/* NikoPDF v3 — iLovePDF-style layer (Oct 2026). Loaded AFTER styles.css.
   Light is the default theme; [data-theme="dark"] is opt-in via the header toggle. */

:root, [data-theme="light"] {
  --bg-primary: #f3f0f8;
  --bg-card: #ffffff;
  --bg-input: #f4f4f8;
  --accent: #e5322d;
  --accent-hover: #c9221d;
  --accent-soft: rgba(229, 50, 45, 0.09);
  --text: #1f1f2e;
  --text-muted: #5f6272;
  --border: #e4e4ec;
  --shadow: 0 2px 10px rgba(31, 31, 46, 0.06);
  --shadow-lg: 0 12px 34px rgba(31, 31, 46, 0.12);
  --preview-stage: #ecebf2;
  --c-organize: #e5322d; --c-optimize: #36a46a; --c-convert: #f5a623; --c-edit: #7c4ddb; --c-security: #2e6fd8;
}
[data-theme="dark"] {
  --bg-primary: #0d0e14;
  --bg-card: #171923;
  --bg-input: #1f2230;
  --accent: #ef4b45;
  --accent-hover: #ff6660;
  --accent-soft: rgba(239, 75, 69, 0.14);
  --text: #eceef4;
  --text-muted: #9a9fb0;
  --border: #2a2d3b;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 34px rgba(0, 0, 0, 0.45);
  --preview-stage: #11131b;
}
html { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }
body { font-family: 'Outfit', system-ui, sans-serif; background: var(--bg-primary); }

/* ---------- Header ---------- */
.site-header { background: var(--bg-card); padding: 0 2rem; height: 62px; box-shadow: 0 1px 0 var(--border); border-bottom: 0; }
.logo { font-size: 1.15rem; color: var(--accent); }
.logo span { font-weight: 700; font-family: 'Outfit', sans-serif; letter-spacing: -0.01em; }
.site-header nav a { font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.02em; color: var(--text); }
.site-header nav a:hover, .site-header nav a.active { color: var(--accent); }
.theme-toggle { border-radius: 50%; background: transparent; }

/* ---------- Buttons ---------- */
.btn-primary { background: var(--accent); border-radius: 12px; font-weight: 700; font-family: 'Outfit', sans-serif; letter-spacing: 0; box-shadow: 0 6px 18px rgba(229, 50, 45, 0.28); }
.btn-primary:hover { background: var(--accent-hover); }

/* ---------- Home: hero + filter + grid ---------- */
.v3-hero { text-align: center; padding: 3.2rem 1.2rem 1.4rem; }
.v3-hero h1 { font-size: clamp(1.7rem, 4vw, 2.75rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; color: var(--text); }
.v3-hero p { max-width: 760px; margin: 0.9rem auto 0; font-size: clamp(1rem, 1.6vw, 1.2rem); color: var(--text-muted); line-height: 1.55; }
.v3-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; margin: 1.6rem auto 0; padding: 0 1rem; }
.v3-filters button { font: 600 0.92rem 'Outfit', sans-serif; padding: 0.55rem 1.15rem; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text); cursor: pointer; transition: all 0.15s; }
.v3-filters button:hover { border-color: var(--text); }
.v3-filters button.active { background: var(--text); color: var(--bg-card); border-color: var(--text); }
.v3-grid { width: min(1240px, 94%); margin: 2rem auto 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.1rem; }
.v3-card { position: relative; display: flex; flex-direction: column; gap: 0.55rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 1.4rem 1.3rem 1.5rem; box-shadow: var(--shadow); transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; min-height: 172px; }
.v3-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: transparent; }
.v3-card[hidden] { display: none; }
.v3-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; color: #fff; background: var(--c, var(--accent)); }
.v3-ico svg { width: 24px; height: 24px; }
.v3-card h3 { font-size: 1.12rem; font-weight: 700; color: var(--text); margin-top: 0.25rem; }
.v3-card p { font-size: 0.9rem; line-height: 1.5; color: var(--text-muted); }
.v3-card .v3-new { position: absolute; top: 12px; right: 12px; font-size: 0.68rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: 6px; background: var(--accent-soft); color: var(--accent); }
.v3-card.featured { background: linear-gradient(135deg, var(--accent), #ff7a59); border: 0; color: #fff; }
.v3-card.featured h3, .v3-card.featured p { color: #fff; }
.v3-card.featured .v3-ico { background: rgba(255, 255, 255, 0.22); }
.cat-organize { --c: var(--c-organize); } .cat-optimize { --c: var(--c-optimize); } .cat-convert { --c: var(--c-convert); }
.cat-edit { --c: var(--c-edit); } .cat-security { --c: var(--c-security); }

.v3-band { width: min(1100px, 94%); margin: 4.5rem auto 0; text-align: center; }
.v3-band h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; color: var(--text); }
.v3-band > p { color: var(--text-muted); margin-top: 0.5rem; }
.v3-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin-top: 1.8rem; text-align: left; }
.v3-step { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 1.4rem; box-shadow: var(--shadow); }
.v3-step b { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.v3-step h3 { margin: 0.8rem 0 0.35rem; font-size: 1.05rem; color: var(--text); }
.v3-step p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }
.v3-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.6rem; margin-top: 2.2rem; color: var(--text-muted); font-size: 0.9rem; }
.v3-trust span::before { content: '✓'; color: var(--c-optimize); font-weight: 700; margin-right: 0.4rem; }

/* ---------- Tool pages: 3-state flow ---------- */
body.flow .tool-layout { display: block; width: 100%; max-width: none; margin: 0; padding: 0; }
body.flow .tool-layout .tool-page { max-width: none; width: 100%; padding: 0; margin: 0; background: none; border: 0; box-shadow: none; }
body.flow .preview-panel, body.flow .file-list, body.flow .back-link { display: none !important; }

/* state 1: empty hero */
.flow-hero { text-align: center; padding: 4rem 1.2rem 3rem; }
.flow-hero h1 { font-family: 'Outfit', sans-serif !important; font-size: clamp(1.8rem, 4vw, 2.6rem) !important; font-weight: 700; letter-spacing: -0.02em; color: var(--text); }
.flow-hero .subtitle { font-size: clamp(1rem, 1.7vw, 1.25rem) !important; color: var(--text-muted); max-width: 680px; margin: 0.7rem auto 2rem !important; }
body.flow .flow-hero .upload-zone { display: inline-flex; flex-direction: column; align-items: center; gap: 0.7rem; border: 0; background: none; padding: 0; min-height: 0; width: auto; }
body.flow .flow-hero .upload-zone input[type="file"] { display: none; }
.flow-pick { font: 700 1.35rem 'Outfit', sans-serif; color: #fff; background: var(--accent); border: 0; border-radius: 14px; padding: 1.35rem 3.6rem; cursor: pointer; box-shadow: 0 10px 26px rgba(229, 50, 45, 0.32); transition: background 0.15s, transform 0.1s; }
.flow-pick:hover { background: var(--accent-hover); }
.flow-pick:active { transform: scale(0.98); }
.flow-or { color: var(--text-muted); font-size: 0.92rem; }
.flow-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.4rem 1.2rem; margin-top: 2.2rem; color: var(--text-muted); font-size: 0.85rem; }
.flow-badges span::before { content: '✓'; color: var(--c-optimize); font-weight: 700; margin-right: 0.35rem; }
.flow-drop { position: fixed; inset: 0; z-index: 500; display: none; place-items: center; background: rgba(229, 50, 45, 0.88); color: #fff; font: 700 1.8rem 'Outfit', sans-serif; }
body.dragging .flow-drop { display: grid; }

/* state 2: workspace */
.flow-work { display: none; grid-template-columns: 1fr 360px; min-height: calc(100vh - 62px); }
body.is-ready .flow-hero, body.is-done .flow-hero { display: none; }
body.is-ready .flow-work { display: grid; }
.flow-files { padding: 2rem; background: var(--preview-stage); display: flex; flex-wrap: wrap; align-content: flex-start; justify-content: center; gap: 1.2rem; position: relative; }
.flow-card { position: relative; width: 170px; background: var(--bg-card); border-radius: 12px; padding: 0.7rem 0.7rem 0.6rem; box-shadow: var(--shadow); display: flex; flex-direction: column; align-items: center; gap: 0.45rem; border: 2px solid transparent; transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s; }
.flow-card:hover { box-shadow: var(--shadow-lg); }
.flow-card[draggable="true"] { cursor: grab; }
.flow-card.dragging { opacity: 0.35; }
.flow-card.drop-target { border-color: var(--accent); }
.flow-card.selected { border-color: var(--accent); }
.flow-thumb { width: 146px; height: 190px; display: grid; place-items: center; overflow: hidden; }
.flow-thumb canvas, .flow-thumb img { max-width: 146px; max-height: 190px; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18); background: #fff; transition: transform 0.25s; }
.flow-thumb .ph { width: 120px; height: 160px; border-radius: 6px; background: var(--bg-input); display: grid; place-items: center; color: var(--text-muted); font-size: 0.8rem; }
.flow-name { font-size: 0.8rem; font-weight: 600; color: var(--text); max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.flow-meta { font-size: 0.72rem; color: var(--text-muted); }
.flow-x { position: absolute; top: -9px; right: -9px; width: 26px; height: 26px; border-radius: 50%; border: 0; background: var(--text); color: var(--bg-card); font-size: 0.95rem; line-height: 1; cursor: pointer; opacity: 0; transition: opacity 0.15s; }
.flow-card:hover .flow-x, .flow-card:focus-within .flow-x { opacity: 1; }
@media (hover: none) { .flow-x { opacity: 1; } }
.flow-num { position: absolute; top: 8px; left: 8px; min-width: 22px; height: 22px; padding: 0 6px; border-radius: 11px; background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700; display: grid; place-items: center; }
.flow-add { position: sticky; top: 1rem; align-self: flex-start; width: 52px; height: 52px; border-radius: 50%; border: 0; background: var(--accent); color: #fff; font-size: 1.8rem; line-height: 1; cursor: pointer; box-shadow: 0 6px 16px rgba(229, 50, 45, 0.35); order: 999; }
.flow-hint { width: 100%; text-align: center; color: var(--text-muted); font-size: 0.85rem; }
.flow-side { background: var(--bg-card); border-left: 1px solid var(--border); display: flex; flex-direction: column; position: sticky; top: 62px; height: calc(100vh - 62px); }
.flow-side-head { padding: 1.3rem 1.5rem; border-bottom: 1px solid var(--border); }
.flow-side-head h2 { font-size: 1.4rem; font-weight: 700; color: var(--text); text-align: center; }
.flow-side-body { flex: 1; overflow-y: auto; padding: 1.3rem 1.5rem; }
.flow-side-body .form-row { display: block; }
.flow-side-body .form-group { margin-bottom: 1.1rem; }
.flow-side-body label { font-weight: 600; font-size: 0.85rem; color: var(--text); }
.flow-side-body input[type="text"], .flow-side-body input[type="number"], .flow-side-body input[type="password"], .flow-side-body select { width: 100%; border-radius: 10px; padding: 0.7rem 0.8rem; font-size: 0.95rem; border: 1px solid var(--border); background: var(--bg-input); color: var(--text); }
.flow-info { background: var(--accent-soft); color: var(--text); border-radius: 10px; padding: 0.8rem 0.9rem; font-size: 0.85rem; line-height: 1.45; margin-bottom: 1.1rem; }
.flow-side-foot { padding: 1.1rem 1.5rem 1.4rem; border-top: 1px solid var(--border); }
.flow-side-foot .btn-primary, .flow-side-body #processBtn { width: 100%; font-size: 1.15rem; padding: 1rem 1.2rem; display: flex; justify-content: center; align-items: center; gap: 0.6rem; margin: 0; }
.flow-side-foot .btn-primary::after { content: '➜'; font-size: 1.05rem; }
.flow-side-foot .status { margin-top: 0.7rem; text-align: center; }
.flow-busy { position: fixed; inset: 0; z-index: 400; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 1.2rem; background: color-mix(in srgb, var(--bg-primary) 94%, transparent); }
body.is-busy .flow-busy { display: flex; }
.flow-busy h2 { font-size: 1.7rem; color: var(--text); }
.flow-spin { width: 56px; height: 56px; border-radius: 50%; border: 5px solid var(--border); border-top-color: var(--accent); animation: flowspin 0.8s linear infinite; }
@keyframes flowspin { to { transform: rotate(360deg); } }

/* state 3: done */
.flow-done { display: none; text-align: center; padding: 4rem 1.2rem 2rem; }
body.is-done .flow-done { display: block; }
body.is-done .flow-work { display: none; }
.flow-done h1 { font-family: 'Outfit', sans-serif !important; font-size: clamp(1.7rem, 3.6vw, 2.4rem); font-weight: 700; color: var(--text); }
.flow-done .flow-dl { display: inline-flex; align-items: center; gap: 0.7rem; margin-top: 2rem; font: 700 1.3rem 'Outfit', sans-serif; color: #fff; background: var(--accent); border-radius: 14px; padding: 1.25rem 3rem; box-shadow: 0 10px 26px rgba(229, 50, 45, 0.32); }
.flow-done .flow-dl:hover { background: var(--accent-hover); }
.flow-done .flow-sub { margin-top: 0.9rem; color: var(--text-muted); font-size: 0.92rem; }
.flow-again { margin-top: 1.4rem; background: none; border: 0; color: var(--text-muted); font: 600 0.95rem 'Outfit', sans-serif; text-decoration: underline; cursor: pointer; }
.flow-next { width: min(900px, 94%); margin: 3rem auto 0; }
.flow-next h2 { font-size: 1.05rem; color: var(--text); margin-bottom: 1rem; }
.flow-next .chip-row { justify-content: center; }
body.is-ready .related-tools, body.is-ready .ad-region, body.is-ready .site-footer { display: none; }
body.flow .related-tools { text-align: center; }
body.flow .related-tools h2 { font-family: 'Outfit', sans-serif; font-size: 1.05rem; color: var(--text); letter-spacing: 0; }
body.flow .chip-row { justify-content: center; }
body.flow .chip-row a { color: var(--text); font-weight: 500; }

@media (max-width: 860px) {
  .flow-work { grid-template-columns: 1fr; min-height: 0; }
  .flow-files { padding: 1.2rem 0.8rem 1.4rem; gap: 0.8rem; }
  .flow-card { width: 148px; }
  .flow-thumb { width: 126px; height: 164px; }
  .flow-thumb canvas, .flow-thumb img { max-width: 126px; max-height: 164px; }
  .flow-side { position: static; height: auto; border-left: 0; border-top: 1px solid var(--border); }
  .flow-side-foot { position: sticky; bottom: 0; background: var(--bg-card); box-shadow: 0 -6px 18px rgba(0, 0, 0, 0.06); }
  .flow-add { position: static; }
  .v3-steps { grid-template-columns: 1fr; }
  .site-header { padding: 0 1rem; }
}
@media (max-width: 520px) {
  .v3-grid { grid-template-columns: 1fr 1fr; gap: 0.7rem; }
  .v3-card { padding: 1rem 0.9rem; min-height: 0; }
  .v3-card p { display: none; }
  .v3-card h3 { font-size: 0.98rem; }
  .v3-ico { width: 40px; height: 40px; }
  .v3-filters { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
  .v3-filters button { flex: none; }
  .flow-pick { width: 100%; padding: 1.2rem 1rem; }
  body.flow .flow-hero .upload-zone { display: flex; width: 100%; }
}