/* Custom Theme for Jaringan Komputer Presentations */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --accent-color: #ffc107;
  --text-main: #333;
  --text-muted: #666;
  --bg-light: #f8f9fa;
  --border-color: #dee2e6;
  --font-family-sans: 'Inter', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

.reveal {
  font-family: var(--font-family-sans);
  color: var(--text-main);
}

.reveal h1, .reveal h2, .reveal h3, .reveal h4, .reveal h5, .reveal h6 {
  font-family: var(--font-family-sans);
  font-weight: 700;
  text-transform: none;
  color: var(--text-main);
}

/* Footer Branding */
.footer-branding {
  position: absolute;
  bottom: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  box-sizing: border-box;
  z-index: 10;
  font-size: 0.5em;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.9);
  border-top: 1px solid var(--border-color);
}

.footer-logos img {
  height: 30px;
  margin-right: 15px;
  vertical-align: middle;
}

/* Titles */
.title-box {
  background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  margin-bottom: 20px;
}

.title-box h1 {
  color: #2c3e50;
  margin-bottom: 10px;
  font-size: 2.2em;
}

.title-box .subtitle {
  color: #34495e;
  font-size: 1.2em;
  font-weight: 400;
}

/* Flex Layouts */
.flex-container {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.flex-col {
  flex: 1;
}

.card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  margin-bottom: 15px;
}

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-small { font-size: 0.7em; line-height: 1.5; }
.text-smaller { font-size: 0.6em; line-height: 1.5; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.divider-vertical {
  width: 2px;
  background-color: var(--border-color);
  margin: 0 10px;
}

/* Custom List */
.reveal ul {
  list-style-type: disc;
  padding-left: 1.2em;
}

.reveal li {
  margin-bottom: 0.5em;
}

/* Highlight Text */
.highlight-blue { color: var(--primary-color); font-weight: bold; }
.highlight-orange { color: #fd7e14; font-weight: bold; }
.highlight-green { color: #28a745; font-weight: bold; }
.highlight-red { color: #dc3545; font-weight: bold; }

/* Code Blocks */
.reveal pre {
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  border-radius: 6px;
}

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  top: 15px;
  right: 15px;
  z-index: 20;
  background: none;
  border: none;
  font-size: 1.2em;
  cursor: pointer;
  color: var(--text-muted);
}
.theme-toggle:hover { color: var(--primary-color); }

/* Dark Mode Data Attribute */
[data-theme="dark"] .reveal {
  color: #eee;
  background: #222;
}
[data-theme="dark"] .reveal h1, [data-theme="dark"] .reveal h2, [data-theme="dark"] .reveal h3, [data-theme="dark"] .reveal h4 {
  color: #fff;
}
[data-theme="dark"] .card {
  background: #333;
  border-color: #444;
  color: #eee;
}
[data-theme="dark"] .title-box {
  background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
}
[data-theme="dark"] .title-box h1, [data-theme="dark"] .title-box .subtitle {
  color: #fff;
}
[data-theme="dark"] .footer-branding {
  background: rgba(34, 34, 34, 0.9);
  border-top-color: #444;
  color: #ccc;
}
[data-theme="dark"] .sec-body,
[data-theme="dark"] .media-card {
  background: #2a2a2a !important;
  color: #eee !important;
  border-color: #444 !important;
}
[data-theme="dark"] .info-box {
  background: #1a365d !important;
  color: #e2e8f0 !important;
  border-color: #2a4365 !important;
}
[data-theme="dark"] .info-box-warn {
  background: #4a3000 !important;
  color: #fbd38d !important;
  border-color: #744210 !important;
}
[data-theme="dark"] .info-box-green {
  background: #0f3a1f !important;
  color: #c6f6d5 !important;
  border-color: #22543d !important;
}
[data-theme="dark"] .reveal table th {
  background: #1a365d !important;
  color: #fff !important;
}
[data-theme="dark"] .reveal table tr:nth-child(even) td {
  background: #222 !important;
}
[data-theme="dark"] .reveal table td {
  border-color: #555 !important;
}