: float 6s ease-in-out infinite;
}

.mockup-frame {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated), 0 0 120px rgba(43,87,154,0.06);
}

.mockup-dots {
  display: flex;
  gap: 8px;
  padding: 14px 20px;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border-subtle);
}
.mockup-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border-hover);
}
.mockup-dots span:nth-child(1) { background: #EF4444; }
.mockup-dots span:nth-child(2) { background: #F59E0B; }
.mockup-dots span:nth-child(3) { background: var(--color-accent-primary); }

.mockup-content {
  display: flex;
  height: 360px;
}

.mockup-sidebar {
  width: 48px;
  background: var(--color-bg-tertiary);
  border-right: 1px solid var(--color-border-subtle);
}

.mockup-editor {
  flex: 1;
  padding: var(--space-xl);
  position: relative;
  background: #111;
}
.mockup-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  transition: color 2s ease;
}
.mockup-text-1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}
.mockup-text-2 {
  color: var(--color-accent-tertiary);
}
.mockup-highlight {
  position: absolute;
  left: var(--space-xl);
  right: var(--space-xl);
  top: 72px;
  height: 24px;
  background: var(--color-accent-glow);
  border-radius: 3px;
  animation: highlightPulse 3s ease-in-out infinite;
}

.mockup-chat {
  width: 280px;
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border-subtle);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  justify-content: flex-end;
}
.mockup-msg {
  font-size: 0.8125rem;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  line-height: 1.5;
}
.mockup-msg-user {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  align-self: flex-end;
}
.mockup-msg-ai {
  background: rgba(43,87,154,0.08);
  color: var(--color-accent-tertiary);
  border: 1px solid var(--color-border-accent);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes highlightPulse {
  0%, 100% { opacity: 0.3; transform: scaleX(1); }
  50% { opacity: 0.6; transform: scaleX(1.02); }
}

/* ===== Why DocuWise ===== */
.why {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-secondary);
}

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

.why-card {
  text-align: center;
  padding: var(--space-xl);
  transition: all var(--duration-slow) var(--ease-out-expo);
}
.why-card:hover {
  transform: translateY(-4px);
}

.why-icon {
  margin-bottom: var(--space-lg);
}

.why-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.why-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===== Features ===== */
.features {
  padding: var(--space-5xl) 0;
  position: relative;
}

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

.feature-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--duration-slow) var(--ease-out-expo);
  position: relative;
}
.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-accent);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 80px rgba(43,87,154,0.06);
}

.feature-icon {
  margin-bottom: var(--space-lg);
}

.feature-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.feature-tags li {
  font-size: 0.75rem;
  color: var(--color-accent-tertiary);
  background: rgba(43,87,154,0.07);
  border: 1px solid rgba(43,87,154,0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* ===== How It Works ===== */
.how {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-secondary);
}

.steps-pipeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 160px;
  flex-shrink: 0;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--color-accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  transition: all var(--duration-slow) var(--ease-out-expo);
  position: relative;
}
.step-number span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-accent-primary);
}
.step-item.visible .step-number {
  background: rgba(43,87,154,0.10);
  box-shadow: 0 0 24px var(--color-accent-glow);
  border-color: var(--color-accent-tertiary);
}

.step-icon {
  margin-bottom: var(--space-md);
  min-height: 48px;
  display: flex;
  align-items: center;
}

.step-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.step-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 22px;
  flex-shrink: 0;
  margin: 0 -4px;
}
.step-connector svg {
  width: 60px;
  height: 4px;
}
.dash-line {
  stroke-dasharray: 4 4;
  stroke-dashoffset: 400;
  transition: stroke-dashoffset 2s ease;
}
.step-connector.visible .dash-line {
  stroke-dashoffset: 0;
}

/* ===== Pricing ===== */
.pricing {
  padding: var(--space-5xl) 0;
}

.pricing-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.pricing-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 50% 0%, var(--color-accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-slow) ease;
  pointer-events: none;
}
.pricing-card.visible::before {
  opacity: 1;
}

.pricing-badge {
  display: inline-flex;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  background: rgba(43,87,154,0.08);
  border: 1px solid rgba(43,87,154,0.18);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.pricing-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.pricing-model {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.pricing-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.pricing-footnote {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  text-align: center;
  line-height: 1.8;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
}

/* ===== Download ===== */
.download {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-secondary);
}

.download-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
  padding: var(--space-2xl);
}

.download-glow {
  position: absolute;
  inset: -20px;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at 50% 50%, var(--color-accent-glow), transparent 70%);
  animation: breathe 3s ease-in-out infinite;
  pointer-events: none;
}

@keyframes breathe {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

.download-btn {
  position: relative;
  z-index: 1;
  animation: btnPulse 3s ease-in-out infinite;
}
@keyframes btnPulse {
  0%, 100% { box-shadow: 0 0 20px var(--color-accent-glow); }
  50% { box-shadow: 0 0 50px var(--color-accent-strong), 0 0 80px var(--color-accent-glow); }
}
.download-btn:hover {
  animation: none;
}

.download-meta {
  position: relative;
  z-index: 1;
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.meta-divider { color: var(--color-border-hover); }

/* Requirements */
.requirements {
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
}
.requirements-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}
.requirements-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.req-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  justify-content: center;
}
.req-icon {
  font-size: 1rem;
  color: var(--color-accent-primary);
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
  padding: var(--space-4xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border-subtle);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-brand {
  margin-bottom: var(--space-2xl);
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-logo-icon {
  flex-shrink: 0;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}
.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  max-width: 400px;
  margin-bottom: var(--space-2xl);
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.footer-col a {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  transition: color var(--duration-normal);
}
.footer-col a:hover {
  color: var(--color-accent-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

.footer-icp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  padding-top: var(--space-sm);
}

.footer-icp img {
  vertical-align: middle;
}

.footer-icp a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-icp a:hover {
  color: var(--color-text-secondary);
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Why card stagger */
.why-card:nth-child(1) { transition-delay: 0s; }
.why-card:nth-child(2) { transition-delay: 0.12s; }
.why-card:nth-child(3) { transition-delay: 0.24s; }

/* Staggered card reveals */
.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.12s; }
.feature-card:nth-child(3) { transition-delay: 0.24s; }

/* Step stagger */
.step-item:nth-child(1) { transition-delay: 0s; }
.step-item:nth-child(3) { transition-delay: 0.1s; }
.step-item:nth-child(5) { transition-delay: 0.2s; }
.step-item:nth-child(7) { transition-delay: 0.3s; }
.step-item:nth-child(9) { transition-delay: 0.4s; }

/* App card stagger */
.app-card:nth-child(1) { transition-delay: 0s; }
.app-card:nth-child(2) { transition-delay: 0.12s; }
.app-card:nth-child(3) { transition-delay: 0.24s; }

/* Screenshot stagger */
.screenshot-card:nth-child(1) { transition-delay: 0s; }
.screenshot-card:nth-child(2) { transition-delay: 0.12s; }
.screenshot-card:nth-child(3) { transition-delay: 0.24s; }

/* Onboarding stagger */
.onboard-item:nth-child(1) { transition-delay: 0s; }
.onboard-item:nth-child(2) { transition-delay: 0.12s; }
.onboard-item:nth-child(3) { transition-delay: 0.24s; }

/* Pricing card reveal */
.pricing-card.reveal {
  transform: scale(0.92) translateY(20px);
}
.pricing-card.reveal.visible {
  transform: scale(1) translateY(0);
}

/* ===== Office Apps ===== */
.apps {
  padding: var(--space-5xl) 0;
}

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

.app-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--duration-slow) var(--ease-out-expo);
}
.app-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.app-icon {
  margin-bottom: var(--space-lg);
}

.app-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.app-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.app-tags li {
  font-size: 0.75rem;
  color: var(--color-accent-tertiary);
  background: rgba(43,87,154,0.07);
  border: 1px solid rgba(43,87,154,0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* ===== Screenshots ===== */
.screenshots {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-secondary);
}

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

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

.screenshot-frame {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out-expo);
  margin-bottom: var(--space-md);
}
.screenshot-frame:hover {
  border-color: var(--color-border-accent);
  box-shadow: 0 0 40px var(--color-accent-glow);
}

.screenshot-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.screenshot-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.section-footnote {
  text-align: center;
  margin-top: var(--space-2xl);
  color: var(--color-text-tertiary);
  font-size: 0.9375rem;
  opacity: 0.7;
}

/* ===== Onboarding ===== */
.onboarding {
  padding: var(--space-5xl) 0;
  background: var(--color-bg-secondary);
}

.onboarding-steps {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.onboard-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.onboard-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.onboard-text h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.onboard-text p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Testimonials ===== */
.testimonials {
  padding: var(--space-5xl) 0;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  gap: var(--space-xl);
  width: max-content;
  animation: scrollTestimonials 60s linear infinite;
  padding: var(--space-md) 0;
}
.testimonials-track:hover {
  animation-play-state: paused;
}

.testimonial-card {
  flex-shrink: 0;
  width: 400px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out-expo);
}
.testimonial-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: var(--color-accent-tertiary);
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: var(--space-md);
}

.testimonial-body {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.testimonial-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.testimonial-role {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

@keyframes scrollTestimonials {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

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

/* Tablet (≤1024px) */
@media (max-width: 1024px) {
  .features-grid,
  .apps-grid,
  .screenshots-grid,
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-pipeline {
    flex-wrap: wrap;
    gap: var(--space-xl);
    justify-content: center;
  }
  .step-connector {
    display: none;
  }
  .step-item {
    width: 140px;
  }

  .mockup-content {
    height: 280px;
  }
  .mockup-chat {
    width: 220px;
  }
}

/* Mobile (≤768px) */
@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
  }

  .nav-links { display: none; }

  .hero {
    padding-top: calc(var(--nav-height) + var(--space-xl));
    padding-bottom: var(--space-3xl);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .features-grid,
  .apps-grid,
  .screenshots-grid,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .testimonial-card {
    width: 300px;
  }

  .onboard-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .steps-pipeline {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xl);
  }
  .step-item {
    width: 100%;
    max-width: 280px;
    flex-direction: row;
    text-align: left;
    gap: var(--space-md);
  }
  .step-icon { margin-bottom: 0; min-height: auto; }
  .step-number { margin-bottom: 0; flex-shrink: 0; }

  .mockup-content {
    height: auto;
    flex-direction: column;
  }
  .mockup-sidebar { display: none; }
  .mockup-editor { padding: var(--space-md); }
  .mockup-chat {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--color-border-subtle);
    flex-direction: row;
  }
  .mockup-chat .mockup-msg { flex: 1; }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .section-title {
    font-size: 2rem;
  }
}

/* Small phones (<400px) */
@media (max-width: 400px) {
  .hero-headline {
    font-size: 2.2rem;
  }
  .btn-xl {
    padding: 14px 24px;
    font-size: 1rem;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-mockup { animation: none; }
  .download-glow { animation: none; }
  .download-btn { animation: none; }
  .testimonials-track { animation: none; }
}