/* ============================================================
   PDFPro — Main Stylesheet
   Design: Dark teal + amber — Professional & Modern
   ============================================================ */

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

:root {
  --primary:      #0d9488;
  --primary-dark: #0f766e;
  --primary-light:#5eead4;
  --accent:       #f59e0b;
  --accent-dark:  #d97706;
  --dark:         #0f172a;
  --dark-2:       #1e293b;
  --dark-3:       #334155;
  --muted:        #64748b;
  --light:        #f8fafc;
  --white:        #ffffff;
  --danger:       #ef4444;
  --success:      #22c55e;

  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.12);
  --shadow:    0 4px 20px rgba(0,0,0,.15);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.22);

  --transition: .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--dark);
  color: var(--light);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── Typography ── */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-head);
  line-height: 1.2;
  color: var(--white);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.3rem; font-weight: 600; }
p  { color: #94a3b8; }

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

/* ── Layout ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-weight: 600; font-size: .95rem;
  border: 2px solid transparent;
  cursor: pointer; transition: all var(--transition);
  text-decoration: none; white-space: nowrap;
}
.btn-primary {
  background: var(--primary); color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--white); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(13,148,136,.35); }

.btn-accent {
  background: var(--accent); color: var(--dark);
  border-color: var(--accent);
}
.btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: var(--dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,.35); }

.btn-ghost {
  background: transparent; color: var(--light);
  border-color: var(--dark-3);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-light); }

.btn-lg { padding: .9rem 2.2rem; font-size: 1.05rem; border-radius: var(--radius); }
.btn-xl { padding: 1.1rem 2.8rem; font-size: 1.15rem; border-radius: var(--radius); }

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(15,23,42,.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-lg); }
.nav-inner {
  display: flex; align-items: center;
  gap: 1rem; height: 68px;
}

.logo { display: flex; align-items: center; gap: .4rem; text-decoration: none; }
.logo-icon { font-size: 1.5rem; }
.logo-text { font-family: var(--font-head); font-size: 1.4rem; font-weight: 400; color: var(--white); }
.logo-text strong { color: var(--primary-light); }

.nav-links { display: flex; align-items: center; gap: .2rem; margin-left: 1.5rem; }
.nav-link {
  padding: .45rem .85rem; border-radius: var(--radius-sm);
  color: #cbd5e1; font-weight: 500; font-size: .92rem;
  background: none; border: none; cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--primary-light); background: rgba(13,148,136,.12); }

/* Dropdowns */
.nav-dropdown { position: relative; }
.dropdown-menu {
  display: none; position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--dark-2); border: 1px solid var(--dark-3);
  border-radius: var(--radius); padding: .5rem;
  min-width: 200px; box-shadow: var(--shadow-lg);
  z-index: 100;
}
.dropdown-menu a {
  display: block; padding: .55rem 1rem; border-radius: var(--radius-sm);
  color: #cbd5e1; font-size: .9rem;
  transition: all var(--transition);
}
.dropdown-menu a:hover { background: rgba(13,148,136,.15); color: var(--primary-light); }
.nav-dropdown:hover .dropdown-menu { display: block; animation: fadeDown .18s ease; }

@keyframes fadeDown { from{opacity:0;transform:translateY(-6px)} to{opacity:1;transform:translateY(0)} }

.nav-actions { margin-left: auto; display: flex; gap: .6rem; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: .3rem; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--light); border-radius: 2px; transition: all var(--transition); }

/* ── Hero Section ── */
.hero {
  padding: 100px 0 80px;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(13,148,136,.18) 0%, transparent 70%),
              linear-gradient(180deg, var(--dark) 0%, #0a1628 100%);
  text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h60v60H0z' fill='none'/%3E%3Ccircle cx='30' cy='30' r='.8' fill='%230d9488' opacity='.18'/%3E%3C/svg%3E");
  opacity: .6;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(13,148,136,.2); border: 1px solid rgba(13,148,136,.4);
  border-radius: 999px; padding: .3rem 1rem;
  font-size: .82rem; color: var(--primary-light);
  margin-bottom: 1.5rem; font-weight: 600;
}
.hero h1 span { color: var(--primary-light); }
.hero p.lead {
  font-size: 1.15rem; max-width: 600px; margin: 1.2rem auto 2rem;
  color: #94a3b8;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex; justify-content: center; gap: 3rem;
  margin-top: 4rem; flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { font-family: var(--font-head); font-size: 2rem; font-weight: 800; color: var(--white); }
.stat-label { font-size: .82rem; color: var(--muted); margin-top: .2rem; }

/* ── Upload Drop Zone ── */
.upload-zone {
  background: var(--dark-2);
  border: 2px dashed var(--dark-3);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  margin: 2.5rem auto;
  max-width: 680px;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background: rgba(13,148,136,.08);
}
.upload-icon { font-size: 3.5rem; margin-bottom: 1rem; display: block; }
.upload-zone h3 { margin-bottom: .5rem; }
.upload-zone p { font-size: .9rem; }
.upload-zone input[type="file"] { display: none; }

/* ── Tools Grid ── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.tool-card {
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  border-radius: var(--radius);
  padding: 1.4rem;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none; color: inherit;
  display: block;
}
.tool-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(13,148,136,.2);
  color: inherit;
}
.tool-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 1rem;
}
.tool-card h3 { font-size: 1rem; margin-bottom: .3rem; }
.tool-card p  { font-size: .82rem; color: var(--muted); }
.tool-badge {
  display: inline-block; padding: .15rem .6rem;
  border-radius: 999px; font-size: .7rem; font-weight: 700;
  margin-top: .6rem; text-transform: uppercase;
}
.badge-free { background: rgba(34,197,94,.15); color: #4ade80; }
.badge-pro  { background: rgba(245,158,11,.15); color: var(--accent); }

/* Category section */
.category-header {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 1.5rem;
}
.category-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
}
.category-header h2 { font-size: 1.4rem; margin: 0; }

/* ── Features Section ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition);
}
.feature-card:hover { border-color: var(--primary); }
.feature-icon { font-size: 2rem; margin-bottom: 1rem; display: block; }
.feature-card h3 { margin-bottom: .5rem; }

/* ── Pricing ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem; align-items: start; margin-top: 3rem;
}
.pricing-card {
  background: var(--dark-2);
  border: 1px solid var(--dark-3);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  position: relative;
  transition: all var(--transition);
}
.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
}
.plan-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: var(--white);
  padding: .25rem 1rem; border-radius: 999px;
  font-size: .78rem; font-weight: 700; white-space: nowrap;
}
.plan-name { font-size: 1.1rem; font-weight: 700; color: var(--primary-light); }
.plan-price { margin: 1rem 0; }
.plan-price .amount { font-family: var(--font-head); font-size: 3rem; font-weight: 800; color: var(--white); }
.plan-price .per    { font-size: .9rem; color: var(--muted); }
.plan-features { list-style: none; margin: 1.5rem 0; }
.plan-features li { padding: .5rem 0; border-bottom: 1px solid var(--dark-3); font-size: .9rem; color: #cbd5e1; }
.plan-features li:last-child { border: none; }
.plan-features li::before { content: '✓ '; color: var(--primary-light); font-weight: 700; }
.plan-features li.no::before { content: '✕ '; color: var(--muted); }
.plan-features li.no { color: var(--muted); }

/* ── Progress Bar ── */
.progress-wrap { margin: 1.5rem 0; }
.progress-label { display: flex; justify-content: space-between; margin-bottom: .4rem; font-size: .85rem; }
.progress-bar { height: 6px; background: var(--dark-3); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-light)); border-radius: 99px; transition: width 1s ease; }

/* ── Alerts / Notifications ── */
.alert {
  padding: 1rem 1.2rem; border-radius: var(--radius-sm);
  border-left: 4px solid; margin-bottom: 1rem;
  font-size: .9rem;
}
.alert-success { background: rgba(34,197,94,.1); border-color: var(--success); color: #4ade80; }
.alert-error   { background: rgba(239,68,68,.1); border-color: var(--danger); color: #f87171; }
.alert-info    { background: rgba(13,148,136,.1); border-color: var(--primary); color: var(--primary-light); }

/* ── Forms ── */
.form-group { margin-bottom: 1.2rem; }
.form-label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: .4rem; color: #cbd5e1; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: .75rem 1rem;
  background: var(--dark-3); border: 1px solid #475569;
  border-radius: var(--radius-sm);
  color: var(--white); font-family: var(--font-body); font-size: .95rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(13,148,136,.15); }
.form-textarea { resize: vertical; min-height: 120px; }

/* ── Card ── */
.card {
  background: var(--dark-2); border: 1px solid var(--dark-3);
  border-radius: var(--radius); padding: 2rem;
}

/* ── Section Heading ── */
.section-heading { text-align: center; margin-bottom: 3rem; }
.section-heading h2 span { color: var(--primary-light); }
.section-heading p { max-width: 560px; margin: .8rem auto 0; }

/* ── Testimonials ── */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.testimonial-card { background: var(--dark-2); border: 1px solid var(--dark-3); border-radius: var(--radius); padding: 1.8rem; }
.testimonial-stars { color: var(--accent); font-size: 1.1rem; margin-bottom: .8rem; }
.testimonial-text { font-size: .92rem; line-height: 1.7; color: #94a3b8; margin-bottom: 1.2rem; }
.testimonial-author { display: flex; align-items: center; gap: .8rem; }
.author-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .9rem; }
.author-name { font-weight: 600; font-size: .9rem; }
.author-role { font-size: .8rem; color: var(--muted); }

/* ── FAQ ── */
.faq-item { border-bottom: 1px solid var(--dark-3); }
.faq-question {
  width: 100%; text-align: left; padding: 1.2rem 0;
  background: none; border: none; cursor: pointer;
  color: var(--white); font-family: var(--font-head);
  font-size: 1rem; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-answer { display: none; padding-bottom: 1rem; color: #94a3b8; font-size: .92rem; line-height: 1.7; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-arrow { transition: transform var(--transition); }

/* ── Footer ── */
.footer {
  background: #080f1e;
  border-top: 1px solid var(--dark-3);
  padding: 64px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand p { font-size: .88rem; color: var(--muted); margin-top: .8rem; max-width: 260px; }
.footer-social { display: flex; gap: .8rem; margin-top: 1.2rem; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; background: var(--dark-3); display: flex; align-items: center; justify-content: center; color: var(--muted); font-weight: 700; font-size: .85rem; transition: all var(--transition); }
.footer-social a:hover { background: var(--primary); color: var(--white); }
.footer-col h3 { font-size: .9rem; font-weight: 700; color: var(--primary-light); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: .05em; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: .5rem; }
.footer-col a { color: #64748b; font-size: .88rem; transition: color var(--transition); }
.footer-col a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--dark-3); padding: 1.5rem 0;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: .8rem;
}
.footer-bottom p { font-size: .82rem; color: var(--muted); }
.footer-trust { display: flex; gap: 1.5rem; }
.footer-trust span { font-size: .82rem; color: var(--muted); }
.logo-footer .logo-text { font-size: 1.2rem; }

/* ── Breadcrumb ── */
.breadcrumb { display: flex; gap: .5rem; align-items: center; font-size: .85rem; color: var(--muted); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: var(--dark-3); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .nav-inner { justify-content: space-between; }

  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; inset: 68px 0 0 0;
    background: var(--dark); padding: 2rem 1.5rem;
    z-index: 999; gap: .3rem;
  }
  .nav-links.open .nav-link { width: 100%; text-align: left; padding: .7rem 1rem; }
  .nav-links.open .dropdown-menu { position: static; box-shadow: none; border: none; background: transparent; padding-left: 1rem; display: block; }
  .nav-actions.open { display: flex; flex-direction: column; position: fixed; bottom: 2rem; left: 1.5rem; right: 1.5rem; z-index: 999; }

  .hero { padding: 60px 0 50px; }
  .hero-stats { gap: 1.5rem; }
  .tools-grid { grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-trust { justify-content: center; }
  .pricing-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.9rem; }
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}

/* ── Utilities ── */
.text-center { text-align: center; }
.text-muted  { color: var(--muted); }
.text-primary { color: var(--primary-light); }
.text-accent  { color: var(--accent); }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.hidden { display: none; }
.flex { display: flex; } .items-center { align-items: center; } .justify-between { justify-content: space-between; } .gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; }
.w-full { width: 100%; }

/* ── Animations ── */
.fade-in { animation: fadeIn .5s ease forwards; }
@keyframes fadeIn { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

.spin { animation: spin 1.2s linear infinite; }
@keyframes spin { to{ transform: rotate(360deg); } }

/* Skeleton loader */
.skeleton { background: linear-gradient(90deg, var(--dark-2) 25%, var(--dark-3) 50%, var(--dark-2) 75%); background-size: 200% 100%; animation: skeleton 1.4s ease infinite; border-radius: var(--radius-sm); }
@keyframes skeleton { 0%{background-position:200% 0} 100%{background-position:-200% 0} }