/* ================================================================
   Trader Filter — 交易信息过滤看板 样式
   Dark terminal theme, responsive, mobile-first
   ================================================================ */

:root {
  --bg: #0d0d1a;
  --bg-card: #16162a;
  --bg-input: #1e1e3a;
  --border: #2a2a4a;
  --text: #e0e0e0;
  --text-dim: #8888aa;
  --accent: #4fc3f7;
  --green: #00e676;
  --red: #ff5252;
  --neutral: #9e9e9e;
  --gold: #ffd740;
  --danger: #ff5252;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

.screen { display: none; }
.screen.active { display: flex; }

/* ============================
   Login Screen
   ============================ */

#login-screen {
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 30px;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-card .logo { font-size: 48px; margin-bottom: 12px; }

.login-card h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #fff;
}

.login-card .subtitle {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#login-form input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 12px 16px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

#login-form input:focus { border-color: var(--accent); }

#login-form button {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

#login-form button:hover { opacity: 0.85; }

.error-msg {
  color: var(--red);
  font-size: 13px;
  margin-top: 8px;
  min-height: 20px;
}

/* ============================
   App Screen
   ============================ */

#app-screen {
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

/* Top Nav */
.top-nav {
  display: flex;
  gap: 4px;
  padding: 10px 12px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-btn {
  flex: 1;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--text-dim);
  padding: 10px 16px;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.nav-btn.active {
  background: var(--bg-input);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.nav-logout {
  flex: 0 0 auto;
  padding: 10px 14px;
  font-size: 16px;
}

/* Tab Content */
.tab-content { display: none; flex-direction: column; flex: 1; }
.tab-content.active { display: flex; }

/* ============================
   Analyze Tab
   ============================ */

.input-area {
  padding: 12px;
}

.input-wrapper {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

#input-text {
  width: 100%;
  background: var(--bg-input);
  border: none;
  color: var(--text);
  padding: 14px 16px;
  font-size: 15px;
  font-family: var(--font);
  resize: vertical;
  min-height: 100px;
  outline: none;
  line-height: 1.6;
}

#input-text::placeholder { color: #555; }

.file-drop-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(79, 195, 247, 0.12);
  border: 2px dashed var(--accent);
  border-radius: var(--radius);
  justify-content: center;
  align-items: center;
  font-size: 16px;
  color: var(--accent);
  pointer-events: none;
  z-index: 2;
}

.file-drop-overlay.show { display: flex; }

.input-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
}

.file-upload-btn {
  cursor: pointer;
  font-size: 20px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.2s;
  line-height: 1;
}

.file-upload-btn:hover { background: var(--bg-input); }

.file-name {
  flex: 1;
  font-size: 12px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font);
  transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.85; }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-small {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}

.btn-small:hover { border-color: var(--accent); }

.btn-outline { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-danger:hover { opacity: 0.85; }

.hidden { display: none !important; }

.status-msg {
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
}

/* Result Cards */
.result-area {
  padding: 0 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.result-summary {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 12px;
}

.asset-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.asset-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  user-select: none;
}

.asset-tag:active { transform: scale(0.97); }

.asset-tag.direction-利多 {
  background: rgba(0, 230, 118, 0.15);
  color: var(--green);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.asset-tag.direction-利空 {
  background: rgba(255, 82, 82, 0.15);
  color: var(--red);
  border: 1px solid rgba(255, 82, 82, 0.3);
}

.asset-tag.direction-中性 {
  background: rgba(158, 158, 158, 0.15);
  color: var(--neutral);
  border: 1px solid rgba(158, 158, 158, 0.3);
}

.asset-detail {
  display: none;
  margin-top: 10px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.7;
}

.asset-detail.open { display: block; }

.asset-detail .logic-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.asset-detail .logic-text {
  color: var(--text);
  margin-bottom: 8px;
}

.asset-detail .evidence-text {
  color: var(--gold);
  font-style: italic;
  font-size: 12px;
}

.impact-badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.impact-高 { background: rgba(255, 215, 64, 0.2); color: var(--gold); }
.impact-中 { background: rgba(79, 195, 247, 0.2); color: var(--accent); }
.impact-低 { background: rgba(158, 158, 158, 0.2); color: var(--neutral); }

.no-impact {
  color: var(--text-dim);
  font-size: 14px;
  padding: 8px 0;
}

/* ============================
   History Tab
   ============================ */

.history-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
}

.filter-input {
  flex: 1 1 120px;
  min-width: 100px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--font);
  outline: none;
}

.filter-input:focus { border-color: var(--accent); }

.filter-select {
  flex: 0 0 auto;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  cursor: pointer;
}

.filter-date {
  flex: 0 0 auto;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  color-scheme: dark;
}

.filter-date:focus { border-color: var(--accent); }

.history-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px 8px;
  flex-wrap: wrap;
}

.batch-count {
  font-size: 13px;
  color: var(--accent);
}

.history-list {
  padding: 0 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  overflow-y: auto;
}

.history-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: border-color 0.2s;
}

.history-item:hover { border-color: #444; }

.history-item.selected {
  border-color: var(--accent);
  background: rgba(79, 195, 247, 0.05);
}

.history-checkbox {
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
}

.history-content { flex: 1; min-width: 0; }

.history-summary {
  font-size: 14px;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 6px;
  cursor: pointer;
}

.history-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.history-meta .time { color: var(--text-dim); }
.history-meta .source-tag {
  background: var(--bg-input);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
}

.history-assets {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.history-asset-mini {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.history-asset-mini.dir-利多 { background: rgba(0,230,118,0.15); color: var(--green); }
.history-asset-mini.dir-利空 { background: rgba(255,82,82,0.15); color: var(--red); }
.history-asset-mini.dir-中性 { background: rgba(158,158,158,0.15); color: var(--neutral); }

.history-delete {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-dim);
  padding: 6px 8px;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.2s;
  line-height: 1;
}

.history-delete:hover {
  color: var(--red);
  border-color: var(--red);
}

.history-empty {
  text-align: center;
  color: var(--text-dim);
  padding: 40px 20px;
  font-size: 14px;
}

/* History detail expand */
.history-detail {
  display: none;
  margin-top: 10px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.7;
}

.history-detail.open { display: block; }

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

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

.load-more {
  text-align: center;
  padding: 10px;
}

.load-more button {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  padding: 8px 20px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
}

.load-more button:hover { border-color: var(--accent); }

/* ============================
   Responsive
   ============================ */

/* Mobile first is the default above. Desktop tweaks: */
@media (min-width: 768px) {
  #app-screen {
    max-width: 720px;
    margin: 0 auto;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }

  .top-nav {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }

  .input-area { padding: 16px 20px; }
  .result-area { padding: 0 20px 24px; }
  .history-filters,
  .history-actions { padding-left: 20px; padding-right: 20px; }
  .history-list { padding: 0 20px 24px; }

  .history-filters { flex-wrap: nowrap; }
}

/* Larger screens */
@media (min-width: 1024px) {
  #app-screen {
    max-width: 800px;
  }
}

/* iOS safe area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .top-nav { padding-top: calc(10px + env(safe-area-inset-top)); }
  #tab-history { padding-bottom: env(safe-area-inset-bottom); }
}