/*
Theme Name: Water Data Coalition
Theme URI: https://waterdatacoalition.org
Author: Coalition for Water Data Streamlining
Author URI: https://waterdatacoalition.org
Description: A clean, modern theme for the Coalition for Water Data Streamlining — a California statewide initiative implementing AB 1755.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: water-data-coalition
Tags: one-column, custom-menu, featured-images, translation-ready
*/

/* ===== CSS RESET & BASE ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0 solid #dde3ea;
}

:root {
  /* Color Tokens */
  --color-background: hsl(210, 25%, 97%);
  --color-foreground: hsl(210, 50%, 10%);
  --color-card: hsl(0, 0%, 100%);
  --color-card-foreground: hsl(210, 50%, 10%);
  --color-primary: hsl(205, 100%, 25%);
  --color-primary-foreground: hsl(0, 0%, 100%);
  --color-secondary: hsl(200, 60%, 94%);
  --color-secondary-foreground: hsl(205, 100%, 25%);
  --color-muted: hsl(210, 20%, 93%);
  --color-muted-foreground: hsl(210, 15%, 45%);
  --color-accent: hsl(195, 85%, 40%);
  --color-accent-foreground: hsl(0, 0%, 100%);
  --color-border: hsl(210, 20%, 88%);
  --color-section-alt: hsl(200, 30%, 96%);

  --hero-gradient: linear-gradient(135deg, hsl(205, 100%, 25%) 0%, hsl(195, 85%, 35%) 50%, hsl(190, 70%, 45%) 100%);
  --radius: 0.75rem;

  --font-sans: 'Source Sans 3', system-ui, -apple-system, sans-serif;
  --font-serif: 'Merriweather', Georgia, serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.3;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== UTILITIES ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 1024px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

.section-padding {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

@media (min-width: 768px) {
  .section-padding {
    padding-top: 7rem;
    padding-bottom: 7rem;
  }
}

.section-header {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto 4rem;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-foreground);
}

@media (min-width: 768px) {
  .section-header h2 {
    font-size: 2.25rem;
  }
}

.section-header p {
  margin-top: 1rem;
  color: var(--color-muted-foreground);
  font-size: 1.125rem;
  line-height: 1.75;
}

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

/* ===== NAVBAR ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.site-header .logo img {
  height: 2.5rem;
}

@media (min-width: 768px) {
  .site-header .logo img {
    height: 3rem;
  }
}

.nav-links {
  display: none;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted-foreground);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.mobile-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-foreground);
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--color-border);
  background: var(--color-card);
  padding: 0 1rem 1rem;
}

.mobile-menu.open {
  display: block;
}

@media (min-width: 1024px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu ul {
  list-style: none;
  padding-top: 0.75rem;
}

.mobile-menu a {
  display: block;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted-foreground);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--color-primary);
}

/* ===== HERO ===== */
.hero {
  background: var(--hero-gradient);
  color: var(--color-primary-foreground);
  padding: 6rem 0;
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: 9rem 0;
  }
}

.hero h1 {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.2;
  max-width: 56rem;
  margin: 0 auto;
  text-wrap: balance;
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 3.75rem;
  }
}

.hero p {
  margin-top: 1.5rem;
  font-size: 1.125rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
  font-weight: 300;
}

@media (min-width: 768px) {
  .hero p {
    font-size: 1.25rem;
  }
}

.hero .cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 9999px;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-foreground);
  transition: background-color 0.2s;
}

.hero .cta-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ===== ABOUT ===== */
.features-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

.feature-card .icon-box {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  background: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: 0.5rem;
  font-family: var(--font-sans);
}

.feature-card p {
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

/* ===== WHY ===== */
.reasons-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .reasons-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reasons-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.reason-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.reason-card .icon {
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.reason-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: 0.5rem;
}

.reason-card p {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

/* ===== PARTNERS ===== */
.partners-grid {
  display: grid;
  gap: 2rem;
  max-width: 56rem;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.partner-card {
  border: 1px solid var(--color-border);
  background: var(--color-background);
  border-radius: var(--radius);
  padding: 2rem;
  transition: box-shadow 0.2s;
}

.partner-card:hover {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

.partner-card .role {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.partner-card h3 {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-foreground);
  margin: 0.5rem 0 0.75rem;
}

.partner-card p {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

/* ===== PLAN ===== */
.plan-diagram {
  margin-bottom: 4rem;
  display: flex;
  justify-content: center;
}

.plan-diagram img {
  max-width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-card);
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

@media (min-width: 768px) {
  .plan-diagram img {
    max-width: 48rem;
  }
}

.steps-grid {
  display: grid;
  gap: 1.5rem;
  max-width: 64rem;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.step-card .step-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.5;
  font-family: var(--font-serif);
}

.step-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: 0.25rem;
}

.step-card p {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

/* ===== VISION ===== */
.vision-section {
  background: var(--hero-gradient);
  color: var(--color-primary-foreground);
}

.vision-section .section-header h2 {
  color: var(--color-primary-foreground);
}

.vision-section .section-header p {
  color: var(--color-primary-foreground);
  opacity: 0.9;
}

.vision-grid {
  display: grid;
  gap: 2rem;
  max-width: 56rem;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .vision-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.vision-card {
  text-align: center;
}

.vision-card .icon {
  margin: 0 auto 1rem;
  opacity: 0.8;
}

.vision-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.vision-card p {
  font-size: 0.875rem;
  opacity: 0.8;
  line-height: 1.7;
}

/* ===== WHITE PAPERS ===== */
.papers-grid {
  display: grid;
  gap: 1.5rem;
  max-width: 56rem;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .papers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.paper-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.paper-card:hover {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  border-color: rgba(25, 150, 180, 0.3);
}

.paper-card .icon-box {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.25rem;
  color: var(--color-primary);
}

.paper-card .date {
  font-size: 0.75rem;
  color: var(--color-muted-foreground);
}

.paper-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: 0.25rem;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.paper-card:hover h3 {
  color: var(--color-primary);
}

.paper-card .external-icon {
  opacity: 0;
  transition: opacity 0.2s;
}

.paper-card:hover .external-icon {
  opacity: 1;
}

.paper-card p {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  line-height: 1.7;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  gap: 3rem;
  max-width: 64rem;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 2fr 3fr;
  }
}

.contact-info .info-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-info .info-item .icon {
  color: var(--color-accent);
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.contact-info h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-foreground);
  font-size: 0.875rem;
}

.contact-info p {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
}

.contact-form .form-row {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .contact-form .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--color-foreground);
  margin-bottom: 1rem;
  outline: none;
  transition: box-shadow 0.2s;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--color-muted-foreground);
}

.contact-form input:focus,
.contact-form textarea:focus {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.contact-form textarea {
  resize: none;
}

.contact-form .submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 0.5rem;
  background: var(--color-primary);
  color: var(--color-primary-foreground);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.contact-form .submit-btn:hover {
  opacity: 0.9;
}

/* ===== FOOTER ===== */
.site-footer {
  background-color: var(--color-foreground);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0;
}

.site-footer .footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .site-footer .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.site-footer .footer-logo img {
  height: 2rem;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.site-footer .copyright {
  font-size: 0.875rem;
  opacity: 0.6;
  text-align: center;
}

.site-footer .footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.site-footer .footer-links a:hover {
  color: #fff;
}

/* ===== SVG ICON HELPERS ===== */
.icon-svg {
  width: 1.25rem;
  height: 1.25rem;
  display: inline-block;
  vertical-align: middle;
}

.icon-svg-lg {
  width: 1.75rem;
  height: 1.75rem;
}

.icon-svg-xl {
  width: 2.25rem;
  height: 2.25rem;
}

/* ===== SCREEN READER ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}