:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --ink: #17181c;
  --ink2: #5b5d66;
  --ink3: #8a8c94;
  --border: #e4e2dc;
  --navy: #1a2744;
  --navy2: #253360;
  --purple: #534ab7;
  --purple-bg: #eeedfe;
  --accent-bg: #e7ecf7;
  --ok: #1b5e20;
  --ok-bg: #e8f5e9;
  --error: #b71c1c;
  --error-bg: #fce4ec;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(23,24,28,0.04), 0 8px 24px rgba(23,24,28,0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
h1, h2, h3 { font-family: Georgia, 'DM Serif Display', serif; font-weight: 400; margin: 0; }
a { color: var(--navy); }
.hidden { display: none !important; }

/* TOPBAR */
.topbar { border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 10; }
.topbar-inner { max-width: 1080px; margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { font-family: Georgia, serif; font-size: 20px; font-weight: 700; color: var(--ink); text-decoration: none; }
.gh-link { font-size: 13px; color: var(--ink2); text-decoration: none; }
.gh-link:hover { color: var(--navy); }

/* HERO */
.hero { padding: 72px 24px 48px; }
.hero-inner { max-width: 760px; margin: 0 auto; text-align: center; }
.eyebrow { display: inline-block; font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--purple); background: var(--purple-bg); padding: 5px 12px; border-radius: 20px; margin-bottom: 22px; font-weight: 600; }
.hero h1 { font-size: 42px; line-height: 1.2; color: var(--navy); margin-bottom: 20px; }
.hero-sub { font-size: 17px; color: var(--ink2); max-width: 620px; margin: 0 auto 30px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.feature-pills { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.pill { font-size: 12.5px; color: var(--ink2); background: var(--surface); border: 1px solid var(--border); padding: 7px 14px; border-radius: 20px; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 600; padding: 12px 22px; border-radius: 10px; border: none; cursor: pointer; text-decoration: none; transition: transform 0.1s ease, box-shadow 0.15s ease; }
.btn-primary { background: var(--navy); color: white; }
.btn-primary:hover { box-shadow: 0 4px 14px rgba(26,39,68,0.28); transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-ghost { background: var(--surface); color: var(--navy); border: 1.5px solid var(--border); }
.btn-ghost:hover { border-color: var(--navy); }
.btn-generate { width: 100%; margin-top: 22px; padding: 14px 22px; font-size: 16px; }

/* TOOL SECTION */
.tool-section { max-width: 880px; margin: 0 auto; padding: 8px 24px 64px; display: flex; flex-direction: column; gap: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 30px; box-shadow: var(--shadow); }
.card-title { font-size: 21px; color: var(--navy); margin-bottom: 6px; }
.card-title.with-margin { margin-top: 30px; }
.card-hint { font-size: 13.5px; color: var(--ink3); margin: 0 0 18px; }

/* DROPZONE */
.dropzone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 34px 20px; text-align: center; cursor: pointer; transition: border-color 0.15s, background 0.15s; color: var(--ink2); }
.dropzone:hover, .dropzone.drag { border-color: var(--navy); background: var(--accent-bg); }
.dropzone-icon { font-size: 28px; margin-bottom: 8px; }
.dropzone-sub { font-size: 12.5px; color: var(--ink3); margin-top: 6px; }

/* FILE LIST */
.file-list { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.file-row { display: flex; align-items: center; gap: 10px; padding: 9px 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; font-size: 13.5px; }
.file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { color: var(--ink3); font-size: 12px; }
.badge { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.4px; padding: 2px 8px; border-radius: 10px; }
.badge-pending { background: #fff8e1; color: #e65100; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-error { background: var(--error-bg); color: var(--error); }
.file-remove { background: none; border: none; cursor: pointer; color: var(--ink3); font-size: 14px; padding: 2px 4px; }
.file-remove:hover { color: var(--error); }

/* PASTE */
.paste-details { margin-top: 16px; }
.paste-details summary { cursor: pointer; font-size: 13.5px; color: var(--navy); font-weight: 600; }
.paste-area { width: 100%; min-height: 110px; margin-top: 10px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 13.5px; resize: vertical; }

/* SETTINGS GRID */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; }
.field-wide { grid-column: 1 / -1; }
.field-label { font-weight: 600; color: var(--ink); }
.field-label .req { color: var(--error); font-weight: 600; font-size: 11px; text-transform: uppercase; margin-left: 4px; }
.field-label .opt { color: var(--ink3); font-weight: 500; font-size: 11px; text-transform: uppercase; margin-left: 4px; }
.field input[type="text"], .field input[type="password"], .field select {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: inherit; background: var(--surface); color: var(--ink);
}
.field input:focus, .field select:focus, .paste-area:focus { outline: 2px solid var(--purple); outline-offset: 1px; }
.checkbox-field { flex-direction: row; align-items: center; gap: 8px; font-size: 13px; color: var(--ink2); }
.checkbox-field input { width: 16px; height: 16px; }

/* STATUS / WARNINGS */
.status { margin-top: 14px; font-size: 13.5px; min-height: 18px; }
.status-busy { color: var(--purple); }
.status-ok { color: var(--ok); }
.status-error { color: var(--error); font-weight: 600; }
.warnings { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.warning-item { font-size: 12.5px; color: #854f0b; background: #faeeda; border-radius: 8px; padding: 8px 12px; }

/* OUTPUT */
.output-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.view-tabs { display: flex; gap: 6px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 3px; }
.view-tab { border: none; background: none; padding: 6px 14px; font-size: 12.5px; font-weight: 600; color: var(--ink2); border-radius: 6px; cursor: pointer; }
.view-tab.active { background: var(--surface); color: var(--navy); box-shadow: var(--shadow); }
.preview-frame { width: 100%; height: 640px; border: 1px solid var(--border); border-radius: var(--radius); background: white; }
.code-view { width: 100%; height: 640px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); background: #1a2744; color: #d7e0f5; padding: 18px; font-family: 'JetBrains Mono', Consolas, monospace; font-size: 12px; white-space: pre-wrap; word-break: break-word; }
.output-actions { display: flex; gap: 10px; margin-top: 16px; }

/* HOW IT WORKS */
.how-section { max-width: 960px; margin: 0 auto; padding: 20px 24px 72px; text-align: center; }
.section-title { font-size: 28px; color: var(--navy); margin-bottom: 36px; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; text-align: left; }
.how-step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.how-num { width: 30px; height: 30px; border-radius: 50%; background: var(--navy); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; margin-bottom: 12px; font-family: 'JetBrains Mono', monospace; }
.how-step h3 { font-family: -apple-system, sans-serif; font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.how-step p { font-size: 13.5px; color: var(--ink2); margin: 0; }
.privacy-note { margin-top: 30px; font-size: 12.5px; color: var(--ink3); max-width: 620px; margin-left: auto; margin-right: auto; }

/* FOOTER */
.site-footer { text-align: center; padding: 28px 24px 40px; font-size: 12.5px; color: var(--ink3); border-top: 1px solid var(--border); }
.site-footer a { color: var(--ink2); }

@media (max-width: 720px) {
  .hero h1 { font-size: 30px; }
  .settings-grid { grid-template-columns: 1fr; }
  .how-grid { grid-template-columns: 1fr; }
  .card { padding: 22px 18px; }
}