/* Recon BI Platform - Deep Report Stylesheet
   Design system: design-system/MASTER.md
   Style: Minimalism & Swiss Style */

/* ========================================
   CSS Variables (Design System Tokens)
   ======================================== */

:root {
  /* Colors */
  --color-primary: #1E40AF;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1E3A8A;
  --color-accent: #F59E0B;
  --color-accent-light: #FCD34D;

  /* Grades */
  --color-grade-a: #22C55E;
  --color-grade-b: #3B82F6;
  --color-grade-c: #F59E0B;
  --color-grade-d: #F97316;
  --color-grade-f: #EF4444;

  /* Backgrounds */
  --bg-primary: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-section-alt: #F1F5F9;
  --bg-dark: #0F172A;
  --bg-metric: #EFF6FF;

  /* Text */
  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;
  --text-on-dark: #F8FAFC;
  --text-on-accent: #FFFFFF;

  /* Borders */
  --border-default: #E2E8F0;
  --border-active: #3B82F6;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 64px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 50%;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 28px;
  --font-size-3xl: 36px;
  --font-size-metric: 48px;
  --font-size-grade: 64px;
}


/* ========================================
   Reset & Base
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  line-height: 1.3;
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.4;
}

h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}


/* ========================================
   Layout
   ======================================== */

.report-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background-color: var(--bg-section-alt);
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .report-container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-lg) 0;
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }
}


/* ========================================
   Navigation (Sticky)
   ======================================== */

.section-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-default);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.section-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  gap: 0;
  white-space: nowrap;
}

.section-nav__link {
  display: inline-block;
  padding: var(--space-md) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
  min-height: 44px;
  min-width: 44px;
  text-align: center;
}

.section-nav__link:hover {
  color: var(--color-primary);
}

.section-nav__link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.section-nav__link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (max-width: 768px) {
  .section-nav__inner {
    padding: 0 var(--space-sm);
  }

  .section-nav__link {
    padding: var(--space-sm) var(--space-sm);
    font-size: var(--font-size-xs);
  }
}


/* ========================================
   Hero Section
   ======================================== */

.hero {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--space-2xl) 0;
}

.hero h1 {
  color: var(--text-on-dark);
  margin-bottom: var(--space-md);
}

.hero__meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.hero__score-row {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}


/* ========================================
   Score Components
   ======================================== */

.score-gauge {
  position: relative;
  width: 160px;
  height: 160px;
}

.score-gauge__ring {
  transform: rotate(-90deg);
}

.score-gauge__bg {
  fill: none;
  stroke: var(--border-default);
  stroke-width: 10;
}

.score-gauge__fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease;
}

.score-gauge__center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.score-gauge__value {
  font-size: var(--font-size-metric);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.score-gauge__grade {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
}

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.score-badge--a { background-color: #DCFCE7; color: #166534; }
.score-badge--b { background-color: #DBEAFE; color: #1E40AF; }
.score-badge--c { background-color: #FEF3C7; color: #92400E; }
.score-badge--d { background-color: #FFEDD5; color: #9A3412; }
.score-badge--f { background-color: #FEE2E2; color: #991B1B; }

.metric-card {
  background-color: var(--bg-metric);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.metric-card__value {
  font-size: var(--font-size-metric);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.metric-card__label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sub-score-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
}

.sub-score-bar__label {
  flex: 0 0 140px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.sub-score-bar__track {
  flex: 1;
  height: 8px;
  background-color: var(--bg-section-alt);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.sub-score-bar__fill {
  height: 100%;
  border-radius: var(--radius-sm);
  transition: width 0.6s ease;
}

.sub-score-bar__value {
  flex: 0 0 40px;
  text-align: right;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .sub-score-bar__label {
    flex: 0 0 100px;
  }
}


/* ========================================
   Tables
   ======================================== */

.data-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.data-table thead th {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-md) var(--space-md);
  text-align: left;
}

.data-table thead th.col-you {
  background-color: var(--color-primary);
}

.data-table tbody td {
  padding: var(--space-md) var(--space-md);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--border-default);
  height: 48px;
  vertical-align: middle;
}

.data-table tbody tr:nth-child(odd) td {
  background-color: var(--bg-card);
}

.data-table tbody tr:nth-child(even) td {
  background-color: var(--bg-section-alt);
}

.data-table tbody td.col-you {
  font-weight: 600;
  color: var(--color-primary);
}

.data-table tbody tr:nth-child(odd) td.col-you {
  background-color: var(--bg-metric);
}

.data-table tbody tr:nth-child(even) td.col-you {
  background-color: #DBEAFE;
}

.data-table td.text-center,
.data-table th.text-center {
  text-align: center;
}

@media (max-width: 768px) {
  .data-table {
    font-size: var(--font-size-xs);
  }

  .data-table thead th,
  .data-table tbody td {
    padding: var(--space-sm);
  }
}


/* ========================================
   SWOT Grid
   ======================================== */

.swot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-default);
}

.swot-cell {
  padding: var(--space-lg);
}

.swot-cell h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.swot-cell ul {
  list-style: none;
  padding: 0;
}

.swot-cell li {
  font-size: var(--font-size-sm);
  line-height: 1.5;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.swot-cell li:last-child {
  border-bottom: none;
}

.swot-strengths {
  background-color: #F0FDF4;
}
.swot-strengths h4 { color: #166534; }

.swot-weaknesses {
  background-color: #FEF2F2;
}
.swot-weaknesses h4 { color: #991B1B; }

.swot-opportunities {
  background-color: #EFF6FF;
}
.swot-opportunities h4 { color: #1E40AF; }

.swot-threats {
  background-color: #FFFBEB;
}
.swot-threats h4 { color: #92400E; }

@media (max-width: 768px) {
  .swot-grid {
    grid-template-columns: 1fr;
  }
}


/* ========================================
   Opportunity Cards
   ======================================== */

.opp-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
}

.opp-card__rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
  color: var(--text-on-accent);
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.opp-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.opp-card__detail {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.opp-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-block;
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag--high-impact { background-color: #DCFCE7; color: #166534; }
.tag--medium-impact { background-color: #FEF3C7; color: #92400E; }
.tag--low-impact { background-color: #FEE2E2; color: #991B1B; }
.tag--low-effort { background-color: #DCFCE7; color: #166534; }
.tag--medium-effort { background-color: #FEF3C7; color: #92400E; }
.tag--high-effort { background-color: #FEE2E2; color: #991B1B; }
.tag--roi { background-color: #EFF6FF; color: #1E40AF; }
.tag--value { background-color: #F3E8FF; color: #6B21A8; }


/* ========================================
   Action Items
   ======================================== */

.action-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-default);
}

.action-item:last-child {
  border-bottom: none;
}

.action-item__number {
  flex: 0 0 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: var(--text-on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.action-item__content {
  flex: 1;
}

.action-item__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.action-item__meta {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}


/* ========================================
   Section Headers
   ======================================== */

.section-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.section-header h2 {
  margin: 0;
}


/* ========================================
   Footer
   ======================================== */

.report-footer {
  background-color: var(--bg-dark);
  color: var(--text-muted);
  padding: var(--space-xl) 0;
  text-align: center;
  font-size: var(--font-size-sm);
}

.report-footer a {
  color: var(--color-primary-light);
}

.report-footer a:hover {
  color: var(--color-accent-light);
}


/* ========================================
   Skip Link (Accessibility)
   ======================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 200;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-md);
}


/* ========================================
   Empty State
   ======================================== */

.empty-state {
  text-align: center;
  padding: var(--space-xl);
  color: var(--text-secondary);
  font-style: italic;
}


/* ========================================
   Tier Gating
   ======================================== */

.section-gated {
  position: relative;
  overflow: hidden;
  max-height: 300px;
}

.section-gated::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, #F8FAFC);
  pointer-events: none;
}

.section-alt .section-gated::after {
  background: linear-gradient(to bottom, transparent, #F1F5F9);
}

.gate-cta {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  text-align: center;
  padding: var(--space-lg) var(--space-xl);
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.gate-cta__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.gate-cta__button {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  margin-top: var(--space-md);
}

.gate-cta__button:hover {
  opacity: 0.9;
  color: white;
}


/* ========================================
   Print Styles
   ======================================== */

@media print {
  .section-nav,
  .skip-link {
    display: none !important;
  }

  .section-gated {
    max-height: none;
    overflow: visible;
  }

  .section-gated::after,
  .gate-cta {
    display: none !important;
  }

  .hero {
    background-color: #FFFFFF !important;
    color: #000000 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .hero h1 {
    color: #000000 !important;
  }

  body {
    background-color: #FFFFFF;
  }

  .section {
    page-break-inside: avoid;
    padding: 24px 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .report-footer {
    background-color: #FFFFFF !important;
    color: #666 !important;
  }

  .swot-strengths,
  .swot-weaknesses,
  .swot-opportunities,
  .swot-threats {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}