/* Primed Community Platform — Light-Mode Design System */
/* Version: 1.1 | Source: PRIMED_PLATFORM_DEVELOPMENT_PLAN.md §2 */

@import url('https://fonts.googleapis.com/css2?family=Syncopate:wght@700&family=Rajdhani:wght@300;400;500;600;700&family=DM+Mono:wght@300;400&display=swap');

:root {
  /* Backgrounds — Light Mode */
  --bg-0: #FAFBFD;
  --bg-1: #F0F2F7;
  --bg-2: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-elevated: #FFFFFF;

  /* Text — Dark on Light */
  --text-0: #1A1D2E;
  --text-1: #4A5068;
  --text-2: #8B92A8;

  /* Kingdom Colours (Primed Palette) */
  --monera:   #0081BA;
  --protista: #3CB3A5;
  --fungi:    #FFB03F;
  --plantae:  #472675;
  --animalia: #E85D75;

  /* Kingdom Glows */
  --glow-monera:   rgba(0, 129, 186, 0.15);
  --glow-protista: rgba(60, 179, 165, 0.15);
  --glow-fungi:    rgba(255, 176, 63, 0.15);
  --glow-plantae:  rgba(71, 38, 117, 0.15);
  --glow-animalia: rgba(232, 93, 117, 0.15);

  /* Kingdom Gradients */
  --gradient-monera:   linear-gradient(135deg, #0081BA, #3CB3A5);
  --gradient-protista: linear-gradient(135deg, #3CB3A5, #0081BA);
  --gradient-fungi:    linear-gradient(135deg, #FFB03F, #E85D75);
  --gradient-plantae:  linear-gradient(135deg, #472675, #0081BA);
  --gradient-animalia: linear-gradient(135deg, #E85D75, #FFB03F);

  /* Accents */
  --border: #E2E6EF;
  --border-active: #CBD0DE;
  --success: #3CB3A5;
  --warning: #FFB03F;
  --error: #E85D75;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 29, 46, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 29, 46, 0.08);
  --shadow-lg: 0 8px 24px rgba(26, 29, 46, 0.12);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
}

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

body {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 400;
  color: var(--text-1);
  background: var(--bg-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--plantae); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--monera); }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.2;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: var(--space-sm); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

.hero-title {
  font-family: 'Syncopate', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: clamp(1.6rem, 5vw, 3rem);
}

.section-label {
  font-family: 'DM Mono', monospace;
  font-weight: 300;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-2);
  margin-bottom: var(--space-xs);
}

.mono {
  font-family: 'DM Mono', monospace;
  font-weight: 300;
}

p + p { margin-top: var(--space-sm); }

/* ── Layout ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background: var(--bg-1);
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.flex { display: flex; gap: var(--space-md); }
.flex-center { align-items: center; justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.text-center { text-align: center; }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
  .section { padding: var(--space-xl) 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
}

/* ── Navigation ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 251, 253, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Syncopate', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--plantae);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.nav-brand-icon {
  width: 28px;
  height: 28px;
  background: var(--gradient-plantae);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-1);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--glow-plantae);
  color: var(--plantae);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-0);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm);
  }
}

/* ── Footer ── */
.site-footer {
  background: var(--text-0);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer-brand {
  font-family: 'Syncopate', sans-serif;
  font-size: 0.8rem;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

.footer-tagline {
  font-size: 0.85rem;
  line-height: 1.5;
}

.footer-links h4 {
  color: white;
  font-size: 0.85rem;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links ul {
  list-style: none;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  line-height: 2;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1200px;
  margin: var(--space-lg) auto 0;
  padding: var(--space-sm) var(--space-md) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.7rem;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-md); }
  .footer-bottom { flex-direction: column; gap: var(--space-xs); text-align: center; }
}

/* ── Cards ── */
.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-active);
}

.card--lift:hover {
  transform: translateY(-3px);
}

.card[data-kingdom="monera"]   { border-left: 3px solid var(--monera); }
.card[data-kingdom="protista"] { border-left: 3px solid var(--protista); }
.card[data-kingdom="fungi"]    { border-left: 3px solid var(--fungi); }
.card[data-kingdom="plantae"]  { border-left: 3px solid var(--plantae); }
.card[data-kingdom="animalia"] { border-left: 3px solid var(--animalia); }

.card--top-accent[data-kingdom="monera"]   { border-left: none; border-top: 3px solid var(--monera); }
.card--top-accent[data-kingdom="protista"] { border-left: none; border-top: 3px solid var(--protista); }
.card--top-accent[data-kingdom="fungi"]    { border-left: none; border-top: 3px solid var(--fungi); }
.card--top-accent[data-kingdom="plantae"]  { border-left: none; border-top: 3px solid var(--plantae); }
.card--top-accent[data-kingdom="animalia"] { border-left: none; border-top: 3px solid var(--animalia); }

.card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.card-text {
  font-size: 0.9rem;
  color: var(--text-2);
}

/* ── Kingdom Badges ── */
.kingdom-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.kingdom-badge.monera   { background: var(--glow-monera);   color: var(--monera); }
.kingdom-badge.protista { background: var(--glow-protista); color: var(--protista); }
.kingdom-badge.fungi    { background: var(--glow-fungi);    color: var(--fungi); }
.kingdom-badge.plantae  { background: var(--glow-plantae);  color: var(--plantae); }
.kingdom-badge.animalia { background: var(--glow-animalia); color: var(--animalia); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary {
  background: var(--plantae);
  color: white;
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-0);
}

.btn--outline:hover {
  border-color: var(--plantae);
  color: var(--plantae);
}

.btn--monera   { background: var(--monera);   color: white; }
.btn--protista { background: var(--protista); color: white; }
.btn--fungi    { background: var(--fungi);    color: var(--text-0); }
.btn--plantae  { background: var(--plantae);  color: white; }
.btn--animalia { background: var(--animalia); color: white; }

/* ── Stat Cards ── */
.stat {
  text-align: center;
  padding: var(--space-md);
}

.stat-value {
  font-family: 'DM Mono', monospace;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--text-0);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-2);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Hero ── */
.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-2);
  font-weight: 300;
  max-width: 600px;
  margin: var(--space-sm) 0 var(--space-lg);
}

/* ── Page Header ── */
.page-header {
  padding: var(--space-xl) 0;
  text-align: center;
  background: var(--bg-1);
}

.page-header h1 {
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--text-2);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Pathway / Flow ── */
.pathway {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.pathway-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-sm);
  min-width: 140px;
}

.pathway-step-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: var(--space-xs);
  color: white;
}

.pathway-arrow {
  font-size: 1.5rem;
  color: var(--text-2);
}

@media (max-width: 768px) {
  .pathway { flex-direction: column; }
  .pathway-arrow { transform: rotate(90deg); }
}

/* ── Forms ── */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: var(--space-xs);
  color: var(--text-0);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.95rem;
  background: var(--bg-2);
  color: var(--text-0);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--plantae);
  box-shadow: 0 0 0 3px var(--glow-plantae);
}

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

/* ── Tier Visual ── */
.tier-strip {
  display: flex;
  gap: 2px;
  border-radius: 8px;
  overflow: hidden;
  margin: var(--space-sm) 0;
}

.tier-segment {
  flex: 1;
  padding: var(--space-sm);
  text-align: center;
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ── Utilities ── */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}