:root {
  --color-bg: #08080c;
  --color-bg-elevated: #0c0c12;
  --color-surface: #12121a;
  --color-surface-2: #16161f;
  --color-text: #f4f4f5;
  --color-muted: #a1a1aa;
  --color-border: rgba(100, 229, 249, 0.14);
  --color-border-strong: rgba(88, 86, 214, 0.45);
  --color-cyan: #64e5f9;
  --color-cyan-dim: #4ad4eb;
  --color-indigo: #5856d6;
  --color-violet: #4745a0;
  --color-on-cyan: #0a0a10;
  --color-warn: #fbbf24;
  --color-danger: #f87171;
  --color-danger-bg: rgba(248, 113, 113, 0.12);
  --radius: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(100, 229, 249, 0.06);
  --shadow-glow-cyan: 0 0 24px rgba(100, 229, 249, 0.25);
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  padding-bottom: env(safe-area-inset-bottom);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  background-image: radial-gradient(ellipse 120% 80% at 50% -40%, rgba(88, 86, 214, 0.18), transparent 55%);
  line-height: 1.6;
}

a {
  color: var(--color-cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #9cf0ff;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

.container {
  width: min(1100px, 100% - 2rem);
  max-width: 100%;
  margin-inline: auto;
  box-sizing: border-box;
}

.site-header {
  background: rgba(12, 12, 18, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 20;
  padding-top: env(safe-area-inset-top);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  flex-wrap: wrap;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-cyan);
}

.logo:hover .logo-title {
  color: var(--color-cyan);
}

.logo-img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  line-height: 1.15;
}

.logo-title {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-badge {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid rgba(100, 229, 249, 0.45);
  background: rgba(100, 229, 249, 0.08);
  color: var(--color-cyan);
}

.nav {
  display: flex;
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
}

.nav a {
  font-weight: 600;
  text-decoration: none;
  color: var(--color-muted);
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
}

.nav a:hover {
  color: var(--color-cyan);
  background: rgba(100, 229, 249, 0.08);
}

.site-main {
  padding: 2rem 0 3rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  padding: 1.5rem 0;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.footer-inner {
  display: grid;
  gap: 0.5rem;
}

.footer-note {
  margin: 0;
}

.footer-copy {
  margin: 0;
}

.site-footer a {
  color: var(--color-cyan-dim);
}

.hero {
  display: grid;
  gap: 1.25rem;
  padding: 2rem 0 1rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 62ch;
  margin: 0;
}

.grid-2 {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.areas-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 960px) {
  .areas-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.card h2,
.card h3 {
  margin-top: 0;
}

.stack {
  display: grid;
  gap: 1rem;
}

.muted {
  color: var(--color-muted);
}

.disclaimer {
  border-left: 3px solid var(--color-cyan);
  padding: 0.75rem 1rem;
  background: rgba(71, 69, 160, 0.2);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.disclaimer strong {
  color: var(--color-cyan);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.2rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-cyan-dim));
  color: var(--color-on-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover {
  filter: brightness(1.08);
  color: var(--color-on-cyan);
}

.btn-secondary {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  background: rgba(100, 229, 249, 0.06);
}

.progress {
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
  margin: 1rem 0;
  border: 1px solid var(--color-border);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-violet), var(--color-cyan));
  width: 0%;
  transition: width 0.25s ease;
}

.step-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.question-block {
  display: grid;
  gap: 1.25rem;
}

.question-item {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.question-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.question-text {
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}

.likert {
  display: grid;
  gap: 0.35rem;
}

@media (min-width: 640px) {
  .likert {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.likert label {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 0.45rem 0.35rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface-2);
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--color-muted);
}

.likert input {
  margin-top: 0.2rem;
  accent-color: var(--color-cyan);
}

.likert label:has(input:checked) {
  border-color: var(--color-cyan);
  background: rgba(100, 229, 249, 0.1);
  color: var(--color-text);
}

.options-list {
  display: grid;
  gap: 0.5rem;
}

.option-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-2);
  cursor: pointer;
  color: var(--color-muted);
}

.option-row:has(input:checked) {
  border-color: var(--color-cyan);
  background: rgba(100, 229, 249, 0.1);
  color: var(--color-text);
}

.option-row input {
  margin-top: 0.25rem;
  accent-color: var(--color-cyan);
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--color-danger-bg);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: #fecaca;
}

.result-hero {
  display: grid;
  gap: 0.75rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  background: rgba(88, 86, 214, 0.25);
  border: 1px solid rgba(100, 229, 249, 0.2);
  color: var(--color-cyan);
  font-weight: 700;
  font-size: 0.85rem;
}

.course-list {
  display: grid;
  gap: 1rem;
}

.course-card h4 {
  margin: 0 0 0.25rem;
}

.radar-wrap {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-height: min(320px, 75vw);
  overflow: hidden;
}

.radar-wrap canvas {
  display: block;
  max-width: 100%;
}

.list-check {
  margin: 0;
  padding-left: 1.1rem;
}

.list-check li {
  margin: 0.25rem 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}