/* ==========================================================================
   DMC SQLAnalyzer Enterprise Dashboard — Modern Single-Page Optimizer Theme
   Refined for High-Density Database Intelligence & Accurate Screenshot Match
   ========================================================================== */

:root {
  --bg-main: #060911;
  --bg-card: rgba(11, 17, 32, 0.88);
  --bg-card-inner: rgba(17, 24, 43, 0.75);
  --bg-card-hover: rgba(22, 33, 58, 0.95);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(14, 165, 233, 0.45);
  --border-danger: rgba(244, 63, 94, 0.45);
  --border-success: rgba(16, 185, 129, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  /* Enterprise Accents */
  --db-blue: #0284c7;
  --db-cyan: #06b6d4;
  --db-sky: #38bdf8;
  --db-indigo: #6366f1;
  --db-purple: #a855f7;
  --db-red: #f43f5e;
  --db-amber: #f59e0b;
  --db-emerald: #10b981;

  --font-heading: 'Outfit', 'Noto Sans KR', sans-serif;
  --font-body: 'Inter', 'Noto Sans KR', sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', monospace;
}

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

body {
  background-color: var(--bg-main);
  background-image:
    radial-gradient(ellipse 90% 60% at 20% 0%, rgba(2, 132, 199, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 15%, rgba(99, 102, 241, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background grid & Glows */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
}

.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
}
.orb-left {
  width: 500px;
  height: 400px;
  background: #0369a1;
  opacity: 0.18;
  top: -100px;
  left: -100px;
}
.orb-right {
  width: 450px;
  height: 400px;
  background: #4338ca;
  opacity: 0.15;
  bottom: -100px;
  right: -100px;
}

.app-layout {
  position: relative;
  z-index: 1;
  max-width: 1480px;
  margin: 0 auto;
  padding: 12px 18px 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 1. Brand Top Bar */
.brand-top-bar {
  display: flex;
  align-items: center;
  padding: 4px 6px;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 10px;
}

.db-icon-pulse {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  box-shadow: 0 0 16px rgba(2, 132, 199, 0.45);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.version-badge {
  font-size: 11px;
  font-weight: 700;
  color: #38bdf8;
  background: rgba(2, 132, 199, 0.16);
  border: 1px solid rgba(2, 132, 199, 0.35);
  padding: 2px 7px;
  border-radius: 5px;
}

/* 2. Sub Navigation Header Line */
.analyzer-sub-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  backdrop-filter: blur(14px);
  gap: 12px;
}

.sub-nav-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sub-nav-dot {
  color: var(--db-cyan);
  font-size: 11px;
}

.sub-nav-title {
  font-family: var(--font-heading);
  font-size: 13.5px;
  font-weight: 700;
  color: #ffffff;
}

.badge-analyzer-pro {
  font-size: 11px;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  padding: 2px 8px;
  border-radius: 4px;
  box-shadow: 0 0 8px rgba(2, 132, 199, 0.3);
}

.sub-nav-right {
  display: flex;
  align-items: center;
}

/* DBMS Select Tags */
.dbms-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.35);
  padding: 3px 6px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.dbms-tag {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 4px 9px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 5px;
}
.dbms-tag:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}
.dbms-tag.active {
  color: #ffffff;
  background: rgba(2, 132, 199, 0.25);
  border: 1px solid rgba(2, 132, 199, 0.45);
  box-shadow: 0 0 8px rgba(2, 132, 199, 0.2);
}

/* Nav Status Indicators */
.nav-status-indicators {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-pill {
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.status-ready {
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.status-time {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.status-warning {
  background: rgba(244, 63, 94, 0.16);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: #fda4af;
}

/* Nav Right Buttons */
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-outline-nav {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 13px;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}
.btn-outline-nav:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
}

/* Section Card Common */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  backdrop-filter: blur(14px);
  padding: 16px 20px;
}

.section-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.header-title-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-title-left h2 {
  font-family: var(--font-heading);
  font-size: 16.5px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.sub-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 2px 7px;
  border-radius: 5px;
}

.target-db-label {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.db-select {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-subtle);
  color: #38bdf8;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  outline: none;
}
.db-select:focus {
  border-color: var(--border-focus);
}

/* Dual Editor Grid */
.dual-editor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 980px) {
  .dual-editor-grid {
    grid-template-columns: 1fr;
  }
}

.editor-column {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.editor-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.editor-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: #e2e8f0;
}

.file-name-pill {
  font-size: 11px;
  font-family: var(--font-code);
  font-weight: 500;
  color: #38bdf8;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(2, 132, 199, 0.25);
  padding: 1px 7px;
  border-radius: 4px;
}

.editor-meta-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.meta-pill {
  font-size: 11px;
  color: var(--text-muted);
}
.meta-pill strong {
  color: #cbd5e1;
}

.icon-tool-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: all 0.2s;
}
.icon-tool-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.editor-meta-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.schema-tag {
  font-size: 11px;
  font-family: var(--font-code);
  color: #94a3b8;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.schema-tag.highlight {
  color: #34d399;
}

.code-editor-wrap {
  position: relative;
  height: 180px;
}

.code-textarea {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  padding: 10px 14px;
  color: #7dd3fc;
  font-family: var(--font-code);
  font-size: 12px;
  line-height: 1.6;
  white-space: pre;
}

.code-textarea.sql-highlight {
  color: #6ee7b7;
}

/* Action Bar */
.analyzer-action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
  gap: 12px;
}

.analyzer-mode-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--db-cyan);
  box-shadow: 0 0 10px var(--db-cyan);
}

.btn-analyze-action {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #ffffff;
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 0 18px rgba(2, 132, 199, 0.35);
  transition: all 0.25s ease;
}
.btn-analyze-action:hover {
  background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%);
  box-shadow: 0 0 24px rgba(56, 189, 248, 0.5);
  transform: translateY(-1px);
}

/* 8-Area Deep Analysis Grid */
.analysis-eight-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 1080px) {
  .analysis-eight-grid {
    grid-template-columns: 1fr;
  }
}

.grid-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  backdrop-filter: blur(14px);
  padding: 16px 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s ease;
}
.grid-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-index {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 800;
  color: var(--db-cyan);
}

.card-title-group h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.card-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
}
.badge-blue {
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid rgba(2, 132, 199, 0.35);
  color: #38bdf8;
}
.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: #22d3ee;
}
.badge-green {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}
.badge-red {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.35);
  color: #fda4af;
}

.card-head-icon {
  color: var(--text-muted);
  font-size: 14px;
}

/* Card 1: Table Pipeline & Selector */
.driving-flow-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 8px 14px;
  gap: 10px;
}

.df-node {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 11.5px;
}
.df-node strong {
  font-size: 13px;
  color: #ffffff;
}
.df-node span {
  font-size: 10.5px;
  color: var(--text-muted);
}
.df-node.driving strong {
  color: #38bdf8;
}
.df-node.driven strong {
  color: #cbd5e1;
}

.df-connector {
  font-size: 11px;
  font-weight: 700;
  color: var(--db-cyan);
  background: rgba(2, 132, 199, 0.15);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(2, 132, 199, 0.3);
}

.table-selector-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.selector-head {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
}

.pill-info {
  font-size: 10.5px;
  color: var(--db-sky);
}

.table-cards-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.tbl-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.tbl-card:hover {
  background: rgba(22, 33, 58, 0.8);
  border-color: rgba(255, 255, 255, 0.15);
}
.tbl-card.active {
  border-color: #0284c7;
  background: rgba(2, 132, 199, 0.12);
}

.tbl-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.tbl-name {
  font-size: 12.5px;
  color: #ffffff;
}

.tbl-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
}
.tbl-status-dot.active {
  background: #38bdf8;
  box-shadow: 0 0 6px #38bdf8;
}

.tbl-role-badge {
  font-size: 9.5px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
}
.tbl-role-badge.driving {
  background: rgba(2, 132, 199, 0.25);
  color: #38bdf8;
}
.tbl-role-badge.driven {
  background: rgba(255, 255, 255, 0.08);
  color: #94a3b8;
}

.tbl-card-stats {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
}
.tbl-card-stats strong {
  color: #e2e8f0;
}

/* Detail Sub View */
.table-sub-detail-box {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.detail-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.detail-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: #e2e8f0;
}

.detail-role-pill {
  font-size: 10px;
  color: var(--db-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 1px 6px;
  border-radius: 4px;
}

.detail-tab-btns {
  display: flex;
  gap: 4px;
}

.d-tab-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 10.5px;
  padding: 2px 7px;
  border-radius: 4px;
  cursor: pointer;
}
.d-tab-btn.active {
  background: rgba(2, 132, 199, 0.2);
  border-color: rgba(2, 132, 199, 0.4);
  color: #38bdf8;
}

.detail-table-wrap {
  overflow-x: auto;
}

.schema-mini-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
.schema-mini-table th {
  text-align: left;
  padding: 4px 6px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.schema-mini-table td {
  padding: 5px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  color: #cbd5e1;
}
.schema-mini-table code {
  font-family: var(--font-code);
  color: #7dd3fc;
}

.t-badge {
  font-size: 9.5px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
}
.t-badge.pk {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}
.t-badge.nn {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}
.t-badge.dim {
  color: var(--text-dim);
}

.t-badge-info {
  font-size: 10px;
  color: #38bdf8;
}
.t-badge-green {
  font-size: 10px;
  color: #34d399;
}
.t-badge-cyan {
  font-size: 10px;
  color: #22d3ee;
}
.t-badge-mute {
  font-size: 10px;
  color: var(--text-dim);
}

/* Footer Notes */
.card-footer-note {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10.5px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  margin-top: auto;
}
.f-note-left {
  display: flex;
  align-items: center;
  gap: 5px;
}
.f-note-left i {
  color: #10b981;
}
.f-note-left.warning i {
  color: #f59e0b;
}
.f-note-right.danger {
  color: #fda4af;
  font-weight: 700;
}

/* Card 2: Column Analysis */
.columns-dual-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.col-sub-panel {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.col-sub-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.col-panel-title {
  font-size: 11.5px;
  font-weight: 700;
  color: #e2e8f0;
}

.res-mini-pill {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(2, 132, 199, 0.15);
  color: #38bdf8;
}
.res-mini-pill.filter {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}

.col-tag-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.col-tag-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  padding: 5px 8px;
}
.col-tag-item.danger-border {
  border-color: rgba(244, 63, 94, 0.35);
  background: rgba(244, 63, 94, 0.06);
}

.col-code {
  font-family: var(--font-code);
  font-size: 11px;
  color: #7dd3fc;
}

.col-role-tag {
  font-size: 10px;
  color: var(--text-secondary);
}
.col-role-tag.join {
  color: #38bdf8;
  font-weight: 600;
}
.col-role-tag.danger {
  color: #fda4af;
  font-weight: 600;
}
.col-role-tag.success {
  color: #34d399;
  font-weight: 600;
}

.io-feedback-box {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 11px;
  color: #6ee7b7;
  display: flex;
  align-items: center;
  gap: 7px;
}
.io-feedback-box code {
  font-family: var(--font-code);
  color: #a7f3d0;
}

/* Card 3: JOIN Strategy & Diagram */
.join-diagram-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 16px;
  gap: 12px;
}

.join-entity {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 6px 14px;
}
.ent-title {
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
}
.ent-sub {
  font-size: 10px;
  color: var(--text-muted);
}

.join-relation-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.rel-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--db-cyan);
}

.rel-line {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  justify-content: center;
}

.rel-node {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
}

.rel-fk-pill {
  font-size: 10.5px;
  font-family: var(--font-code);
  color: #cbd5e1;
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid rgba(2, 132, 199, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
}

.join-strategy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.strategy-box {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.strat-head {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-secondary);
}

.strat-val {
  font-size: 12px;
  font-weight: 700;
  color: #38bdf8;
}

.strat-desc {
  font-size: 10px;
  color: var(--text-muted);
}

/* Card 4: WHERE SARGable Condition */
.where-condition-card {
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.where-condition-card.danger-card {
  background: rgba(244, 63, 94, 0.07);
  border: 1px solid var(--border-danger);
}
.where-condition-card.success-card {
  background: rgba(16, 185, 129, 0.07);
  border: 1px solid var(--border-success);
}

.where-cond-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cond-sql {
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 600;
  color: #ffffff;
}

.danger-pill {
  font-size: 10px;
  font-weight: 700;
  color: #fda4af;
  background: rgba(244, 63, 94, 0.2);
  padding: 2px 7px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.success-pill {
  font-size: 10px;
  font-weight: 700;
  color: #34d399;
  background: rgba(16, 185, 129, 0.2);
  padding: 2px 7px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.cond-explanation {
  font-size: 11px;
  color: #cbd5e1;
  line-height: 1.45;
}
.cond-explanation code {
  font-family: var(--font-code);
  color: #38bdf8;
}

.tuning-suggestion-box {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(244, 63, 94, 0.25);
  border-radius: 6px;
  padding: 7px 10px;
  margin-top: 2px;
}

.sugg-head {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  color: #fca5a5;
  margin-bottom: 4px;
}

.sugg-code {
  font-family: var(--font-code);
  font-size: 11px;
  color: #34d399;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Card 5: Subquery Structure */
.subquery-clean-box {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.clean-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.clean-head strong {
  font-size: 13px;
  color: #ffffff;
}
.clean-head p {
  font-size: 11px;
  color: var(--text-muted);
}

.subquery-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.subquery-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 11px;
  color: #cbd5e1;
  line-height: 1.4;
}
.subquery-feature-list li i {
  color: var(--db-emerald);
  font-size: 10px;
  margin-top: 3px;
}

/* Card 6: Execution Pipeline */
.pipeline-flow-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.pipeline-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 7px 10px;
}
.pipeline-item.warning-step {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.05);
}

.step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(2, 132, 199, 0.25);
  border: 1px solid rgba(2, 132, 199, 0.5);
  color: #38bdf8;
  font-size: 10.5px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.warning-step .step-num {
  background: rgba(245, 158, 11, 0.25);
  border-color: rgba(245, 158, 11, 0.5);
  color: #fbbf24;
}

.step-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: #ffffff;
}
.step-sub {
  font-size: 10.5px;
  color: var(--text-muted);
}

.step-desc {
  font-size: 10.5px;
  color: #94a3b8;
  line-height: 1.35;
}
.step-desc code {
  font-family: var(--font-code);
  color: #7dd3fc;
}

/* Card 7: Bottleneck Alerts */
.risk-card {
  border-radius: 8px;
  padding: 9px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.risk-card.high-risk {
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid var(--border-danger);
}
.risk-card.med-risk {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.risk-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.risk-badge {
  font-size: 9.5px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 3px;
}
.risk-badge.high {
  background: rgba(244, 63, 94, 0.25);
  color: #fda4af;
}
.risk-badge.med {
  background: rgba(245, 158, 11, 0.25);
  color: #fbbf24;
}

.risk-title {
  font-size: 12px;
  color: #ffffff;
  flex: 1;
}

.risk-icon {
  font-size: 12px;
}
.high-risk .risk-icon {
  color: #f43f5e;
}
.med-risk .risk-icon {
  color: #f59e0b;
}

.risk-desc {
  font-size: 10.5px;
  color: #cbd5e1;
  line-height: 1.4;
}
.risk-desc code {
  font-family: var(--font-code);
  color: #38bdf8;
}

.risk-meta-bar {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  color: var(--text-muted);
  padding-top: 3px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.risk-val-highlight {
  color: #fbbf24;
}

.latency-impact-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.latency-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11.5px;
  color: #e2e8f0;
}

.latency-values {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-code);
  font-weight: 700;
}
.lat-old {
  color: #fda4af;
  text-decoration: line-through;
  font-size: 13px;
}
.lat-arrow {
  color: var(--db-cyan);
  font-size: 11px;
}
.lat-new {
  color: #34d399;
  font-size: 15px;
}

.latency-sub-gain {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gain-badge {
  font-size: 10.5px;
  font-weight: 700;
  color: #34d399;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 2px 7px;
  border-radius: 4px;
}

.tps-gain {
  font-size: 11px;
  color: #cbd5e1;
}

/* Card 8: Index Recommendations */
.rec-index-card {
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rec-index-card.primary-rec {
  border-color: rgba(2, 132, 199, 0.35);
}

.rec-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rec-label-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rec-title {
  font-size: 12px;
  color: #ffffff;
}

.rec-sub-pill {
  font-size: 10px;
  color: #38bdf8;
  background: rgba(2, 132, 199, 0.15);
  padding: 1px 6px;
  border-radius: 4px;
}

.btn-copy-ddl {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 10.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s;
}
.btn-copy-ddl:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.rec-code {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 5px;
  padding: 7px 10px;
  font-family: var(--font-code);
  font-size: 11px;
  color: #34d399;
  white-space: pre-wrap;
  word-break: break-all;
}

.rec-reasons {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 10.5px;
}

.reason-label {
  color: var(--text-muted);
  font-weight: 600;
}

.reason-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 6px;
}
.reason-list li {
  color: #cbd5e1;
  line-height: 1.35;
}
.reason-list li code {
  font-family: var(--font-code);
  color: #7dd3fc;
}

.index-action-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  flex-wrap: wrap;
  gap: 8px;
}

.footer-msg {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  color: #6ee7b7;
}

.btn-simulate-apply {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border: 1px solid rgba(52, 211, 153, 0.4);
  color: #ffffff;
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 14px rgba(16, 185, 129, 0.3);
  transition: all 0.2s;
}
.btn-simulate-apply:hover {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  box-shadow: 0 0 18px rgba(52, 211, 153, 0.45);
}

/* Global Footer & Compliances */
.app-footer {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 6px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-brand .f-brand-title {
  font-size: 13.5px;
  color: #ffffff;
}
.footer-brand .f-brand-title span {
  color: var(--text-secondary);
}
.footer-brand .f-brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.footer-compliance {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.comp-badge {
  font-size: 11px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.comp-badge i {
  color: var(--db-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  flex-wrap: wrap;
  gap: 10px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #ffffff;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}
.toast-msg {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid #0284c7;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 12.5px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeInToast 0.3s ease;
}
@keyframes fadeInToast {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}