/* ============================================================
   VM Importer Pro — Shared Stylesheet
   Design System: Precision Monolith (Light Theme)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  --clr-surface:               #fcf8fb;
  --clr-surface-low:           #f6f3f5;
  --clr-surface-container:     #f0edef;
  --clr-surface-high:          #eae7ea;
  --clr-surface-highest:       #e4e2e4;
  --clr-surface-lowest:        #ffffff;
  --clr-on-surface:            #1b1b1d;
  --clr-on-surface-variant:    #414753;
  --clr-primary:               #004e9f;
  --clr-primary-container:     #0066cc;
  --clr-on-primary:            #ffffff;
  --clr-on-primary-container:  #dfe8ff;
  --clr-outline:               #727784;
  --clr-outline-variant:       #c1c6d5;
  --clr-inverse-surface:       #303032;
  --clr-inverse-on-surface:    #f3f0f2;
  --clr-secondary-container:   #e2dfe1;
  --clr-on-secondary-container:#636264;

  --font-base: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Courier New', Monaco, Menlo, monospace;

  --nav-width:   288px;
  --radius:      0.25rem;
  --radius-lg:   0.5rem;
  --radius-xl:   0.75rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-base);
  background-color: var(--clr-surface);
  color: var(--clr-on-surface);
  -webkit-font-smoothing: antialiased;
  display: flex;
  min-height: 100vh;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Material Icons ───────────────────────────────────────── */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 20px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  vertical-align: middle;
  flex-shrink: 0;
  user-select: none;
}

/* ── Side Navigation ──────────────────────────────────────── */
.side-nav {
  position: fixed;
  left: 0; top: 0;
  width: var(--nav-width);
  height: 100vh;
  background-color: #f8f7f9;
  display: flex;
  flex-direction: column;
  z-index: 40;
}

.side-nav-brand {
  padding: 2.5rem 2rem 1.5rem;
}
.side-nav-brand h1 {
  font-size: 1.05rem;
  font-weight: 900;
  color: #1e1e22;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}
.side-nav-brand p {
  font-size: 0.68rem;
  font-weight: 600;
  color: #9ca3af;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.side-nav-links {
  list-style: none;
  flex: 1;
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.side-nav-links li a,
.side-nav-links li .nav-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9ca3af;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.side-nav-links li a:hover {
  color: #1e1e22;
  background-color: #f1f0f3;
  text-decoration: none;
}

/* Active step */
.side-nav-links li.active a,
.side-nav-links li.active .nav-item {
  background-color: #eff6ff;
  color: #1d4ed8;
  border-left: 4px solid #1d4ed8;
  padding-left: calc(1.5rem - 4px);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
  box-shadow: 0 0 16px rgba(0,78,159,0.08);
}

/* Completed step */
.side-nav-links li.completed a,
.side-nav-links li.completed .nav-item {
  color: #6b7280;
}
.side-nav-links li.completed a .step-check {
  color: #10b981;
}

/* Locked/future step */
.side-nav-links li.locked a,
.side-nav-links li.locked .nav-item {
  color: #d1d5db;
  cursor: default;
  pointer-events: none;
}

.side-nav-footer {
  padding: 1.25rem 2rem;
}
.side-nav-footer p {
  font-size: 0.68rem;
  color: #9ca3af;
}

/* ── Main Canvas ──────────────────────────────────────────── */
.main-canvas {
  margin-left: var(--nav-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-y: auto;
}

/* ── Progress Bar ─────────────────────────────────────────── */
.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 3rem;
  background-color: var(--clr-surface);
  border-bottom: 1px solid var(--clr-surface-highest);
  position: sticky;
  top: 0;
  z-index: 30;
}
.progress-bar-track {
  flex: 1;
  height: 4px;
  background-color: var(--clr-surface-highest);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background-color: var(--clr-primary);
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px rgba(0,78,159,0.35);
  transition: width 0.6s ease;
}
.progress-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── Page Header / Hero (dark band) ──────────────────────── */
.page-header {
  background-color: var(--clr-inverse-surface);
  color: var(--clr-inverse-on-surface);
  padding: 3.5rem 3rem;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #303032 100%);
  z-index: 0;
}
.page-header-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.step-badge {
  display: inline-block;
  background-color: var(--clr-surface-highest);
  color: var(--clr-primary);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}
.page-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #ffffff;
  margin-bottom: 0.75rem;
}
.page-header p {
  font-size: 1rem;
  color: #b0b5c3;
  line-height: 1.65;
  max-width: 520px;
}

/* ── Content Body ─────────────────────────────────────────── */
.content-body {
  flex: 1;
  padding: 3rem;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background-color: var(--clr-surface-lowest);
  border-radius: var(--radius-xl);
  padding: 2rem 2.5rem;
  outline: 1px solid rgba(193,198,213,0.3);
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.3s ease, outline-color 0.3s ease;
}
.card:hover {
  box-shadow: 0 20px 48px rgba(27,27,29,0.05);
  outline-color: rgba(0,78,159,0.22);
}
.card-low {
  background-color: var(--clr-surface-low);
  border-radius: var(--radius-xl);
  padding: 2rem 2.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}
.card-section-title {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Step List ────────────────────────────────────────────── */
.step-list {
  list-style: none;
  counter-reset: step-counter;
}
.step-item {
  counter-increment: step-counter;
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
  align-items: flex-start;
}
.step-number {
  flex-shrink: 0;
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-container));
  color: #ffffff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0,78,159,0.2);
  margin-top: 2px;
}
.step-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-on-surface);
  margin-bottom: 0.45rem;
  line-height: 1.4;
}
.step-content p {
  font-size: 0.9rem;
  color: var(--clr-on-surface-variant);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}
.step-content p:last-child { margin-bottom: 0; }

/* ── Code Block ───────────────────────────────────────────── */
.code-block {
  background-color: var(--clr-surface-lowest);
  border: 1px solid rgba(193,198,213,0.25);
  border-radius: var(--radius-lg);
  padding: 0.875rem 1.25rem;
  margin: 0.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--clr-primary);
  overflow-x: auto;
  white-space: pre;
  line-height: 1.6;
}
.card-low .code-block {
  background-color: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
}

/* ── Step Image ───────────────────────────────────────────── */
.step-image {
  margin: 1rem 0 0.25rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  outline: 1px solid rgba(193,198,213,0.25);
}
.step-image img {
  width: 100%; height: auto;
  display: block;
}
.step-image figcaption {
  background-color: var(--clr-surface-container);
  font-size: 0.75rem;
  color: var(--clr-on-surface-variant);
  padding: 0.5rem 1rem;
  text-align: center;
}

/* ── Note / Warning Boxes ─────────────────────────────────── */
.note-box {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  margin: 0.75rem 0;
  font-size: 0.875rem;
  line-height: 1.65;
}
.note-box.info {
  background-color: #eff6ff;
  border-left: 4px solid var(--clr-primary);
  color: #1e3a6e;
}
.note-box.warning {
  background-color: #fffbeb;
  border-left: 4px solid #f59e0b;
  color: #78350f;
}
.note-box .note-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}
.note-box strong { font-weight: 700; }

/* ── Selection Cards (choose-conversion page) ─────────────── */
.selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.selection-card {
  background-color: var(--clr-surface-lowest);
  border-radius: var(--radius-2xl);
  padding: 2.5rem 2rem;
  outline: 1px solid rgba(193,198,213,0.3);
  cursor: pointer;
  transition: all 0.35s ease;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  min-height: 240px;
  position: relative;
  overflow: hidden;
}
.selection-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent, rgba(0,78,159,0.04));
  opacity: 0;
  transition: opacity 0.35s ease;
}
.selection-card:hover::before { opacity: 1; }
.selection-card:hover {
  outline-color: rgba(0,78,159,0.4);
  box-shadow: 0 20px 40px rgba(0,78,159,0.09);
  transform: translateY(-3px);
  text-decoration: none;
  color: inherit;
}
.selection-card-icon {
  width: 56px; height: 56px;
  background-color: var(--clr-surface-container);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  transition: all 0.35s ease;
}
.selection-card-icon .material-symbols-outlined { font-size: 28px; }
.selection-card:hover .selection-card-icon {
  background-color: var(--clr-primary);
  color: #ffffff;
}
.selection-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-on-surface);
  letter-spacing: -0.01em;
  transition: color 0.3s ease;
}
.selection-card:hover h3 { color: var(--clr-primary); }
.selection-card p {
  font-size: 0.875rem;
  color: var(--clr-on-surface-variant);
  line-height: 1.65;
  flex: 1;
}
.selection-card-cta {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap 0.2s ease;
}
.selection-card:hover .selection-card-cta { gap: 0.7rem; }

/* ── Answer Cards (index page) ────────────────────────────── */
.answer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}
.answer-card {
  background-color: var(--clr-surface-low);
  border-radius: var(--radius-2xl);
  padding: 2.5rem 1.5rem;
  outline: 1px solid rgba(193,198,213,0.25);
  cursor: pointer;
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 200px;
  text-align: center;
  border: none;
  font-family: var(--font-base);
}
.answer-card:hover {
  background-color: var(--clr-primary);
  outline-color: transparent;
  box-shadow: 0 16px 40px rgba(0,78,159,0.22);
  transform: translateY(-2px);
}
.answer-card .answer-icon {
  width: 60px; height: 60px;
  border-radius: var(--radius-full);
  background-color: var(--clr-surface-highest);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  transition: all 0.35s ease;
}
.answer-card .answer-icon .material-symbols-outlined { font-size: 30px; }
.answer-card:hover .answer-icon {
  background-color: rgba(255,255,255,0.18);
  color: #ffffff;
}
.answer-card .answer-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-on-surface);
  transition: color 0.3s ease;
}
.answer-card:hover .answer-label { color: #ffffff; }
.answer-card .answer-sub {
  font-size: 0.8rem;
  color: var(--clr-on-surface-variant);
  transition: color 0.3s ease;
  line-height: 1.5;
}
.answer-card:hover .answer-sub { color: rgba(255,255,255,0.8); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-container));
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(0,78,159,0.22);
  transition: all 0.3s ease;
  font-family: var(--font-base);
}
.btn-primary:hover {
  box-shadow: 0 12px 28px rgba(0,78,159,0.32);
  transform: translateY(-2px);
  text-decoration: none;
  color: #ffffff;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--clr-surface-highest);
  color: var(--clr-on-surface);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  font-family: var(--font-base);
}
.btn-secondary:hover {
  background-color: var(--clr-surface-high);
  text-decoration: none;
  color: var(--clr-on-surface);
}
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  color: var(--clr-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
  font-family: var(--font-base);
}
.btn-text:hover {
  color: var(--clr-primary-container);
  text-decoration: none;
}

/* ── Action Bar ───────────────────────────────────────────── */
.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  margin-top: 2rem;
  border-top: 1px solid rgba(193,198,213,0.25);
}

/* ── Chip / Badge ─────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--clr-secondary-container);
  color: var(--clr-on-secondary-container);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Hero Section (index page full-screen) ────────────────── */
.hero-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  background: linear-gradient(160deg, #ede9f0 0%, #fcf8fb 45%, #eef3ff 100%);
  min-height: calc(100vh - 52px);
}
.glass-card {
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-radius: 2rem;
  padding: 3.5rem;
  outline: 1px solid rgba(193,198,213,0.22);
  box-shadow: 0 32px 64px rgba(27,27,29,0.05);
  max-width: 820px;
  width: 100%;
}
.glass-card h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 900;
  color: var(--clr-on-surface);
  letter-spacing: -0.03em;
  line-height: 1.15;
  text-align: center;
  margin-bottom: 0.75rem;
}
.glass-card .glass-sub {
  font-size: 0.95rem;
  color: var(--clr-on-surface-variant);
  text-align: center;
  line-height: 1.65;
  margin-bottom: 2rem;
}

/* ── UTM Install steps (hidden panel) ─────────────────────── */
.install-panel {
  display: none;
  margin-top: 2rem;
  animation: fadeSlide 0.4s ease;
}
.install-panel.visible { display: block; }
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.install-panel .install-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.install-step-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(193,198,213,0.2);
}
.install-step-row:last-child { border-bottom: none; }
.install-step-num {
  width: 26px; height: 26px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-container));
  color: #ffffff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.install-step-text {
  font-size: 0.9rem;
  color: var(--clr-on-surface-variant);
  line-height: 1.65;
  flex: 1;
}
.install-step-text strong { color: var(--clr-on-surface); font-weight: 700; }
.install-continue-wrap {
  margin-top: 1.5rem;
  text-align: center;
}

/* ── Success Banner (last page) ───────────────────────────── */
.success-banner {
  background: linear-gradient(135deg, #004e9f, #0066cc);
  color: #ffffff;
  border-radius: var(--radius-2xl);
  padding: 2.5rem;
  text-align: center;
  margin-bottom: 2rem;
}
.success-banner .success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}
.success-banner h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.success-banner p {
  font-size: 0.95rem;
  opacity: 0.88;
  line-height: 1.65;
}

/* ── Utility ──────────────────────────────────────────────── */
.text-primary { color: var(--clr-primary); }
.font-mono { font-family: var(--font-mono); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --nav-width: 0px; }
  .side-nav { display: none; }
  .main-canvas { margin-left: 0; }

  .content-body { padding: 1.5rem; }
  .page-header { padding: 2rem 1.5rem; }
  .progress-bar-wrap { padding: 0.75rem 1.5rem; }
  .hero-section { padding: 1.25rem; min-height: calc(100vh - 52px); }
  .glass-card { padding: 2rem 1.25rem; }

  .answer-grid { grid-template-columns: 1fr; }
  .selection-grid { grid-template-columns: 1fr; }
  .action-bar { flex-direction: column-reverse; gap: 0.75rem; align-items: flex-start; }

  .card, .card-low { padding: 1.5rem 1.25rem; }
}