/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--bg-app);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  transition: background 0.25s, color 0.25s;
}
button, input, select, textarea { font: inherit; }
img { max-width: 100%; display: block; }

/* ── Design tokens ─────────────────────────────────── */
:root {
  --bg-app:       #f8f7f4;
  --bg-surface:   #faf9f6;
  --bg-control:   #ffffff;
  --bg-hover:     #f0ede8;
  --bg-active:    #e8e4de;
  --border:       #e2dfd8;
  --border-ctrl:  #dedad2;
  --text-primary: #1a1916;
  --text-muted:   #a09d97;
  --text-faint:   #c0bdb6;
  --text-sub:     #9a9790;
  --text-meta:    #5a5854;
  --canvas-bg:    #eae8e3;
}

[data-theme="dark"] {
  --bg-app:       #111110;
  --bg-surface:   #161614;
  --bg-control:   #1e1d1b;
  --bg-hover:     #252420;
  --bg-active:    #2e2c28;
  --border:       #2a2926;
  --border-ctrl:  #2e2c28;
  --text-primary: #e8e6e1;
  --text-muted:   #6a6864;
  --text-faint:   #3e3d3a;
  --text-sub:     #7a7874;
  --text-meta:    #a09d97;
  --canvas-bg:    #0d0d0c;
}

/* ── App shell ─────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: 48px 1fr;
  height: 100vh;
  overflow: hidden;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    height: auto;
    min-height: 100vh;
    overflow-y: auto;
  }
}

/* ── Header ────────────────────────────────────────── */
.header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  transition: background 0.25s, border-color 0.25s, opacity 0.3s, transform 0.3s;
  z-index: 10;
}

@media (max-width: 900px) {
  .header {
    padding: 0.75rem 1rem;
    height: auto;
    grid-row: 1;
  }
  .header__sub, .header__dot { display: none; }
  .header__version { display: none; }
  #btn-kbd-hint { display: none; }
}

.header__left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.header__right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__title {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.header__dot { color: var(--text-faint); font-size: 0.7rem; }

.header__sub {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--text-sub);
  letter-spacing: 0.01em;
}

.header__version {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  text-transform: uppercase;
}

/* ── Icon buttons (header) ─────────────────────────── */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border-ctrl);
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  border-radius: 0;
  padding: 0;
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.icon-btn:active { background: var(--bg-active); }

/* ── Sidebar ───────────────────────────────────────── */
.sidebar {
  grid-column: 1;
  padding: 1.25rem 1.25rem;
  border-right: 1px solid var(--border);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  overflow-y: auto;
  transition: background 0.25s, border-color 0.25s, opacity 0.3s, transform 0.3s;
  position: relative;
}

@media (max-width: 900px) {
  .sidebar {
    grid-column: 1;
    grid-row: 3;
    border-right: none;
    border-top: 1px solid var(--border);
    padding: 1.5rem 1rem;
    gap: 1.5rem;
    overflow-y: visible;
  }
}

/* ── Zen mode ──────────────────────────────────────── */
.app--zen .header,
.app--zen .sidebar {
  opacity: 0;
  pointer-events: none;
}

.app--zen .header {
  transform: translateY(-100%);
  z-index: 70;
}

.app--zen .sidebar {
  grid-row: 1 / -1;
  grid-column: 1;
  width: 280px;
  z-index: 60;
  transform: translateX(-100%);
}

.app--zen .canvas-area {
  grid-row: 1 / -1;
  grid-column: 1 / -1;
}

/* Force visible briefly after entering Zen mode */
.sidebar.sidebar--force-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

/* ── Zen mode: Hover Sensor ─────────────────────────── */
.zen-sensor {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 25px;
  z-index: 55;
  display: none;
}
.app--zen .zen-sensor { display: block; }

/* In zen mode, reveal sidebar when hovering sensor OR sidebar itself */
.zen-sensor:hover ~ .sidebar,
.sidebar:hover,
.app--zen .sidebar.sidebar--force-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

/* ── Labels ────────────────────────────────────────── */
.label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

@media (max-width: 900px) {
  .label { font-size: 0.75rem; }
}

/* ── Control groups ────────────────────────────────── */
.control-group { display: flex; flex-direction: column; }

/* ── Vibe filter ───────────────────────────────────── */
.vibe-filter {
  display: flex;
  gap: 0;
  border: 1px solid var(--border-ctrl);
}

.vf-btn {
  flex: 1;
  padding: 0.45rem 0.1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border-radius: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.vf-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

.vf-btn--active {
  background: var(--text-primary);
  color: var(--bg-app);
}
.vf-btn--active:hover { background: var(--text-primary); }

/* ── Custom Dropdowns ──────────────────────────────── */
.dropdown {
  position: relative;
  width: 100%;
}

.dropdown__trigger {
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.7rem;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 400;
  cursor: pointer;
  transition: border-color 0.15s;
  border-radius: 0;
  text-align: left;
  position: relative;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='5' viewBox='0 0 10 5'%3E%3Cpath d='M0 0l5 5 5-5z' fill='%23a09d97'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
}

@media (max-width: 900px) {
  .dropdown__trigger {
    font-size: 0.95rem;
    padding: 0.75rem 2.5rem 0.75rem 0.85rem;
  }
  .dropdown__option {
    font-size: 0.95rem;
    padding: 0.85rem;
  }
}

.dropdown__trigger:hover { border-color: var(--text-meta); }
.dropdown__trigger:focus { outline: none; border-color: var(--text-primary); }

.dropdown__trigger--open {
  border-color: var(--text-primary);
}

.dropdown__trigger--open::after {
  transform: rotate(180deg);
}

.dropdown__menu {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  background: var(--bg-control);
  border: 1px solid var(--border-ctrl);
  z-index: 100;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.2s ease, opacity 0.15s ease;
  pointer-events: none;
}

.dropdown__menu--open {
  max-height: 300px;
  opacity: 1;
  pointer-events: auto;
  overflow-y: auto;
}

.dropdown__option {
  padding: 0.5rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.1s, color 0.1s;
  user-select: none;
}

.dropdown__option:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.dropdown__option--selected {
  background: var(--bg-active);
  font-weight: 500;
}

/* ── Selects (deprecated - replaced by custom dropdowns) ──────────────────────────────── */
.select {
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.7rem;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 400;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='5' viewBox='0 0 10 5'%3E%3Cpath d='M0 0l5 5 5-5z' fill='%23a09d97'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  cursor: pointer;
  transition: border-color 0.15s;
  border-radius: 0;
}
.select:hover  { border-color: var(--text-meta); }
.select:focus  { outline: none; border-color: var(--text-primary); }

/* ── Textarea & Input ──────────────────────────────── */
.textarea {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 300;
  line-height: 1.5;
  resize: none;
  border-radius: 0;
  transition: border-color 0.15s;
}

@media (max-width: 900px) {
  .textarea {
    font-size: 0.9rem;
    padding: 0.75rem;
  }
}
.textarea:focus  { outline: none; border-color: var(--text-primary); }
.textarea::placeholder { color: var(--text-faint); }

.input {
  width: 100%;
  margin-top: 0.4rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 400;
  border-radius: 0;
  transition: border-color 0.15s;
}

@media (max-width: 900px) {
  .input {
    font-size: 0.9rem;
    padding: 0.75rem;
  }
}
.input:focus { outline: none; border-color: var(--text-primary); }
.input::placeholder { color: var(--text-faint); }

/* ── Tabs ─────────────────────────────────────────── */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-ctrl);
  margin-bottom: 0.65rem;
}

.tab {
  flex: 1;
  padding: 0.45rem 0.75rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.tab:hover { color: var(--text-primary); }

.tab--active {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

.tab-content { display: none; }
.tab-content--active { display: block; }

/* ── Language toggle ────────────────────────────────── */
.lang-toggle {
  display: flex;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  border-radius: 0;
}

.lang-btn {
  flex: 1;
  padding: 0.45rem 0.6rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang-btn:hover { background: var(--bg-hover); }

.lang-btn--active {
  background: var(--text-primary);
  color: var(--bg-app);
}

/* ── Buttons ───────────────────────────────────────── */
.btn {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-ctrl);
  background: transparent;
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s, border-color 0.15s;
  border-radius: 0;
}

@media (max-width: 900px) {
  .btn {
    font-size: 0.95rem;
    padding: 0.85rem 1rem;
  }
}
.btn:hover  { background: var(--bg-hover); }
.btn:active { background: var(--bg-active); }

.btn--primary {
  background: var(--text-primary);
  color: var(--bg-app);
  border-color: var(--text-primary);
}
.btn--primary:hover  { opacity: 0.85; }
.btn--primary:active { opacity: 0.7; }

/* ── Divider ───────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
}

/* ── Meta rows ─────────────────────────────────────── */
.meta { display: flex; flex-direction: column; gap: 0.65rem; }
.meta__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.meta__row .label { margin-bottom: 0; }

.meta__value {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-meta);
  text-transform: capitalize;
}

/* ── Vibe pill ─────────────────────────────────────── */
.vibe-pill {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border: 1px solid transparent;
  transition: all 0.25s;
}
.vibe-pill[data-vibe="calm"]    { color: #5c7a6e; border-color: #c2d4ce; background: #f0f6f3; }
.vibe-pill[data-vibe="chaotic"] { color: #a0422d; border-color: #e8c4b8; background: #fdf4f1; }
.vibe-pill[data-vibe="serious"] { color: #3d3d3d; border-color: #c8c8c8; background: #f5f5f5; }

[data-theme="dark"] .vibe-pill[data-vibe="calm"]    { color: #7abfae; border-color: #2a4a42; background: #121e1b; }
[data-theme="dark"] .vibe-pill[data-vibe="chaotic"] { color: #d4836a; border-color: #4a2018; background: #1e120e; }
[data-theme="dark"] .vibe-pill[data-vibe="serious"] { color: #9a9896; border-color: #2e2c28; background: #1a1916; }

/* ── Quote card ────────────────────────────────────── */
.quote-card {
  position: relative;
  border: 1px solid var(--border);
  background: var(--bg-control);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  user-select: none;
}
.quote-card:hover { border-color: var(--text-primary); }

.quote-card__text {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--text-primary);
  font-style: italic;
  line-height: 1.55;
}

.quote-card__author {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* Copy hint overlay */
.quote-card__copy-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: var(--bg-hover);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.quote-card--copied .quote-card__copy-hint { opacity: 1; }

/* ── Keyboard shortcut panel ───────────────────────── */
.kbd-panel {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.45);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.kbd-panel--open {
  opacity: 1;
  pointer-events: auto;
}

.kbd-panel__inner {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 1.5rem;
  min-width: 240px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.kbd-panel__title {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.kbd-panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.kbd-panel__row span {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--text-primary);
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border-ctrl);
  background: var(--bg-control);
  color: var(--text-primary);
  font-size: 0.7rem;
  font-weight: 500;
  font-family: inherit;
  letter-spacing: 0.04em;
}

/* ── Sidebar footer ────────────────────────────────── */
.sidebar__footer {
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
  margin-top: auto;
  padding-bottom: 1.5rem; /* space for ? button */
}

/* ── Btn group ─────────────────────────────────────── */
.btn-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* ── Canvas area ───────────────────────────────────── */
.canvas-area {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--canvas-bg);
  padding: 2rem;
  overflow: hidden;
  transition: background 0.25s, grid-column 0.3s;
}

@media (max-width: 900px) {
  .canvas-area {
    grid-column: 1;
    grid-row: 2;
    padding: 1.5rem 1rem;
    min-height: 400px;
    height: 65vh;
  }
}

#canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#canvas {
  display: block;
  box-shadow:
    0 2px 8px rgba(0,0,0,0.12),
    0 8px 32px rgba(0,0,0,0.10),
    0 0 0 1px rgba(0,0,0,0.05);
  transition: box-shadow 0.2s;
}

[data-theme="dark"] #canvas {
  box-shadow:
    0 2px 8px rgba(0,0,0,0.4),
    0 8px 32px rgba(0,0,0,0.35),
    0 0 0 1px rgba(0,0,0,0.3);
}

/* ── Zen mode exit hint ─────────────────────────────── */
.zen-hint {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  text-transform: uppercase;
}
.app--zen .zen-hint { opacity: 1; }