/* ================================
   PortfolioHub - Criteria Page
   File: criteria.css – FULL VERSION
   ================================ */

:root {
  --color-bg: #020617;
  --color-bg-soft: #02091f;
  --color-surface: #020617;
  --color-surface-raised: #02091f;
  --color-border-subtle: rgba(148, 163, 184, 0.25);
  --color-border-strong: rgba(148, 163, 184, 0.4);

  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-text-soft: #6b7280;

  --color-accent: #3b82f6;
  --color-accent-soft: rgba(59, 130, 246, 0.15);
  --color-accent-strong: #60a5fa;

  --chip-a: #22c55e;
  --chip-b: #f97316;
  --chip-c: #eab308;
  --chip-d: #8b5cf6;

  --radius-sm: 0.625rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 999px;

  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.65);
  --shadow-chip: 0 0 0 1px rgba(15, 23, 42, 0.7),
    0 12px 30px rgba(15, 23, 42, 0.9);

  --nav-height: 4rem;
}

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

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}

body.criteria-body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: radial-gradient(circle at top left, #0f172a 0, #020617 48%, #000 100%);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

.criteria-body p {
  margin: 0 0 0.75rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.criteria-body h1,
.criteria-body h2,
.criteria-body h3,
.criteria-body h4 {
  margin: 0 0 0.4rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #f9fafb;
}

.criteria-body h1 {
  font-size: clamp(2.5rem, 4vw, 3.25rem);
}

.criteria-body h2 {
  font-size: clamp(1.6rem, 2.4vw, 2rem);
}

.criteria-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.criteria-body h4 {
  font-size: 0.98rem;
  text-transform: none;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
}

.criteria-body ul,
.criteria-body ol {
  margin: 0 0 0.75rem;
  padding-left: 1.2rem;
  color: var(--color-text-muted);
}

.criteria-body li + li {
  margin-top: 0.25rem;
}

.criteria-body a {
  color: var(--color-accent-strong);
  text-decoration: none;
}

.criteria-link {
  position: relative;
  font-weight: 500;
  color: var(--color-accent-strong);
  text-decoration: none;
  padding-bottom: 0.08rem;
}

.criteria-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.08rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(59, 130, 246, 0),
    rgba(59, 130, 246, 0.9),
    rgba(59, 130, 246, 0)
  );
  transform: scaleX(0.3);
  opacity: 0;
  transform-origin: center;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.criteria-link:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.criteria-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  font-size: 0.85rem;
  padding: 0.08rem 0.4rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: #e5e7eb;
}

/* Top Navigation */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.95),
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.7),
    transparent
  );
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.nav-left .logo {
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: #f9fafb;
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.7), transparent 65%),
    rgba(15, 23, 42, 0.9);
  box-shadow: var(--shadow-chip);
  transform-origin: center left;
  animation: logo-pop 0.7s ease-out both;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-link {
  position: relative;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--color-text-soft);
  transition: color 0.22s ease, background-color 0.22s ease, transform 0.22s ease,
    box-shadow 0.22s ease;
}

.nav-link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at top, rgba(59, 130, 246, 0.24), transparent 70%);
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: none;
}

.nav-link:hover {
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.9);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.7);
  transform: translateY(-1px);
}

.nav-link:hover::before {
  opacity: 1;
}

.nav-btn {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  border: none;
  outline: none;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  color: #e5e7eb;
  background: radial-gradient(circle at top left, #3b82f6, #1d4ed8);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.45);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.nav-btn:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.6);
  filter: brightness(1.03);
}

.nav-btn:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.9);
}

/* Main Layout */
.criteria-page {
  max-width: 1450px;
  width: 92%;
  margin: 2rem auto 4rem;

  display: grid;
  grid-template-columns: 1fr 320px;
  column-gap: 3.5rem;
  row-gap: 2rem;
}

.criteria-hero,
.criteria-toc,
.criteria-sections {
  grid-column: 1 / 2;
}

.criteria-sidebar {
  grid-column: 2 / 3;
  align-self: flex-start;
}

/* Hero Section */
.criteria-hero {
  position: relative;
  padding: 1.75rem 1.75rem 1.9rem;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.3), transparent 58%),
    radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.16), transparent 62%),
    rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.4);
  overflow: hidden;
  animation: fade-in-up 0.7s ease-out both;
}

.criteria-hero::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.16), transparent 52%),
    radial-gradient(circle at 100% 100%, rgba(34, 197, 94, 0.12), transparent 55%);
  mix-blend-mode: screen;
  opacity: 0.6;
  pointer-events: none;
}

.criteria-hero-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.8rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #bbf7d0;
  background: rgba(21, 128, 61, 0.22);
  border: 1px solid rgba(74, 222, 128, 0.35);
  box-shadow: var(--shadow-chip);
  backdrop-filter: blur(18px);
  animation: chip-float 4.5s ease-in-out infinite;
}

.criteria-hero > h1 {
  position: relative;
  margin-top: 0.8rem;
  margin-bottom: 0.35rem;
  line-height: 1.15;
  text-shadow: 0 18px 35px rgba(15, 23, 42, 0.9);
}

.criteria-hero > p {
  position: relative;
  max-width: 600px;
  color: var(--color-text-soft);
  font-size: 0.98rem;
}

.criteria-hero-grid {
  position: relative;
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.criteria-hero-item {
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(16px);
  transform-origin: center;
  animation: fade-in-up 0.7s ease-out both;
}

.criteria-hero-item:nth-child(1) { animation-delay: 0.1s; }
.criteria-hero-item:nth-child(2) { animation-delay: 0.2s; }
.criteria-hero-item:nth-child(3) { animation-delay: 0.3s; }

.hero-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-soft);
  margin-bottom: 0.3rem;
}

.criteria-hero-item p {
  margin: 0;
  font-size: 0.9rem;
  color: #e5e7eb;
}

/* Table of Contents */
.criteria-toc {
  margin-top: 1.3rem;
  padding: 1.25rem 1.5rem 1.2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.92),
    rgba(15, 23, 42, 0.96)
  );
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.9);
  animation: fade-in-up 0.7s ease-out both;
  animation-delay: 0.05s;
}

.criteria-toc h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 0.4rem;
  color: #cbd5f5;
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
  margin-top: 0.4rem;
}

.toc-col h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-soft);
  margin-bottom: 0.45rem;
}

.toc-col ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.toc-col li + li {
  margin-top: 0.1rem;
}

.toc-col a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.15rem 0;
  position: relative;
  transition: color 0.18s ease, transform 0.18s ease;
}

.toc-col a::before {
  content: "•";
  font-size: 0.7rem;
  color: var(--color-accent);
  opacity: 0.75;
  transform: translateY(0.5px);
}

.toc-col a:hover {
  color: #e5e7eb;
  transform: translateX(2px);
}

/* Sticky Sidebar */
.criteria-sidebar {
  align-self: flex-start;
  position: sticky;
  top: calc(var(--nav-height) + 1.25rem);
  padding: 1rem 1.15rem;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.2), transparent 60%),
    rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
  animation: fade-in-up 0.85s ease-out both;
}

.sidebar-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-soft);
  margin-bottom: 0.5rem;
}

.sidebar-link {
  display: block;
  margin: 0.05rem 0;
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  overflow: hidden;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.sidebar-link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.18), transparent);
  opacity: 0;
  transform: translateX(-20%);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.sidebar-link:hover {
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.95);
  transform: translateX(1px);
}

.sidebar-link:hover::before {
  opacity: 1;
  transform: translateX(0%);
}

.sidebar-link--a::before { background: linear-gradient(90deg, rgba(34, 197, 94, 0.2), transparent); }
.sidebar-link--b::before { background: linear-gradient(90deg, rgba(249, 115, 22, 0.2), transparent); }
.sidebar-link--c::before { background: linear-gradient(90deg, rgba(234, 179, 8, 0.25), transparent); }
.sidebar-link--d::before { background: linear-gradient(90deg, rgba(139, 92, 246, 0.25), transparent); }

/* Content Sections / Cards */
.criteria-sections {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.criteria-card {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, #020617 0%, #02091f 55%, #000 100%);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-soft);
  animation: fade-in-up 0.7s ease-out both;
  max-width: 100%;
  padding: 2rem 2.5rem;
}

.criteria-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 0.65rem;
}

.criteria-chip {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: #0b1120;
  text-shadow: none;
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.95);
  animation: chip-pop 0.55s cubic-bezier(0.2, 0.7, 0.3, 1.4) both;
}

.criteria-chip--a {
  background: radial-gradient(circle at 30% 0%, #bbf7d0, #22c55e);
}
.criteria-chip--b {
  background: radial-gradient(circle at 30% 0%, #ffedd5, #f97316);
}
.criteria-chip--c {
  background: radial-gradient(circle at 30% 0%, #fef9c3, #eab308);
}
.criteria-chip--d {
  background: radial-gradient(circle at 30% 0%, #ede9fe, #8b5cf6);
}

.criteria-card h2 {
  margin-bottom: 0.15rem;
}

.criteria-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}

.criteria-callout {
  margin: 0.8rem 0 1rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.95);
  border: 1px dashed rgba(148, 163, 184, 0.65);
}

.criteria-section {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(31, 41, 55, 0.9);
}

.criteria-section:first-of-type {
  border-top: none;
  padding-top: 0.25rem;
}

.criteria-section-title {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.criteria-lead {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0.9rem;
}

.criteria-body-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.4rem;
  margin-top: 0.35rem;
}

.criteria-body-column {
  min-width: 0;
}

.criteria-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.4rem;
  margin-top: 0.9rem;
}

.criteria-mini h4 {
  margin-bottom: 0.35rem;
}

.criteria-quote {
  margin: 0.7rem 0;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(59, 130, 246, 0.55);
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.95),
    rgba(37, 99, 235, 0.2)
  );
}

.criteria-table-wrap {
  margin-top: 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.16), transparent 55%),
    rgba(15, 23, 42, 0.98);
  overflow: auto;
}

.criteria-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 0.85rem;
}

.criteria-table thead {
  background: rgba(15, 23, 42, 0.95);
}

.criteria-table th,
.criteria-table td {
  padding: 0.6rem 0.7rem;
  text-align: left;
  border-bottom: 1px solid rgba(30, 41, 59, 0.9);
}

.criteria-table th {
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
  border-bottom-color: rgba(148, 163, 184, 0.55);
}

.criteria-table tbody tr:nth-child(even) {
  background: rgba(15, 23, 42, 0.85);
}

.criteria-table tbody tr:hover {
  background: rgba(30, 64, 175, 0.4);
}

.criteria-details {
  margin-top: 0.65rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.98);
  overflow: hidden;
}

.criteria-summary {
  list-style: none;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #e5e7eb;
}

.criteria-summary::-webkit-details-marker {
  display: none;
}

.criteria-summary::before {
  content: "▸";
  font-size: 0.7rem;
  color: var(--color-text-soft);
  transition: transform 0.2s ease;
}

.criteria-details[open] .criteria-summary::before {
  transform: rotate(90deg);
}

.criteria-summary:hover {
  background: rgba(30, 64, 175, 0.45);
}

.criteria-details-body {
  padding: 0.7rem 0.9rem 0.9rem;
  border-top: 1px solid rgba(30, 41, 59, 0.9);
}

.criteria-footer {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(30, 41, 59, 0.9);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: flex-start;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: rgba(15, 23, 42, 0.95);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease,
    box-shadow 0.18s ease;
}

.back-to-top:hover {
  color: #e5e7eb;
  background: rgba(37, 99, 235, 0.4);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
}

.criteria-footnote {
  font-size: 0.78rem;
  color: var(--color-text-soft);
}

/* Animations */
@keyframes fade-in-up {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes chip-float {
  0%, 100% {
    transform: translateY(0) translateX(0) rotate(0deg);
    box-shadow: var(--shadow-chip);
  }
  50% {
    transform: translateY(-2px) translateX(1px) rotate(-0.8deg);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 1);
  }
}

@keyframes chip-pop {
  0% {
    transform: scale(0.6) translateY(8px);
    opacity: 0;
  }
  60% {
    transform: scale(1.08) translateY(-2px);
    opacity: 1;
  }
  100% {
    transform: scale(1) translateY(0);
  }
}

@keyframes logo-pop {
  0% {
    opacity: 0;
    transform: translateX(-12px) scale(0.9);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .criteria-page {
    grid-template-columns: minmax(0, 1fr);
  }

  .criteria-sidebar {
    grid-column: 1 / -1;
    order: 2;
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-items: center;
  }

  .sidebar-label {
    flex-basis: 100%;
    margin-bottom: 0.25rem;
  }

  .criteria-hero-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .criteria-body-grid,
  .criteria-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .criteria-card {
    padding: 1.25rem 1.2rem 1.3rem;
  }
}

@media (max-width: 768px) {
  .top-nav {
    padding-inline: 1rem;
    align-items: flex-start;
    gap: 0.35rem;
    padding-top: 0.6rem;
    padding-bottom: 0.4rem;
    height: auto;
  }

  .nav-right {
    width: 100%;
    justify-content: flex-end;
  }

  .criteria-page {
    margin-top: 1rem;
    padding-inline: 1rem;
  }

  .criteria-hero {
    padding: 1.25rem 1.2rem 1.35rem;
  }

  .criteria-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .criteria-toc {
    padding: 1rem 1.1rem;
  }

  .criteria-table-wrap {
    margin-inline: -0.3rem;
  }
}

@media (max-width: 480px) {
  .nav-left .logo {
    font-size: 0.8rem;
  }

  .nav-link {
    padding-inline: 0.6rem;
  }

  .criteria-card-header {
    flex-direction: row;
  }

  .criteria-chip {
    width: 2.1rem;
    height: 2.1rem;
  }
}

@media (min-width: 1600px) {
  .criteria-page {
    max-width: 1600px;
  }
}

@media (min-width: 1800px) {
  .criteria-page {
    max-width: 1800px;
  }
}