/* Updated: Centering fix v2 */

/* Theme 1: Terminal Dark (Default) - Hacker aesthetic */
.reveal.theme-terminal {
    --r-background-color: #0d1117;
    --r-main-font: 'Monaco', 'Courier New', monospace;
    --r-heading-font: 'Monaco', 'Courier New', monospace;
    --r-main-color: #58a6ff;
    --r-heading-color: #8ce99a;
    --r-link-color: #79c0ff;
    --r-link-color-hover: #a5d6ff;
    --r-selection-background-color: #1f6feb;
    --r-code-font: 'Monaco', monospace;
}

.reveal.theme-terminal .slides section {
    border: 2px solid #30363d;
    background: rgba(13, 17, 23, 0.95);
}

.reveal.theme-terminal h1::before,
.reveal.theme-terminal h2::before {
    content: '> ';
    color: #8ce99a;
}

.reveal.theme-terminal pre {
    background: #161b22;
    border: 1px solid #30363d;
}

.reveal.theme-terminal code {
    background: #161b22;
    color: #c9d1d9;
}

/* Theme 2: Nix Blue - Clean and professional */
.reveal.theme-nix {
    --r-background-color: #f5f7fa;
    --r-main-font: 'Inter', 'Segoe UI', system-ui, sans-serif;
    --r-heading-font: 'Inter', 'Segoe UI', system-ui, sans-serif;
    --r-main-color: #2c3e50;
    --r-heading-color: #5277c3;
    --r-link-color: #7ebae4;
    --r-link-color-hover: #5277c3;
    --r-selection-background-color: #5277c3;
    --r-code-font: 'Fira Code', monospace;
}

.reveal.theme-nix {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.reveal.theme-nix .slides section {
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.reveal.theme-nix h1,
.reveal.theme-nix h2 {
    font-weight: 700;
    border-bottom: 3px solid #5277c3;
    padding-bottom: 0.3em;
}

.reveal.theme-nix pre {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.reveal.theme-nix code {
    background: #f8f9fa;
    color: #5277c3;
}

/* Theme 3: Solarized Light - Easy on the eyes */
.reveal.theme-solarized {
    --r-background-color: #fdf6e3;
    --r-main-font: 'Source Sans Pro', sans-serif;
    --r-heading-font: 'Source Sans Pro', sans-serif;
    --r-main-color: #657b83;
    --r-heading-color: #268bd2;
    --r-link-color: #2aa198;
    --r-link-color-hover: #859900;
    --r-selection-background-color: #eee8d5;
    --r-code-font: 'Source Code Pro', monospace;
}

.reveal.theme-solarized .slides section {
    background: #fdf6e3;
    border: 1px solid #eee8d5;
}

.reveal.theme-solarized pre {
    background: #eee8d5;
    border: 1px solid #d3cbb7;
}

.reveal.theme-solarized code {
    background: #eee8d5;
    color: #268bd2;
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

/* Theme 4: Dracula - Vibrant dark mode */
.reveal.theme-dracula {
    --r-background-color: #282a36;
    --r-main-font: 'Helvetica Neue', Helvetica, sans-serif;
    --r-heading-font: 'Helvetica Neue', Helvetica, sans-serif;
    --r-main-color: #f8f8f2;
    --r-heading-color: #ff79c6;
    --r-link-color: #8be9fd;
    --r-link-color-hover: #50fa7b;
    --r-selection-background-color: #44475a;
    --r-code-font: 'Fira Code', monospace;
}

.reveal.theme-dracula {
    background: linear-gradient(135deg, #282a36 0%, #44475a 100%);
}

.reveal.theme-dracula h1,
.reveal.theme-dracula h2 {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.reveal.theme-dracula pre {
    background: #1e1f29;
    border: 1px solid #44475a;
}

.reveal.theme-dracula code {
    background: #44475a;
    color: #50fa7b;
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

/* Theme 5: Nord - Minimalist arctic */
.reveal.theme-nord {
    --r-background-color: #2e3440;
    --r-main-font: 'Roboto', sans-serif;
    --r-heading-font: 'Roboto Slab', serif;
    --r-main-color: #eceff4;
    --r-heading-color: #88c0d0;
    --r-link-color: #81a1c1;
    --r-link-color-hover: #5e81ac;
    --r-selection-background-color: #4c566a;
    --r-code-font: 'JetBrains Mono', monospace;
}

.reveal.theme-nord .slides section {
    background: rgba(46, 52, 64, 0.95);
    border-left: 4px solid #88c0d0;
}

.reveal.theme-nord pre {
    background: #3b4252;
    border: 1px solid #4c566a;
}

.reveal.theme-nord code {
    background: #3b4252;
    color: #8fbcbb;
}

.reveal.theme-nord .fragment.highlight-current-blue.current-fragment {
    color: #88c0d0;
}

.reveal.theme-nord strong {
    color: #88c0d0;
}

/* Theme selector UI - Floating overlay */
#theme-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.85);
    padding: 12px 18px;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    pointer-events: auto;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    transition: all 0.3s ease;
    isolation: isolate;
}

#theme-selector:hover {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.2);
}

/* Ensure theme selector doesn't interfere with presentation */
body {
    margin: 0;
    padding: 0;
}

.reveal {
    pointer-events: auto;
}

#theme-selector label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    margin-right: 10px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-weight: 500;
    letter-spacing: 0.3px;
}

#theme-selector select {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-weight: 500;
}

#theme-selector select:hover {
    background: white;
    border-color: rgba(88, 166, 255, 0.5);
}

#theme-selector select:focus {
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.4);
    border-color: rgba(88, 166, 255, 0.8);
}

/* Adaptive styling based on presentation theme */
.reveal.has-dark-background ~ #theme-selector {
    background: rgba(0, 0, 0, 0.85);
}

.reveal.has-light-background ~ #theme-selector {
    background: rgba(0, 0, 0, 0.75);
}

/* Large screen readability - 100" at 15 feet */
.reveal {
    font-size: 38px;
}

.reveal h1 {
    font-size: 2.5em;
    font-weight: 700;
    margin-bottom: 0.5em;
}

.reveal h2 {
    font-size: 2em;
    font-weight: 700;
    margin-bottom: 0.5em;
}

.reveal h3 {
    font-size: 1.5em;
    margin-bottom: 0.4em;
}

.reveal p {
    line-height: 1.5;
    margin: 0.5em 0;
}

.reveal li {
    margin: 0.4em 0;
    line-height: 1.5;
}

.reveal ul, .reveal ol {
    text-align: left;
}

.reveal pre {
    font-size: 0.65em;
}

.reveal code {
    font-size: 0.9em;
}

.reveal small {
    font-size: 0.7em;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    #theme-selector {
        top: 10px;
        right: 10px;
        padding: 8px;
    }

    #theme-selector label {
        display: none;
    }

    #theme-selector select {
        font-size: 12px;
        padding: 4px 8px;
    }
}