/* dba-core.css — Unique database mastery theme
   Focus: IDE-like blueprint, technical precision, dark logic-flow */

:root {
  /* Unique Variable System (DBA - Database Architect) */
  --dba-core-bg: #0c0e12;
  --dba-canvas-bg: #14171d;
  --dba-panel-bg: rgba(22, 26, 33, 0.8);
  --dba-accent: #3a86ff;
  --dba-accent-glow: rgba(58, 134, 255, 0.4);
  --dba-signal: #06d6a0;
  --dba-warning: #ffbe0b;
  --dba-text-sharp: #f8f9fa;
  --dba-text-dim: #94a3b8;
  --dba-border-logic: #2d3748;
  --dba-border-active: #4a5568;
  --dba-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --dba-font-sans: 'Inter', system-ui, sans-serif;
}

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

body {
  background-color: var(--dba-core-bg);
  color: var(--dba-text-sharp);
  font-family: var(--dba-font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  height: 100vh;
}

/* --- Layout Architecture (Non-standard) --- */

.db-explorer {
  width: 280px;
  background: var(--dba-core-bg);
  border-right: 1px solid var(--dba-border-logic);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  z-index: 100;
}

.blueprint-canvas {
  flex-grow: 1;
  background: var(--dba-canvas-bg);
  overflow-y: auto;
  scroll-behavior: smooth;
  position: relative;
}

/* --- Navigation & Explorer Elements --- */

.explorer-node {
  margin-bottom: 2rem;
}

.explorer-label {
  font-family: var(--dba-font-mono);
  font-size: 0.7rem;
  color: var(--dba-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.explorer-list {
  list-style: none;
}

.explorer-item {
  margin-bottom: 0.25rem;
}

.explorer-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  color: var(--dba-text-dim);
  text-decoration: none;
  font-size: 0.88rem;
  transition: all 0.2s ease;
}

.explorer-link:hover {
  background: var(--dba-panel-bg);
  color: var(--dba-text-sharp);
}

.explorer-link.is-active {
  background: rgba(58, 134, 255, 0.1);
  color: var(--dba-accent);
  box-shadow: inset 2px 0 0 var(--dba-accent);
}

/* --- Core Components --- */

.console-header {
  position: sticky;
  top: 0;
  background: rgba(20, 23, 29, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--dba-border-logic);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
}

.system-status {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.status-bit {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--dba-font-mono);
  font-size: 0.75rem;
  color: var(--dba-text-dim);
}

.status-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dba-signal);
  box-shadow: 0 0 8px var(--dba-signal);
}

/* --- Blueprint Sections --- */

.canvas-section {
  padding: 4rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.gate-visuals {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.gate-title {
  font-family: var(--dba-font-mono);
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--dba-text-sharp);
}

.gate-title span {
  color: var(--dba-accent);
}

.gate-brief {
  font-size: 1.15rem;
  color: var(--dba-text-dim);
  margin-bottom: 2.5rem;
  max-width: 32rem;
}

.blueprint-img-wrap {
  position: relative;
  border: 1px solid var(--dba-border-logic);
  padding: 1rem;
  background: var(--dba-panel-bg);
  border-radius: 12px;
}

.blueprint-img-wrap img {
  width: 100%;
  display: block;
  border-radius: 6px;
  filter: saturate(0.8);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2.5rem;
  background: var(--dba-accent);
  color: white;
  text-decoration: none;
  font-weight: 600;
  border-radius: 8px;
  box-shadow: 0 4px 14px var(--dba-accent-glow);
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--dba-accent-glow);
}

/* --- Logic Grid (Modules) --- */

.logic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.logic-node {
  background: var(--dba-panel-bg);
  border: 1px solid var(--dba-border-logic);
  padding: 2rem;
  border-radius: 12px;
  transition: border-color 0.3s ease;
  position: relative;
}

.logic-node:hover {
  border-color: var(--dba-accent);
}

.node-code {
  font-family: var(--dba-font-mono);
  font-size: 0.8rem;
  color: var(--dba-accent);
  margin-bottom: 1rem;
  display: block;
}

.node-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.node-content {
  font-size: 0.95rem;
  color: var(--dba-text-dim);
}

/* --- Vault Protocol (Legal) --- */

.protocol-gate {
  padding: 8rem 4rem;
  max-width: 800px;
  margin: 0 auto;
}

.protocol-text {
  font-size: 0.95rem;
  color: var(--dba-text-dim);
}

.protocol-text h2 {
  color: var(--dba-text-sharp);
  margin: 2rem 0 1rem;
}

/* --- Responsive --- */

@media (max-width: 1024px) {
  .db-explorer {
    position: fixed;
    transform: translateX(-100%);
  }
  .db-explorer.is-open {
    transform: translateX(0);
  }
  .gate-visuals {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .canvas-section {
    padding: 2rem 1.5rem;
  }
  .gate-title {
    font-size: 2.5rem;
  }
}