/* ==========================================================================
   Report Styles: "Linear" Dark Design System
   Deep OLED dark mode, aurora gradient lighting, glassmorphic surfaces
   Usage: <link rel="stylesheet" href="report-styles.css">
   ========================================================================== */

/* --- Design Tokens (CSS Custom Properties) --- */
:root {
  /* Colors: bright accents, used sparingly via gradients / hovers */
  --color-primary:        #8b5cf6;  /* violet */
  --color-primary-light:  #c4b5fd;
  --color-primary-subtle: rgba(139, 92, 246, 0.12);
  --color-accent:         #22d3ee;  /* cyan */
  --color-accent-light:   #67e8f9;
  --color-magenta:        #e879f9;
  --color-success:        #34d399;
  --color-warning:        #fbbf24;
  --color-danger:         #fb7185;

  /* Aurora / accent gradients (reserved for hero + primary CTAs) */
  --gradient-aurora:  linear-gradient(110deg, #22d3ee 0%, #8b5cf6 45%, #e879f9 100%);
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
  --gradient-accent:  linear-gradient(135deg, #22d3ee 0%, #8b5cf6 100%);
  --gradient-magenta: linear-gradient(135deg, #e879f9 0%, #8b5cf6 100%);
  --gradient-success: linear-gradient(135deg, #34d399 0%, #22d3ee 100%);
  --gradient-warning: linear-gradient(135deg, #fbbf24 0%, #fb7185 100%);
  --gradient-danger:  linear-gradient(135deg, #fb7185 0%, #e879f9 100%);

  /* Colors: Neutral (OLED-leaning dark scale) */
  --color-text:           #ffffff;                    /* high-contrast headings */
  --color-text-secondary: #a1a1aa;                    /* muted slate body */
  --color-text-muted:     #71717a;                    /* faint meta text */
  --color-border:         rgba(255, 255, 255, 0.08);  /* hairline divider */
  --color-border-strong:  rgba(255, 255, 255, 0.12);  /* hover / emphasis */
  --color-bg:             #0a0a0a;                     /* OLED black */
  --color-bg-elevated:    #0f0f12;
  --color-surface:        rgba(255, 255, 255, 0.03);   /* glass fill */
  --color-surface-hover:  rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-sans: 'Inter', 'Geist', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', 'Geist', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', SFMono-Regular, ui-monospace, Menlo, Consolas, monospace;
  --text-xs:   0.8125rem;  /* 13px */
  --text-sm:   0.9375rem;  /* 15px */
  --text-base: 1.0625rem;  /* 17px */
  --text-lg:   1.375rem;   /* 22px */
  --text-xl:   1.5rem;     /* 24px */
  --text-2xl:  1.875rem;   /* 30px */
  --text-3xl:  2.25rem;    /* 36px */
  --text-4xl:  3.25rem;    /* 52px */
  --leading-tight:  1.15;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  --tracking-tight: -0.02em;
  --tracking-tighter: -0.035em;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.125rem;
  --radius-2xl: 1.5rem;

  /* Subtle glows only, no heavy drop shadows (separation via borders) */
  --glow-violet: 0 0 60px -12px rgba(139, 92, 246, 0.45);
  --glow-cyan:   0 0 50px -14px rgba(34, 211, 238, 0.40);

  /* Layout */
  --container-max: 78rem; /* 1248px */

  /* Aurora intensity */
  --aurora-opacity-top: 0.55;
  --aurora-opacity-bottom: 0.4;

  /* Scrollbar */
  --scrollbar-thumb: rgba(255, 255, 255, 0.12);
  --scrollbar-thumb-hover: rgba(255, 255, 255, 0.22);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  position: relative;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: -0.011em;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Aurora background lighting ---
   Large, highly blurred radial gradients fixed behind all content.
   Cyan / violet / magenta, used sparingly for atmosphere. */
body::before,
body::after {
  content: '';
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
}

/* Top hero glow: draws the eye to the header / primary content */
body::before {
  top: -22vh;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 60vh;
  opacity: var(--aurora-opacity-top);
  background:
    radial-gradient(closest-side, rgba(139, 92, 246, 0.55), transparent 70%),
    radial-gradient(closest-side, rgba(34, 211, 238, 0.35), transparent 70%);
  background-position: 30% 40%, 75% 30%;
  background-repeat: no-repeat;
  background-size: 70% 90%, 60% 80%;
}

/* Lower ambient magenta wash */
body::after {
  bottom: -25vh;
  right: -10vw;
  width: 55vw;
  height: 55vh;
  background: radial-gradient(closest-side, rgba(232, 121, 249, 0.28), transparent 70%);
  opacity: var(--aurora-opacity-bottom);
}

img, svg { display: block; max-width: 100%; }

/* Smooth theme cross-fade for surfaces that don't already animate colors.
   (kpi-card / arch-card / tabs already transition background+border on hover,
   so they cross-fade for free, and we skip them here to avoid clobbering that.) */
body,
.report__card,
.info-panel,
.chart,
.ranking-list,
.report__footer {
  transition: background-color 0.35s ease, border-color 0.35s ease, color 0.35s ease;
}

/* --- Layout --- */
.report {
  position: relative;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-12) var(--space-4);
}

/* Primary glass surface: the colorful aurora bleeds through the blur */
.report__card {
  background: var(--color-surface);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-12);
}

/* --- Report Header (hero) --- */
.report__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.report__intro {
  min-width: 0;
}

.report__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  background: var(--gradient-aurora);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-tighter);
}

.report__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  max-width: 60ch;
}

/* --- Context / Info Panel --- */
.info-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

/* Thin accent rail instead of a heavy left border */
.info-panel::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--gradient-accent);
  opacity: 0.7;
}

.info-panel__heading {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.info-panel__body {
  list-style: none;
}

.info-panel__item {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  padding-block: var(--space-1);
}

.info-panel__item strong {
  color: var(--color-text);
  font-weight: 600;
}

/* --- KPI / Stat Cards: bento grid --- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.kpi-card {
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  text-align: left;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

/* Colored aurora glow bleeds in from a corner: bright but soft */
.kpi-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 160%;
  background: var(--gradient-primary);
  filter: blur(48px);
  opacity: 0.22;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.kpi-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-strong);
  background: var(--color-surface-hover);
}

.kpi-card:hover::before {
  opacity: 0.4;
}

.kpi-card--primary::before { background: var(--gradient-primary); }
.kpi-card--accent::before  { background: var(--gradient-accent); }
.kpi-card--success::before { background: var(--gradient-success); }
.kpi-card--warning::before { background: var(--gradient-warning); }
.kpi-card--danger::before  { background: var(--gradient-danger); }

.kpi-card__value {
  position: relative;
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-3);
  font-family: var(--font-display);
  letter-spacing: var(--tracking-tight);
  font-variant-numeric: tabular-nums;
}

.kpi-card__label {
  position: relative;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Section (generic reusable wrapper) --- */
.report-section {
  margin-bottom: var(--space-10);
}

.report-section__heading {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  letter-spacing: var(--tracking-tight);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* --- Chart Container --- */
.chart {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.chart__title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-4);
}

.chart__canvas {
  width: 100%;
  height: 400px;
}

/* --- Architecture Contribution Grid --- */
.arch-overview {
  margin-bottom: var(--space-10);
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-6);
}

.arch-card {
  --accent: var(--color-primary);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: left;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-family: inherit;
  overflow: hidden;
  isolation: isolate;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.25s ease, border-color 0.25s ease,
              background 0.25s ease, box-shadow 0.25s ease;
}

/* Colored top rail in the category accent */
.arch-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent);
  opacity: 0.9;
}

/* Soft accent glow bleeding in from a corner */
.arch-card::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -30%;
  width: 75%;
  height: 150%;
  background: radial-gradient(closest-side, var(--accent), transparent 70%);
  opacity: 0.12;
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.arch-card:hover,
.arch-card:focus-visible {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent),
              0 20px 45px -22px var(--accent);
  outline: none;
}

.arch-card:hover::after,
.arch-card:focus-visible::after {
  opacity: 0.24;
}

.arch-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.arch-card__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.arch-card__badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: 9999px;
  line-height: 1;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}

.arch-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.arch-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.arch-card__meta {
  margin-top: auto;
  padding-top: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.arch-card__count {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.arch-card__arrow {
  margin-left: auto;
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--accent);
  transition: transform 0.25s ease;
}

.arch-card:hover .arch-card__arrow,
.arch-card:focus-visible .arch-card__arrow {
  transform: translateX(4px);
}

/* Brief highlight when a card jumps to its detail section */
.ranking-list--flash {
  animation: rankingFlash 1.5s ease;
}

@keyframes rankingFlash {
  0%   {
    border-color: var(--accent, var(--color-primary));
    box-shadow: 0 0 45px -12px var(--accent, var(--color-primary));
  }
  100% {
    border-color: var(--color-border);
    box-shadow: none;
  }
}

/* Detail sections need scroll-margin so they aren't hidden under the top */
.ranking-list {
  scroll-margin-top: var(--space-8);
}

/* Accent-tinted detail sections: match each architecture card's color */
.ranking-list--accent {
  --accent: var(--color-primary);
}

.ranking-list--accent .ranking-list__header {
  border-top: 3px solid var(--accent);
  position: relative;
}

/* Soft accent wash behind the header */
.ranking-list--accent .ranking-list__header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 140% at 0% 0%, var(--accent), transparent 55%);
  opacity: 0.08;
  pointer-events: none;
}

.ranking-list--accent .ranking-list__header > * {
  position: relative;
  z-index: 1;
}

.ranking-list--accent .ranking-list__num {
  color: var(--accent);
  font-variant-numeric: normal;
  margin-right: var(--space-1);
}

.ranking-list--accent .ranking-list__item:hover {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.ranking-list--accent .ranking-list__name a:hover {
  color: var(--accent);
}

/* --- Data Table / Ranking List --- */
.ranking-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-10);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.ranking-list__header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.ranking-list__title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

.ranking-list__body {
  max-height: 20rem;
  overflow-y: auto;
}

.ranking-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s ease;
}

.ranking-list__item:last-child {
  border-bottom: none;
}

.ranking-list__item:hover {
  background: var(--color-surface-hover);
}

.ranking-list__item--highlight {
  background: var(--color-primary-subtle);
  box-shadow: inset 2px 0 0 var(--color-primary);
}

.ranking-list__item--highlight:hover {
  background: rgba(139, 92, 246, 0.18);
}

.ranking-list__rank {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 2rem;
  font-variant-numeric: tabular-nums;
}

.ranking-list__name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  flex: 1;
}

.ranking-list__name strong { color: var(--color-text); font-weight: 600; }

.ranking-list__value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* --- Badge (reusable inline label) --- */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: 9999px;
  line-height: 1;
  border: 1px solid var(--color-border-strong);
}
.badge--primary { background: rgba(139, 92, 246, 0.14); color: var(--color-primary-light); }
.badge--success { background: rgba(52, 211, 153, 0.14); color: var(--color-success); }
.badge--warning { background: rgba(251, 191, 36, 0.14); color: var(--color-warning); }
.badge--danger  { background: rgba(251, 113, 133, 0.14); color: var(--color-danger); }

/* --- Report Footer --- */
.report__footer {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.report__footer span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* --- Links --- */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

.text-mono {
  font-family: var(--font-mono);
}

/* --- Tabs --- */
.tabs {
  margin-bottom: var(--space-8);
}

.tabs__nav {
  display: inline-flex;
  gap: var(--space-1);
  padding: var(--space-1);
  margin-bottom: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.tabs__btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
  font-family: inherit;
  letter-spacing: var(--tracking-tight);
  border-radius: var(--radius-md);
}

.tabs__btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.tabs__btn--active {
  color: var(--color-text);
  background: var(--color-primary-subtle);
  box-shadow: inset 0 0 0 1px var(--color-border-strong);
}

.tabs__panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tabs__panel--active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Responsive --- */
@media (max-width: 48rem) {
  .report__card {
    padding: var(--space-6);
  }

  .report__title {
    font-size: var(--text-2xl);
  }

  .kpi-card__value {
    font-size: var(--text-2xl);
  }

  .chart__canvas {
    height: 280px;
  }

  .ranking-list__item {
    padding-inline: var(--space-4);
  }

  .ranking-list__header {
    padding-inline: var(--space-4);
  }
}

@media (max-width: 30rem) {
  .report {
    padding: var(--space-6) var(--space-3);
  }

  .report__card {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }

  .kpi-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* --- Print --- */
@media print {
  body { background: #0a0a0a; color: #ffffff; }
  body::before, body::after { display: none; }

  .report__card {
    border: 1px solid var(--color-border);
    backdrop-filter: none;
  }

  .ranking-list__body {
    max-height: none;
    overflow: visible;
  }
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* --- Selection --- */
::selection {
  background: rgba(139, 92, 246, 0.35);
  color: #fff;
}