/* ═══════════════════════════════════════════════════════════
   AI TRAFFIC MANAGEMENT SYSTEM — PRESENTATION STYLES
   Dark theme, electric accents, classroom-readable
═══════════════════════════════════════════════════════════ */

:root {
  --bg:        #0a0a0f;
  --bg2:       #0d0d14;
  --bg3:       #111118;
  --cyan:      #00f5ff;
  --green:     #39ff14;
  --amber:     #ffb300;
  --white:     #f0f0f0;
  --gray:      #8a8a9a;
  --border:    #1e1e2e;
  --card-bg:   #0f0f1a;
}

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

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  overflow: hidden;
  user-select: none;
}

/* ─── FONTS ─────────────────────────────────────────────── */
.mono { font-family: 'Space Mono', monospace; font-weight: 400; }
.nabla-title {
  font-family: 'Nabla', cursive;
  line-height: 1;
}

/* ─── COLORS ─────────────────────────────────────────────── */
.cyan-text  { color: var(--cyan); }
.green-text { color: var(--green); }
.amber-text { color: var(--amber); }

/* ─── NAV BAR ─────────────────────────────────────────────── */
.nav-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 48px;
  background: rgba(10,10,15,0.95);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
  backdrop-filter: blur(12px);
}
.nav-title {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 2px;
}
.slide-counter {
  font-family: 'Space Mono', monospace;
  font-size: 14px;
  color: var(--gray);
}
.nav-right { display: flex; gap: 8px; }
.nav-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--white);
  width: 36px; height: 28px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.nav-btn:hover { border-color: var(--cyan); color: var(--cyan); }

/* ─── SLIDE DOTS ─────────────────────────────────────────── */
.slide-dots {
  position: fixed; bottom: 36px; left: 50%; transform: translateX(-50%);
  z-index: 100;
  display: flex; gap: 8px;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all 0.3s;
}
.dot.active { background: var(--cyan); transform: scale(1.4); }

/* ─── KEYBOARD HINT ──────────────────────────────────────── */
.keyboard-hint {
  position: fixed; bottom: 12px; left: 50%; transform: translateX(-50%);
  font-size: 11px; color: #333;
  z-index: 100;
  letter-spacing: 1px;
}

/* ─── SLIDES WRAPPER ─────────────────────────────────────── */
.slides-wrapper {
  position: fixed;
  top: 48px; left: 0; right: 0; bottom: 0;
}

/* ─── SLIDE BASE ─────────────────────────────────────────── */
.slide {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg);
  display: flex; align-items: stretch;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
  transform: translateX(40px);
  overflow: hidden;
}
.slide.active {
  opacity: 1;
  pointer-events: all;
  transform: translateX(0);
}
.slide.exit-left {
  opacity: 0;
  transform: translateX(-40px);
}

/* ─── SLIDE CONTENT ──────────────────────────────────────── */
.slide-content {
  width: 100%; height: 100%;
  padding: 28px 48px 60px;
  display: flex; flex-direction: column;
  gap: 20px;
  overflow: hidden;
}

/* ─── SLIDE HEADER ───────────────────────────────────────── */
.slide-header {
  display: flex; align-items: center; gap: 16px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 14px;
  flex-shrink: 0;
}
.slide-num {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 3px;
  opacity: 0.6;
}
.slide-heading {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--white);
  text-transform: uppercase;
  line-height: 1;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 1 — TITLE
═══════════════════════════════════════════════════════════ */
.title-slide {
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 18px;
  padding: 32px 60px 60px;
  position: relative;
}

.grid-canvas {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  opacity: 0.18;
  pointer-events: none;
}

.title-top-badge {
  display: flex; align-items: center; gap: 10px;
  justify-content: center;
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 3px;
  text-transform: uppercase;
}
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.nabla-title {
  font-size: clamp(42px, 6.5vw, 88px);
  background: linear-gradient(135deg, var(--cyan) 0%, #ffffff 50%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(0,245,255,0.4));
  letter-spacing: 2px;
  padding: 0 20px;
}

.cyan-line {
  width: 60%; height: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  margin: 0 auto;
  border-radius: 2px;
}

.subtitle {
  font-size: 18px;
  color: var(--gray);
  letter-spacing: 1px;
}

.title-tags {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}
.tag {
  padding: 6px 16px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  letter-spacing: 1px;
}
.tag-cyan  { border: 1px solid var(--cyan);  color: var(--cyan);  background: rgba(0,245,255,0.08); }
.tag-green { border: 1px solid var(--green); color: var(--green); background: rgba(57,255,20,0.08); }
.tag-amber { border: 1px solid var(--amber); color: var(--amber); background: rgba(255,179,0,0.08); }

.title-footer {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card-bg);
  width: 100%; max-width: 700px;
  margin: 0 auto;
}
.footer-item {
  flex: 1;
  padding: 14px 20px;
  display: flex; flex-direction: column; gap: 4px;
  align-items: center;
}
.footer-label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  color: var(--gray);
  letter-spacing: 2px;
}
.footer-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--white);
}
.footer-divider {
  width: 1px; height: 50px;
  background: var(--border);
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 2 — PROBLEM
═══════════════════════════════════════════════════════════ */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  flex: 1;
}
.problem-card {
  background: var(--card-bg);
  border-radius: 10px;
  border-left: 4px solid;
  padding: 20px 24px;
  display: flex; align-items: flex-start; gap: 18px;
}
.border-cyan  { border-color: var(--cyan); }
.border-green { border-color: var(--green); }
.border-amber { border-color: var(--amber); }

.problem-icon {
  font-size: 36px;
  flex-shrink: 0;
  line-height: 1;
}
.problem-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 8px;
}
.problem-desc {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray);
  line-height: 1.5;
}

.amber-callout {
  background: rgba(255,179,0,0.08);
  border: 1px solid rgba(255,179,0,0.3);
  border-radius: 8px;
  padding: 16px 24px;
  display: flex; align-items: center; gap: 14px;
  font-size: 18px;
  font-weight: 700;
  color: var(--amber);
  flex-shrink: 0;
}
.callout-icon { font-size: 24px; }

/* ═══════════════════════════════════════════════════════════
   SLIDE 3 — SOLUTION
═══════════════════════════════════════════════════════════ */
.pipeline-container {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  flex-shrink: 0;
}
.pipeline-label {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 3px;
  margin-bottom: 14px;
}
.pipeline {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
}
.pipe-box {
  flex: 1;
  min-width: 90px;
  padding: 14px 10px;
  border-radius: 8px;
  text-align: center;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.5px;
  line-height: 1.3;
  border: 2px solid;
}
.cyan-box  { border-color: var(--cyan);  color: var(--cyan);  background: rgba(0,245,255,0.07); }
.green-box { border-color: var(--green); color: var(--green); background: rgba(57,255,20,0.07); }
.amber-box { border-color: var(--amber); color: var(--amber); background: rgba(255,179,0,0.07); }
.pipe-arrow { color: var(--gray); font-size: 20px; flex-shrink: 0; }

.solution-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  flex: 1;
}
.sol-card {
  background: var(--card-bg);
  border-radius: 10px;
  border: 2px solid;
  padding: 24px 20px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 12px;
}
.sol-icon { font-size: 40px; }
.sol-title { font-size: 18px; font-weight: 900; letter-spacing: 1px; }
.sol-desc { font-size: 15px; font-weight: 700; color: var(--gray); line-height: 1.5; font-family: 'Space Mono', monospace; }

/* ═══════════════════════════════════════════════════════════
   SLIDE 4 — TECH STACK
═══════════════════════════════════════════════════════════ */
.tech-columns {
  display: flex; gap: 0;
  flex: 1;
  overflow: hidden;
}
.tech-col {
  flex: 1;
  display: flex; flex-direction: column; gap: 10px;
  padding: 0 20px;
}
.tech-col:first-child { padding-left: 0; }
.tech-col:last-child  { padding-right: 0; }
.tech-col-header {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.tech-item {
  background: var(--card-bg);
  border-left: 3px solid;
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  display: flex; flex-direction: column; gap: 4px;
}
.tech-name { font-size: 18px; font-weight: 900; color: var(--white); }
.tech-desc { font-size: 13px; color: var(--gray); }
.tech-divider {
  width: 1px;
  background: var(--border);
  margin: 0 8px;
  flex-shrink: 0;
}
.code-strip {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 1px;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 5 — ARCHITECTURE
═══════════════════════════════════════════════════════════ */
.arch-tiers {
  display: flex; flex-direction: column; gap: 0;
  flex: 1;
  justify-content: center;
}
.arch-tier {
  border-radius: 8px;
  border: 2px solid;
  padding: 12px 20px;
  background: var(--card-bg);
}
.tier-cyan  { border-color: var(--cyan); }
.tier-amber { border-color: var(--amber); }
.tier-green { border-color: var(--green); }
.tier-gray  { border-color: #333; }

.tier-label {
  font-size: 12px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.tier-content {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.tier-main {
  font-size: 18px;
  font-weight: 900;
  color: var(--white);
  flex-shrink: 0;
}
.tier-chips {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.chip {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 13px;
  font-family: 'Space Mono', monospace;
  color: var(--gray);
}
.tier-arrow {
  text-align: center;
  color: var(--gray);
  font-size: 18px;
  line-height: 1.2;
}
.tier-pipeline-small {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.tps {
  background: rgba(57,255,20,0.08);
  border: 1px solid rgba(57,255,20,0.3);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 13px;
  font-family: 'Space Mono', monospace;
  color: var(--green);
}
.tpa { color: var(--gray); font-size: 14px; }

/* ═══════════════════════════════════════════════════════════
   SLIDE 6 — DETECTION
═══════════════════════════════════════════════════════════ */
.two-col-layout {
  display: flex; gap: 24px;
  flex: 1;
  overflow: hidden;
}
.col-left  { flex: 1.1; display: flex; flex-direction: column; }
.col-right { flex: 0.9; display: flex; flex-direction: column; gap: 12px; }

.mock-dashboard {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  display: flex; flex-direction: column;
}
.mock-header {
  background: #0a0a12;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--gray);
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.green-dot  { background: var(--green); box-shadow: 0 0 8px var(--green); animation: pulse 2s infinite; }
.amber-dot  { background: var(--amber); }

.mock-video {
  flex: 1;
  background: #080810;
  position: relative;
  overflow: hidden;
}
.mock-video-inner {
  width: 100%; height: 100%;
  position: relative;
  background: 
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.03) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.03) 40px);
}
.bbox {
  position: absolute;
  border: 2px solid;
  border-radius: 2px;
}
.bbox-car   { border-color: var(--cyan); }
.bbox-truck { border-color: var(--amber); }
.bbox-bus   { border-color: var(--green); }
.bbox-label {
  position: absolute;
  top: -22px; left: 0;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  background: rgba(0,0,0,0.8);
  padding: 2px 6px;
  white-space: nowrap;
  color: var(--white);
}
.roi-overlay {
  position: absolute;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  color: rgba(255,179,0,0.8);
  background: rgba(255,179,0,0.05);
  border: 1px dashed rgba(255,179,0,0.4);
  padding: 2px 6px;
}
.roi-north { top: 5%; left: 35%; }
.roi-south { bottom: 5%; left: 35%; }

.mock-stats-row {
  background: #0a0a12;
  padding: 8px 16px;
  font-size: 12px;
  color: var(--cyan);
  display: flex; gap: 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.stat-card {
  background: var(--card-bg);
  border: 2px solid;
  border-radius: 10px;
  padding: 14px 18px;
  flex-shrink: 0;
}
.stat-num   { font-size: 40px; font-weight: 900; line-height: 1; }
.stat-label { font-size: 14px; font-weight: 900; letter-spacing: 1px; color: var(--white); margin-top: 4px; }
.stat-sub   { font-size: 12px; color: var(--gray); margin-top: 4px; }

.code-block {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 12px;
  color: var(--cyan);
  line-height: 1.8;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 7 — SIGNAL CONTROL
═══════════════════════════════════════════════════════════ */
.signal-panel {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  display: flex; flex-direction: column;
}
.signal-panel-header {
  background: #0a0a12;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--gray);
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.intersection-viz {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  padding: 16px;
  gap: 12px;
}
.signal-block {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex; flex-direction: column; gap: 6px;
  align-items: center;
}
.signal-light {
  width: 28px; height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
}
.green-light { background: var(--green); box-shadow: 0 0 16px var(--green); }
.red-light   { background: #ff3333; box-shadow: 0 0 10px rgba(255,50,50,0.4); }
.yellow-light{ background: var(--amber); box-shadow: 0 0 12px var(--amber); }
.signal-dir  { font-size: 12px; color: var(--gray); letter-spacing: 2px; }
.signal-timer{ font-size: 22px; color: var(--white); }
.load-bar {
  width: 100%; height: 6px;
  background: #1a1a2a;
  border-radius: 3px;
  overflow: hidden;
}
.load-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  border-radius: 3px;
  transition: width 1s ease;
}
.load-pct { font-size: 11px; color: var(--gray); }
.phase-seq {
  background: #0a0a12;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--cyan);
  text-align: center;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.signal-table {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.sig-table-header {
  display: grid; grid-template-columns: 1fr 1fr;
  background: #0a0a12;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.sig-table-row {
  display: grid; grid-template-columns: 1fr 1fr;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
}
.sig-table-row:last-child { border-bottom: none; }

.formula-box {
  background: rgba(0,245,255,0.05);
  border: 1px solid rgba(0,245,255,0.2);
  border-radius: 8px;
  padding: 14px 16px;
  flex-shrink: 0;
}
.formula-label { font-size: 11px; letter-spacing: 2px; margin-bottom: 8px; }
.formula { font-size: 14px; color: var(--white); line-height: 1.6; }

/* ═══════════════════════════════════════════════════════════
   SLIDE 8 — ROI
═══════════════════════════════════════════════════════════ */
.roi-panel {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  display: flex; flex-direction: column;
}
.roi-panel-header {
  background: #0a0a12;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--gray);
  border-bottom: 1px solid var(--border);
  letter-spacing: 2px;
  flex-shrink: 0;
}
.roi-lanes {
  display: flex; gap: 8px;
  padding: 12px 16px;
  flex-shrink: 0;
}
.roi-lane-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 12px;
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--gray);
  cursor: pointer;
}
.active-lane {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0,245,255,0.08);
}
.roi-video-preview {
  flex: 1;
  padding: 8px 16px;
}
.roi-svg { width: 100%; height: 100%; }
.roi-actions {
  display: flex; gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.roi-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--gray);
  cursor: pointer;
}

.roi-steps {
  display: flex; flex-direction: column; gap: 12px;
  flex: 1;
}
.roi-step {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--card-bg);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
}
.step-num {
  font-family: 'Space Mono', monospace;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1.2;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 9 — ANALYTICS
═══════════════════════════════════════════════════════════ */
.analytics-panel {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  flex: 1;
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden;
}
.analytics-header {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 1px;
}
.chart-mock { flex-shrink: 0; }
.chart-svg { width: 100%; }
.road-analysis {
  display: flex; flex-direction: column; gap: 8px;
  flex-shrink: 0;
}
.road-row {
  display: flex; align-items: center; gap: 10px;
}
.road-bar {
  flex: 1;
  height: 8px;
  background: #1a1a2a;
  border-radius: 4px;
  overflow: hidden;
}
.road-fill {
  height: 100%;
  border-radius: 4px;
}

.analytics-endpoints {
  display: flex; flex-direction: column; gap: 8px;
  flex-shrink: 0;
}
.endpoint-item {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--cyan);
}
.info-cards-small {
  display: flex; gap: 10px;
  flex-shrink: 0;
}
.info-small {
  flex: 1;
  background: var(--card-bg);
  border: 2px solid;
  border-radius: 8px;
  padding: 12px 14px;
  text-align: center;
}
.info-small-title { font-size: 12px; color: var(--gray); letter-spacing: 1px; margin-bottom: 6px; }
.info-small-val   { font-size: 15px; color: var(--white); }

/* ═══════════════════════════════════════════════════════════
   SLIDE 10 — ALERTS
═══════════════════════════════════════════════════════════ */
.alert-panel {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  display: flex; flex-direction: column;
}
.alert-tabs {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.alert-tab {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--gray);
  border-right: 1px solid var(--border);
  letter-spacing: 1px;
}
.active-tab { color: var(--amber); background: rgba(255,179,0,0.06); }
.tab-red    { color: #ff5555; }
.tab-amber  { color: var(--amber); }
.tab-green  { color: var(--green); }

.alert-card {
  margin: 12px;
  border-radius: 8px;
  padding: 14px 16px;
  border: 1px solid;
  display: flex; flex-direction: column; gap: 6px;
}
.alert-medium  { border-color: rgba(255,179,0,0.4); background: rgba(255,179,0,0.05); }
.alert-resolved{ border-color: rgba(57,255,20,0.3); background: rgba(57,255,20,0.04); }
.alert-card-header { display: flex; align-items: center; justify-content: space-between; }
.alert-badge {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 1px;
}
.amber-badge { background: rgba(255,179,0,0.2); color: var(--amber); }
.green-badge { background: rgba(57,255,20,0.15); color: var(--green); }
.alert-time  { font-size: 12px; color: var(--gray); }
.alert-title { font-size: 18px; font-weight: 900; color: var(--white); }
.alert-msg   { font-size: 13px; color: var(--gray); }
.alert-action{ font-size: 12px; color: var(--amber); }

.alert-type-card {
  background: var(--card-bg);
  border: 2px solid;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex; align-items: center; gap: 14px;
  flex-shrink: 0;
}
.alert-type-icon { font-size: 28px; flex-shrink: 0; }
.alert-type-title { font-size: 18px; font-weight: 900; letter-spacing: 1px; margin-bottom: 4px; }
.alert-type-desc  { font-size: 14px; font-weight: 700; color: var(--gray); line-height: 1.4; }

.cyan-callout-small {
  background: rgba(0,245,255,0.06);
  border: 1px solid rgba(0,245,255,0.2);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--cyan);
  line-height: 1.5;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 11 — DATABASE
═══════════════════════════════════════════════════════════ */
.db-container {
  flex: 1;
  display: flex; flex-direction: column; gap: 16px;
  overflow: hidden;
}
.db-table-title {
  font-size: 14px;
  letter-spacing: 3px;
}
.db-table {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.db-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.3fr 2fr;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  align-items: center;
}
.db-row:last-child { border-bottom: none; }
.db-header-row {
  background: #0a0a12;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--gray);
}
.db-alt { background: rgba(255,255,255,0.02); }
.db-col { padding-right: 12px; }

.sql-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  flex-shrink: 0;
}
.sql-block {
  background: #050508;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
}
.sql-label { font-size: 11px; letter-spacing: 2px; margin-bottom: 8px; }
.sql-code  { font-size: 13px; color: var(--white); line-height: 1.8; }

.db-callout {
  background: rgba(57,255,20,0.05);
  border: 1px solid rgba(57,255,20,0.2);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--green);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 12 — TESTING
═══════════════════════════════════════════════════════════ */
.test-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  flex: 1;
}
.test-card {
  background: var(--card-bg);
  border: 2px solid;
  border-radius: 10px;
  padding: 16px 14px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 8px;
}
.test-icon  { font-size: 28px; }
.test-score { font-size: 32px; font-weight: 900; line-height: 1; }
.test-badge {
  background: rgba(57,255,20,0.15);
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 2px;
}
.test-area   { font-size: 14px; font-weight: 900; color: var(--white); letter-spacing: 0.5px; }
.test-detail { font-size: 12px; color: var(--gray); line-height: 1.4; }

.pass-rate-banner {
  background: rgba(255,179,0,0.06);
  border: 2px solid rgba(255,179,0,0.3);
  border-radius: 10px;
  padding: 16px 24px;
  display: flex; align-items: center; gap: 20px;
  flex-shrink: 0;
}
.pass-rate-num   { font-size: 56px; font-weight: 900; line-height: 1; }
.pass-rate-label { font-size: 22px; font-weight: 900; letter-spacing: 2px; color: var(--white); }

.test-note {
  font-size: 13px;
  color: var(--gray);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 13 — FUTURE SCOPE
═══════════════════════════════════════════════════════════ */
.future-columns {
  display: flex; gap: 0;
  flex: 1;
  overflow: hidden;
}
.future-col {
  flex: 1;
  display: flex; flex-direction: column; gap: 10px;
  padding: 0 20px;
  overflow: hidden;
}
.future-col:first-child { padding-left: 0; }
.future-col:last-child  { padding-right: 0; }
.future-col-header {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 2px;
  margin-bottom: 6px;
  flex-shrink: 0;
}
.future-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  flex-shrink: 0;
}
.limit-item   { background: rgba(255,85,85,0.06);  border: 1px solid rgba(255,85,85,0.15); color: #ffaaaa; }
.enhance-item { background: rgba(0,245,255,0.04);  border: 1px solid rgba(0,245,255,0.12); color: var(--white); }
.future-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.future-divider {
  width: 1px;
  background: var(--border);
  margin: 0 8px;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE 14 — CONCLUSION
═══════════════════════════════════════════════════════════ */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 14px;
  flex: 1;
}
.ach-card {
  background: var(--card-bg);
  border: 2px solid;
  border-radius: 10px;
  padding: 18px 16px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 10px;
}
.ach-icon  { font-size: 36px; }
.ach-title { font-size: 16px; font-weight: 900; letter-spacing: 1px; }
.ach-desc  { font-size: 14px; font-weight: 700; color: var(--gray); line-height: 1.4; }

.conclusion-statement {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 18px 28px;
  font-size: 22px;
  font-weight: 900;
  color: var(--white);
  text-align: center;
  line-height: 1.4;
  flex-shrink: 0;
}

.final-stack {
  text-align: center;
  font-size: 14px;
  color: var(--cyan);
  letter-spacing: 1px;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE ADJUSTMENTS
═══════════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
  .slide-heading { font-size: 28px; }
  .nabla-title   { font-size: clamp(36px, 5.5vw, 72px); }
  .test-grid     { grid-template-columns: repeat(3, 1fr); }
}