/* DevEnglish — design tokens */
:root {
  /* Surfaces — warm cream */
  --surface: #faf7f1;          /* artboard bg, warm cream */
  --surface-2: #f3efe6;        /* recessed area */
  --card: #ffffff;
  --card-tint: #fbfaf6;

  /* Borders */
  --border: #ece7dc;
  --border-strong: #ddd5c4;

  /* Text */
  --ink: #2a2620;
  --ink-2: #5a544a;
  --ink-3: #8a8478;
  --ink-mute: #b3ad9f;

  /* Slate blue — primary, trustworthy */
  --blue: #6c84b3;
  --blue-deep: #4f6896;
  --blue-soft: #e9eef7;
  --blue-tint: #f4f7fc;

  /* Pastel green / mint — mastered & primary accent */
  --green: #8cba9a;
  --green-deep: #6ea481;
  --green-soft: #e6f1e8;
  --green-tint: #f1f8f3;

  /* Mint — fresher accent for v2 integrated */
  --mint: #9dd0bf;
  --mint-deep: #6fb5a0;
  --mint-soft: #e4f3ee;
  --mint-tint: #f0f8f5;

  /* Warm peach — unfamiliar/warning */
  --peach: #d4a079;
  --peach-deep: #b88159;
  --peach-soft: #f6e8d8;

  /* Star/Star-yellow */
  --gold: #d4b15c;
  --gold-soft: #f5edd6;

  /* Radii */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;
  --r-xl: 22px;

  /* Shadows — soft */
  --shadow-1: 0 1px 2px rgba(40, 30, 20, 0.04), 0 1px 0 rgba(40, 30, 20, 0.02);
  --shadow-2: 0 2px 6px rgba(40, 30, 20, 0.05), 0 1px 2px rgba(40, 30, 20, 0.04);
  --shadow-3: 0 12px 32px rgba(40, 30, 20, 0.08), 0 4px 12px rgba(40, 30, 20, 0.04);
  --shadow-4: 0 24px 60px rgba(40, 30, 20, 0.1), 0 8px 20px rgba(40, 30, 20, 0.06);

  /* Type */
  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* Base artboard reset */
.de-screen,
.de-screen * {
  box-sizing: border-box;
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.de-screen {
  width: 100%;
  height: 100%;
  background: var(--surface);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: -0.005em;
  position: relative;
  overflow: hidden;
}

/* ── App chrome ─────────────────────────────────────────────── */
.de-titlebar {
  height: 36px;
  background: linear-gradient(180deg, #efeae0 0%, #e8e2d4 100%);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  flex-shrink: 0;
}
.de-traffic {
  display: flex;
  gap: 6px;
}
.de-traffic span {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  display: block;
}
.de-traffic span:nth-child(1) { background: #ec6a5e; }
.de-traffic span:nth-child(2) { background: #f5bf4f; }
.de-traffic span:nth-child(3) { background: #61c554; }

.de-titlebar-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  margin-left: auto;
  margin-right: auto;
  transform: translateX(-22px); /* visually center past traffic */
  letter-spacing: 0;
}

/* ── Topbar ──────────────────────────────────────────────────── */
.de-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}
.de-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.de-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  display: grid;
  place-items: center;
  color: white;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 10px rgba(108, 132, 179, 0.3);
}
.de-brand-name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.de-dict-picker {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  box-shadow: var(--shadow-1);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.de-dict-picker:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-2);
}
.de-dict-picker .label {
  color: var(--ink-3);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}
.de-dict-picker .val {
  font-weight: 500;
}
.de-dict-picker .zh {
  color: var(--ink-3);
  font-size: 12px;
}

.de-avatar {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: linear-gradient(135deg, #e6c8a8 0%, #c9a47a 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 600;
  font-size: 13px;
  box-shadow: var(--shadow-1);
}

/* ── Generic cards ───────────────────────────────────────────── */
.de-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
}
.de-card-pad {
  padding: 22px;
}

/* Section labels */
.de-section-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}
.de-section-label h3 {
  font-size: 14px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.005em;
}
.de-section-label .sub {
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
}

/* Buttons */
.de-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.06s;
  box-shadow: var(--shadow-1);
}
.de-btn:hover { border-color: var(--border-strong); background: var(--card-tint); }
.de-btn:active { transform: translateY(1px); }

.de-btn.primary {
  background: var(--blue);
  border-color: var(--blue-deep);
  color: white;
  box-shadow: 0 2px 0 var(--blue-deep), 0 6px 14px rgba(108, 132, 179, 0.35);
}
.de-btn.primary:hover { background: var(--blue-deep); }

.de-btn.ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}
.de-btn.ghost:hover { background: rgba(0,0,0,0.04); }

.de-btn.danger { color: var(--peach-deep); }

/* Icon buttons */
.de-icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  color: var(--ink-2);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.de-icon-btn:hover { background: var(--card-tint); color: var(--ink); border-color: var(--border-strong); }
.de-icon-btn.active { background: var(--blue-soft); border-color: var(--blue); color: var(--blue-deep); }

/* Pills/Tags */
.de-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-family: var(--font-mono);
  letter-spacing: 0;
}
.de-pill.blue { background: var(--blue-soft); color: var(--blue-deep); }
.de-pill.green { background: var(--green-soft); color: var(--green-deep); }
.de-pill.peach { background: var(--peach-soft); color: var(--peach-deep); }

/* ── Common screen layout ────────────────────────────────────── */
.de-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  overflow: auto;
  height: calc(100% - 36px - 73px);
}

/* Scrollbar hide */
.de-body::-webkit-scrollbar { display: none; }
.de-body { scrollbar-width: none; }

/* Helpers */
.de-row { display: flex; gap: 16px; }
.de-col { display: flex; flex-direction: column; gap: 16px; }
.de-grow { flex: 1 1 0; min-width: 0; }
.de-mono { font-family: var(--font-mono); }
.de-muted { color: var(--ink-3); }
.de-zh { color: var(--ink-2); font-size: 13px; }

/* Hover lift on interactive cards */
.de-hover-lift {
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.de-hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
  border-color: var(--border-strong);
}

/* Quiet section header */
.de-h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.015em;
}
.de-h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.005em;
}
.de-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}