/* Material Design 3 Design System
 * Imports Google Fonts and defines CSS custom properties for Material Design 3
 */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700&family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=swap');

/* CSS Custom Properties - Material Design 3 Colors */
:root {
  /* Primary Family */
  --color-primary: #003e1e;
  --color-primary-container: #1a5632;
  --color-primary-fixed: #b2f1c1;
  --color-primary-fixed-dim: #97d5a6;
  --color-on-primary: #ffffff;
  --color-on-primary-container: #8dca9c;
  --color-on-primary-fixed: #00210e;
  --color-on-primary-fixed-variant: #14512e;
  --color-inverse-primary: #97d5a6;

  /* Secondary Family */
  --color-secondary: #7f5605;
  --color-secondary-container: #fdc66f;
  --color-secondary-fixed: #ffddaf;
  --color-secondary-fixed-dim: #f4bd68;
  --color-on-secondary: #ffffff;
  --color-on-secondary-container: #775000;
  --color-on-secondary-fixed: #281800;
  --color-on-secondary-fixed-variant: #614000;

  /* Tertiary Family */
  --color-tertiary: #5f2101;
  --color-tertiary-container: #7d3714;
  --color-tertiary-fixed: #ffdbcd;
  --color-tertiary-fixed-dim: #ffb596;
  --color-on-tertiary: #ffffff;
  --color-on-tertiary-container: #ffa780;
  --color-on-tertiary-fixed: #360f00;
  --color-on-tertiary-fixed-variant: #76320f;

  /* Surface & Neutrals */
  --color-surface: #f9f9ff;
  --color-surface-bright: #f9f9ff;
  --color-surface-dim: #d0daef;
  --color-surface-container: #e6eeff;
  --color-surface-container-low: #eff3ff;
  --color-surface-container-high: #dee9fd;
  --color-surface-container-highest: #d9e3f7;
  --color-surface-container-lowest: #ffffff;
  --color-surface-variant: #d9e3f7;
  --color-surface-tint: #2f6a44;
  --color-on-surface: #121c2a;
  --color-on-surface-variant: #404941;
  --color-background: #f9f9ff;
  --color-on-background: #121c2a;

  /* Error Family */
  --color-error: #ba1a1a;
  --color-error-container: #ffdad6;
  --color-on-error: #ffffff;
  --color-on-error-container: #93000a;

  /* Outline & Inverse */
  --color-outline: #717971;
  --color-outline-variant: #c0c9bf;
  --color-inverse-surface: #273140;
  --color-inverse-on-surface: #ebf1ff;

  /* Typography Sizes */
  --font-family-display: "Plus Jakarta Sans", sans-serif;
  --font-family-headline: "Plus Jakarta Sans", sans-serif;
  --font-family-title: "Plus Jakarta Sans", sans-serif;
  --font-family-body: "Inter", sans-serif;
  --font-family-label: "Inter", sans-serif;
}

/* Body and General Typography */
body {
  font-family: var(--font-family-body);
  color: var(--color-on-surface);
  background-color: var(--color-surface);
}

/* Heading Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headline);
  font-weight: 600;
  color: var(--color-on-surface);
}

h1 {
  font-size: 2rem;
  font-weight: 700;
}

h2 {
  font-size: 1.75rem;
  font-weight: 700;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

h5 {
  font-size: 1.125rem;
  font-weight: 600;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

/* Material Symbols Outlined Icon Font */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* Filled variant for Material Symbols — use on icons that should render solid */
.icon-filled {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* Glass Morphism Utility */
.glass-effect {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 0.5rem;
}

/* Glass Navigation Utility */
.glass-nav {
  background: rgba(9, 22, 32, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Link Styling */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: var(--color-primary-container);
}

/* Button Base Styling */
button,
.button {
  font-family: var(--font-family-label);
  font-weight: 600;
  border-radius: 0.25rem;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
}

/* Input and Form Elements */
input,
textarea,
select {
  font-family: var(--font-family-body);
  border-radius: 0.125rem;
  border: 1px solid var(--color-outline);
  padding: 0.5rem;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 62, 30, 0.1);
}

/* Utility Classes for Surface Containers */
.surface-container {
  background-color: var(--color-surface-container);
}

.surface-container-high {
  background-color: var(--color-surface-container-high);
}

.surface-container-low {
  background-color: var(--color-surface-container-low);
}

.surface-dim {
  background-color: var(--color-surface-dim);
}

/* Text Color Utilities */
.text-on-surface {
  color: var(--color-on-surface);
}

.text-on-surface-variant {
  color: var(--color-on-surface-variant);
}

.text-on-primary {
  color: var(--color-on-primary);
}

/* Error State Utilities */
.text-error {
  color: var(--color-error);
}

.bg-error-container {
  background-color: var(--color-error-container);
}

/* Hero gradient overlay (news detail) */
.hero-gradient {
  background: linear-gradient(to top, rgba(0, 62, 30, 0.85), rgba(0, 62, 30, 0.25) 50%, transparent);
}

/* Resources page hero gradient (135deg diagonal, primary) */
.resources-hero-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
}

/* Editorial drop-cap for CMS article body */
.article-body > p:first-of-type::first-letter {
  float: left;
  font-size: 4rem;
  line-height: 0.85;
  padding-right: 0.625rem;
  padding-top: 0.25rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-family-headline);
}

/* Article body typography */
.article-body > p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
  color: var(--color-on-surface);
}

.article-body > h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-family: var(--font-family-headline);
}

.article-body > h3 {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-family-headline);
}

.article-body > blockquote {
  border-left: 4px solid var(--color-secondary);
  padding-left: 1.5rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  background: var(--color-surface-container-low);
  border-radius: 0 0.5rem 0.5rem 0;
  margin: 2rem 0;
  font-style: italic;
  font-weight: 500;
  font-size: 1.125rem;
  color: var(--color-on-surface);
}

.article-body img {
  border-radius: 0.75rem;
  margin: 2rem 0;
  width: 100%;
  height: auto;
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-body a:hover {
  color: var(--color-secondary);
}

/* Editorial underline link — animated accent bar */
.editorial-underline {
  position: relative;
}

.editorial-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width 0.3s ease;
}

.editorial-underline:hover::after {
  width: 100%;
}

/* Projects page: hero section spacing (clears fixed header + generous breathing room) */
.projects-hero {
  min-height: 85vh;
  padding-top: 10rem;
  padding-bottom: 10rem;
}

/* Projects page: hide scrollbar on horizontal filter tabs */
.projects-scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.projects-scrollbar-hide::-webkit-scrollbar {
  display: none;
}