/* Glassy, modern, minimal UI for Prompt Engineering Resource Hub */
/* Light/Dark mode variables */
:root {
  --primary: #00e6ff;
  --accent: #ff9800;
  --bg: #10131a;
  --glass: rgba(0,230,255,0.08);
  --glass-border: rgba(0,230,255,0.18);
  --white: #fff;
  --text: #ccefff;
  --radius: 18px;
  --shadow: 0 4px 32px rgba(0,230,255,0.10);
}

[data-theme="light"] {
  --primary: #0077ff;
  --accent: #ff9800;
  --bg: #f7faff;
  --glass: rgba(0,119,255,0.07);
  --glass-border: rgba(0,119,255,0.13);
  --white: #222;
  --text: #222;
  --shadow: 0 4px 32px rgba(0,119,255,0.08);
}
/* Theme toggle button */
.theme-toggle {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 100;
  background: var(--glass);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.5em;
  cursor: pointer;
  box-shadow: 0 2px 12px var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.theme-toggle:hover, .theme-toggle:focus {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  outline: none;
}
html, body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
.hero {
  background: linear-gradient(135deg, #00e6ff22 0%, #ff980022 100%);
  padding: 64px 0 32px 0;
  text-align: center;
  box-shadow: var(--shadow);
}
.hero-content h1 {
  font-size: 2.8em;
  color: var(--white);
  margin-bottom: 0.2em;
  letter-spacing: 1px;
}
.hero-content p {
  font-size: 1.2em;
  color: var(--text);
  margin-bottom: 1.5em;
}
.btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  padding: 12px 28px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 12px var(--glass-border);
  transition: background 0.2s, color 0.2s, transform 0.1s;
  margin: 0.5em 0.5em 0 0;
}
.btn:hover, .btn:focus {
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: var(--white);
  outline: none;
  transform: translateY(-2px) scale(1.03);
}
.resources-section {
  max-width: 1100px;
  margin: 40px auto 0 auto;
  padding: 32px 18px 48px 18px;
  background: var(--glass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.resources-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
}
.resources-header h2 {
  flex: 1 1 100%;
  margin: 0 0 8px 0;
  color: var(--white);
}
#resourceSearch {
  flex: 1 1 220px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1.5px solid var(--glass-border);
  background: rgba(255,255,255,0.10);
  color: var(--white);
  font-size: 1em;
  outline: none;
  margin-bottom: 8px;
}
#resourceSearch:focus {
  border: 1.5px solid var(--primary);
  box-shadow: 0 4px 24px var(--glass-border);
}
.resources-categories {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.resource-cat-btn {
  font-size: 1em;
  padding: 8px 18px;
  border-radius: 12px;
  background: var(--glass);
  color: var(--primary);
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  margin-bottom: 6px;
}
.resource-cat-btn.active, .resource-cat-btn:hover {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
}
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-bottom: 28px;
}
.resource-card {
  background: var(--glass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px 18px 18px;
  position: relative;
  border: 2px solid transparent;
  transition: box-shadow 0.2s, border 0.2s, transform 0.2s;
  min-height: 120px;
}
.resource-card.featured {
  border: 2px solid var(--accent);
  background: rgba(255,152,0,0.10);
}
.resource-card .resource-cat {
  display: inline-block;
  font-size: 0.9em;
  color: var(--primary);
  background: var(--glass);
  border-radius: 8px;
  padding: 2px 10px;
  margin-bottom: 8px;
}
.resource-card .resource-title {
  font-size: 1.1em;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--white);
}
.resource-card .resource-desc {
  font-size: 0.98em;
  color: var(--text);
  margin-bottom: 10px;
}
.resource-card .resource-link {
  color: var(--primary);
  text-decoration: underline;
  font-weight: 500;
  transition: color 0.2s;
}
.resource-card .resource-link:hover {
  color: var(--accent);
}
.resource-card .resource-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: var(--white);
  border-radius: 8px;
  font-size: 0.85em;
  padding: 2px 8px;
  margin-left: 8px;
  font-weight: bold;
}
.resource-submit {
  background: var(--glass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px 12px 18px;
  margin: 0 auto 24px auto;
  max-width: 500px;
  text-align: center;
}
.resource-submit input, .resource-submit select {
  width: 48%;
  margin: 6px 1%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1.5px solid var(--glass-border);
  background: rgba(255,255,255,0.10);
  color: var(--white);
  font-size: 1em;
  outline: none;
  transition: border 0.2s, box-shadow 0.2s;
  margin-bottom: 8px;
}
.resource-submit input:focus, .resource-submit select:focus {
  border: 1.5px solid var(--primary);
  box-shadow: 0 4px 24px var(--glass-border);
}
.resource-submit button {
  margin-top: 8px;
  width: 100%;
}
#resourceSubmitMsg {
  margin-top: 8px;
  color: var(--primary);
  font-size: 1em;
}
footer {
  text-align: center;
  color: var(--text);
  padding: 32px 0 16px 0;
  font-size: 1em;
  background: transparent;
}
@media (max-width: 700px) {
  .resources-section {
    padding: 12px 2vw 32px 2vw;
  }
  .resources-header {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .resources-grid {
    grid-template-columns: 1fr;
  }
  .resource-submit input, .resource-submit select {
    width: 98%;
    margin: 6px 0;
  }
}