/* Projects Page Styles (refreshed, simplified, modern) */
/* Color scheme extracted from navbar-bg.png - Nature & Science palette */

:root {
  --p-bg: #f8fbfc;
  --p-surface: rgba(255, 255, 255, 0.92);
  --p-surface-solid: #ffffff;
  --p-text: #263238;
  --p-muted: #607d8b;
  --p-border: rgba(38, 50, 56, 0.12);
  --p-shadow: 0 16px 40px rgba(38, 50, 56, 0.14);
  --p-shadow-soft: 0 8px 24px rgba(38, 50, 56, 0.08);
  --p-accent: #3498db;
  --p-accent-2: #27ae60;
  --p-accent-3: #17a2b8;
  --p-ring: rgba(52, 152, 219, 0.28);
  --p-radius: 16px;
  --p-radius-sm: 10px;
  --p-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Visually Hidden Helper */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

body {
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(52, 152, 219, 0.12), transparent 60%),
    radial-gradient(900px 650px at 85% 10%, rgba(39, 174, 96, 0.10), transparent 55%),
    radial-gradient(600px 400px at 50% 100%, rgba(197, 225, 165, 0.12), transparent 50%),
    var(--p-bg);
}

main {
  padding-bottom: 4rem;
}

/* Projects Header */
.projects-header {
  padding: 4.25rem 0 2.75rem;
  text-align: center;
  border-bottom: 1px solid var(--p-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.65)),
    radial-gradient(1000px 400px at 50% 0%, rgba(37, 99, 235, 0.16), transparent 55%);
}

.page-title {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 0.75rem;
  color: var(--p-text);
}

.page-title::after {
  content: "";
  display: block;
  width: 92px;
  height: 6px;
  border-radius: 999px;
  margin: 1rem auto 0;
  background: linear-gradient(90deg, var(--p-accent), var(--p-accent-2));
  opacity: 0.9;
}

.page-description {
  font-size: 1.08rem;
  color: var(--p-muted);
  max-width: 72ch;
  margin: 0 auto;
  line-height: 1.7;
}

/* Donate Project Button */
.donate-project-btn {
  margin-top: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--p-accent) 0%, var(--p-accent-2) 100%);
  color: #ffffff;
  padding: 0.85rem 1.75rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 250ms ease, box-shadow 250ms ease;
  box-shadow: 0 4px 20px rgba(52, 152, 219, 0.25);
}

.donate-project-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(52, 152, 219, 0.35);
}

/* Filters Section */
.filters {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--p-border);
  background: transparent;
}

.filters .container {
  position: relative;
}

.filter-controls {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 1rem;
  align-items: end;
  padding: 1rem;
  border: 1px solid var(--p-border);
  border-radius: var(--p-radius);
  background: var(--p-surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--p-shadow-soft);
}

.search-container {
  min-width: 0;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--p-border);
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--p-surface-solid);
  color: var(--p-text);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.search-input::placeholder {
  color: rgba(91, 101, 115, 0.9);
}

.search-input:focus {
  outline: none;
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 4px var(--p-ring);
}

.filter-group {
  display: grid;
  gap: 0.5rem;
}

.filter-label {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: rgba(91, 101, 115, 0.95);
}

.filter-select {
  width: 100%;
  padding: 0.85rem 2.25rem 0.85rem 1rem;
  border: 1px solid var(--p-border);
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--p-surface-solid);
  color: var(--p-text);
  cursor: pointer;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 20 20'%3E%3Cpath fill='%23606B7A' d='M5.5 7.5a1 1 0 0 1 1.4 0L10 10.6l3.1-3.1a1 1 0 1 1 1.4 1.4l-3.8 3.8a1 1 0 0 1-1.4 0L5.5 8.9a1 1 0 0 1 0-1.4Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
}

.filter-select:focus {
  outline: none;
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 4px var(--p-ring);
}

.results-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1rem;
}

.results-count {
  font-size: 0.95rem;
  color: var(--p-muted);
}

.clear-filters {
  padding: 0.6rem 0.95rem;
  background: rgba(37, 99, 235, 0.08);
  color: rgba(37, 99, 235, 0.95);
  border: 1px solid rgba(37, 99, 235, 0.22);
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 650;
  cursor: pointer;
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.clear-filters:hover {
  transform: translateY(-1px);
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.34);
}

.clear-filters:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--p-ring);
}

.clear-filters:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* Projects Grid */
.projects-grid {
  padding: 2.25rem 0 3rem;
  min-height: 400px;
}

.projects-grid .container {
  padding: 0 1.5rem;
}

.projects-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  min-height: 200px;
}

.projects-container:empty::after {
  content: "Loading projects...";
  display: block;
  text-align: center;
  color: var(--p-muted);
  padding: 3rem 0;
  font-size: 1rem;
}

.project-card {
  position: relative;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--p-border);
  border-radius: var(--p-radius);
  padding: 1.15rem;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-color 180ms ease;
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.16), rgba(124, 58, 237, 0.12));
  opacity: 0;
  transition: opacity 180ms ease;
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--p-shadow);
  border-color: rgba(37, 99, 235, 0.26);
}

.project-card:hover::before {
  opacity: 1;
}

.project-card:focus-within {
  outline: none;
  box-shadow: 0 0 0 4px var(--p-ring), var(--p-shadow);
  border-color: rgba(37, 99, 235, 0.35);
}

.project-content {
  position: relative;
  display: grid;
  gap: 1rem;
}

.project-info {
  min-width: 0;
}

.project-name {
  font-size: 1.1rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  color: var(--p-text);
}

.project-name a {
  color: inherit;
  text-decoration: none;
}

.project-name a:hover {
  color: rgba(37, 99, 235, 0.96);
}

.project-description {
  color: rgba(55, 65, 81, 0.85);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-meta {
  display: grid;
  gap: 0.9rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tag {
  padding: 0.32rem 0.65rem;
  background: rgba(15, 23, 42, 0.04);
  color: rgba(55, 65, 81, 0.86);
  border: 1px solid rgba(15, 23, 42, 0.09);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-license {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(55, 65, 81, 0.72);
  font-size: 0.9rem;
}

.license-badge {
  padding: 0.32rem 0.6rem;
  background: rgba(16, 185, 129, 0.12);
  color: rgba(5, 150, 105, 0.95);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  border: 1px solid rgba(16, 185, 129, 0.18);
  letter-spacing: 0.01em;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.62rem 0.85rem;
  border-radius: 12px;
  font-weight: 750;
  font-size: 0.9rem;
  text-decoration: none;
  color: rgba(37, 99, 235, 0.98);
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.18);
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.project-link:hover {
  transform: translateY(-1px);
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.28);
}

.project-link:focus {
  outline: none;
  box-shadow: 0 0 0 4px var(--p-ring);
}

/* No Results State */
.no-results {
  text-align: center;
  padding: 4rem 1.5rem;
  color: var(--p-muted);
}

.no-results h3 {
  font-size: 1.45rem;
  margin-bottom: 0.75rem;
  color: var(--p-text);
  letter-spacing: -0.02em;
}

.no-results p {
  font-size: 1rem;
}

/* Responsive */
@media (max-width: 860px) {
  .filter-controls {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .projects-header {
    padding: 3.5rem 0 2.25rem;
  }
  .filter-controls {
    padding: 0.9rem;
  }
  .project-card {
    padding: 1.05rem;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Dark mode - System preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --p-bg: #1a252f;
    --p-surface: rgba(38, 50, 56, 0.72);
    --p-surface-solid: rgba(38, 50, 56, 0.95);
    --p-text: rgba(255, 255, 255, 0.92);
    --p-muted: rgba(176, 196, 206, 0.7);
    --p-border: rgba(144, 164, 174, 0.18);
    --p-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    --p-shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.35);
    --p-ring: rgba(93, 173, 226, 0.35);
  }

  :root:not([data-theme="light"]) body {
    background:
      radial-gradient(1200px 700px at 15% -10%, rgba(93, 173, 226, 0.18), transparent 60%),
      radial-gradient(900px 650px at 85% 10%, rgba(88, 214, 141, 0.14), transparent 55%),
      radial-gradient(600px 400px at 50% 100%, rgba(118, 215, 196, 0.10), transparent 50%),
      var(--p-bg);
  }

  :root:not([data-theme="light"]) .projects-header {
    background:
      linear-gradient(180deg, rgba(38, 50, 56, 0.92), rgba(38, 50, 56, 0.62)),
      radial-gradient(1000px 400px at 50% 0%, rgba(93, 173, 226, 0.18), transparent 55%);
  }

  :root:not([data-theme="light"]) .project-card {
    background: rgba(38, 50, 56, 0.78);
  }

  :root:not([data-theme="light"]) .project-description {
    color: rgba(226, 232, 240, 0.78);
  }

  :root:not([data-theme="light"]) .project-tag {
    background: rgba(93, 173, 226, 0.12);
    border-color: rgba(93, 173, 226, 0.22);
    color: #85c1e9;
  }

  :root:not([data-theme="light"]) .license-badge {
    background: rgba(88, 214, 141, 0.16);
    border-color: rgba(88, 214, 141, 0.22);
  }
}

/* Dark mode - Manual toggle */
[data-theme="dark"] {
  --p-bg: #1a252f;
  --p-surface: rgba(38, 50, 56, 0.72);
  --p-surface-solid: rgba(38, 50, 56, 0.95);
  --p-text: rgba(255, 255, 255, 0.92);
  --p-muted: rgba(176, 196, 206, 0.7);
  --p-border: rgba(144, 164, 174, 0.18);
  --p-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --p-shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.35);
  --p-ring: rgba(93, 173, 226, 0.35);
}

[data-theme="dark"] body {
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(93, 173, 226, 0.18), transparent 60%),
    radial-gradient(900px 650px at 85% 10%, rgba(88, 214, 141, 0.14), transparent 55%),
    radial-gradient(600px 400px at 50% 100%, rgba(118, 215, 196, 0.10), transparent 50%),
    #1a252f;
}

[data-theme="dark"] .projects-header {
  background:
    linear-gradient(180deg, rgba(38, 50, 56, 0.92), rgba(38, 50, 56, 0.62)),
    radial-gradient(1000px 400px at 50% 0%, rgba(93, 173, 226, 0.18), transparent 55%);
}

[data-theme="dark"] .project-card {
  background: rgba(38, 50, 56, 0.78);
}

[data-theme="dark"] .project-description {
  color: rgba(226, 232, 240, 0.78);
}

[data-theme="dark"] .project-tag {
  background: rgba(93, 173, 226, 0.12);
  border-color: rgba(93, 173, 226, 0.22);
  color: #85c1e9;
}

[data-theme="dark"] .license-badge {
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(16, 185, 129, 0.22);
}

[data-theme="dark"] .page-title {
  color: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .page-description {
  color: rgba(226, 232, 240, 0.7);
}

[data-theme="dark"] .donate-project-btn {
  background: linear-gradient(135deg, #5dade2 0%, #58d68d 100%);
  box-shadow: 0 4px 20px rgba(93, 173, 226, 0.3);
}

[data-theme="dark"] .donate-project-btn:hover {
  box-shadow: 0 6px 25px rgba(93, 173, 226, 0.4);
}

[data-theme="dark"] .filter-controls {
  background: rgba(38, 50, 56, 0.72);
}

[data-theme="dark"] .search-input,
[data-theme="dark"] .filter-select {
  background-color: rgba(38, 50, 56, 0.95);
  color: rgba(255, 255, 255, 0.92);
  border-color: rgba(144, 164, 174, 0.18);
}

[data-theme="dark"] .project-name {
  color: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .project-link {
  background: rgba(93, 173, 226, 0.12);
  border-color: rgba(93, 173, 226, 0.22);
  color: #85c1e9;
}

[data-theme="dark"] .project-link:hover {
  background: rgba(93, 173, 226, 0.22);
  border-color: rgba(93, 173, 226, 0.35);
}

/* Light mode - Manual toggle (for when user's system is dark but they want light) */
[data-theme="light"] {
  --p-bg: #f8fbfc;
  --p-surface: rgba(255, 255, 255, 0.95);
  --p-surface-solid: #ffffff;
  --p-text: #263238;
  --p-muted: #607d8b;
  --p-border: rgba(38, 50, 56, 0.12);
  --p-shadow: 0 16px 40px rgba(38, 50, 56, 0.12);
  --p-shadow-soft: 0 8px 24px rgba(38, 50, 56, 0.08);
  --p-ring: rgba(52, 152, 219, 0.28);
}

[data-theme="light"] body {
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(52, 152, 219, 0.12), transparent 60%),
    radial-gradient(900px 650px at 85% 10%, rgba(39, 174, 96, 0.10), transparent 55%),
    radial-gradient(600px 400px at 50% 100%, rgba(197, 225, 165, 0.12), transparent 50%),
    #f8fbfc;
}

[data-theme="light"] .projects-header {
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(248, 250, 252, 0.75)),
    radial-gradient(1000px 400px at 50% 0%, rgba(37, 99, 235, 0.12), transparent 55%);
  border-bottom-color: rgba(15, 23, 42, 0.1);
}

[data-theme="light"] .page-title {
  color: #263238;
  background: linear-gradient(135deg, #263238 0%, #3498db 50%, #27ae60 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .page-description {
  color: #475569;
}

[data-theme="light"] .donate-project-btn {
  background: linear-gradient(135deg, #3498db 0%, #27ae60 100%);
  box-shadow: 0 4px 20px rgba(52, 152, 219, 0.25);
}

[data-theme="light"] .donate-project-btn:hover {
  box-shadow: 0 6px 25px rgba(52, 152, 219, 0.35);
}

[data-theme="light"] .filter-controls {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(15, 23, 42, 0.12);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .filter-label {
  color: #374151;
}

[data-theme="light"] .search-input,
[data-theme="light"] .filter-select {
  background-color: #ffffff;
  color: #1f2937;
  border-color: rgba(15, 23, 42, 0.15);
}

[data-theme="light"] .search-input::placeholder {
  color: #9ca3af;
}

[data-theme="light"] .results-count {
  color: #6b7280;
}

[data-theme="light"] .project-card {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(15, 23, 42, 0.1);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .project-card:hover {
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.12);
  border-color: rgba(37, 99, 235, 0.3);
}

[data-theme="light"] .project-name {
  color: #0f172a;
}

[data-theme="light"] .project-description {
  color: #475569;
}

[data-theme="light"] .project-tag {
  background: rgba(52, 152, 219, 0.08);
  border-color: rgba(52, 152, 219, 0.18);
  color: #3498db;
}

[data-theme="light"] .license-badge {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: #059669;
}

[data-theme="light"] .project-link {
  background: rgba(52, 152, 219, 0.08);
  border-color: rgba(52, 152, 219, 0.2);
  color: #3498db;
}

[data-theme="light"] .project-link:hover {
  background: rgba(52, 152, 219, 0.15);
  border-color: rgba(52, 152, 219, 0.35);
}

/* Print */
@media print {
  body {
    background: #fff !important;
  }
  .site-header,
  .filters,
  .no-results {
    display: none !important;
  }
  .projects-grid {
    padding: 0 !important;
  }
  .projects-container {
    display: block !important;
  }
  .project-card {
    break-inside: avoid;
    box-shadow: none !important;
    background: #fff !important;
    border: 1px solid #ccc !important;
    margin: 0 0 1rem 0;
  }
}