* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Theme Variables */
:root[data-theme="classic"], :root {
    --bg-color: #0a0e14;
    --text-color: #00ff00;
    --text-dim: #00cc00;
    --prompt-color: #00dd00;
    --link-color: #00ffff;
    --error-color: #ff0000;
    --success-color: #00ff00;
    --content-bg: #f5f5f5;
    --content-text: #1a1a1a;
    --content-heading: #2c5aa0;
    --content-border: #00ff00;
}

:root[data-theme="amber"] {
    --bg-color: #1a1100;
    --text-color: #ffb000;
    --text-dim: #cc8800;
    --prompt-color: #ffcc00;
    --link-color: #ffdd88;
    --error-color: #ff4444;
    --success-color: #ffb000;
    --content-bg: #fffbf0;
    --content-text: #2a1a00;
    --content-heading: #cc6600;
    --content-border: #ffb000;
}

:root[data-theme="blue"] {
    --bg-color: #000814;
    --text-color: #00d9ff;
    --text-dim: #0099cc;
    --prompt-color: #00bbff;
    --link-color: #88ddff;
    --error-color: #ff3366;
    --success-color: #00ff88;
    --content-bg: #ffffff;
    --content-text: #000000;
    --content-heading: #0066cc;
    --content-border: #00d9ff;
}

:root[data-theme="light"] {
    --bg-color: #f8f9fa;
    --text-color: #1a5f3f;
    --text-dim: #2d7a54;
    --prompt-color: #0d4028;
    --link-color: #0066cc;
    --error-color: #dc3545;
    --success-color: #28a745;
    --content-bg: #ffffff;
    --content-text: #212529;
    --content-heading: #0d4028;
    --content-border: #28a745;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Courier New', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Top Navigation */
.top-nav {
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    border-bottom: 2px solid var(--text-color);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.nav-left {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-right {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--text-color);
    padding: 8px 14px;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
}

.nav-btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 255, 0, 0.3);
}

.nav-btn-home {
    font-weight: bold;
    border-width: 2px;
}

.nav-btn-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 0, 0.4);
}

/* Theme Menu */
#theme-menu {
    position: absolute;
    top: 45px;
    right: 0;
    background-color: var(--bg-color);
    border: 2px solid var(--text-color);
    border-radius: 5px;
    padding: 10px;
    min-width: 180px;
    z-index: 1001;
}

#theme-menu.hidden {
    display: none;
}

#theme-menu button {
    display: block;
    width: 100%;
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--text-color);
    padding: 8px 12px;
    margin: 5px 0;
    cursor: pointer;
    border-radius: 3px;
    font-family: inherit;
    font-size: 13px;
}

#theme-menu button:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* ASCII Art Title */
.ascii-art {
    color: var(--prompt-color);
    font-size: 10px;
    line-height: 1.2;
    margin-bottom: 20px;
    text-align: center;
    white-space: pre;
    overflow-x: auto;
}

/* Mobile Title - hidden by default */
.mobile-title {
    display: none;
    text-align: center;
    padding: 20px;
    margin-bottom: 30px;
    border: 2px solid var(--prompt-color);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    font-family: 'SF Mono', 'Monaco', 'Consolas', 'Courier New', monospace;
    position: relative;
    overflow: hidden;
}

/* CRT scanline effect - REDUCED OPACITY for better readability */
.mobile-title::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.03),
        rgba(0, 0, 0, 0.03) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 1;
}

.mobile-title h1,
.mobile-title .subtitle,
.mobile-title .dates,
.mobile-title .mobile-instructions {
    position: relative;
    z-index: 2;
}

.mobile-title h1 {
    font-size: 24px;
    margin: 0 0 10px 0;
    color: var(--prompt-color);
    font-weight: bold;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--prompt-color);
}

.mobile-title .subtitle {
    font-size: 16px;
    margin: 0 0 15px 0;
    color: var(--text-color);
}

.mobile-title .dates {
    font-size: 14px;
    margin: 0;
    color: var(--text-dim);
    padding-top: 10px;
    border-top: 1px solid var(--text-dim);
}

.mobile-title .mobile-instructions {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--text-dim);
    font-size: 14px;
}

.mobile-title .mobile-instructions p {
    margin: 5px 0;
}

#terminal {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    padding-top: 80px;
    min-height: 100vh;
}

#output {
    margin-bottom: 20px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.output-block {
    margin-bottom: 10px;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.command-echo {
    color: var(--text-color);
    margin-bottom: 5px;
    font-weight: bold;
    opacity: 0.8;
}

.command-echo .prompt {
    color: var(--prompt-color);
}

/* Content Display Area */
#content-display {
    background-color: var(--content-bg);
    color: var(--content-text);
    border: 3px solid var(--content-border);
    border-radius: 8px;
    padding: 40px;
    margin: 20px 0 30px 0;
    max-height: 70vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.4s ease-out;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    font-size: 16px;
    line-height: 1.6;
}

#content-display.hidden {
    display: none;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Content title - always visible */
#content-display .content-title {
    color: var(--content-heading);
    font-size: 36px;
    font-weight: 700;
    margin: 0 0 30px 0;
    padding-bottom: 15px;
    border-bottom: 4px solid var(--content-border);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.content-body {
    /* Container for the actual content */
}

/* Content Styling - Normal HTML appearance */
#content-display .content-body h1 {
    color: var(--content-heading);
    font-size: 28px;
    font-weight: 700;
    margin-top: 20px;
    margin-bottom: 20px;
    border-bottom: 3px solid var(--content-border);
    padding-bottom: 12px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#content-display h2 {
    color: var(--content-heading);
    font-size: 26px;
    font-weight: 600;
    margin-top: 30px;
    margin-bottom: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#content-display h3 {
    color: var(--content-heading);
    font-size: 20px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

#content-display p {
    margin-bottom: 16px;
    line-height: 1.8;
}

#content-display ul, #content-display ol {
    margin-left: 30px;
    margin-bottom: 16px;
}

#content-display li {
    margin-bottom: 8px;
}

#content-display a {
    color: var(--content-heading);
    text-decoration: underline;
}

#content-display a:hover {
    opacity: 0.7;
}

#content-display strong {
    font-weight: 700;
    color: var(--content-heading);
}

#content-display em {
    font-style: italic;
}

#content-display code {
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

#content-display pre {
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    padding: 16px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 16px;
}

#content-display pre code {
    background: none;
    border: none;
    padding: 0;
}

#content-display table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

#content-display th, #content-display td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

#content-display th {
    background-color: #f0f0f0;
    font-weight: 700;
}

#content-display blockquote {
    border-left: 4px solid var(--content-border);
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    color: #666;
}

/* Details/Summary styling */
#content-display details {
    margin-bottom: 16px;
}

#content-display summary {
    cursor: pointer;
    font-weight: 600;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 5px;
    user-select: none;
}

#content-display summary:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

#content-display details[open] > summary {
    margin-bottom: 12px;
}

/* Content maximize button */
#content-display {
    position: relative; /* For absolute positioning of button */
}

.content-maximize-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--content-bg);
    color: var(--content-heading);
    border: 2px solid var(--content-border);
    padding: 8px 12px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    z-index: 10;
    transition: all 0.2s;
    line-height: 1;
}

.content-maximize-btn:hover {
    background-color: var(--content-border);
    color: var(--content-bg);
    transform: scale(1.1);
}

/* Maximized state */
#content-display.maximized {
    position: fixed;
    top: 60px; /* Below nav */
    left: 0;
    right: 0;
    bottom: 0;
    max-height: none;
    margin: 0;
    border-radius: 0;
    z-index: 999;
    animation: maximize 0.3s ease-out;
}

@keyframes maximize {
    from {
        transform: scale(0.95);
        opacity: 0.8;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Hide input line when maximized */
/* #content-display.maximized ~ .input-line {
    display: none;
} */

/* Button Styles for Content Areas */

/* Primary Button - for main CTAs like registration */
#content-display .btn-primary,
.btn-primary {
    display: inline-block;
    background-color: var(--content-heading);
    color: var(--content-bg);
    border: 2px solid var(--content-heading);
    padding: 12px 24px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

#content-display .btn-primary:hover,
.btn-primary:hover {
    background-color: var(--content-bg);
    color: var(--content-heading);
    border-color: var(--content-heading);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Secondary Button - for less prominent actions */
#content-display .btn-secondary,
.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--content-heading);
    border: 2px solid var(--content-heading);
    padding: 12px 24px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

#content-display .btn-secondary:hover,
.btn-secondary:hover {
    background-color: var(--content-heading);
    color: var(--content-bg);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Terminal Style Button - matches the CLI aesthetic */
#content-display .btn-terminal,
.btn-terminal {
    display: inline-block;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 2px solid var(--text-color);
    padding: 12px 24px;
    font-family: 'Courier New', 'Monaco', monospace;
    font-size: 14px;
    font-weight: bold;
    text-decoration: none;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

#content-display .btn-terminal:hover,
.btn-terminal:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 255, 0, 0.3);
}

/* Button sizing variants */
.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

/* Section Links */
.section-link {
    font-size: 0.7em;
    opacity: 0.4;
    text-decoration: none;
    margin-left: 8px;
}

.section-link:hover {
    opacity: 1;
}

.error {
    color: var(--error-color);
    font-weight: bold;
}

.success {
    color: var(--success-color);
    font-weight: bold;
}

.help-text {
    color: var(--text-dim);
}

/* Enhanced Prompt - MORE PROMINENT */
.input-line {
    display: flex;
    align-items: center;
    margin-top: 30px;
    padding: 15px;
    background-color: var(--bg-color);
    border: 2px solid var(--prompt-color);
    border-radius: 8px;
    position: sticky;
    bottom: 10px;
    box-shadow: 0 4px 12px rgba(0, 255, 0, 0.2);
    z-index: 100;
}

.prompt {
    color: var(--prompt-color);
    margin-right: 12px;
    font-weight: bold;
    font-size: 16px;
    white-space: nowrap;
}

#command-input {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: inherit;
    font-size: 16px;
    font-weight: bold;
    outline: none;
    flex: 1;
    caret-color: var(--text-color);
}

#command-input::placeholder {
    color: var(--text-dim);
    opacity: 0.6;
    font-style: italic;
}

#command-input::selection {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Make help / output text selectable and show text cursor */
#output,
#output * ,
#output .output-block,
#output .help-text,
#output .command-echo,
#output pre,
#output code,
#content-display,
#content-display .content-body,
#content-display .content-body * {
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    user-select: text !important;
    cursor: text;
}

/* Keep interactive controls non-selectable to avoid accidental selection */
.nav-btn,
#theme-toggle,
#theme-menu,
.input-line,
#command-input,
.content-maximize-btn,
.section-link,
summary {
    -webkit-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    user-select: none !important;
}

/* Make links in output/selectable content visually distinct and clickable */
#output a,
#content-display a,
#output .help-text a
#content-display .content-body a {
    color: var(--link-color);
    text-decoration: underline;
    cursor: pointer !important;
}

/* Ensure selection cursor remains text and selection allowed */
#output, #content-display, #content-display .content-body {
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    user-select: text !important;
    cursor: text !important;
}

/* Pulse animation for inactive input */
@keyframes pulse {
    0%, 100% {
        border-color: var(--prompt-color);
        box-shadow: 0 4px 12px rgba(0, 255, 0, 0.2);
    }
    50% {
        border-color: var(--text-color);
        box-shadow: 0 4px 20px rgba(0, 255, 0, 0.4);
    }
}

.input-line.pulse,
#command-input.pulse {
    animation: pulse 1s ease-in-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        font-size: 13px;
    }
    
    #terminal {
        padding: 5px;
        padding-top: 10px;
    }
    
    .top-nav {
        padding: 5px;
        gap: 3px;
        position: relative;
    }
    
    .nav-left {
        gap: 3px;
    }
    
    .nav-btn {
        font-size: 10px;
        padding: 5px 8px;
        white-space: nowrap;
    }
    
    /* Hide icons on mobile to save space */
    .nav-btn {
        font-size: 11px;
    }
    
    /* Scale ASCII art to fit on small screens */
    .ascii-art {
        font-size: 6px;
        line-height: 1.1;
        transform-origin: top center;
        max-width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 5px;
    }
    
    /* Hide welcome box on mobile, show mobile title instead */
    .output-block.welcome-box {
        display: none !important;
    }
    
    /* Show mobile title on mobile (unless .hidden) */
    .mobile-title:not(.hidden) {
        display: block !important;
    }
    
    #content-display {
        padding: 15px;
        max-height: 70vh;
        font-size: 14px;
        margin-top: 10px;
    }
    
    #content-display .content-title {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    #content-display .content-body h1 {
        font-size: 18px;
    }
    
    #content-display h2 {
        font-size: 16px;
    }
    
    #content-display h3 {
        font-size: 15px;
    }

    .btn-primary,
    .btn-secondary,
    .btn-terminal {
        width: 100%;
        padding: 14px 20px;
    }
    
    .input-line {
        padding: 8px;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        margin: 0;
        border-radius: 0;
    }
    
    .prompt {
        font-size: 12px;
    }
    
    #command-input {
        font-size: 13px;
    }
}

/* Extra small screens - scale ASCII art even more */
@media (max-width: 480px) {
    .ascii-art {
        font-size: 4px;
        line-height: 1.05;
    }
}

@media (max-width: 360px) {
    .ascii-art {
        font-size: 3px;
        line-height: 1;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--text-color);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    opacity: 0.8;
}

/* Content scrollbar */
#content-display::-webkit-scrollbar {
    width: 10px;
}

#content-display::-webkit-scrollbar-track {
    background: #f0f0f0;
}

#content-display::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

#content-display::-webkit-scrollbar-thumb:hover {
    background: #555;
}