/* Minimal, fast, responsive base styles */
:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --card: #f8fafc;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --accent: #10b981;
  --accent-600: #059669;
  --gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #10b981 100%);
  --shadow: 0 8px 24px rgba(2, 6, 23, 0.06);
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; margin: 0; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select { font: inherit; }

/* Navbar */
.navbar { position: sticky; top: 0; background: var(--bg); border-bottom: 1px solid var(--border); z-index: 10; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; max-width: 1100px; margin: 0 auto; }
.logo { font-weight: 700; letter-spacing: 0.2px; }
.nav-actions { display: flex; gap: 10px; align-items: center; }
.dropdown { position: relative; }
.dropdown-menu { position: absolute; top: calc(100% + 8px); right: 0; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; display: none; min-width: 240px; }
.dropdown.open .dropdown-menu { display: block; }
.dropdown-item { display: block; padding: 10px 12px; border-radius: 10px; color: var(--muted); }
.dropdown-item:hover { background: var(--card); color: var(--text); }

/* Buttons */
.btn-primary, .btn, .btn.ghost, .btn.primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); color: var(--text); box-shadow: var(--shadow); transition: transform 160ms ease, box-shadow 160ms ease; }
.btn-primary, .btn.primary { background: var(--primary); color: white; border-color: transparent; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(2,6,23,0.08); }
.btn.ghost { background: var(--bg); color: var(--text); }

/* Hero */
.hero { padding: 56px 20px; background: radial-gradient(1200px 400px at 50% -200px, rgba(37, 99, 235, 0.12), transparent), radial-gradient(800px 300px at 10% -150px, rgba(124, 58, 237, 0.10), transparent); }
.hero-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.hero h1 { font-size: 32px; margin: 0 0 8px; }
.subtitle { color: var(--muted); margin: 0 0 18px; }
.upload-cta { margin: 12px 0 0; }

/* Tools grid */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; padding: 20px; max-width: 1100px; margin: 0 auto; }
.tool-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); transition: transform 160ms ease, box-shadow 160ms ease; display: block; }
.tool-card:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(2,6,23,0.10); border-color: #dbe2ea; }
.tool-card .icon { font-size: 22px; }
.tool-card h3 { margin: 8px 0 4px; font-size: 18px; }
.tool-card p { margin: 0; color: var(--muted); }

/* Colored badges and sections */
.section { padding: 28px 20px; }
.section-inner { max-width: 1100px; margin: 0 auto; }
.section h2 { font-size: 24px; margin: 0 0 12px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.feature { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.feature .badge { display: inline-block; font-size: 12px; padding: 6px 10px; border-radius: 999px; color: #fff; margin-bottom: 10px; }
.badge.blue { background: var(--primary-600); }
.badge.purple { background: #7c3aed; }
.badge.green { background: var(--accent-600); }
.how-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.step { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.faq { display: grid; gap: 10px; }
.faq details { border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; background: var(--bg); }
.formats { display: flex; flex-wrap: wrap; gap: 8px; }
.format-tag { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 6px 10px; border-radius: 999px; font-size: 13px; }

/* Tool page layout */
.page { max-width: 1100px; margin: 0 auto; padding: 22px; }
.panel { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
/* Tool page layout */
.tool-header { text-align: center; margin: 12px 20px; }
.tool-header h1 { margin: 0; text-align: center; }
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 1100px; margin: 0 auto; padding: 20px; }
.tool-left .panel + .panel, .tool-right .panel + .panel { margin-top: 16px; }
.preview-canvas { width: 100%; height: auto; display: block; }
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 12px; }
.control { display: flex; flex-direction: column; gap: 6px; }
.control label { font-weight: 500; }
.muted { color: var(--muted); }

/* Dropzone */
.dropzone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 24px; text-align: center; color: var(--muted); }
.dropzone input { display: none; }
.dropzone.dragover { background: var(--card); }
.preview-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-top: 12px; }
.preview-item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.preview-item canvas, .preview-item img { width: 100%; height: auto; display: block; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 24px 20px; margin-top: 40px; background: radial-gradient(800px 300px at 90% 120%, rgba(16, 185, 129, 0.06), transparent); }
.footer-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-nav { display: flex; gap: 12px; }
.footer-link { color: var(--muted); }

/* Inputs */
.input, select, .range { width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); }
.range { padding: 0; }

@media (max-width: 1024px) {
  .nav-inner { padding: 12px 14px; }
  .nav-actions { display: none; }
  .hamburger { display: inline-flex !important; }
  .hero { padding: 32px 14px; }
  .tools-grid { padding: 14px; }
  .page { padding: 14px; }
}

/* Mobile menu & hamburger */
.hamburger { display: none; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); box-shadow: var(--shadow); flex-direction: column; gap: 4px; }
.hamburger .bar { width: 22px; height: 3px; background: #000; display: block; border-radius: 2px; }
.mobile-menu { position: fixed; top: 60px; left: 10px; right: 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; display: none; z-index: 100; }
.mobile-menu.open { display: block; }
.mobile-item { display: block; padding: 12px 14px; border-radius: 10px; color: var(--muted); }
.mobile-item:hover { background: var(--card); color: var(--text); }