/* ─── Konta dark design system (matches Android app) ─────────────────────── */

:root {
  --bg: #0E0E12;
  --surface: #161620;
  --surface-2: #1E1E2A;
  --primary: #5DCAA5;          /* mint green — icons, links, free badge, buttons */
  --primary-dim: #1A3D33;
  --accent: #D7E84A;           /* yellow — section headers, highlights */
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.60);
  --text-hint: rgba(255, 255, 255, 0.40);
  --button-bg: #5DCAA5;
  --button-text: #0E0E12;
  --danger: #FF6B6B;
  --hover-bg: rgba(255, 255, 255, 0.05);
  --hover-bg-strong: rgba(255, 255, 255, 0.10);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.45;
}

input, textarea, pre, .res-sub, .file-name, .empty-state { user-select: text; }

button { font-family: inherit; }

.badge.pro {
  background: var(--hover-bg-strong);
  color: var(--text-secondary);
}

a.ghost-btn { text-decoration: none; display: block; text-align: center; }

#sidebar { min-height: 100vh; }

#app {
  display: grid;
  grid-template-columns: 248px 1fr;
  height: 100vh;
}

/* ─── Mobile hamburger ─────────────────────────────────────────────────── */

#menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 0 0 auto;
}
#menu-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
}

#sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}
#sidebar-backdrop.open { opacity: 1; pointer-events: auto; }

@media (max-width: 760px) {
  #app { grid-template-columns: 1fr; }
  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    max-width: 86vw;
    height: 100vh;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 200ms ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
  }
  #sidebar.open { transform: translateX(0); }
  #menu-toggle { display: flex; }
  #topbar { padding: 14px 18px; gap: 12px; display: flex; align-items: center; }
  #page-title { font-size: 16px; }
  #page-container { padding: 18px 16px 32px; }
}

/* ─── Sidebar ─────────────────────────────────────────────────────────── */

#sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 18px 18px;
  border-bottom: 1px solid var(--border);
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: block;
  flex: 0 0 auto;
}

.logo-title { font-weight: 700; font-size: 17px; }
.logo-sub { color: var(--text-secondary); font-size: 13px; margin-top: 1px; }

.nav-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
  gap: 2px;
}

.nav-section {
  font-size: 13px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 14px 10px 6px;
}

.nav-status {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 2px 12px 8px;
}
.nav-status-value {
  font-weight: 700;
  color: var(--text-secondary);
}
.nav-status-value.is-premium {
  color: var(--accent);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  text-align: left;
  transition: background 120ms ease, border-color 120ms ease;
}
.nav-item:hover { background: var(--hover-bg); }
.nav-item.active {
  background: var(--surface-2);
  border-color: var(--border-strong);
}
.nav-icon {
  width: 22px;
  text-align: center;
  color: var(--primary);
  font-weight: 600;
}
.nav-label { flex: 1; }

.badge {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 999px;
  font-weight: 700;
}
.badge.free {
  background: var(--primary-dim);
  color: var(--primary);
}
.badge.premium {
  background: rgba(215, 232, 74, 0.12);
  color: var(--accent);
}
.badge.unlocked {
  background: var(--primary-dim);
  color: var(--primary);
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
}
.language-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}
.language-switch button {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}
.language-switch button.active {
  background: var(--surface-2);
  color: var(--primary);
  border-color: var(--primary);
}
.ghost-btn {
  width: 100%;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 14px;
  cursor: pointer;
  transition: background 120ms ease;
}
.ghost-btn:hover { background: var(--hover-bg); }
.version {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-hint);
  text-align: center;
}

/* ─── Main ─────────────────────────────────────────────────────────────── */

#main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#topbar {
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
#page-title { font-size: 18px; margin: 0; font-weight: 700; }

#page-container {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px 40px;
}

/* ─── Cards ────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin: 0 0 12px;
  font-weight: 700;
}

.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: 14px;
  padding: 38px 20px;
  text-align: center;
  color: var(--text-hint);
}

/* ─── Buttons ──────────────────────────────────────────────────────────── */

.btn {
  background: var(--primary);
  color: var(--button-text);
  border: 0;
  border-radius: 14px;
  padding: 11px 18px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 120ms ease, transform 80ms ease;
}
.btn:hover { opacity: 0.92; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { background: var(--hover-bg); }

/* ─── Inputs ───────────────────────────────────────────────────────────── */

.input, .textarea, select.input {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 11px 13px;
  font-size: 13px;
  width: 100%;
  outline: none;
  transition: border-color 120ms ease;
  font-family: inherit;
}
.input:focus, .textarea:focus, select.input:focus {
  border-color: var(--primary);
}
label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.field { margin-bottom: 14px; }
.field-error {
  margin-top: 6px;
  font-size: 11px;
  color: var(--danger);
}

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > * { flex: 0 0 auto; }
.row.spread { justify-content: space-between; }

.radio-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
}
.radio-pill input { accent-color: var(--primary); }
.radio-pill.checked {
  background: var(--primary-dim);
  border-color: var(--primary);
  color: var(--primary);
}

/* ─── File list ────────────────────────────────────────────────────────── */

.file-list { display: flex; flex-direction: column; gap: 8px; }
.file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}
.file-row .file-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--primary-dim);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  flex: 0 0 auto;
}
.file-row .file-meta { flex: 1; min-width: 0; }
.file-row .file-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-row .file-sub {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}
.file-row .icon-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 0;
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
  border-radius: 8px;
}
.file-row .icon-btn:hover { background: var(--hover-bg); color: var(--text-primary); }

/* ─── Tool grid on home ────────────────────────────────────────────────── */

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 14px;
  text-align: center;
  cursor: pointer;
  transition: border-color 120ms ease, transform 80ms ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.tool-card:hover { border-color: var(--primary); }
.tool-card .tool-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary-dim);
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tool-card .tool-name { font-weight: 700; font-size: 13px; }
.tool-card .tool-tag { font-size: 10px; color: var(--primary); letter-spacing: 0.08em; text-transform: uppercase; }
.tool-card .tool-tag.premium { color: var(--accent); }

.premium-strip {
  margin-top: 16px;
  background: var(--surface);
  border: 1px solid rgba(215, 232, 74, 0.32);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-secondary);
}
.premium-strip strong { color: var(--accent); }
.premium-strip .btn { padding: 9px 14px; }

/* ─── Result card ──────────────────────────────────────────────────────── */

.result-card {
  background: var(--primary-dim);
  border: 1px solid var(--primary);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}
.result-card .check {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: var(--button-text);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.result-card .res-title { font-weight: 700; }
.result-card .res-sub { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }
.result-card .res-actions { display: flex; gap: 6px; margin-left: auto; }
.result-card .res-actions button {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 11px;
  cursor: pointer;
}

/* ─── Reorder grid ─────────────────────────────────────────────────────── */

.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}
.page-thumb {
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  overflow: hidden;
  cursor: grab;
  position: relative;
  user-select: none;
}
.page-thumb img { width: 100%; display: block; }
.page-thumb .pg-num {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
}
.page-thumb.dragging { opacity: 0.5; }
.page-thumb.drag-over { border-color: var(--primary); }

/* ─── Toast / modal ────────────────────────────────────────────────────── */

#toast-host {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
  pointer-events: none;
}
.toast {
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  pointer-events: auto;
}
.toast.error { border-color: var(--danger); }

#modal-host {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  z-index: 999;
}
#modal-host.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 24px;
  min-width: 320px;
  max-width: 480px;
  text-align: center;
}
.modal .spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--border-strong);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 14px;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Scrollbar ────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.25); }

/* ─── Footer ──────────────────────────────────────────────────────────── */

.site-footer {
  margin-top: 40px;
  padding: 24px 0 4px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  color: var(--text-secondary);
  font-size: 14px;
  text-align: center;
}
.site-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 4px;
  justify-content: center;
  align-items: center;
}
.site-footer .footer-link {
  background: none;
  border: 0;
  padding: 4px 10px;
  color: var(--text-secondary);
  font: inherit;
  cursor: pointer;
  border-radius: 6px;
  text-decoration: none;
}
.site-footer .footer-link:hover { background: var(--hover-bg); color: var(--text-primary); }
.site-footer .footer-sep { color: var(--text-hint); user-select: none; }
.site-footer .footer-meta { color: var(--text-hint); }
.site-footer .footer-meta a { color: var(--text-secondary); text-decoration: none; font-weight: 600; }
.site-footer .footer-meta a:hover { color: var(--primary); }

/* ─── Static content pages (about/privacy/terms) ─────────────────────── */

.content-page { max-width: 720px; }
.content-page h2 {
  font-size: 22px;
  margin: 0 0 8px;
  font-weight: 700;
}
.content-page .lede {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 24px;
}
.content-page h3 {
  font-size: 15px;
  margin: 24px 0 8px;
  font-weight: 700;
}
.content-page p, .content-page li {
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
}
.content-page ul { padding-left: 20px; margin: 8px 0 12px; }
.content-page a { color: var(--primary); text-decoration: none; }
.content-page a:hover { text-decoration: underline; }
.content-page .contact-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-top: 14px;
  font-size: 13px;
}

/* ─── Premium page ─────────────────────────────────────────────────────── */

.premium-page {
  max-width: 860px;
}
.premium-hero {
  border-color: rgba(215, 232, 74, 0.32);
}
.premium-kicker {
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.premium-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}
.premium-copy {
  color: var(--text-secondary);
  margin: 0 0 16px;
  max-width: 680px;
}
.premium-price {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 16px;
}
.premium-price-amount {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
}
.premium-price-note {
  font-size: 13px;
  color: var(--text-secondary);
}
.premium-strip-price {
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}
.premium-strip-price::before {
  content: '· ';
  color: var(--text-secondary);
}
.premium-actions,
.premium-license-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.premium-buy {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.premium-status {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 14px;
}
.premium-status.active {
  background: var(--primary-dim);
  border-color: var(--primary);
}
.premium-status-title {
  font-weight: 800;
  color: var(--text-primary);
}
.premium-status-sub,
.field-note {
  color: var(--text-secondary);
  font-size: 12px;
  margin-top: 4px;
}
.license-field {
  margin-bottom: 0;
}
.license-input {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.comparison-grid {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 92px 92px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.comparison-head,
.comparison-tool,
.comparison-cell {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.comparison-head {
  color: var(--text-hint);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--surface-2);
}
.comparison-tool {
  color: var(--text-secondary);
  font-size: 13px;
}
.comparison-cell {
  color: var(--text-hint);
  text-align: center;
  font-weight: 800;
}
.comparison-grid > :nth-last-child(-n + 3) {
  border-bottom: 0;
}
.premium-col {
  color: var(--primary);
}
.comparison-price-label,
.comparison-price-cell {
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 15px;
}
.comparison-price-label {
  color: var(--text-primary);
  font-weight: 700;
}
.comparison-price-cell {
  font-weight: 800;
}
.comparison-price-cell.premium-col {
  color: var(--accent);
}

/* ─── Desktop download page ───────────────────────────────────────────── */

.desktop-page {
  max-width: 760px;
  margin: 0 auto;
}
.desktop-hero {
  border-color: rgba(93, 202, 165, 0.32);
}
.desktop-download-host {
  margin-top: 18px;
}
.desktop-download-btn {
  width: 100%;
  justify-content: center;
  text-align: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  font-size: 15px;
}
.desktop-download-btn.is-loading {
  opacity: 0.55;
  pointer-events: none;
}
.desktop-os-links {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.desktop-os-title {
  width: 100%;
  text-align: center;
  color: var(--text-hint);
  font-size: 12px;
}
.desktop-os-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  padding: 4px 8px;
  border-radius: 8px;
}
.desktop-os-links a:hover {
  background: var(--hover-bg);
  color: var(--primary);
}

@media (max-width: 560px) {
  .premium-strip {
    align-items: stretch;
    flex-direction: column;
  }
  .premium-strip .btn,
  .premium-actions .btn,
  .premium-actions .premium-buy,
  .premium-license-actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .comparison-grid {
    grid-template-columns: minmax(130px, 1fr) 68px 78px;
  }
  .comparison-head,
  .comparison-tool,
  .comparison-cell {
    padding: 9px 8px;
  }
}