/* GREEN Charter Schools Design System — theme.css */
/* Daylight + Night-grid rooms, OKLCH spark accent ramp, energy motif, accessibility-first */

:root {
  /* BASE PALETTE */
  --forest-green: #157a47;
  --forest-dark: #0a2a1c;
  --white: #ffffff;
  --parchment: #f1faf6;

  /* OKLCH SPARK ACCENT RAMP (electric teal-cyan) */
  /* Derived from teal hue ~184° in OKLCH, stepped L from 0.97→0.22, chroma auto-fitted to sRGB */
  --spark-50: #ecfeff;   /* pale cyan */
  --spark-100: #cffafe;  /* very light cyan */
  --spark-200: #a5f3fc;  /* light cyan */
  --spark-300: #67e8f9;  /* bright cyan */
  --spark-400: #22d3ee;  /* vivid cyan */
  --spark-500: #06b6c4;  /* signature electric teal-cyan */
  --spark-600: #0891a2;  /* deeper teal */
  --spark-700: #0e7490;  /* dark teal (5.4:1 text on white) */
  --spark-800: #155e6b;  /* very dark teal */
  --spark-900: #164e57;  /* near-black teal */

  /* GRAYS */
  --gray-50: #f8f7f5;
  --gray-100: #efe8e4;
  --gray-200: #e2d5c9;
  --gray-300: #d4c5b9;
  --gray-400: #a89a8e;
  --gray-500: #7f7469;
  --gray-600: #5a544a;
  --gray-700: #3d3a36;
  --gray-800: #2a2824;

  /* DAYLIGHT ROOM (default) */
  --bg-primary: var(--white);
  --bg-secondary: var(--parchment);
  --text-primary: #13241c;
  --text-secondary: #445049;
  --text-light: #4b5a52;
  --text-forest: #14653a;
  --border-color: var(--gray-200);

  /* NIGHT GRID ROOM (dark band accent) */
  --night-bg: var(--forest-dark);
  --night-text: #c8f0e0;     /* luminous mint, 12.5:1 on night-bg */
  --night-accent: #34e0e8;   /* luminous cyan, 9.5:1 on dark */

  /* SPACING */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-base: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* TYPE SCALE (Figtree body: 16px base, 1.25 ratio) */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.5rem;      /* 24px */
  --text-2xl: 1.875rem;   /* 30px */

  /* DISPLAY SCALE (Bricolage Grotesque) */
  --text-display-sm: 2.25rem;  /* 36px */
  --text-display-md: 3rem;      /* 48px */
  --text-display-lg: 3.75rem;   /* 60px */

  /* LINE HEIGHT */
  --lh-tight: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.75;

  /* SHADOWS */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);

  /* TRANSITIONS */
  --transition-fast: 150ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 300ms ease-out;

  /* Z-INDEX STACK */
  --z-below: -1;
  --z-base: 0;
  --z-lifted: 10;
  --z-modal: 100;
}

/* RESET & NORMALIZATION */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 700;
  line-height: var(--lh-tight);
  color: var(--text-primary);
}

h1 {
  font-size: var(--text-display-md);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: var(--text-display-sm);
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-base);
}

h4, h5, h6 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-base);
}

p {
  margin-bottom: var(--space-lg);
  line-height: var(--lh-relaxed);
}

a {
  color: var(--text-forest);
  text-decoration: none;
  border-bottom: 1px solid var(--spark-400);
  transition: color var(--transition-base), border-color var(--transition-base);
}

a:hover {
  color: #14653a;
  border-bottom-color: #14653a;
}

a:focus-visible {
  outline: 2px solid var(--spark-500);
  outline-offset: 2px;
}

/* LISTS */
ul, ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-lg);
}

li {
  margin-bottom: var(--space-sm);
}

/* SPARK BULLET LIST (energy motif) */
.spark-list li {
  list-style: none;
  position: relative;
  padding-left: var(--space-xl);
}

.spark-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 0.5rem;
  height: 0.5rem;
  background: radial-gradient(circle at 30% 30%, var(--spark-300), var(--spark-500));
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(6, 182, 196, 0.4);
}

/* ACCESSIBILITY: FOCUS RINGS */
:focus-visible {
  outline: 2px solid var(--spark-500);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--spark-500);
  outline-offset: 2px;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  min-height: 44px;
  min-width: 44px;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: #13693c;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #0f5132;
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--spark-500);
  outline-offset: 2px;
}

.btn-secondary {
  background-color: #13693c;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: #0f5132;
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-forest);
  border: 2px solid var(--forest-green);
}

.btn-ghost:hover {
  background-color: var(--forest-green);
  color: var(--white);
}

/* NIGHT GRID BUTTON */
.night-grid .btn-primary {
  background-color: var(--spark-500);
  color: #0a2a1c;
}

.night-grid .btn-primary:hover {
  background-color: var(--spark-400);
  color: #0a2a1c;
}

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

/* INPUT FIELDS */
input[type="text"],
input[type="email"],
input[type="search"],
input[type="password"],
input[type="number"],
textarea,
select {
  font-family: inherit;
  font-size: var(--text-base);
  padding: var(--space-sm) var(--space-base);
  border: 2px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  min-height: 44px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="search"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--spark-500);
  box-shadow: 0 0 0 3px rgba(6, 182, 196, 0.1);
}

textarea {
  min-height: 120px;
  font-family: inherit;
}

/* CARDS */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--spark-400);
  box-shadow: var(--shadow-md);
}

.card h3 {
  color: var(--text-forest);
  margin-bottom: var(--space-base);
}

/* CONTAINER & LAYOUT */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  width: 100%;
}

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

.section-spacious {
  padding: var(--space-3xl) 0;
}

/* GRID UTILITIES */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ENERGY DIVIDER (animated on scroll, gated behind prefers-reduced-motion) */
.energy-divider {
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    var(--spark-300) 10%,
    var(--spark-400) 30%,
    var(--spark-500) 50%,
    var(--spark-400) 70%,
    var(--spark-300) 90%,
    transparent
  );
  margin: var(--space-2xl) 0;
  position: relative;
}

@media (prefers-reduced-motion: no-preference) {
  .energy-divider {
    animation: energy-flow 3s ease-in-out infinite;
  }

  @keyframes energy-flow {
    0%, 100% {
      opacity: 0.6;
    }
    50% {
      opacity: 1;
    }
  }
}

/* NIGHT GRID ROOM (dark band for Ask GREEN + proof section) */
.night-grid {
  background-color: var(--night-bg);
  color: var(--night-text);
}

.night-grid h1,
.night-grid h2,
.night-grid h3,
.night-grid h4,
.night-grid h5,
.night-grid h6 {
  color: var(--white);
}

.night-grid a {
  color: var(--night-accent);
  border-bottom-color: var(--night-accent);
}

.night-grid a:hover {
  color: var(--spark-200);
  border-bottom-color: var(--spark-200);
}

.night-grid .btn-secondary {
  background-color: var(--white);
  color: var(--night-bg);
}

.night-grid .btn-secondary:hover {
  background-color: var(--spark-100);
}

/* PROTO BANNER */
.proto-banner {
  background-color: #ecfeff;
  color: #0a2a1c;
  padding: var(--space-sm) var(--space-base);
  text-align: center;
  font-size: var(--text-sm);
  line-height: var(--lh-normal);
  border-bottom: 2px solid var(--spark-300);
}

.proto-banner strong {
  color: #0f5132;
}

.proto-banner a {
  color: #0f5132;
  border-bottom-color: #0f5132;
}

/* SKIP LINK */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--forest-green);
  color: white;
  padding: var(--space-base);
  z-index: var(--z-modal);
  text-decoration: none;
  border: none;
}

.skip-link:focus {
  top: 0;
}

/* HEADER & NAV */
header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: var(--z-lifted);
}

.util-bar {
  background-color: var(--bg-secondary);
  padding: var(--space-sm) var(--space-base);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.util-bar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.util-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.util-links a {
  font-size: var(--text-sm);
  border: none;
}

.lang {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.lang label {
  font-weight: 600;
}

.lang select {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  min-height: auto;
}

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

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-lg);
  color: var(--text-primary);
  font-weight: 700;
  border: none;
}

.brand:hover {
  border: none;
}

.brand img {
  max-height: 50px;
  width: auto;
}

.wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.org {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: var(--text-lg);
  color: var(--text-forest);
  font-weight: 700;
  line-height: 1.1;
}

.tag {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 400;
  font-family: 'Figtree', sans-serif;
  line-height: 1.1;
}

.header-actions {
  display: flex;
  gap: var(--space-base);
  align-items: center;
}

.header-search {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex: 1 1 340px;
  min-width: 340px;
  max-width: 460px;
  min-height: 44px;
}

.header-search input {
  flex: 1;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  padding: var(--space-sm) var(--space-base);
  font-size: var(--text-sm);
}

.header-search button {
  padding: var(--space-sm) var(--space-base);
  background-color: var(--spark-500);
  color: #0a2a1c;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  white-space: nowrap;
}

.header-search button:hover {
  background-color: var(--spark-600);
}

#answer-area {
  scroll-margin-top: 96px;
}

/* PRIMARY NAV */
.primary-nav {
  padding: var(--space-base) 0;
  border-top: 1px solid var(--border-color);
}

.primary-nav ul {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin: 0;
  list-style: none;
  flex-wrap: wrap;
}

.primary-nav a {
  display: inline-block;
  padding: var(--space-sm) var(--space-base);
  color: var(--text-forest);
  border: none;
  font-weight: 600;
  font-size: var(--text-sm);
  position: relative;
  transition: color var(--transition-base);
}

.primary-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--spark-500);
  transition: width var(--transition-base);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-forest);
  font-size: var(--text-lg);
  font-weight: 700;
  padding: var(--space-sm);
}

/* FOOTER */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-2xl) 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: var(--space-3xl);
}

footer .wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
}

footer h3 {
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-base);
}

footer a {
  color: var(--text-forest);
  border-bottom: 1px solid var(--spark-300);
  font-size: var(--text-sm);
}

footer a:hover {
  color: #14653a;
  border-bottom-color: #14653a;
}

.footer-stoa-disclaimer {
  grid-column: 1 / -1;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-xs);
  color: var(--text-light);
}

/* MAIN CONTENT */
main {
  min-height: calc(100vh - 200px);
}

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

/* RESPONSIVE GRIDS */
.hero-grid {
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

/* RESPONSIVE: TABLET & MOBILE */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

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

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

  h3 {
    font-size: var(--text-lg);
  }

  .wrap {
    padding: 0 var(--space-base);
  }

  .header-top {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .header-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .header-search {
    max-width: 100%;
  }

  .primary-nav ul {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .util-bar .wrap {
    flex-direction: column;
    text-align: center;
  }

  .util-links {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav ul {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .primary-nav[aria-expanded="true"] ul {
    max-height: 500px;
  }

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

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

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

/* PRINT STYLES */
@media print {
  .proto-banner,
  header,
  footer,
  .nav-toggle {
    display: none;
  }

  body {
    color: black;
    background: white;
  }

  a {
    text-decoration: underline;
  }
}