/* =================================
   OMNIVERSE™ GLOBAL STYLE SYSTEM — 100% LOCK FINAL EDITION
   Production-Safe • Accessible • Responsive • Multi-Page Stable
   ================================= */

/* =================================
   RESET & BASE
   ================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0b0f1a;
  --bg-elevated: #121826;
  --bg-nav: rgba(0, 0, 0, 0.68);
  --text: #ffffff;
  --text-soft: #a0a8c0;
  --text-muted: #6b7280;
  --text-label: #c0c6e4;
  --text-heading-soft: #cbd3ff;
  --border-soft: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.05);
  --accent-1: #4da6ff;
  --accent-2: #7f5cff;
  --accent-solid: #7f5cff;
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-focus: 0 0 0 3px rgba(127, 92, 255, 0.25);
  --radius-card: 18px;
  --radius-btn: 12px;
  --nav-height: 76px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* =================================
   MEDIA DEFAULTS
   ================================= */
img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

/* =================================
   TYPOGRAPHY SYSTEM
   ================================= */
h1,
h2,
h3 {
  margin-top: 0;
  margin-bottom: 10px;
  letter-spacing: 0.4px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 1.75rem);
}

h3 {
  font-size: clamp(1.1rem, 2.4vw, 1.25rem);
  color: var(--text-heading-soft);
}

p {
  margin-top: 0;
  color: var(--text-soft);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95em;
}

/* =================================
   LINK SYSTEM
   ================================= */
a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: 8px;
}

/* =================================
   NAVBAR SYSTEM
   ================================= */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background: var(--bg-nav);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: var(--nav-height);
  border-bottom: 1px solid var(--border-soft);
}

.nav b {
  display: inline-block;
  font-size: 18px;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.nav div:last-child {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px 16px;
}

.nav a {
  color: var(--text);
  font-size: 14px;
  transition: color 0.25s ease, opacity 0.25s ease;
  opacity: 0.92;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent-solid);
  opacity: 1;
}

/* =================================
   HERO SECTION
   ================================= */
.hero {
  text-align: center;
  padding: 120px 20px 100px;
}

.hero h1 {
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 720px;
  margin: 20px auto 0;
  font-size: 16px;
}

/* =================================
   BUTTON SYSTEM
   ================================= */
.btn {
  margin-top: 25px;
  padding: 14px 30px;
  border: 0;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: var(--text);
  display: inline-block;
  font-weight: 600;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: transform 0.25s ease, opacity 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

/* =================================
   LAYOUT SYSTEM
   ================================= */
.section {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 90px 20px;
}

.card {
  background: var(--bg-elevated);
  padding: 32px;
  border-radius: var(--radius-card);
  margin-top: 22px;
  border: 1px solid var(--border-card);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(127, 92, 255, 0.14);
}

/* =================================
   FORM ELEMENTS
   ================================= */
label {
  display: block;
  margin-top: 15px;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-label);
  font-weight: 500;
}

input,
button,
textarea,
select {
  font: inherit;
}

input[type="range"] {
  width: 100%;
  margin: 0 0 15px;
  accent-color: var(--accent-solid);
  cursor: pointer;
}

input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  margin-bottom: 14px;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

::placeholder {
  color: rgba(160, 168, 192, 0.7);
}

/* =================================
   DATA DISPLAY
   ================================= */
#score,
#decision,
#result {
  margin-top: 15px;
}

#decision {
  color: var(--accent-solid);
}

/* =================================
   TABLE SYSTEM
   ================================= */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  overflow: hidden;
  border-radius: 12px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid #1c2436;
  font-size: 14px;
}

th {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

td {
  color: var(--text-soft);
}

/* =================================
   LIST SYSTEM
   ================================= */
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul li {
  padding: 12px;
  border-bottom: 1px solid #1c2436;
}

/* =================================
   CHART CONTAINERS
   ================================= */
canvas {
  width: 100% !important;
  height: auto !important;
  max-width: 100%;
}

.card canvas {
  min-height: 280px;
}

/* =================================
   ANIMATION SYSTEM
   ================================= */
.fade {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade.show {
  opacity: 1;
  transform: translateY(0);
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade,
  .fade.show,
  .card,
  .btn,
  .nav a {
    transition: none !important;
    transform: none !important;
  }
}

/* =================================
   FOOTER
   ================================= */
footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 13px;
}

/* =================================
   UTILITY HELPERS
   ================================= */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.center {
  text-align: center;
}

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

/* =================================
   RESPONSIVE DESIGN
   ================================= */
@media (max-width: 768px) {
  .nav {
    align-items: flex-start;
    padding: 16px 18px;
  }

  .nav div:last-child {
    width: 100%;
    justify-content: flex-start;
  }

  .hero {
    padding: 90px 16px 70px;
  }

  .section {
    padding: 60px 15px;
  }

  .card {
    padding: 24px;
  }

  .card canvas {
    min-height: 220px;
  }
}

@media (max-width: 480px) {
  .nav b {
    font-size: 16px;
  }

  .nav a {
    font-size: 13px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  th,
  td {
    font-size: 13px;
    padding: 10px 12px;
  }
}