/*
 * Seclusa Convert — app styles.
 *
 * The palette lives in seclusa-base.css. No colour of our own beyond the
 * status colours the base theme already defines.
 */

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: transparent;
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 2px; }

/* ---------------------------------------------------------------- top bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}

.topbar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 56px;
  padding: max(10px, env(safe-area-inset-top)) 12px 10px;
  max-width: 760px;
  margin: 0 auto;
}

.brand {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

button.accentpill {
  flex: none;
  height: 34px;
  min-width: 52px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
button.accentpill:hover { filter: brightness(1.08); }
button.accentpill:active { transform: scale(.96); }

/* -------------------------------------------------------------- sheets */

.scrim {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}
.scrim.open { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: var(--surface);
  border-radius: 20px 20px 0 0;
  padding: 6px 10px calc(12px + env(safe-area-inset-bottom));
  transform: translateY(100%);
  visibility: hidden;
  max-height: 85vh;
  overflow-y: auto;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s linear 0.2s;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.22);
  border: 1px solid var(--border);
  border-bottom: none;
}
.sheet.open {
  transform: none;
  visibility: visible;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s;
}
.sheet-handle {
  width: 36px;
  height: 4px;
  border-radius: 999px;
  background: var(--border);
  margin: 4px auto 10px;
}
.sheet h3 {
  margin: 2px 14px 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.sheet .note {
  padding: 8px 14px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
}

.theme-mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 14px 12px;
}

.theme-chip {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
}
.theme-chip[aria-checked="true"] {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.theme-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 4px 14px 16px;
}
.theme-swatch {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 2px solid var(--border-strong);
  background: var(--swatch, #888);
  padding: 0;
  cursor: pointer;
  flex: none;
}
.theme-swatch[data-bg-opt="grid"] {
  background:
    linear-gradient(rgba(196, 94, 18, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 94, 18, 0.4) 1px, transparent 1px),
    radial-gradient(circle at 30% 30%, rgba(196, 94, 18, 0.35), transparent 65%),
    #1a1a1a;
  background-size: 7px 7px, 7px 7px, auto, auto;
}
.theme-swatch[data-bg-opt="blue"] { --swatch: #3b82f6; }
.theme-swatch[data-bg-opt="lightblue"] { --swatch: #7dd3fc; }
.theme-swatch[data-bg-opt="teal"] { --swatch: #14b8a6; }
.theme-swatch[data-bg-opt="green"] { --swatch: #22c55e; }
.theme-swatch[data-bg-opt="yellow"] { --swatch: #facc15; }
.theme-swatch[data-bg-opt="orange"] { --swatch: #f97316; }
.theme-swatch[data-bg-opt="red"] { --swatch: #ef4444; }
.theme-swatch[data-bg-opt="purple"] { --swatch: #a855f7; }
.theme-swatch[data-bg-opt="black"] { --swatch: #0a0a0a; }
.theme-swatch[data-bg-opt="white"] { --swatch: #ffffff; }
.theme-swatch[aria-checked="true"] {
  border-color: var(--text);
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--text);
}
.theme-swatch-custom {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at center, var(--swatch, var(--bg-custom, #5faff0)) 54%, transparent 56%),
    conic-gradient(from 0deg, #f44, #fd0, #4d4, #0df, #44f, #d0f, #f44);
}
.theme-swatch-custom input[type="color"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  opacity: 0;
  cursor: pointer;
}

/* ------------------------------------------------------------------ page */

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 12px calc(32px + env(safe-area-inset-bottom));
}

.status {
  min-height: 0;
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--text-dim);
}
.status:not(:empty) {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
}
.status.warn {
  color: var(--warn);
  border-color: color-mix(in srgb, var(--warn) 40%, var(--border));
}

/* -------------------------------------------------------------- category */

.cat-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 12px;
  margin: 0 0 4px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.cat-chip {
  flex: none;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.cat-chip:hover { background: var(--surface-2); }
.cat-chip[aria-selected="true"] {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

/* ------------------------------------------------------------ converter */

.converter {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.field {
  display: grid;
  gap: 6px;
}

.field-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.field input,
.field select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
}

.field input {
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.swap-row {
  display: flex;
  justify-content: center;
}

.result {
  margin-top: 4px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.result-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.result-value {
  margin-top: 4px;
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
  line-height: 1.2;
}

.result-hint {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-dim);
  min-height: 1.2em;
}

/* ---------------------------------------------------------------- footer */

.footer {
  margin: 28px 0 0;
  padding: 14px 4px calc(8px + env(safe-area-inset-bottom));
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

.footer p { margin: 0; }

.footer a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer a:hover { color: var(--accent); }

.footer .heart,
.footer .flag {
  display: inline;
  font-style: normal;
}

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  font-weight: 600;
  font-size: 14px;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.wide { width: 100%; }

.buttonrow { display: flex; flex-wrap: wrap; gap: 8px; }
.mt12 { margin-top: 12px; }
.nomargin { margin: 0; }
.muted { font-weight: 400; }

/* ------------------------------------------------------------------ toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 60;
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: var(--shadow);
}

@media (prefers-reduced-motion: no-preference) {
  .toast { animation: rise .18s ease-out; }
  @keyframes rise { from { opacity: 0; transform: translate(-50%, 8px); } }
}