/* ============================================
   PDF Scan & Convert Pro — Main Stylesheet
   Design: Dark Slate + Red Accent
   ============================================ */

:root {
  --bg-primary: #111827;
  --bg-secondary: #1a2333;
  --bg-card: #1e2d3d;
  --accent: #EF4444;
  --accent-hover: #F97316;
  --accent-gradient: linear-gradient(135deg, #EF4444, #F97316);
  --text-primary: #F9FAFB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --border: rgba(255,255,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px rgba(0,0,0,0.4);
  --shadow-accent: 0 8px 32px rgba(239,68,68,0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

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

body {
  font-family: var(--font);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* ============ TYPOGRAPHY ============ */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; }
p  { font-size: 1rem; color: var(--text-secondary); line-height: 1.7; }

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============ LAYOUT ============ */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

section { padding: 80px 0; }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(239,68,68,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.appstore-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: #111;
  padding: 12px 24px;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
}

.appstore-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,255,255,0.2);
}

.appstore-btn svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* ============ HEADER / NAV ============ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
}

header.scrolled {
  background: rgba(17, 24, 39, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent-gradient);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 600 !important;
  font-size: 0.88rem !important;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ============ MOBILE MENU ============ */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-primary);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.2s;
}

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

.mobile-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}

/* ============ HERO ============ */
.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(239,68,68,0.12) 0%, transparent 65%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 65%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.25);
  color: #F97316;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title { margin-bottom: 20px; }

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-item { text-align: left; }

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label { font-size: 0.8rem; color: var(--text-muted); }

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-phone-wrap {
  position: relative;
  width: 280px;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(239,68,68,0.2) 0%, transparent 65%);
  pointer-events: none;
}

.hero-icon {
  width: 200px;
  height: 200px;
  margin: 0 auto;
  border-radius: 42px;
  box-shadow: 0 30px 80px rgba(239,68,68,0.35), 0 0 0 1px rgba(255,255,255,0.08);
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-16px); }
}

/* ============ FEATURES ============ */
.features { background: var(--bg-secondary); }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  background: rgba(239,68,68,0.1);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-header h2 { margin-bottom: 12px; }
.section-header p { max-width: 520px; margin: 0 auto; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(239,68,68,0.3);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(239,68,68,0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.92rem; }

/* ============ HOW IT WORKS ============ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  position: relative;
}

.step {
  text-align: center;
  padding: 32px 20px;
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-accent);
}

.step h3 { margin-bottom: 10px; }
.step p { font-size: 0.92rem; }

/* ============ PRICING ============ */
.pricing { background: var(--bg-secondary); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  transition: transform 0.25s ease;
}

.pricing-card:hover { transform: translateY(-4px); }

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-accent);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 16px;
  border-radius: 50px;
  white-space: nowrap;
}

.pricing-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.pricing-price {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 4px;
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 28px;
}

.pricing-features li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ============ BLOG ============ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(239,68,68,0.3);
}

.blog-thumb {
  height: 180px;
  background: linear-gradient(135deg, #1e2d3d 0%, #2a3a4d 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.blog-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0.08;
}

.blog-content { padding: 24px; }

.blog-tag {
  display: inline-block;
  background: rgba(239,68,68,0.1);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-card h3 { margin-bottom: 10px; font-size: 1.05rem; }
.blog-card p { font-size: 0.88rem; margin-bottom: 16px; }

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(249,115,22,0.1);
  color: #F97316;
  border: 1px solid rgba(249,115,22,0.25);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 50px;
}

/* ============ CTA SECTION ============ */
.cta-section {
  background: var(--bg-secondary);
  text-align: center;
}

.cta-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 64px 40px;
  position: relative;
  overflow: hidden;
  max-width: 760px;
  margin: 0 auto;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(239,68,68,0.15) 0%, transparent 65%);
  pointer-events: none;
}

.cta-box h2 { margin-bottom: 16px; }
.cta-box p { margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============ FOOTER ============ */
footer {
  background: #0a1018;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-brand p { font-size: 0.88rem; }

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p { font-size: 0.84rem; color: var(--text-muted); }

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a {
  font-size: 0.84rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

/* ============ INNER PAGES ============ */
.page-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 { margin-bottom: 12px; }
.page-hero p { max-width: 600px; margin: 0 auto; }

.page-content {
  padding: 64px 0;
  max-width: 800px;
  margin: 0 auto;
}

.page-content h2 {
  font-size: 1.4rem;
  margin: 40px 0 14px;
  color: var(--text-primary);
}

.page-content h2:first-child { margin-top: 0; }

.page-content p {
  font-size: 0.96rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.page-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.page-content ul li {
  font-size: 0.96rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.page-content a {
  color: var(--accent);
  text-decoration: underline;
}

/* Support form */
.support-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 40px;
}

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

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: border-color 0.2s;
  outline: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

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

.form-group select option { background: var(--bg-secondary); }

/* ============ BLOG INDEX ============ */
.blog-page { padding: 64px 0; }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-icon { width: 140px; height: 140px; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 380px;
  }
}

@media (max-width: 680px) {
  section { padding: 60px 0; }

  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero { padding-top: 100px; padding-bottom: 60px; }
  .hero-stats { gap: 20px; }
  .stat-value { font-size: 1.3rem; }

  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal { justify-content: center; }

  .cta-box { padding: 40px 24px; }

  .page-content { padding: 40px 0; }
  .support-form { padding: 24px; }
}

@media (max-width: 420px) {
  .steps-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions { flex-direction: column; align-items: center; }
}