/* ============================================================ */
/* WAIproger — ai-course.css                                   */
/* AI Course page specific styles                              */
/* Extends b.css — import b.css FIRST                         */
/* ============================================================ */

/* ============================================================ */
/* HEADER BREADCRUMB                                           */
/* ============================================================ */
.header-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.header-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.25s;
}
.header-breadcrumb a:hover { color: var(--g-bright); }
.bc-sep { color: var(--border-hot); }
.bc-current { color: var(--g-bright); }

/* ============================================================ */
/* AI HERO                                                      */
/* ============================================================ */
.ai-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  z-index: 10;
}

.ai-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

/* Badge */
.ai-course-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--border-hot);
  border-radius: 40px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--g-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 28px;
  background: rgba(168,255,62,0.05);
}
.ai-badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--g-bright);
  animation: dotBlink 2s ease-in-out infinite;
  box-shadow: 0 0 8px var(--g-glow);
}
@keyframes dotBlink { 0%,100%{opacity:1; transform:scale(1)} 50%{opacity:0.4; transform:scale(0.8)} }
.ai-badge-sep { color: var(--border-hot); }

/* Hero title */
.ai-hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 28px;
  color: var(--text-bright);
}
.ai-title-gradient {
  background: linear-gradient(135deg, var(--g-bright) 0%, var(--g-soft) 40%, var(--birch-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ai-title-sub {
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  font-weight: 400;
  color: var(--text-mid);
  letter-spacing: -1px;
}
.ai-title-accent {
  font-style: italic;
  color: var(--birch-2);
}

.ai-hero-desc {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: 40px;
}

/* Hero CTA */
.ai-hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Hero stats */
.ai-hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.ai-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ai-stat-n {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--g-bright), var(--birch-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.ai-stat-l {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.ai-stat-div {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* Neural Net Visual */
.ai-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.ai-neural-wrap {
  position: relative;
  width: 400px;
  height: 420px;
}
.ai-neural-svg {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 2;
}

/* Floating tags */
.ai-float-tag {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--g-bright);
  background: rgba(14,24,18,0.9);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 12px;
  letter-spacing: 1px;
  animation: floatTag 4s ease-in-out infinite;
  z-index: 3;
}
.ai-ft-1 { top: 5%;   left: -20px;  animation-delay: 0s; }
.ai-ft-2 { top: 25%;  right: -30px; animation-delay: -1s; }
.ai-ft-3 { bottom: 30%; right: -20px; animation-delay: -2s; }
.ai-ft-4 { bottom: 10%; left: 10px; animation-delay: -3s; }
@keyframes floatTag {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-10px); }
}

/* Ring decorations */
.ai-neural-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
  pointer-events: none;
  animation: ringPulse 5s ease-in-out infinite;
}
.ai-ring-1 {
  width: 340px; height: 340px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0s;
}
.ai-ring-2 {
  width: 440px; height: 440px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -2.5s;
  opacity: 0.4;
}
@keyframes ringPulse {
  0%,100% { opacity: 0.2; transform: translate(-50%,-50%) scale(1); }
  50%     { opacity: 0.5; transform: translate(-50%,-50%) scale(1.04); }
}

/* ============================================================ */
/* REALITY SECTION                                             */
/* ============================================================ */
.reality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.reality-card {
  background: var(--carbon-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s var(--ease-bounce);
}
.reality-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--g-bright), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.reality-card:hover {
  border-color: var(--border-hot);
  transform: translateY(-4px);
}
.reality-card:hover::before { opacity: 1; }

.reality-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.reality-icon {
  font-size: 2rem;
  line-height: 1;
}
.reality-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 3px;
}
.reality-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-bright);
  margin-bottom: 12px;
}
.reality-card p {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* Reality meter */
.reality-meter {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}
.rm-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  flex-shrink: 0;
}
.rm-bar {
  flex: 1;
  height: 4px;
  background: rgba(168,255,62,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.rm-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--g-bright), var(--g-mid));
  transition: width 1.5s var(--ease-smooth);
}
.rm-fill--low { background: linear-gradient(90deg, #ff6b6b, #ff8e53); }
.rm-val {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--g-bright);
}

/* Reality timeline */
.reality-timeline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}
.rt-item {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 1px;
}
.rt-done { background: rgba(168,255,62,0.1); color: var(--g-bright); border: 1px solid var(--border); }
.rt-unknown { background: rgba(168,168,168,0.1); color: var(--text-dim); border: 1px solid rgba(168,168,168,0.2); }
.rt-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.rt-line--fade {
  background: linear-gradient(90deg, var(--border), transparent);
}

/* Reality accuracy circle */
.reality-accuracy {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
}
.ra-circle {
  width: 56px; height: 56px;
  position: relative;
  flex-shrink: 0;
}
.ra-circle svg { width: 100%; height: 100%; }
.ra-circle span {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--g-bright);
}
.ra-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.4;
}

/* Reality warning box */
.reality-warning {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px 36px;
  background: rgba(168,255,62,0.03);
  border: 1px solid var(--border-hot);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.reality-warning::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--g-bright);
}
.rw-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.rw-text {
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.75;
}
.rw-accent {
  color: var(--g-bright);
  font-weight: 600;
}

/* ============================================================ */
/* TIPS / 10 RULES                                             */
/* ============================================================ */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 60px;
}

.tip-card {
  background: var(--carbon-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s var(--ease-bounce);
}
.tip-card:hover { border-color: var(--border-hot); transform: translateY(-3px); }
.tip-card--danger {
  border-color: rgba(255, 80, 80, 0.3);
}
.tip-card--danger:hover { border-color: rgba(255, 80, 80, 0.7); }

.tip-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 24px 28px;
  cursor: pointer;
  position: relative;
}
.tip-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 28px; right: 28px;
  height: 1px;
  background: var(--border);
  opacity: 0;
  transition: opacity 0.3s;
}
.tip-card.is-open .tip-header::after { opacity: 1; }

.tip-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  flex-shrink: 0;
}
.tip-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}
.tip-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-bright);
  flex: 1;
}
.tip-toggle {
  font-size: 1.4rem;
  color: var(--g-bright);
  font-weight: 300;
  flex-shrink: 0;
  transition: transform 0.3s var(--ease-bounce);
  line-height: 1;
}
.tip-card.is-open .tip-toggle { transform: rotate(45deg); }

/* Tip body */
.tip-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-smooth), padding 0.3s;
  padding: 0 28px;
}
.tip-card.is-open .tip-body {
  max-height: 600px;
  padding: 24px 28px;
}
.tip-body > p {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 16px;
}
.tip-note {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 12px;
}

/* Hack box */
.tip-hack {
  background: rgba(168,255,62,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 12px 0;
}
.tip-hack-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--g-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.tip-hack p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.6; margin: 0; }

/* Compare boxes */
.tip-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 12px 0;
}
.tc-bad, .tc-good {
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.tc-bad {
  background: rgba(255,80,80,0.05);
  border: 1px solid rgba(255,80,80,0.2);
}
.tc-good {
  background: rgba(168,255,62,0.04);
  border: 1px solid var(--border);
}
.tc-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.tc-bad-label { color: #ff6b6b; }
.tc-good-label { color: var(--g-bright); }
.tc-bad p, .tc-good p { font-size: 0.82rem; color: var(--text-mid); line-height: 1.5; margin: 0; }

/* Format chips */
.tip-formats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}
.tf-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--g-bright);
  background: rgba(168,255,62,0.08);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  letter-spacing: 1px;
  transition: background 0.25s;
}
.tf-chip:hover { background: rgba(168,255,62,0.15); }

/* Code example */
.tip-code-example {
  background: var(--carbon-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 12px 0;
}
.tce-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(168,255,62,0.04);
  border-bottom: 1px solid var(--border);
}
.tce-bar span:not(:last-child) {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(168,255,62,0.2);
}
.tce-bar span:last-child {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-left: auto;
}
.tce-body {
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mid);
  line-height: 1.8;
}
.tce-indent { padding-left: 36px; }
.tce-cmd { color: var(--g-bright); margin-right: 8px; }
.tce-key { color: var(--g-bright); }

/* Templates */
.tip-templates {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
}
.tt-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--carbon-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.tt-cmd { color: var(--g-bright); }
.tt-var { color: var(--text-dim); }

/* Danger box */
.tip-danger-box {
  background: rgba(255,80,80,0.05);
  border: 1px solid rgba(255,80,80,0.3);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.tip-danger-box span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #ff6b6b;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.tip-danger-box p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.6; margin: 0; }

.tip-allowed p {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 4px 0;
}

.tip-warning-sm {
  font-size: 0.8rem;
  color: #f5a623;
  background: rgba(245,166,35,0.07);
  border: 1px solid rgba(245,166,35,0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 10px;
  line-height: 1.5;
}

/* Checklist */
.tip-checklist {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
}
.tcl-item {
  font-size: 0.85rem;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(168,255,62,0.02);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: background 0.25s;
}
.tcl-item:hover { background: rgba(168,255,62,0.06); }

/* ============================================================ */
/* PROMPT ENGINEERING SECTION                                  */
/* ============================================================ */
.prompt-master-template {
  background: linear-gradient(135deg, rgba(14,24,18,0.9), rgba(22,32,16,0.9));
  border: 1px solid var(--border-hot);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 60px 0;
  position: relative;
  overflow: hidden;
}
.prompt-master-template::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(168,255,62,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.pmt-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.pmt-formula {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.5vw, 1.8rem);
  letter-spacing: -0.5px;
  line-height: 1.4;
  margin-bottom: 20px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.pmt-keyword {
  color: var(--text-bright);
}
.pmt-var {
  color: var(--g-bright);
  background: rgba(168,255,62,0.1);
  border: 1px dashed var(--border-hot);
  border-radius: var(--radius-sm);
  padding: 4px 16px;
  font-size: 0.9em;
}
.pmt-tip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* Roles grid */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.role-card {
  background: var(--carbon-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s var(--ease-bounce);
  position: relative;
  overflow: hidden;
}
.role-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(168,255,62,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.role-card:hover {
  border-color: var(--border-hot);
  transform: translateY(-5px);
}
.role-card:hover::after { opacity: 1; }

.role-icon-wrap {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(168,255,62,0.07);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.role-icon { font-size: 1.6rem; }
.role-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--g-bright);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.role-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-bright);
  margin-bottom: 18px;
}
.role-prompt {
  background: var(--carbon-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
}
.rp-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: rgba(168,255,62,0.03);
  border-bottom: 1px solid var(--border);
}
.rp-bar span:not(:last-child) {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(168,255,62,0.15);
}
.rp-bar span:last-child {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-left: auto;
}
.rp-body {
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--g-bright);
  line-height: 1.6;
}
.role-use {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

/* Prompt Builder */
.prompt-builder {
  background: var(--carbon-1);
  border: 1px solid var(--border-hot);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 720px;
  margin: 0 auto;
}
.pb-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(168,255,62,0.03);
}
.pb-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-bright);
}
.pb-subtitle {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 2px;
}
.pb-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.pb-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: center;
  gap: 16px;
}
.pb-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.pb-select-wrap {
  position: relative;
}
.pb-select, .pb-input {
  width: 100%;
  background: var(--carbon-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-bright);
  outline: none;
  transition: border-color 0.25s;
  appearance: none;
}
.pb-select:focus, .pb-input:focus {
  border-color: var(--border-hot);
}
.pb-input::placeholder { color: var(--text-dim); }
.pb-btn {
  background: linear-gradient(135deg, var(--g-bright), var(--g-mid));
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--carbon-0);
  cursor: pointer;
  transition: transform 0.2s var(--ease-bounce), box-shadow 0.3s;
  align-self: flex-start;
}
.pb-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(168,255,62,0.3);
}
.pb-result {
  padding: 24px 32px;
  border-top: 1px solid var(--border);
  background: rgba(168,255,62,0.02);
}
.pb-result-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.pb-result-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--g-bright);
  background: var(--carbon-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  line-height: 1.6;
  margin-bottom: 12px;
}
.pb-copy {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 7px 18px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-mid);
  cursor: pointer;
  transition: border-color 0.25s, color 0.25s;
}
.pb-copy:hover { border-color: var(--border-hot); color: var(--g-bright); }

/* ============================================================ */
/* ROADMAP                                                     */
/* ============================================================ */
.roadmap-wrap {
  margin: 60px 0;
  overflow-x: auto;
  padding-bottom: 16px;
}
.roadmap-track {
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: 800px;
  padding: 20px 0;
}

.rm-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}
.rm-step-circle {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--carbon-1);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dim);
  position: relative;
  margin-bottom: 16px;
  z-index: 2;
  transition: border-color 0.3s;
}
.rm-circle--active {
  border-color: var(--g-bright);
  color: var(--g-bright);
  background: rgba(168,255,62,0.08);
}
.rm-circle--future {
  border-color: rgba(168,255,62,0.15);
  color: rgba(168,255,62,0.3);
}
.rm-step-glow {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border);
  opacity: 0;
}
.rm-glow--active {
  border-color: var(--g-bright);
  opacity: 0.4;
  animation: glowPulse 2s ease-in-out infinite;
}
@keyframes glowPulse {
  0%,100% { transform: scale(1); opacity: 0.4; }
  50%     { transform: scale(1.3); opacity: 0; }
}
.rm-step--done .rm-step-circle {
  background: rgba(168,255,62,0.1);
  border-color: var(--g-mid);
  color: var(--g-mid);
}

.rm-step-content {
  text-align: center;
  padding: 0 12px;
}
.rm-step-content h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-bright);
  margin-bottom: 6px;
}
.rm-step-content p {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 10px;
}
.rm-step-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
}
.rm-badge--done {
  background: rgba(110,230,59,0.1);
  color: var(--g-mid);
  border: 1px solid rgba(110,230,59,0.3);
}
.rm-badge--active {
  background: rgba(168,255,62,0.12);
  color: var(--g-bright);
  border: 1px solid var(--border-hot);
}
.rm-badge--future {
  background: rgba(168,255,62,0.04);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.rm-badge--pro {
  background: rgba(240,234,216,0.07);
  color: var(--birch-2);
  border: 1px solid rgba(240,234,216,0.2);
}

.rm-connector {
  width: 80px;
  height: 2px;
  background: var(--border);
  flex-shrink: 0;
  margin-top: 26px;
  align-self: flex-start;
  position: relative;
}
.rm-conn--active {
  background: linear-gradient(90deg, var(--g-mid), var(--g-bright));
}

/* AI Quote */
.ai-quote {
  max-width: 640px;
  margin: 60px auto 0;
  text-align: center;
}
.aq-icon {
  font-size: 2rem;
  margin-bottom: 20px;
}
.ai-quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-weight: 500;
  color: var(--text-mid);
  line-height: 1.6;
  letter-spacing: -0.3px;
  margin-bottom: 16px;
}
.ai-quote blockquote strong { color: var(--g-bright); font-weight: 700; }
.ai-quote cite {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 3px;
  font-style: normal;
}

/* ============================================================ */
/* COMPARISON SECTION                                          */
/* ============================================================ */
.comparison-wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  background: var(--carbon-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 60px;
}

.comp-side {
  padding: 40px;
}
.comp-ai {
  border-right: 1px solid var(--border);
}
.comp-human {
  border-left: 1px solid var(--border);
}
.comp-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.comp-icon { font-size: 1.8rem; }
.comp-header h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-bright);
}
.comp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.comp-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-mid);
  padding: 10px 14px;
  background: rgba(168,255,62,0.02);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}
.comp-list li:hover {
  border-color: var(--border);
  background: rgba(168,255,62,0.04);
}
.comp-check {
  color: var(--g-bright);
  font-weight: 700;
  flex-shrink: 0;
}
.comp-check--human { color: var(--birch-2); }

.comp-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  gap: 12px;
}
.comp-plus {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--g-bright), var(--birch-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.comp-center-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ============================================================ */
/* CTA SECTION                                                 */
/* ============================================================ */
.ai-cta-block {
  background: linear-gradient(135deg, rgba(14,24,18,0.95) 0%, rgba(22,40,18,0.95) 100%);
  border: 1px solid var(--border-hot);
  border-radius: var(--radius-xl);
  padding: 80px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.ai-cta-bg-glow {
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(168,255,62,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.ai-cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}
.ai-cta-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--text-bright);
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin: 16px 0 24px;
}
.ai-cta-content p {
  color: var(--text-mid);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 36px;
}
.ai-cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.ai-cta-geo {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 200px;
  opacity: 0.6;
  pointer-events: none;
}

/* ============================================================ */
/* NAV ACTIVE STATE                                            */
/* ============================================================ */
.nav-link--active {
  background: rgba(168,255,62,0.07) !important;
  border-left: 2px solid var(--g-bright) !important;
}
.nav-link--active .nav-link-title {
  color: var(--g-bright) !important;
}

/* ============================================================ */
/* RESPONSIVE                                                  */
/* ============================================================ */
@media (max-width: 1100px) {
  .ai-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .ai-hero-visual { display: none; }
  .tips-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .reality-grid { grid-template-columns: 1fr; }
  .roles-grid { grid-template-columns: 1fr; }
  .comparison-wrap { grid-template-columns: 1fr; }
  .comp-ai, .comp-human { border: none; border-bottom: 1px solid var(--border); }
  .comp-center { flex-direction: row; padding: 20px; }
  .comp-center-label { writing-mode: initial; }
}
@media (max-width: 680px) {
  .ai-hero { padding: 120px 0 60px; }
  .tip-compare { grid-template-columns: 1fr; }
  .ai-cta-block { padding: 48px 28px; }
  .ai-cta-geo { display: none; }
  .pb-row { grid-template-columns: 1fr; gap: 8px; }
  .roadmap-track { min-width: 600px; }
}

/* ============================================================ */
/* CONTINUATION AREA — add new AI course CSS below             */
/* ============================================================ */
/*
  TODO / СЛЕДУЮЩИЕ СТИЛИ:
  ─────────────────────────────────────────────────────────────
  .practice-lab { }        — Лаборатория промптов (секция практики)
  .model-card { }          — Карточка LLM-модели (GPT, Claude, Gemini)
  .tool-showcase { }       — Витрина инструментов (Cursor, Copilot)
  .project-card { }        — Проектные кейсы
  .faq-item { }            — FAQ аккордеон
  .instructor-card { }     — Карточка преподавателя
  ─────────────────────────────────────────────────────────────
*/