/* =============================================
   DESIGN TOKENS & LAYOUT
   ============================================= */
/* =============================================
   DESIGN TOKENS & LAYOUT
   ============================================= */
:root {
  /* Dark Mode (Default) */
  --bg: #0d1117; --bg-1: #161b22; --bg-2: #21262d; --bg-3: #2d333b;
  --border: #30363d; --border-hi: #444c56;
  --fg: #e6edf3; --fg-2: #adbac7; --fg-3: #768390;
  --accent: #e8716a; --accent-dim: rgba(232,113,106,0.15); --accent-hover: #f08078;
  --green: #3fb950; --green-dim: rgba(63,185,80,0.15);
  --yellow: #d29922; --yellow-dim: rgba(210,153,34,0.15);
  --blue: #388bfd; --blue-dim: rgba(56,139,253,0.15);
  --red: #f85149; --red-dim: rgba(248,81,73,0.15);
  --font: "TX-02", "Instrument Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Fira Code", monospace;
  --radius: 6px; --radius-lg: 10px;
  --shadow: 0 8px 24px rgba(0,0,0,0.4);
  --transition: 0.15s ease;
  --focus-ring: 0 0 0 3px var(--accent-dim);
  --card-gradient: linear-gradient(
  180deg, 
  rgba(255, 255, 255, 0.03) 0%, 
  rgba(255, 255, 255, 0) 100%
);
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg: #ffffff; 
  --bg-1: #f6f8fa; 
  --bg-2: #eaeef2; 
  --bg-3: #d0d7de;
  --border: #d0d7de; 
  --border-hi: #afb8c1;
  --fg: #24292f; 
  --fg-2: #57606a; 
  --fg-3: #8c959f;
  --shadow: 0 8px 24px rgba(140, 149, 159, 0.2);
}

::selection {
  background: var(--accent-dim);
  color: var(--accent);
}


/* Apply to a card component */
.card {
  background: var(--bg-1);
  background-image: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

button:focus-visible, input:focus {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--accent);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; width: 100%; font-family: var(--font); background: var(--bg); color: var(--fg); overflow: hidden; font-size: 14px; line-height: 1.5; }

/* Shell — 60/40 config/preview split */
#app { display: grid; grid-template-rows: 52px 1fr; grid-template-columns: 45fr 55fr; height: 100vh; overflow: hidden; }
 
/* Topbar */
#topbar { grid-column: 1 / -1; display: flex; align-items: center; padding: 0 20px; border-bottom: 1px solid var(--border); background: var(--bg-1); gap: 16px; z-index: 10; height: 52px; }
.topbar-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 14px; letter-spacing: 0.06em; color: var(--fg); text-transform: uppercase; flex-shrink: 0; }
.topbar-logo { width: 26px; height: 26px; background: var(--accent); border-radius: 6px; display: flex; align-items: center; justify-content: center; }
.topbar-logo svg { width: 15px; height: 15px; }
/* Back arrow for index navigation — hidden on builder by default, shown when .has-back is on #topbar */
.topbar-back { display: none; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: var(--radius); background: transparent; border: 1px solid var(--border); color: var(--fg-3); cursor: pointer; transition: all var(--transition); flex-shrink: 0; text-decoration: none; }
.topbar-back:hover { color: var(--fg); border-color: var(--border-hi); background: var(--bg-2); }
#topbar.has-back .topbar-back { display: flex; }
.topbar-sep { width: 1px; height: 20px; background: var(--border); flex-shrink: 0; }
.topbar-tabs { display: flex; gap: 2px; flex: 1; }
.tab-btn { padding: 5px 13px; border: none; background: transparent; color: var(--fg-3); font-family: var(--font); font-size: 12px; font-weight: 500; border-radius: var(--radius); cursor: pointer; transition: color var(--transition), background var(--transition); letter-spacing: 0.02em; }
.tab-btn:hover { color: var(--fg-2); background: var(--bg-2); }
.tab-btn.active { color: var(--fg); background: var(--bg-3); }
 
/* Topbar action group — unified ghost style */
.topbar-actions { display: flex; gap: 6px; margin-left: auto; align-items: center; }
 
/* Status pill */
.save-status { font-size: 10px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--fg-3); padding: 3px 8px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 20px; }
 
/* Ghost action buttons — used for Import, Save, Reset, JSON */
.btn-ghost { display: inline-flex; align-items: center; gap: 5px; padding: 5px 11px; border: 1px solid var(--border); border-radius: var(--radius); background: transparent; color: var(--fg-3); font-family: var(--font); font-size: 11px; font-weight: 500; cursor: pointer; transition: all var(--transition); white-space: nowrap; letter-spacing: 0.02em; }
.btn-ghost:hover { color: var(--fg); border-color: var(--border-hi); background: var(--bg-2); }
.btn-ghost svg { width: 12px; height: 12px; flex-shrink: 0; }
/* Danger ghost — Reset */
.btn-ghost-danger { border-color: transparent; color: var(--fg-3); }
.btn-ghost-danger:hover { color: #f85149; border-color: rgba(248,81,73,0.4); background: rgba(248,81,73,0.08); }
 
/* Topbar separator between action groups */
.topbar-actions-sep { width: 1px; height: 16px; background: var(--border); margin: 0 2px; }

/* .btn — used in config panels (add question, add window, etc.) NOT in topbar */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 6px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-2); color: var(--fg-2); font-family: var(--font); font-size: 12px; font-weight: 500; cursor: pointer; transition: all var(--transition); letter-spacing: 0.02em; white-space: nowrap; }
.btn:hover { border-color: var(--border-hi); color: var(--fg); background: var(--bg-3); }
.btn.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn svg { width: 13px; height: 13px; }
 
/* Export — prominent filled button, only one in topbar */
.btn-export { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border: none; border-radius: var(--radius); background: var(--accent); color: #fff; font-family: var(--font); font-size: 11px; font-weight: 600; cursor: pointer; transition: background var(--transition); letter-spacing: 0.03em; white-space: nowrap; }
.btn-export:hover { background: var(--accent-hover); }
.btn-export svg { width: 12px; height: 12px; }

#config-panel { border-right: 1px solid var(--border); overflow-y: auto; overflow-x: hidden; background: var(--bg-1); }
.config-section { display: none; flex-direction: column; padding: 20px; gap: 16px; }
.config-section.active { display: flex; }
.section-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-3); }
.field-group { display: flex; flex-direction: column; gap: 6px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field-label { font-size: 12px; font-weight: 500; color: var(--fg-2); }
.field-hint { font-size: 11px; color: var(--fg-3); line-height: 1.5; }
input[type="text"], input[type="time"], input[type="number"], select, textarea { width: 100%; padding: 7px 10px; background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); color: var(--fg); font-family: var(--font); font-size: 13px; outline: none; transition: border-color var(--transition); -webkit-appearance: none; }
input[type="color"] { width: 100%; padding: 3px 4px; height: 34px; background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 60px; }
.color-row { display: flex; align-items: center; gap: 10px; }
.color-preview { width: 34px; height: 34px; border-radius: var(--radius); border: 1px solid var(--border); flex-shrink: 0; }
.divider { height: 1px; background: var(--border); }
.seg-ctrl { display: flex; background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 3px; gap: 3px; }
.seg-btn { flex: 1; padding: 5px 8px; border: none; border-radius: 4px; background: transparent; color: var(--fg-3); font-family: var(--font); font-size: 11px; font-weight: 600; cursor: pointer; transition: all var(--transition); letter-spacing: 0.02em; }
.seg-btn.active { background: var(--bg-3); color: var(--fg); }
.dow-grid { display: flex; gap: 6px; flex-wrap: wrap; }
.dow-chip { width: 36px; height: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-2); color: var(--fg-3); font-size: 11px; font-weight: 600; cursor: pointer; transition: all var(--transition); display: flex; align-items: center; justify-content: center; }
.dow-chip.on { border-color: var(--accent); background: var(--accent-dim); color: var(--accent); }
.window-list { display: flex; flex-direction: column; gap: 8px; }
.window-row { display: grid; grid-template-columns: 90px 1fr 10px 1fr 28px; gap: 6px; align-items: center; }
.window-sep { font-size: 11px; color: var(--fg-3); text-align: center; }
.window-del { width: 24px; height: 24px; border: 1px solid var(--border); border-radius: var(--radius); background: transparent; color: var(--fg-3); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 15px; line-height: 1; transition: all var(--transition); }
.window-del:hover { border-color: #f85149; color: #f85149; background: rgba(248,81,73,0.1); }
.add-row { display: flex; gap: 8px; padding-top: 2px; flex-wrap: wrap; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.toggle-label { font-size: 12px; color: var(--fg-2); }
.toggle { position: relative; width: 34px; height: 18px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track { position: absolute; inset: 0; background: var(--bg-3); border: 1px solid var(--border); border-radius: 9px; cursor: pointer; transition: background var(--transition), border-color var(--transition); }
.toggle input:checked + .toggle-track { background: var(--accent); border-color: var(--accent); }
.toggle-track::after { content: ''; position: absolute; top: 2px; left: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--fg-3); transition: transform var(--transition), background var(--transition); }
.toggle input:checked + .toggle-track::after { transform: translateX(16px); background: #fff; }
.task-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.task-card.enabled { border-color: var(--accent); }
.task-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.task-name { font-size: 13px; font-weight: 600; color: var(--fg); }
.task-desc { font-size: 11px; color: var(--fg-3); line-height: 1.5; margin-top: 3px; }
.task-settings { display: flex; flex-direction: column; gap: 10px; padding-top: 6px; border-top: 1px solid var(--border); }
.task-settings.hidden { display: none; }

/* Questions */
.question-list { display: flex; flex-direction: column; gap: 8px; }
.q-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: border-color var(--transition); }
.q-card:hover { border-color: var(--border-hi); }
.q-card.expanded { border-color: var(--accent); }
.q-header { display: flex; align-items: center; gap: 10px; padding: 10px 12px; cursor: pointer; user-select: none; }
.q-drag-handle { color: var(--fg-3); font-size: 14px; cursor: grab; flex-shrink: 0; }
.q-num { font-size: 11px; font-weight: 700; color: var(--fg-3); min-width: 18px; }
.q-preview-text { flex: 1; font-size: 12px; color: var(--fg-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.q-type-badge { font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.04em; flex-shrink: 0; background: var(--bg-3); color: var(--fg-2); }
.q-type-badge.slider { background: rgba(56,139,253,0.15); color: var(--blue); }
.q-type-badge.choice { background: rgba(63,185,80,0.15); color: var(--green); }
.q-chevron { color: var(--fg-3); transition: transform var(--transition); flex-shrink: 0; }
.q-card.expanded .q-chevron { transform: rotate(180deg); }
.q-body { display: none; padding: 0 12px 12px; flex-direction: column; gap: 10px; border-top: 1px solid var(--border); }
.q-card.expanded .q-body { display: flex; }
.q-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.q-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.q-condition-block { background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.condition-row { display: grid; grid-template-columns: 1fr 100px 80px; gap: 6px; }
.q-del-btn { display: flex; align-items: center; gap: 5px; padding: 5px 10px; background: transparent; border: 1px solid transparent; border-radius: var(--radius); color: var(--fg-3); font-family: var(--font); font-size: 11px; cursor: pointer; transition: all var(--transition); align-self: flex-end; margin-top: 4px; }
.q-del-btn:hover { border-color: #f85149; color: #f85149; background: rgba(248,81,73,0.1); }
.options-list { display: flex; flex-direction: column; gap: 6px; }
.option-row { display: flex; gap: 6px; align-items: center; }
.option-row input { flex: 1; }
.option-del { width: 24px; height: 24px; flex-shrink: 0; border: 1px solid var(--border); border-radius: var(--radius); background: transparent; color: var(--fg-3); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 15px; line-height: 1; transition: all var(--transition); }
.option-del:hover { border-color: #f85149; color: #f85149; background: rgba(248,81,73,0.1); }

/* Page Break Specifics */
.q-card.page-break { border-color: var(--border-hi); border-style: dashed; background: transparent; }
.q-card.page-break .q-header { justify-content: center; padding: 8px 12px; background: rgba(255,255,255,0.02); }
.q-card.page-break .q-del-btn { margin: 0; padding: 2px 6px; border: 1px solid var(--border); }

/* Preview Panel (Sleek Rectangle) */
#preview-panel { display: flex; flex-direction: column; background: var(--bg); overflow: hidden; border-left: 1px solid var(--border); }
#preview-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; border-bottom: 1px solid var(--border); background: var(--bg-1); flex-shrink: 0; }
.preview-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; color: var(--fg-3); }
.preview-session-tabs { display: flex; gap: 4px; }
.preview-session-tab { padding: 3px 10px; border: 1px solid var(--border); border-radius: 4px; background: transparent; color: var(--fg-3); font-family: var(--font); font-size: 11px; font-weight: 500; cursor: pointer; transition: all var(--transition); }
.preview-session-tab:hover { color: var(--fg-2); border-color: var(--border-hi); }
.preview-session-tab.active { background: var(--bg-3); border-color: var(--border-hi); color: var(--fg); }
.preview-reset-btn { padding: 3px 10px; border: 1px solid var(--border); border-radius: 4px; background: transparent; color: var(--fg-3); font-family: var(--font); font-size: 11px; cursor: pointer; transition: all var(--transition); }
.preview-reset-btn:hover { color: var(--fg-2); border-color: var(--border-hi); }

#preview-viewport { flex: 1; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 20px; background: var(--bg); }
.phone-shell { width: 360px; height: min(720px, calc(100vh - 120px)); border: 1px solid var(--border-hi); border-radius: 12px; overflow: hidden; background: #000; position: relative; flex-shrink: 0; }
#preview-iframe { width: 100%; height: 100%; border: none; }

/* Modals */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: none; align-items: center; justify-content: center; z-index: 100; backdrop-filter: blur(4px); }
.modal-overlay.open { display: flex; }
.modal-box { background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; width: 480px; max-width: calc(100vw - 40px); display: flex; flex-direction: column; gap: 16px; box-shadow: var(--shadow); }
.modal-title { font-size: 15px; font-weight: 700; color: var(--fg); }
.modal-subtitle { font-size: 12px; color: var(--fg-3); }
.modal-close { background: transparent; border: none; color: var(--fg-3); cursor: pointer; font-size: 18px; line-height: 1; transition: color var(--transition); padding: 0; }
.modal-close:hover { color: var(--fg); }
.export-option { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; cursor: pointer; transition: all var(--transition); }
.export-option:hover { border-color: var(--accent); background: var(--bg-3); }
.export-option-title { font-size: 13px; font-weight: 600; color: var(--fg); margin-bottom: 4px; }
.export-option-desc { font-size: 11px; color: var(--fg-3); line-height: 1.5; }

/* Phase sequencer pills in Schedule tab window cards */
.phase-pill {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
}
/* Session checkbox rows in question cards */
.q-session-checks { display: flex; flex-direction: column; gap: 5px; margin-top: 4px; }
.session-check-row { display: flex; align-items: center; gap: 7px; cursor: pointer; font-size: 0.85rem; color: var(--fg-2); user-select: none; }
.session-check-row input[type="checkbox"] { accent-color: var(--accent); width: 14px; height: 14px; flex-shrink: 0; cursor: pointer; }
.session-check-row:hover span { color: var(--fg); }

.phase-pill-pre  { background: rgba(99, 179, 237, 0.15); color: #63b3ed; border: 1px solid rgba(99, 179, 237, 0.3); }
.phase-pill-task { background: rgba(232, 113, 106, 0.15); color: var(--accent); border: 1px solid rgba(232, 113, 106, 0.3); }
.phase-pill-post { background: rgba(154, 215, 160, 0.15); color: #9ad7a0; border: 1px solid rgba(154, 215, 160, 0.3); }

/* Misc */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hi); }
.badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 4px; font-size: 10px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.badge-muted { background: var(--bg-3); color: var(--fg-3); }
.badge-blue { background: rgba(56,139,253,0.15); color: var(--blue); }

/* --- Mobile Blocker --- */
#mobile-blocker {
  display: none; /* Hidden by default on desktop */
  position: fixed;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background: var(--bg);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
}

#mobile-blocker .blocker-content {
  background: var(--bg-elevated);
  padding: 40px 30px;
  border-radius: 12px;
  border: 1px solid var(--border);
  max-width: 400px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

#mobile-blocker h2 {
  margin-bottom: 10px;
  color: var(--fg);
}

#mobile-blocker p {
  color: var(--fg-muted);
  line-height: 1.5;
  font-size: 0.95rem;
}

/* Trigger the blocker on screens smaller than a typical tablet landscape */
@media (max-width: 850px) {
  #mobile-blocker {
    display: flex;
  }
  /* Optionally hide the main app content so it doesn't try to render behind the blocker */
  .app-container {
    display: none !important; 
  }
}

@media (max-width: 900px) { #app { grid-template-columns: 1fr; grid-template-rows: 52px 1fr 0; } #preview-panel { display: none; } }