/* Rocket Tools — shared theme. Three palettes selected via html[data-theme]:
   light (default, cream/gold) · dark (warm night) · neo (neo-brutalism).
   Palette colours are exposed as CSS variables so every page recolours by
   swapping the data-theme attribute; structural neo overrides live below. */

/* ── light (default) ── */
:root, html[data-theme="light"] {
  --bg: #FDFAF5;
  --ink: #1A1A1A;
  --gold: #C8A96E;
  --gold-soft: #E5D5B4;
  --card: #F0EBE1;
  --muted: #8A8378;
  --line: #E6DFD2;
  --good: #4C7A4C;
  --bad: #B05B4C;
  --radius: 22px;
  --shadow: 0 18px 50px -22px rgba(26, 26, 26, 0.18);
  --mono: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;

  /* semantic surface tokens (theme-aware replacements for former hardcodes) */
  --card-border: rgba(255, 255, 255, 0.6);
  --topbar-bg: rgba(253, 250, 245, 0.92);
  --topbar-blur: blur(14px) saturate(1.4);
  --on-accent: #fff;          /* text/icon colour on a gold/accent fill */
  --accent-ring: rgba(200, 169, 110, 0.15);
  --sel: rgba(200, 169, 110, 0.35);
}

/* ── dark (warm night) ── */
html[data-theme="dark"] {
  --bg: #17140F;
  --ink: #F3ECDD;
  --gold: #D8B87A;
  --gold-soft: #4A4032;
  --card: #221E17;
  --muted: #A79E8C;
  --line: #332E24;
  --good: #6FB06B;
  --bad: #E0796A;
  --radius: 22px;
  --shadow: 0 20px 50px -22px rgba(0, 0, 0, 0.65);

  --card-border: rgba(255, 255, 255, 0.05);
  --topbar-bg: rgba(23, 20, 15, 0.85);
  --topbar-blur: blur(14px) saturate(1.4);
  --on-accent: #17140F;
  --accent-ring: rgba(216, 184, 122, 0.18);
  --sel: rgba(216, 184, 122, 0.30);
}

/* ── neo-brutalism (Folio palette: flat fills, black outlines, hard shadows) ── */
html[data-theme="neo"] {
  --bg: #FFE7CD;
  --ink: #191410;
  --gold: #FF6A1F;            /* the accent is a bold orange here */
  --gold-soft: #191410;       /* separators/dashes go hard black */
  --card: #FFFAF2;
  --muted: #7C6752;
  --line: #191410;
  --good: #17864A;
  --bad: #D8382D;
  --radius: 14px;
  --shadow: 5px 5px 0 0 #191410;   /* the brutal offset block */

  --card-border: #191410;
  --topbar-bg: #FFE7CD;            /* solid — no glass */
  --topbar-blur: none;
  --on-accent: #191410;           /* black text rides on the orange fill */
  --accent-ring: rgba(255, 106, 31, 0.30);
  --sel: rgba(255, 106, 31, 0.30);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

/* brief cross-fade while switching themes (added by theme.js, then removed) */
html.theme-anim, html.theme-anim *, html.theme-anim *::before, html.theme-anim *::after {
  transition: background-color 0.3s ease, color 0.3s ease,
              border-color 0.3s ease, box-shadow 0.3s ease, fill 0.3s ease !important;
}

/* ── top bar (tool pages) ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 54px;
  padding: 8px 16px;
  padding-right: 116px;          /* clear room for the fixed theme switcher */
  background: var(--topbar-bg);
  backdrop-filter: var(--topbar-blur);
  -webkit-backdrop-filter: var(--topbar-blur);
  border-bottom: 1px solid var(--line);
}
.nav-home {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px 6px 7px;
  border-radius: 99px;
  transition: color 0.2s, background 0.2s, transform 0.15s;
  white-space: nowrap;
}
.nav-home:hover { color: var(--ink); background: var(--card); }
.nav-home:active { transform: scale(0.96); }
.nav-home svg { display: block; flex-shrink: 0; }
.nav-sep {
  color: var(--gold-soft);
  font-size: 15px;
  font-weight: 500;
  user-select: none;
}
.topbar h1, .nav-title {
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
  margin-left: 4px;
  display: flex;
  align-items: center;
}
.topbar .spacer { flex: 1; }
.topbar .hint { font-size: 12px; color: var(--muted); font-weight: 500; white-space: nowrap; margin-right: 4px; }
@media (max-width: 640px) {
  .topbar .hint { display: none; }
  .nav-home span { display: none; }
  .nav-home { padding: 6px 8px; }
}

/* ── buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  border: none;
  border-radius: 14px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s, opacity 0.18s, background 0.18s, border-color 0.18s;
}
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn-dark { background: var(--ink); color: var(--bg); }
.btn-dark:hover { opacity: 0.88; }
.btn-gold { background: var(--gold); color: var(--on-accent); }
.btn-gold:hover { opacity: 0.9; }
.btn-ghost { background: var(--bg); color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--gold); }
.btn-sm { padding: 8px 14px; font-size: 12.5px; border-radius: 10px; }
.btn-danger-ghost { background: transparent; color: var(--bad); border: 1.5px solid var(--line); }
.btn-danger-ghost:hover { border-color: var(--bad); }

/* ── cards & misc ── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--card-border);
}
.fade-in { animation: fadeUp 0.45s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

input.field, textarea.field {
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: 13px;
  padding: 12px 15px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input.field:focus, textarea.field:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--accent-ring);
}
input.field::placeholder, textarea.field::placeholder { color: var(--muted); }

.toast {
  position: fixed;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  font-size: 13.5px; font-weight: 600;
  padding: 11px 22px;
  border-radius: 99px;
  box-shadow: 0 12px 30px -8px rgba(26, 26, 26, 0.4);
  animation: toastUp 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
  z-index: 100;
  white-space: nowrap;
  pointer-events: none;
}
@keyframes toastUp {
  from { opacity: 0; transform: translate(-50%, 16px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

::selection { background: var(--sel); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--gold-soft); border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-track { background: transparent; }

/* ═══════════════════════════════════════════════════════════════
   NEO-BRUTALISM structural overrides — flat surfaces, thick black
   outlines, hard offset shadows, squared corners, no glass blur.
   ═══════════════════════════════════════════════════════════════ */
html[data-theme="neo"] .topbar {
  border-bottom: 3px solid var(--ink);
}
html[data-theme="neo"] .nav-home:hover { background: var(--accent-ring); }

html[data-theme="neo"] .card {
  border: 3px solid var(--ink);
  box-shadow: 5px 5px 0 0 var(--ink);
}

html[data-theme="neo"] .btn {
  border: 2px solid var(--ink);
  border-radius: 11px;
  font-weight: 800;
  box-shadow: 3px 3px 0 0 var(--ink);
  transition: transform 0.08s ease, box-shadow 0.08s ease, opacity 0.18s ease;
}
html[data-theme="neo"] .btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 0 var(--ink); opacity: 1; }
html[data-theme="neo"] .btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 0 var(--ink); }
html[data-theme="neo"] .btn-gold { background: var(--gold); color: var(--on-accent); }
html[data-theme="neo"] .btn-ghost { background: transparent; }
html[data-theme="neo"] .btn-sm { box-shadow: 2px 2px 0 0 var(--ink); }

html[data-theme="neo"] input.field, html[data-theme="neo"] textarea.field {
  border: 2px solid var(--ink);
  border-radius: 10px;
}
html[data-theme="neo"] input.field:focus, html[data-theme="neo"] textarea.field:focus {
  border-color: var(--gold);
  box-shadow: 3px 3px 0 0 var(--gold);
}

html[data-theme="neo"] .toast {
  border: 2px solid var(--ink);
  border-radius: 12px;
  box-shadow: 4px 4px 0 0 var(--ink);
  font-weight: 700;
}

html[data-theme="neo"] ::-webkit-scrollbar-thumb { border-radius: 0; background: var(--ink); }

/* ── the theme switcher (injected by theme.js) ── */
.rt-theme-switch {
  position: fixed;
  top: 9px; right: 12px;
  z-index: 200;
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 99px;
  box-shadow: 0 6px 20px -10px rgba(0, 0, 0, 0.35);
}
.rt-theme-switch button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  padding: 0;
  border: none;
  border-radius: 99px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, transform 0.15s;
}
.rt-theme-switch button:hover { color: var(--ink); }
.rt-theme-switch button:active { transform: scale(0.9); }
.rt-theme-switch button.active { background: var(--gold); color: var(--on-accent); }
.rt-theme-switch button svg { display: block; width: 16px; height: 16px; }
html[data-theme="neo"] .rt-theme-switch {
  border: 2px solid var(--ink);
  border-radius: 12px;
  box-shadow: 3px 3px 0 0 var(--ink);
}
html[data-theme="neo"] .rt-theme-switch button { border-radius: 8px; }
html[data-theme="neo"] .rt-theme-switch button.active { border-radius: 8px; }
@media (max-width: 640px) {
  .rt-theme-switch button { width: 27px; height: 27px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}