/* ── Design tokens ─────────────────────────────────────────────────────── */
:root {
  --bg:         #ffffff;
  --surface:    #f4f4f7;
  --border:     #e2e2ea;
  --text:       #18181b;
  --muted:      #71717a;
  --accent:     #7c3aed;
  --accent-dim: #ede9fe;
  --accent-fg:  #ffffff;
  --danger:     #dc2626;
  --success:    #16a34a;
  --r:          14px;
  --r-sm:       8px;
  --safe-t:     env(safe-area-inset-top, 0px);
  --safe-b:     env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:         #0f0f13;
    --surface:    #17171f;
    --border:     #2a2a38;
    --text:       #f0f0f8;
    --muted:      #8b8ba0;
    --accent:     #a78bfa;
    --accent-dim: #2d1f5e;
    --accent-fg:  #0f0f13;
    --danger:     #f87171;
    --success:    #4ade80;
  }
}

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

html { height: 100%; }

body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ────────────────────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 480px;
  margin: 0 auto;
}

/* ── Header ────────────────────────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(14px + var(--safe-t)) 20px 14px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.settings-btn {
  width: 40px;
  height: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.05rem;
  color: var(--muted);
  transition: background 0.15s, color 0.15s;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.settings-btn:active { background: var(--border); }

/* Red dot when credentials missing */
.settings-btn.needs-setup::after {
  content: '';
  position: absolute;
  top: -3px;
  right: -3px;
  width: 10px;
  height: 10px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid var(--bg);
}

/* ── Main content ──────────────────────────────────────────────────────── */
main {
  flex: 1;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* ── Emoji picker ──────────────────────────────────────────────────────── */
.emoji-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.emoji-display {
  width: 92px;
  height: 92px;
  border-radius: 26px;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.25rem;
  cursor: pointer;
  user-select: none;
  transition: transform 0.12s, border-color 0.15s, background 0.15s;
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.emoji-display:active  { transform: scale(0.94); }
.emoji-display:hover   { border-color: var(--accent); background: var(--accent-dim); }

/* Visible emoji text input — slides in when picking */
.emoji-picker-input {
  width: 200px;
  text-align: center;
  font-size: 1.5rem;
  /* collapse when hidden */
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  border-color: transparent;
  transition: max-height 0.2s ease, padding 0.18s ease,
              opacity 0.15s ease, border-color 0.15s ease;
}

.emoji-section.picking .emoji-picker-input {
  max-height: 60px;
  padding-top: 9px;
  padding-bottom: 9px;
  opacity: 1;
  pointer-events: all;
  border-color: var(--accent);
}

.emoji-hint {
  font-size: 0.8rem;
  color: var(--muted);
  transition: opacity 0.15s;
}

/* ── Form fields ───────────────────────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

textarea,
input[type="url"],
input[type="text"],
input[type="password"] {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  padding: 13px 15px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
  -webkit-appearance: none;
}

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

textarea {
  resize: none;
  min-height: 116px;
  line-height: 1.6;
}

textarea::placeholder,
input::placeholder { color: var(--muted); }

.char-count {
  font-size: 0.78rem;
  color: var(--muted);
  text-align: right;
  transition: color 0.15s;
}

.char-count.warn { color: var(--danger); }

/* ── Post button ───────────────────────────────────────────────────────── */
.post-btn {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: var(--r);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 16px;
  width: 100%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: opacity 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.post-btn:active:not(:disabled) { transform: scale(0.98); }
.post-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  display: none;
  flex-shrink: 0;
}

.post-btn.loading .spinner   { display: block; }
.post-btn.loading .btn-label { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ─────────────────────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: calc(24px + var(--safe-b));
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--text);
  color: var(--bg);
  padding: 11px 22px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  max-width: calc(100% - 40px);
  text-align: center;
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.22);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 200;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#toast.show    { transform: translateX(-50%) translateY(0); }
#toast.success { background: var(--success); color: #fff; }
#toast.error   { background: var(--danger);  color: #fff; }

/* ── Settings modal ────────────────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.48);
  z-index: 50;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg);
  border-radius: 22px 22px 0 0;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding-bottom: calc(20px + var(--safe-b));
  transform: translateY(100%);
  transition: transform 0.32s cubic-bezier(0.32, 0.72, 0, 1);
  max-height: 92vh;
  overflow-y: auto;
}

.overlay.open .modal { transform: translateY(0); }

.modal-grip {
  width: 40px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 10px auto 0;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 0;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.close-btn {
  width: 32px;
  height: 32px;
  background: var(--surface);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--muted);
  -webkit-tap-highlight-color: transparent;
}

.close-btn:active { background: var(--border); }

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Privacy notice */
.privacy-notice {
  background: var(--accent-dim);
  border: 1.5px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: var(--r);
  padding: 14px 16px;
  display: flex;
  gap: 11px;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.6;
}

.privacy-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; }

/* API key with eye toggle */
.input-wrap {
  position: relative;
  display: flex;
}

.input-wrap input { padding-right: 48px; }

.eye-btn {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  padding: 4px;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
}

.save-btn {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: var(--r);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px;
  width: 100%;
  cursor: pointer;
  transition: opacity 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.save-btn:active { opacity: 0.8; }

/* ── Tablet / desktop ──────────────────────────────────────────────────── */
@media (min-width: 520px) {
  .overlay { align-items: center; }

  .modal {
    border-radius: 22px;
    margin: 20px;
    width: calc(100% - 40px);
    max-height: 80vh;
    transform: scale(0.96) translateY(10px);
    opacity: 0;
    transition: transform 0.25s cubic-bezier(0.34, 1.2, 0.64, 1), opacity 0.2s;
  }

  .overlay.open .modal {
    transform: scale(1) translateY(0);
    opacity: 1;
  }

  .modal-grip { display: none; }
}