/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #1a1a1e;
  --surface:   #2c2c2e;
  --border:    #3a3a3c;
  --accent:    #0a84ff;
  --danger:    #ff453a;
  --text:      #f2f2f7;
  --text-muted:#8e8e93;
  --panel-w:   340px;
  --radius:    10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

/* ── Layout ── */
#app {
  display: flex;
  height: 100vh;
}

/* ── Left panel ── */
#panel {
  width: var(--panel-w);
  min-width: var(--panel-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  padding: 20px 16px 24px;
}

#panel h1 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 18px;
  color: var(--text);
}

/* ── Control groups ── */
.control-group {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group:last-child { border-bottom: none; }

.control-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.control-group .hint {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.control-group .hint code {
  background: var(--border);
  padding: 1px 4px;
  border-radius: 4px;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 11px;
}

/* ── Inputs ── */
input[type="text"],
input[type="color"],
textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  padding: 8px 10px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}

input[type="text"]:focus,
textarea:focus {
  border-color: var(--accent);
}

input[type="color"] {
  padding: 2px 4px;
  height: 34px;
  cursor: pointer;
}

textarea {
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 13px;
  resize: vertical;
  line-height: 1.6;
}

input[type="file"] {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Toggle row ── */
.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px !important;
  font-weight: 400 !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  color: var(--text) !important;
}

.toggle-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Sub-options ── */
.sub-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 8px;
  border-left: 2px solid var(--border);
}

.sub-options label {
  font-size: 12px !important;
  margin-top: 4px;
}

/* ── Buttons ── */
.actions {
  flex-direction: row !important;
  flex-wrap: wrap;
  gap: 8px !important;
  border-bottom: none !important;
}

button {
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 16px;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}

button:active { transform: scale(0.97); }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary   { background: var(--accent); color: #fff; flex: 1; }
.btn-secondary { background: var(--border); color: var(--text); flex: 1; }
.btn-danger    { background: var(--danger); color: #fff; flex: 1; }

/* ── Export status ── */
#exportStatus {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 8px;
}

#exportStatus progress {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  accent-color: var(--accent);
}

#exportLabel {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* ── Preview area ── */
#previewArea {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  overflow: hidden;
}

#canvasWrap {
  position: relative;
  /* sized dynamically by JS */
}

#mainCanvas {
  display: block;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

#placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

/* ── Range slider ── */
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Settings dropdown ── */
.settings-section { gap: 0 !important; padding: 0 !important; border-bottom: 1px solid var(--border) !important; }

.settings-toggle {
  width: 100%;
  background: none;
  border: none;
  border-radius: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transform: none;
}
.settings-toggle:active { opacity: 0.7; transform: none; }
.chevron { font-size: 11px; color: var(--text-muted); transition: transform 0.2s; }
.chevron.open { transform: rotate(180deg); }

.settings-body {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-bottom: 8px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 0 10px 10px;
  border-left: 2px solid var(--border);
  margin-bottom: 10px;
}
.setting-group:last-child { margin-bottom: 0; }

.setting-group-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.setting-row-label {
  font-size: 13px;
  color: var(--text);
  margin-top: 4px;
}

/* ── Script label row ── */
.script-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Emoji toggle button ── */
.emoji-toggle-btn {
  background: var(--border);
  border: none;
  border-radius: 8px;
  font-size: 16px;
  padding: 4px 8px;
  cursor: pointer;
  line-height: 1;
  transform: none;
}
.emoji-toggle-btn:active { opacity: 0.7; transform: none; }
.emoji-toggle-btn.active { background: var(--accent); }

/* ── Emoji picker ── */
.emoji-picker {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 6px;
}

.emoji-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.emoji-tabs::-webkit-scrollbar { display: none; }

.emoji-tab {
  flex: 1;
  min-width: 36px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 16px;
  padding: 6px 4px;
  cursor: pointer;
  transform: none;
  transition: border-color 0.15s;
}
.emoji-tab:active { transform: none; opacity: 0.7; }
.emoji-tab.active {
  border-bottom-color: var(--accent);
  color: var(--text);
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  padding: 6px;
  max-height: 150px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.emoji-btn {
  background: none;
  border: none;
  border-radius: 6px;
  font-size: 20px;
  line-height: 1;
  padding: 4px 2px;
  cursor: pointer;
  text-align: center;
  transform: none;
  transition: background 0.1s;
}
.emoji-btn:hover { background: var(--border); }
.emoji-btn:active { transform: scale(0.9); }

/* ── Background type tabs ── */
.bg-type-tabs {
  display: flex;
  gap: 6px;
}

.bg-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  /* override label styles from .control-group label */
  text-transform: none !important;
  letter-spacing: 0 !important;
}

.bg-tab input[type="radio"] {
  display: none;
}

.bg-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* number input (duration) */
input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  padding: 8px 10px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}

input[type="number"]:focus {
  border-color: var(--accent);
}

/* ── Select ── */
select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  padding: 8px 10px;
  width: 100%;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238e8e93'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

select:focus {
  border-color: var(--accent);
}

/* ── Script button group ── */
.script-btn-group {
  display: flex;
  gap: 4px;
}

/* ── Custom emoji picker ── */
.custom-emoji-picker {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  margin-bottom: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.custom-emoji-btn {
  background: var(--border);
  border: none;
  border-radius: 8px;
  padding: 5px;
  cursor: pointer;
  transform: none;
  transition: background 0.1s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  color: var(--text-muted);
}

.custom-emoji-btn img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 4px;
  display: block;
}

.custom-emoji-btn:hover { background: var(--accent); color: #fff; }
.custom-emoji-btn:active { transform: scale(0.92); }

/* ── Utility ── */
.hidden { display: none !important; }