/* ==========================================================================
   PDF Prime Boost — Landing Page Styles
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #FF5000;
  --color-primary-dark: #E04500;
  --color-primary-light: #FF7033;
  --color-primary-bg: #FFF4F0;
  
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAFAFA;
  --color-bg-dark: #0A0A0A;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;
  
  --color-text: #1A1A1A;
  --color-text-secondary: #525252;
  --color-text-muted: #888888;
  --color-text-inverse: #FFFFFF;
  
  --color-border: #E5E5E5;
  --color-border-light: #F0F0F0;
  
  --color-success: #16A34A;
  --color-warning: #F59E0B;
  --color-error: #DC2626;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.1);
  
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  --container-max: 1200px;
  --container-padding: 24px;
  
  --header-height: 72px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0A0A0A;
    --color-bg-alt: #111111;
    --color-surface: #171717;
    --color-surface-elevated: #1F1F1F;
    
    --color-text: #FAFAFA;
    --color-text-secondary: #A3A3A3;
    --color-text-muted: #737373;
    
    --color-border: #2A2A2A;
    --color-border-light: #333333;
    
    --color-primary-bg: #2D1B14;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.6);
  }
}

/* --- 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-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video, canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: clamp(1.125rem, 2vw, 1.25rem); }

.highlight {
  color: var(--color-primary);
}

p {
  color: var(--color-text-secondary);
  max-width: 65ch;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  margin: 0 auto;
  font-size: 1.125rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 14px 28px;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg-alt);
  border-color: var(--color-text-muted);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-large {
  padding: 18px 36px;
  font-size: 1.125rem;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

/* --- Header / Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  .header {
    background: rgba(10, 10, 10, 0.8);
  }
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo-text {
  display: none;
}

@media (min-width: 640px) {
  .logo-text {
    display: block;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* --- Hero Section --- */
.hero {
  padding: calc(var(--spacing-4xl) + var(--header-height)) 0 var(--spacing-4xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  background: radial-gradient(ellipse at center, var(--color-primary-bg) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

@media (prefers-color-scheme: dark) {
  .hero::before {
    background: radial-gradient(ellipse at center, var(--color-primary-bg) 0%, transparent 70%);
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

@media (min-width: 960px) {
  .hero-content {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

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

@media (min-width: 960px) {
  .hero-text {
    text-align: left;
  }
}

.hero-text h1 {
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  max-width: 55ch;
}

@media (min-width: 960px) {
  .hero-subtitle {
    margin-left: 0;
  }
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 960px) {
  .hero-cta {
    justify-content: flex-start;
  }
}

.hero-note {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Phone Mockup */
.hero-visual {
  display: none;
}

@media (min-width: 960px) {
  .hero-visual {
    display: block;
  }
}

.phone-mockup {
  perspective: 1000px;
}

.phone-frame {
  width: 300px;
  max-width: 100%;
  margin: 0 auto;
  border-radius: 44px;
  background: linear-gradient(145deg, #1a1a1a 0%, #0a0a0a 100%);
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  padding: 10px;
  transform: rotateY(-8deg) rotateX(5deg);
  transition: transform var(--transition-slow);
}

.phone-frame:hover {
  transform: rotateY(-4deg) rotateX(3deg) scale(1.02);
}

.phone-screen {
  border-radius: 34px;
  background: #0A0A0A;
  overflow: hidden;
  aspect-ratio: 300 / 600;
}

.app-preview {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #0A0A0A;
}

.preview-header {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 8px;
}

.preview-dots {
  display: flex;
  gap: 4px;
}

.preview-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.preview-dots span:first-child {
  background: var(--color-primary);
}

.preview-content {
  flex: 1;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  flex: 1;
}

.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.tool-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

.tool-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.tool-card span:last-child {
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
}

/* --- Features Section --- */
.features {
  padding: var(--spacing-4xl) 0;
  background: var(--color-bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

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

.feature-icon {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
  color: var(--color-text-secondary);
}

/* --- Privacy/Trust Section --- */
.privacy-section {
  padding: var(--spacing-4xl) 0;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.privacy-item {
  text-align: center;
  padding: var(--spacing-xl);
}

.privacy-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-primary);
  flex-shrink: 0;
}

.privacy-item h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
}

.privacy-item p {
  font-size: 0.9375rem;
  margin: 0;
  color: var(--color-text-secondary);
}

/* --- CTA Section --- */
.cta-section {
  padding: var(--spacing-4xl) 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  text-align: center;
}

.cta-section h2 {
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0 auto var(--spacing-xl);
  max-width: 50ch;
}

.cta-section .btn-primary {
  background: var(--color-text-inverse);
  color: var(--color-primary);
}

.cta-section .btn-primary:hover:not(:disabled) {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
}

.cta-section .btn-secondary {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.3);
}

.cta-section .btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-text-inverse);
}

/* --- Highlight Box --- */
.highlight-box {
  background: var(--color-primary-bg);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.highlight-box h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary-dark);
}

@media (prefers-color-scheme: dark) {
  .highlight-box h3 {
    color: var(--color-primary-light);
  }
}

.highlight-box ul {
  margin: 0;
  padding-left: var(--spacing-xl);
}

.highlight-box li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  position: relative;
}

.highlight-box li::marker {
  color: var(--color-primary);
}

/* --- Permissions Table --- */
.permissions-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: 0.9375rem;
}

.permissions-table th,
.permissions-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.permissions-table th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.permissions-table tr:last-child td {
  border-bottom: none;
}

.permissions-table td:last-child {
  color: var(--color-success);
  font-weight: 500;
}

/* --- Legal Pages --- */
.legal-main {
  padding: calc(var(--spacing-3xl) + var(--header-height)) 0 var(--spacing-4xl);
  min-height: 100vh;
}

.legal-container {
  max-width: 800px;
}

.legal-header {
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.legal-header h1 {
  margin-bottom: var(--spacing-lg);
}

.legal-meta {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.legal-app,
.legal-developer,
.legal-contact {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.legal-content {
  line-height: 1.8;
}

.legal-content section {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-light);
}

.legal-content section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.legal-content h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.legal-content h3 {
  font-size: 1.125rem;
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  color: var(--color-primary);
}

.legal-content p {
  margin-bottom: var(--spacing-md);
}

.legal-content ul,
.legal-content ol {
  margin: var(--spacing-md) 0 var(--spacing-md) var(--spacing-xl);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
  padding-left: var(--spacing-sm);
}

.legal-content strong {
  color: var(--color-text);
}

.legal-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  color: var(--color-primary-dark);
}

.legal-content address {
  margin-top: var(--spacing-md);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer-main {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

.footer-brand {
  max-width: 280px;
}

.footer-tagline {
  margin-top: var(--spacing-md);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

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

@media (min-width: 768px) {
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-column h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-column a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.footer-disclaimer {
  font-size: 0.8125rem !important;
}

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

.btn:focus-visible,
.nav-link:focus-visible,
.footer-column a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

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

/* --- Print Styles --- */
@media print {
  .header,
  .hero-cta,
  .cta-section,
  .footer {
    display: none;
  }
  
  .hero {
    padding: 0;
  }
  
  .legal-main {
    padding: 0;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  .legal-content section {
    page-break-inside: avoid;
  }
}