:root {
  --bg: #0d1410;
  --bg-soft: #111a14;
  --card: #16211a;
  --card-2: #1b2a21;
  --border: #24362a;
  --border-strong: #34503c;
  --text: #e8f0ea;
  --text-dim: #a8bcae;
  --muted: #74877b;
  --accent: #7ee0a3;
  --accent-strong: #a6f0c0;
  --accent-dim: #2c4a39;
  --amber: #e8b46b;
  --danger: #f08787;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --font: "Inter", "SF Pro Text", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(46, 110, 75, 0.22), transparent 60%),
    radial-gradient(800px 400px at -10% 30%, rgba(30, 74, 55, 0.16), transparent 55%);
  z-index: 0;
}
main, header, footer { position: relative; z-index: 1; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 20, 16, 0.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: 0.2px; }
.brand-tag { font-size: 12px; color: var(--muted); }
.topbar-right { display: flex; align-items: center; gap: 10px; }

.badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  background: var(--bg-soft);
}
.badge-ok { color: var(--accent); border-color: #2c6b46; background: #14251b; }
.badge-off { color: var(--amber); border-color: #5a4a28; background: #241f14; }
.badge-pending { color: var(--muted); }

/* ---------- Layout ---------- */
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.card {
  background: linear-gradient(180deg, var(--card), var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
}

.page-title { font-size: 26px; line-height: 1.2; margin: 0 0 8px; font-weight: 700; letter-spacing: -0.3px; }
.page-sub { color: var(--text-dim); margin: 0 0 22px; max-width: 70ch; }

/* ---------- Form ---------- */
.form { display: flex; flex-direction: column; gap: 18px; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-dim); letter-spacing: 0.3px; }

input[type="text"], input[type="number"], select, textarea {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  font-size: 14.5px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px rgba(126, 224, 163, 0.12);
}
input::placeholder { color: var(--muted); }

input[type="number"] { width: 110px; font-variant-numeric: tabular-nums; }

select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23a8bcae' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 13px center; padding-right: 34px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: 1.2fr 1fr 1.4fr; gap: 18px; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.12s;
}
.chip:hover { border-color: var(--border-strong); }
.chip.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-strong); }

/* segmented */
.seg { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.seg-btn {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  padding: 8px 13px;
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.12s;
}
.seg-btn:hover { border-color: var(--border-strong); color: var(--text); }
.seg-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-strong); font-weight: 600; }

/* count row */
.count-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.quick { display: flex; gap: 6px; flex-wrap: wrap; }
.quick-btn {
  min-width: 42px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  padding: 8px 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.12s;
}
.quick-btn:hover { border-color: var(--border-strong); }
.quick-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-strong); font-weight: 600; }

.count-label { font-size: 13px; color: var(--accent-strong); }
.field-error { font-size: 13px; color: var(--danger); font-weight: 550; }
.input-error { border-color: var(--danger) !important; box-shadow: 0 0 0 3px rgba(240, 135, 135, 0.15) !important; }
.hidden { display: none !important; }

/* primary button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(180deg, #2e8f55, #237a47);
  border: 1px solid #3aa86a;
  color: #fff;
  font-weight: 650;
  font-size: 15px;
  padding: 13px 20px;
  border-radius: 11px;
  cursor: pointer;
  transition: transform 0.06s, filter 0.15s;
  font-family: inherit;
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:active { transform: scale(0.99); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-secondary, .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-weight: 550;
  font-size: 13.5px;
  padding: 9px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.12s;
  font-family: inherit;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-strong); }
.btn-ghost { color: var(--text-dim); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Trend tip + suggestions ---------- */
.trend-tip {
  font-size: 12.5px;
  color: var(--text-dim);
  background: var(--bg-soft);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-top: 6px;
}
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.section-head h2 { margin: 0; font-size: 17px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }

.trends-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.trend-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  cursor: pointer;
  transition: all 0.12s;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
}
.trend-item:hover { border-color: var(--accent-dim); background: var(--card-2); }
.trend-item .t-title { font-weight: 650; }
.trend-item .t-keyword { font-size: 12.5px; color: var(--text-dim); }
.trend-item .t-meta { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 10px; }
.signal-rising { color: var(--accent); }
.signal-breakout { color: var(--amber); }
.signal-steady { color: var(--muted); }

/* ---------- Results ---------- */
.results-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.results-meta { font-size: 13.5px; color: var(--text-dim); line-height: 1.7; }
.results-meta strong { color: var(--text); }
.results-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.prompt-list { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }

.prompt-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color 0.15s;
}
.prompt-card:hover { border-color: var(--border-strong); }
.prompt-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.prompt-card-title { font-size: 15.5px; font-weight: 650; }
.prompt-card-title .num { color: var(--accent); margin-right: 8px; font-variant-numeric: tabular-nums; }
.prompt-model-tag {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.prompt-preview {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-dim);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 10px 0 12px;
  max-height: 96px;
  overflow: hidden;
  white-space: pre-wrap;
  word-break: break-word;
}
.prompt-card-foot { display: flex; gap: 8px; }
.mini-btn {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.12s;
  font-family: inherit;
}
.mini-btn:hover { border-color: var(--accent); color: var(--accent-strong); }
.mini-btn.copied { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-strong); }
.mini-btn.danger-hover:hover { border-color: var(--danger); color: var(--danger); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 10, 8, 0.72);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}
.modal {
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  width: min(760px, 100%);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0 0 4px; font-size: 16.5px; }
.modal-close {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
}
.modal-close:hover { color: var(--text); background: var(--bg-soft); }
#modal-text {
  flex: 1;
  min-height: 240px;
  border: none;
  border-radius: 0;
  background: var(--bg-soft);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  resize: none;
  padding: 16px 20px;
}
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 14px;
  box-shadow: var(--shadow);
  z-index: 60;
  animation: toast-in 0.2s ease-out;
  max-width: 90vw;
}
@keyframes toast-in { from { opacity: 0; transform: translateX(-50%) translateY(12px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* ---------- Footer ---------- */
.footer { text-align: center; color: var(--muted); font-size: 12.5px; margin-top: 34px; }

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex;
  gap: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  margin-bottom: 20px;
}
.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 14.5px;
  font-weight: 600;
  padding: 11px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  background: var(--card-2);
  color: var(--accent-strong);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.tab-panel { display: block; }
.tab-panel.hidden { display: none; }

/* ---------- Suggest by AI ---------- */
.topic-row { display: flex; gap: 8px; }
.topic-row input { flex: 1; }
.btn-suggest {
  background: linear-gradient(180deg, #276a44, #1f5736);
  border: 1px solid #34985d;
  color: #d8f5e3;
  font-weight: 620;
  font-size: 13.5px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: filter 0.15s;
  font-family: inherit;
}
.btn-suggest:hover { filter: brightness(1.12); }
.btn-suggest:disabled { opacity: 0.55; cursor: wait; }

.suggest-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 30;
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
  max-height: 320px;
  overflow-y: auto;
}
.suggest-item {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 11px 14px;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
}
.suggest-item:last-child { border-bottom: none; }
.suggest-item:hover { background: var(--card); }
.suggest-item .s-text { font-weight: 650; font-size: 14px; display: block; }
.suggest-item .s-reason { font-size: 12px; color: var(--muted); display: block; margin-top: 2px; }
.suggest-empty { padding: 12px 14px; color: var(--muted); font-size: 13px; }

/* ---------- Trends tab results ---------- */
.trend-country { margin-bottom: 22px; }
.trend-country-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.trend-country-head h3 { margin: 0; font-size: 16.5px; }
.trend-country-head .country-flag { font-size: 18px; margin-right: 6px; }
.trend-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all 0.12s;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  width: 100%;
}
.trend-card:hover { border-color: var(--accent-dim); background: var(--card-2); }
.trend-card .t-title { font-weight: 650; font-size: 14.5px; }
.trend-card .t-keyword { font-size: 12.5px; color: var(--text-dim); }
.trend-card .t-meta { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 10px; }
.trend-card .t-use {
  margin-top: 4px;
  font-size: 12px;
  color: var(--accent-strong);
  font-weight: 620;
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .trends-list { grid-template-columns: 1fr; }
  .card { padding: 20px 16px; }
  .page-title { font-size: 21px; }
  .results-head { flex-direction: column; align-items: stretch; }
}