/* ==========================================================================
   CYVORA STUDIO — DATA ENGINEER ROADMAP STYLESHEET
   File: /Career_tips/Roadmaps/Data-engineer/data-engineer-roadmap.css
   Theme: Big Data Lakehouse & Stream Spectrum • Blaze Amber / Aqua / Indigo
   ========================================================================== */

:root {
  /* Canvas & Obsidian Surfaces (Industrial Lakehouse Navy/Slate) */
  --background: #080c16;
  --foreground: #f8fafc;
  --card: #0e1526;
  --card-hover: #141e34;
  --card-foreground: #f8fafc;
  --muted: #162038;
  --muted-foreground: #94a3b8;
  --border: rgba(249, 115, 22, 0.24);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(251, 146, 60, 0.55);

  /* Primary: Vibrant Blaze Amber & High-Throughput Flame */
  --primary: #f97316;
  --primary-light: #fb923c;
  --primary-glow: rgba(249, 115, 22, 0.25);
  --primary-glow-heavy: rgba(249, 115, 22, 0.45);
  --primary-foreground: #030712;

  /* Data Engineering Pipeline Spectrum Colors */
  --pipeline-orange: #f97316;
  --pipeline-amber: #f59e0b;
  --pipeline-gold: #fbbf24;
  --pipeline-cyan: #06b6d4;
  --pipeline-teal: #14b8a6;
  --pipeline-blue: #3b82f6;
  --pipeline-indigo: #6366f1;
  --pipeline-violet: #8b5cf6;
  --pipeline-emerald: #10b981;
  --pipeline-mint: #34d399;
  --pipeline-rose: #f43f5e;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

body {
  background-color: var(--background);
  background-image: 
    radial-gradient(ellipse 75% 45% at 15% 0%, rgba(249, 115, 22, 0.13) 0%, transparent 60%),
    radial-gradient(ellipse 65% 40% at 85% 10%, rgba(6, 182, 212, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 30% at 50% 55%, rgba(99, 102, 241, 0.08) 0%, transparent 65%);
  background-attachment: fixed;
  color: var(--foreground);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   1. Floating Navigation Bar (Adjusted: Sleek & Overlap-Free)
   ========================================================================== */
.floating-nav {
  position: fixed;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 8px;
  background: rgba(14, 21, 38, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(249, 115, 22, 0.32);
  border-radius: 40px;
  z-index: 1000;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.65), 0 0 20px rgba(249, 115, 22, 0.18);
  transition: all var(--transition-normal);
}

.floating-nav:hover {
  border-color: rgba(251, 146, 60, 0.55);
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.75), 0 0 28px rgba(249, 115, 22, 0.3);
}

.nav-logo {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f97316 0%, #06b6d4 100%);
  color: #ffffff;
  font-weight: 800;
  font-size: 1.15rem;
  border-radius: 50%;
  margin-bottom: 6px;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-logo:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 22px rgba(251, 146, 60, 0.5);
}

.nav-logo svg {
  width: 22px;
  height: 22px;
  display: block;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-link {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(249, 115, 22, 0.2);
  transform: scale(1.08);
}

.nav-link.active {
  color: #fb923c;
  background: rgba(249, 115, 22, 0.18);
  border: 1px solid rgba(251, 146, 60, 0.38);
  box-shadow: 0 0 14px rgba(249, 115, 22, 0.35);
}

.nav-link[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%);
  padding: 6px 14px;
  background: #0e1526;
  border: 1px solid rgba(249, 115, 22, 0.3);
  color: #f8fafc;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  border-radius: 8px;
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  pointer-events: none;
}

.nav-link:hover[data-tooltip]::after {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   2. Container Layout & Margin Clearance (NO CONTENT OVERLAP)
   ========================================================================== */
.roadmap-shell {
  max-width: 1400px;
  margin-left: 104px; /* Clearance leaves ample space for floating nav */
  margin-right: auto;
  padding: 0 36px 80px 16px;
  box-sizing: border-box;
}

@media (min-width: 1680px) {
  .roadmap-shell {
    margin-left: auto;
    margin-right: auto;
    padding-left: 104px;
    padding-right: 48px;
  }
}

@media (max-width: 768px) {
  .roadmap-shell {
    margin-left: 0;
    margin-right: 0;
    padding: 0 16px 110px;
  }
  
  .floating-nav {
    left: 50%;
    top: auto;
    bottom: 16px;
    transform: translateX(-50%);
    flex-direction: row;
    padding: 8px 14px;
    border-radius: 30px;
    gap: 8px;
    max-width: 92vw;
    overflow-x: auto;
  }

  .nav-logo {
    width: 34px;
    height: 34px;
    margin-bottom: 0;
    margin-right: 4px;
  }

  .nav-link {
    width: 36px;
    height: 36px;
  }

  .nav-link[data-tooltip]::after {
    display: none;
  }
}

/* ==========================================================================
   3. Breadcrumb
   ========================================================================== */
.hub-breadcrumb {
  margin: 20px 0 12px;
  color: var(--muted-foreground);
  font-size: 0.88rem;
}

.hub-breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.hub-breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: rgba(249, 115, 22, 0.35);
}

.hub-breadcrumb a {
  color: var(--muted-foreground);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.hub-breadcrumb a:hover {
  color: #fb923c;
}

.hub-breadcrumb li[aria-current="page"] {
  color: #f8fafc;
  font-weight: 600;
}

/* ==========================================================================
   4. Hero Section (Data Engineer Pipeline Theme)
   ========================================================================== */
.roadmap-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(320px, 0.85fr);
  gap: 28px;
  align-items: stretch;
  padding: 24px 0 28px;
  position: relative;
}

.roadmap-hero-copy,
.roadmap-hero-panel,
.info-card,
.timeline-month,
.skill-node,
.resource-card,
.project-card,
.cert-card,
.qa-item,
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 1;
}

.roadmap-hero-copy {
  padding: 38px 42px;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(20, 30, 52, 0.9) 0%, rgba(14, 21, 38, 0.96) 100%);
  border-color: rgba(249, 115, 22, 0.32);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(249, 115, 22, 0.12);
  border: 1px solid rgba(249, 115, 22, 0.38);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fb923c;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
  width: fit-content;
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.2);
}

.hero-eyebrow::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fb923c;
  box-shadow: 0 0 8px #fb923c;
}

.roadmap-hero h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  color: #ffffff;
}

.roadmap-hero h1 span {
  background: linear-gradient(135deg, #fb923c 0%, #06b6d4 50%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  filter: drop-shadow(0 0 25px rgba(249, 115, 22, 0.4));
}

.hero-subtitle {
  font-size: 1.1rem;
  color: #94a3b8;
  line-height: 1.65;
  margin: 0 0 28px;
  max-width: 680px;
}

/* ==========================================================================
   5. Hero Stats Bento Grid
   ========================================================================== */
.hero-stats {
  display: grid;
  gap: 12px;
  margin: 0 0 32px;
}

.engineer-stats {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.stat-card {
  border-radius: 12px;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all var(--transition-normal);
  background: rgba(14, 21, 38, 0.85);
  border: 1px solid var(--border-subtle);
}

.stat-card:hover {
  transform: translateY(-3px);
}

.stat-card strong {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-card span {
  font-size: 0.76rem;
  color: var(--muted-foreground);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-difficulty {
  border-color: rgba(249, 115, 22, 0.35);
  background: linear-gradient(180deg, rgba(249, 115, 22, 0.12) 0%, rgba(14, 21, 38, 0.9) 100%);
}
.stat-difficulty strong { color: #fb923c; }

.stat-time {
  border-color: rgba(6, 182, 212, 0.35);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.12) 0%, rgba(14, 21, 38, 0.9) 100%);
}
.stat-time strong { color: #22d3ee; }

.stat-demand {
  border-color: rgba(16, 185, 129, 0.35);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.12) 0%, rgba(14, 21, 38, 0.9) 100%);
}
.stat-demand strong { color: #34d399; }

.stat-salary {
  border-color: rgba(251, 191, 36, 0.35);
  background: linear-gradient(180deg, rgba(251, 191, 36, 0.12) 0%, rgba(14, 21, 38, 0.9) 100%);
}
.stat-salary strong { color: #fbbf24; }

.stat-stack {
  border-color: rgba(99, 102, 241, 0.35);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.12) 0%, rgba(14, 21, 38, 0.9) 100%);
}
.stat-stack strong { color: #a5b4fc; font-size: 0.92rem; }

/* Quick Action Buttons */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: auto;
}

.btn-primary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: #ffffff;
  padding: 13px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid rgba(251, 146, 60, 0.4);
  box-shadow: 0 4px 18px rgba(249, 115, 22, 0.4);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.btn-primary-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(249, 115, 22, 0.55);
  color: #ffffff;
}

.btn-secondary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(22, 32, 56, 0.7);
  color: #f8fafc;
  padding: 13px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-secondary-action:hover {
  background: rgba(30, 44, 78, 0.9);
  border-color: rgba(251, 146, 60, 0.4);
  transform: translateY(-2px);
}

/* ==========================================================================
   6. Hero Right Panel: Live Pipeline Telemetry Card
   ========================================================================== */
.roadmap-hero-panel {
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(20, 28, 50, 0.95) 0%, rgba(10, 15, 30, 0.98) 100%);
  border-color: rgba(249, 115, 22, 0.3);
}

.panel-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.panel-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-header p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--muted-foreground);
}

.metric-bar-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 22px;
}

.metric-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
}

.metric-name {
  color: #cbd5e1;
  font-weight: 600;
}

.metric-val {
  font-weight: 700;
}

.metric-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  position: relative;
}

.metric-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fill-orange { background: linear-gradient(90deg, #f97316, #fb923c); }
.fill-cyan { background: linear-gradient(90deg, #06b6d4, #22d3ee); }
.fill-indigo { background: linear-gradient(90deg, #6366f1, #818cf8); }
.fill-emerald { background: linear-gradient(90deg, #10b981, #34d399); }

.pipeline-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 16px;
  background: rgba(8, 12, 22, 0.7);
  border: 1px solid rgba(249, 115, 22, 0.2);
  border-radius: 12px;
  margin-bottom: 18px;
}

.pipeline-pill {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(249, 115, 22, 0.12);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.pipeline-pill.pill-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: #22d3ee;
  border-color: rgba(6, 182, 212, 0.3);
}

.pipeline-pill.pill-indigo {
  background: rgba(99, 102, 241, 0.12);
  color: #818cf8;
  border-color: rgba(99, 102, 241, 0.3);
}

.panel-callout {
  padding: 14px 16px;
  background: rgba(249, 115, 22, 0.08);
  border: 1px solid rgba(249, 115, 22, 0.25);
  border-radius: 12px;
  font-size: 0.82rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-callout svg {
  color: #fb923c;
  flex-shrink: 0;
}

/* ==========================================================================
   7. Overall Progress Card
   ========================================================================== */
.roadmap-progress-card {
  margin: 18px 0 28px;
  padding: 22px 28px;
  background: linear-gradient(135deg, rgba(20, 30, 54, 0.75) 0%, rgba(14, 21, 38, 0.85) 100%);
  border: 1px solid rgba(249, 115, 22, 0.3);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.progress-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-header .badge-total {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.15);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.35);
}

.overall-track {
  height: 12px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.overall-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f97316 0%, #06b6d4 50%, #10b981 100%);
  border-radius: 999px;
  transition: width 0.4s ease;
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.6);
}

.progress-meta-text {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  margin: 0;
}

/* ==========================================================================
   8. Sticky Section Navigation
   ========================================================================== */
.roadmap-sticky-nav {
  position: sticky;
  top: 18px;
  z-index: 100;
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(14, 21, 38, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(249, 115, 22, 0.28);
  border-radius: 14px;
  margin-bottom: 36px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  overflow-x: auto;
}

.roadmap-sticky-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 600;
  color: #94a3b8;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.roadmap-sticky-nav a:hover {
  color: #ffffff;
  background: rgba(249, 115, 22, 0.16);
}

.roadmap-sticky-nav a.is-active {
  color: #030712;
  background: #fb923c;
  box-shadow: 0 0 16px rgba(251, 146, 60, 0.45);
}

/* ==========================================================================
   9. Section Headings
   ========================================================================== */
.section-block {
  margin-bottom: 64px;
}

.section-head {
  margin-bottom: 28px;
}

.section-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fb923c;
  display: inline-block;
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 0.98rem;
  color: var(--muted-foreground);
  margin: 0;
  max-width: 820px;
}

/* ==========================================================================
   10. 12-Month Interactive Timeline
   ========================================================================== */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.timeline-month {
  padding: 30px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all var(--transition-normal);
  background: linear-gradient(180deg, rgba(16, 25, 46, 0.85) 0%, rgba(10, 16, 30, 0.95) 100%);
  border-color: rgba(249, 115, 22, 0.22);
}

.timeline-month:hover {
  border-color: rgba(251, 146, 60, 0.45);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.65), 0 0 24px rgba(249, 115, 22, 0.12);
}

.timeline-month.is-complete {
  border-color: rgba(249, 115, 22, 0.6);
  background: linear-gradient(180deg, rgba(249, 115, 22, 0.1) 0%, rgba(10, 16, 30, 0.95) 100%);
}

.month-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 18px;
}

.month-meta-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.month-number-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 8px;
  background: rgba(249, 115, 22, 0.14);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.35);
  width: fit-content;
}

.month-topbar h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.month-subtitle {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  margin: 0;
}

.month-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-complete-toggle {
  padding: 9px 20px;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: 10px;
  border: 1px solid rgba(249, 115, 22, 0.35);
  background: rgba(249, 115, 22, 0.1);
  color: #fb923c;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-complete-toggle:hover {
  background: rgba(249, 115, 22, 0.22);
  border-color: #fb923c;
  transform: translateY(-1px);
}

.btn-complete-toggle.is-complete {
  background: #f97316;
  color: #030712;
  border-color: #fb923c;
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.4);
}

.month-progress-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.month-progress-track {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.month-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f97316, #fb923c);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.month-progress-text {
  font-size: 0.8rem;
  font-weight: 700;
  color: #fb923c;
  min-width: 40px;
  text-align: right;
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

@media (max-width: 860px) {
  .month-grid {
    grid-template-columns: 1fr;
  }
}

.week-card {
  padding: 18px 20px;
  border-radius: 12px;
  background: rgba(9, 14, 28, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.week-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #22d3ee;
}

.week-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f8fafc;
  margin: 0;
}

.week-card p {
  font-size: 0.86rem;
  color: #94a3b8;
  margin: 0;
  line-height: 1.55;
}

.week-card ul {
  margin: 4px 0 0;
  padding-left: 18px;
  font-size: 0.84rem;
  color: #cbd5e1;
}

.week-card li {
  margin-bottom: 4px;
}

.month-deliverable {
  margin-top: 6px;
  padding: 14px 20px;
  background: rgba(249, 115, 22, 0.08);
  border: 1px solid rgba(249, 115, 22, 0.28);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.deliverable-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.deliverable-text strong {
  color: #fb923c;
  font-size: 0.9rem;
}

.deliverable-text p {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: #cbd5e1;
}

/* ==========================================================================
   11. Skill Matrix Tabs
   ========================================================================== */
.tab-shell {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tab-list {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 12px;
  overflow-x: auto;
}

.tab-button {
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #94a3b8;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-button:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.tab-button.is-active {
  color: #030712;
  background: #fb923c;
  border-color: #fb923c;
  box-shadow: 0 0 16px rgba(251, 146, 60, 0.4);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.skill-node {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, rgba(16, 25, 46, 0.85) 0%, rgba(10, 16, 30, 0.95) 100%);
  border-color: rgba(249, 115, 22, 0.2);
  transition: all var(--transition-normal);
}

.skill-node:hover {
  transform: translateY(-3px);
  border-color: rgba(251, 146, 60, 0.45);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-node h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.skill-level-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(249, 115, 22, 0.15);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.skill-desc {
  font-size: 0.86rem;
  color: #94a3b8;
  margin: 0;
  line-height: 1.55;
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.skill-pill {
  font-size: 0.75rem;
  padding: 3px 9px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   12. Resources & Checklists
   ========================================================================== */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.resource-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-color: rgba(249, 115, 22, 0.22);
}

.resource-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.resource-checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
}

.checklist-item input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid rgba(249, 115, 22, 0.4);
  background: rgba(14, 21, 38, 0.9);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 3px;
  position: relative;
  transition: all var(--transition-fast);
}

.checklist-item input[type="checkbox"]:checked {
  background: #f97316;
  border-color: #fb923c;
}

.checklist-item input[type="checkbox"]:checked::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #030712;
  font-weight: 900;
  font-size: 12px;
}

.checklist-item label {
  cursor: pointer;
  line-height: 1.45;
}

.checklist-item a {
  color: #22d3ee;
  text-decoration: none;
  font-weight: 600;
}

.checklist-item a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   13. Industry Certifications
   ========================================================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.cert-card {
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-color: rgba(6, 182, 212, 0.25);
  background: linear-gradient(180deg, rgba(16, 25, 46, 0.85) 0%, rgba(10, 16, 30, 0.95) 100%);
}

.cert-badge {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.35);
  width: fit-content;
}

.cert-card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.cert-provider {
  font-size: 0.85rem;
  color: #fb923c;
  font-weight: 600;
}

.cert-desc {
  font-size: 0.86rem;
  color: #94a3b8;
  margin: 0;
  line-height: 1.55;
}

.cert-meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #cbd5e1;
}

/* ==========================================================================
   14. High-Impact Portfolio Projects
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-color: rgba(249, 115, 22, 0.25);
  background: linear-gradient(180deg, rgba(16, 26, 48, 0.88) 0%, rgba(10, 16, 30, 0.95) 100%);
  transition: all var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(251, 146, 60, 0.5);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.65), 0 0 20px rgba(249, 115, 22, 0.15);
}

.project-tag {
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(249, 115, 22, 0.14);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.3);
  width: fit-content;
}

.project-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.project-card p {
  font-size: 0.88rem;
  color: #94a3b8;
  margin: 0;
  line-height: 1.55;
}

.project-features {
  padding-left: 18px;
  margin: 4px 0 0;
  font-size: 0.84rem;
  color: #cbd5e1;
}

.project-features li {
  margin-bottom: 5px;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 14px;
}

.project-pill {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(251, 146, 60, 0.12);
  color: #fb923c;
  border: 1px solid rgba(251, 146, 60, 0.25);
}

/* ==========================================================================
   15. Interview Mastery & Q&A
   ========================================================================== */
.qa-grid {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.qa-item {
  padding: 24px 28px;
  border-color: rgba(249, 115, 22, 0.2);
}

.qa-question {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.qa-question .q-badge {
  font-size: 0.76rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(249, 115, 22, 0.2);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.4);
  flex-shrink: 0;
  margin-top: 3px;
}

.qa-answer {
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0;
}

.qa-code {
  margin: 12px 0 0;
  padding: 14px 18px;
  background: rgba(6, 10, 20, 0.85);
  border: 1px solid rgba(249, 115, 22, 0.25);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  color: #22d3ee;
  overflow-x: auto;
}

/* ==========================================================================
   16. FAQ Section
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border-color: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item summary {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: #fb923c;
  font-weight: 400;
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item[open] {
  border-color: rgba(249, 115, 22, 0.35);
}

.faq-answer {
  padding: 0 22px 20px;
  font-size: 0.9rem;
  color: #94a3b8;
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   17. Footer & Back Link
   ========================================================================== */
.roadmap-footer {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted-foreground);
  font-size: 0.88rem;
}

.roadmap-footer a {
  color: #fb923c;
  text-decoration: none;
  font-weight: 600;
}

.roadmap-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 900px) {
  .roadmap-hero {
    grid-template-columns: 1fr;
  }

  .engineer-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}