/* ============================================
   Material Design 3 Color System
   Light & Dark Mode Support
   ============================================ */

:root {
    /* Typography */
    --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Roboto Mono', 'SF Mono', Monaco, 'Cascadia Code', monospace;
    
    /* Neurodivergent-Friendly Light Theme - Low Contrast, Sensory-Safe */
    /* Based on research: warm cream/beige backgrounds, muted pastels, desaturated colors */
    
    /* Primary: Soft muted blue-green (calming, not harsh) */
    --md-sys-color-primary: #6b8a8a;
    --md-sys-color-on-primary: #faf8f5;
    --md-sys-color-primary-container: #e8ede8;
    --md-sys-color-on-primary-container: #4a5d5d;
    
    /* Secondary: Soft warm gray-blue */
    --md-sys-color-secondary: #8a9a9a;
    --md-sys-color-on-secondary: #faf8f5;
    --md-sys-color-secondary-container: #eef0ed;
    --md-sys-color-on-secondary-container: #5a6a6a;
    
    /* Tertiary: Soft muted lilac/pastel purple */
    --md-sys-color-tertiary: #9a8a9a;
    --md-sys-color-on-tertiary: #faf8f5;
    --md-sys-color-tertiary-container: #f0eef0;
    --md-sys-color-on-tertiary-container: #6a5a6a;
    
    /* Error: Soft muted coral (not harsh red) */
    --md-sys-color-error: #b88a8a;
    --md-sys-color-on-error: #faf8f5;
    --md-sys-color-error-container: #f5e8e8;
    --md-sys-color-on-error-container: #7a5a5a;
    
    /* Surfaces: Warm beige tones (avoiding stark white) */
    --md-sys-color-surface: #f0ede8;
    --md-sys-color-on-surface: #4a4843;
    --md-sys-color-surface-variant: #edeae5;
    --md-sys-color-on-surface-variant: #6a6863;
    
    /* Borders: Very subtle warm gray */
    --md-sys-color-outline: #d8d6d3;
    --md-sys-color-outline-variant: #e8e6e3;
    
    /* Background: Warm beige (much softer than white) */
    --md-sys-color-background: #f5f3f0;
    --md-sys-color-on-background: #4a4843;
    
    /* Soft shadows */
    --md-sys-color-shadow: rgba(0, 0, 0, 0.04);
    
    /* Semantic Colors (Light - Neurodivergent Friendly) */
    --color-bg: var(--md-sys-color-background);
    --color-surface: var(--md-sys-color-surface);
    --color-surface-elevated: #f5f3f0;
    --color-text: var(--md-sys-color-on-background);
    --color-text-secondary: var(--md-sys-color-on-surface-variant);
    --color-primary: var(--md-sys-color-primary);
    --color-primary-hover: #7a9a9a;
    --color-secondary: var(--md-sys-color-secondary);
    --color-accent: var(--md-sys-color-tertiary);
    --color-border: var(--md-sys-color-outline-variant);
    --color-border-subtle: rgba(0, 0, 0, 0.04);
    --color-shadow: var(--md-sys-color-shadow);
    
    /* Navigation & Footer - Warm cream with subtle borders */
    --nav-bg: rgba(245, 243, 240, 0.95);
    --nav-border: var(--color-border);
    --footer-bg: rgba(245, 243, 240, 0.95);
    --footer-border: var(--color-border);
    
    /* Terminal - Warm beige background (much softer than white) */
    --terminal-bg: rgba(245, 243, 240, 0.98);
    --terminal-header-bg: #edeae5;
    --terminal-border: var(--color-border);
    --terminal-text: var(--color-text);
    
    /* Code & Syntax - Muted, low contrast */
    --code-bg: #f0ede8;
    --code-text: #5a5853;
    --code-keyword: #8a7a8a;
    --code-string: #7a8a8a;
    --code-comment: #9a9893;
    --code-number: #8a9a8a;
}

[data-theme="dark"] {
    /* Material Design 3 - Dark Theme */
    --md-sys-color-primary: #9ecaff;
    --md-sys-color-on-primary: #003258;
    --md-sys-color-primary-container: #004883;
    --md-sys-color-on-primary-container: #d0e4ff;
    
    --md-sys-color-secondary: #bbc7db;
    --md-sys-color-on-secondary: #253140;
    --md-sys-color-secondary-container: #3c4858;
    --md-sys-color-on-secondary-container: #d7e3f7;
    
    --md-sys-color-tertiary: #d6bee4;
    --md-sys-color-on-tertiary: #3b2948;
    --md-sys-color-tertiary-container: #53425f;
    --md-sys-color-on-tertiary-container: #f2daff;
    
    --md-sys-color-error: #ffb4ab;
    --md-sys-color-on-error: #690005;
    --md-sys-color-error-container: #93000a;
    --md-sys-color-on-error-container: #ffdad6;
    
    --md-sys-color-surface: #1a1c1e;
    --md-sys-color-on-surface: #e2e2e6;
    --md-sys-color-surface-variant: #44474f;
    --md-sys-color-on-surface-variant: #c4c6cf;
    
    --md-sys-color-outline: #8e9099;
    --md-sys-color-outline-variant: #44474f;
    
    --md-sys-color-background: #1a1c1e;
    --md-sys-color-on-background: #e2e2e6;
    
    --md-sys-color-shadow: rgba(0, 0, 0, 0.4);
    
    /* Semantic Colors (Dark) */
    --color-bg: var(--md-sys-color-background);
    --color-surface: var(--md-sys-color-surface);
    --color-surface-elevated: #2d2f33;
    --color-text: var(--md-sys-color-on-background);
    --color-text-secondary: var(--md-sys-color-on-surface-variant);
    --color-primary: var(--md-sys-color-primary);
    --color-primary-hover: #b3d4ff;
    --color-secondary: var(--md-sys-color-secondary);
    --color-accent: var(--md-sys-color-tertiary);
    --color-border: var(--md-sys-color-outline-variant);
    --color-border-subtle: rgba(245, 243, 240, 0.3);
    --color-shadow: var(--md-sys-color-shadow);
    
    /* Navigation & Footer */
    --nav-bg: rgba(26, 28, 30, 0.95);
    --nav-border: var(--color-border);
    --footer-bg: rgba(26, 28, 30, 0.95);
    --footer-border: var(--color-border);
    
    /* Terminal */
    --terminal-bg: rgba(26, 28, 30, 0.98);
    --terminal-header-bg: #252729;
    --terminal-border: var(--color-border);
    --terminal-text: var(--color-text);
    
    /* Code & Syntax (Dark) */
    --code-bg: #1e1e1e;
    --code-text: #d4d4d4;
    --code-keyword: #569cd6;
    --code-string: #ce9178;
    --code-comment: #6a9955;
    --code-number: #b5cea8;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    background-color: var(--color-bg);
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    cursor: default;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 96px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.loading {
    overflow: hidden;
}

/* ============================================
   Typography System
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: 0.5em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: 1em;
    color: var(--color-text);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

strong {
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Navigation Bar - Terminal Style Design
   ============================================ */

#simple-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--terminal-header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--terminal-border);
    padding: 12px 20px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-secondary);
    box-shadow: 0 2px 12px var(--color-shadow);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    min-height: 56px;
}

/* Terminal-style company name with prompt */
#simple-nav > div:first-child {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    font-family: var(--font-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    padding-left: 24px;
}

#simple-nav > div:first-child::before {
    content: '$';
    color: var(--color-primary);
    font-weight: 700;
    position: absolute;
    left: 0;
    opacity: 0.8;
}

#simple-nav > div:first-child::after {
    content: '>';
    color: var(--color-text-secondary);
    font-weight: 400;
    margin-left: 4px;
    opacity: 0.6;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 0.6; }
    51%, 100% { opacity: 0.2; }
}

/* Navigation links container */
#simple-nav > div:last-child {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

/* Terminal-style navigation links */
#simple-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: var(--font-secondary);
    padding: 6px 12px;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 4px;
    letter-spacing: 0.01em;
    background: transparent;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
}

#simple-nav a::before {
    content: 'open';
    color: var(--color-primary);
    font-size: 0.75rem;
    margin-right: 6px;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-8px);
    display: inline-block;
    font-weight: 600;
}

#simple-nav a:hover {
    color: var(--color-text);
    background: var(--color-surface-elevated);
    border-color: var(--terminal-border);
    box-shadow: 
        inset 0 1px 2px rgba(0, 0, 0, 0.03),
        0 1px 3px rgba(0, 0, 0, 0.06);
}

#simple-nav a:hover::before {
    opacity: 0.7;
    transform: translateX(0);
}

#simple-nav a:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Theme Toggle Button - Terminal Style */
/* Old theme-toggle styles removed - using terminal-header-nav .theme-toggle instead */

/* Terminal-style divider between nav items */
#simple-nav > div:last-child::before {
    content: '';
    display: none;
}

/* Responsive adjustments for terminal header nav */
@media (max-width: 1024px) {
    .terminal-header {
        padding: 10px 16px;
        min-height: 48px;
        flex-wrap: wrap;
    }
    
    .terminal-header-nav {
        gap: 0.75rem;
    }
    
    .terminal-header-nav a {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
    
    .terminal-header-nav .theme-toggle {
        padding: 4px 8px;
        font-size: 0.7rem;
    }
}

@media (max-width: 768px) {
    .terminal-header {
        padding: 8px 12px;
        min-height: 44px;
    }
    
    .terminal-header-title {
        font-size: 0.8125rem;
    }
    
    .terminal-header-nav {
        gap: 0.5rem;
        order: 3;
        width: 100%;
        justify-content: flex-start;
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px solid var(--terminal-border);
    }
    
    .terminal-header-nav a {
        font-size: 0.6875rem;
        padding: 3px 6px;
    }
    
    .terminal-header-nav .theme-toggle {
        margin-left: auto;
        padding: 3px 6px;
        font-size: 0.6875rem;
    }
    
    .terminal-header-nav .theme-toggle::after {
        display: inline-block;
    }
}

/* ============================================
   Terminal Footer (Status Bar Design)
   ============================================ */

#simple-footer.terminal-footer {
    /* Reset existing footer styles */
    padding: 0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    
    /* Status Bar Styling - 3 Row Design */
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    min-height: 96px; /* 3 rows × 32px */
    background: var(--terminal-header-bg);
    border-top: 1px solid var(--terminal-border);
    display: flex;
    flex-direction: column;
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    z-index: 1000;
    box-shadow: 0 -1px 0 rgba(0, 0, 0, 0.02);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    height: 32px;
    border-bottom: 1px solid var(--terminal-border);
}

.footer-row:last-child {
    border-bottom: none;
}

.footer-group {
    display: flex;
    align-items: stretch;
}

.footer-group.left {
    flex: 0 0 auto;
}

.footer-group.right {
    flex: 0 0 auto;
    margin-left: auto;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    color: var(--color-text-secondary);
    border-right: 1px solid var(--terminal-border);
    transition: all 0.2s ease;
    white-space: nowrap;
    position: relative;
    height: 100%;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.footer-group.right .footer-item {
    border-right: none;
    border-left: 1px solid var(--terminal-border);
}

.footer-group.right .footer-item:last-child {
    border-left: none;
}

/* Status Indicator (Blinking Dot) */
.status-indicator {
    font-weight: 700;
    color: var(--color-text);
    background-color: var(--color-surface);
    min-width: 100px;
    flex-shrink: 0;
}

.indicator-dot {
    width: 8px;
    height: 8px;
    background-color: #27c93f;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px rgba(39, 201, 63, 0.4);
    animation: pulse 2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 8px rgba(39, 201, 63, 0.4);
    }
    50% {
        opacity: 0.7;
        box-shadow: 0 0 12px rgba(39, 201, 63, 0.6);
    }
}

.status-text {
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Company ID, Registration, and Email */
.company-id,
.company-reg,
.email {
    font-weight: 500;
}

.company-id {
    min-width: fit-content;
    white-space: nowrap;
}

.company-id i,
.company-reg i,
.email i {
    font-size: 0.875rem;
    opacity: 0.7;
}

.company-reg {
    min-width: fit-content;
    white-space: nowrap;
}

.company-reg.full-width {
    width: 100%;
    justify-content: flex-start;
    border-right: none;
    border-left: none;
    padding-left: 16px;
}

.email {
    min-width: fit-content;
    white-space: nowrap;
}

/* Links as File Paths */
a.footer-item.link {
    cursor: pointer;
    text-decoration: none;
    color: var(--color-text-secondary);
}

a.footer-item.link:hover {
    background-color: var(--color-surface-elevated);
    color: var(--color-primary);
}

a.footer-item.link:hover span::before {
    content: '> ';
    color: var(--color-primary);
    font-weight: 700;
}

a.footer-item.link:active {
    background-color: var(--color-surface);
}

/* Email Link */
a.footer-item.email {
    cursor: pointer;
    text-decoration: none;
    color: var(--color-text-secondary);
}

a.footer-item.email:hover {
    background-color: var(--color-surface-elevated);
    color: var(--color-primary);
}

a.footer-item.email:active {
    background-color: var(--color-surface);
}

/* Timestamp */
.timestamp {
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    min-width: 80px;
    justify-content: center;
}

#system-time {
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    #simple-footer.terminal-footer {
        display: none;
    }
}

.desktop-only {
    display: flex;
}

@media (max-width: 1024px) {
    .desktop-only {
        display: none;
    }
    
    .footer-item {
        padding: 0 12px;
        font-size: 0.7rem;
    }
    
    .status-indicator {
        min-width: 80px;
    }
    
    .email {
        max-width: 180px;
    }
}

@media (max-width: 1024px) {
    .company-reg.full-width span {
        font-size: 0.7rem;
    }
    
    .email {
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* ============================================
   Loader
   ============================================ */

#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg);
    z-index: 10001;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

#loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-text {
    font-family: var(--font-secondary);
    color: var(--color-primary);
}

/* ============================================
   Background Canvas
   ============================================ */

#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.15;
}

.cursor-dot {
    width: 0px;
    height: 0px;
    border: 0px solid var(--color-primary);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: transform 0.2s ease-out, border-color 0.3s ease;
    z-index: 9999;
}

/* ============================================
   Terminal Window - Redesigned
   ============================================ */

.terminal-window {
    background-color: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    border-radius: 16px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.08),
        0 0 0 1px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    will-change: transform;
    contain: layout style paint;
    /* Performance optimizations */
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

[data-theme="dark"] .terminal-window {
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.05);
}

#terminal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    min-width: 400px;
    min-height: 300px;
    z-index: 10;
    font-family: var(--font-primary);
    transition: opacity 0.3s ease;
    contain: layout style paint;
}

#terminal.dragging,
#terminal.resizing {
    transition: none;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

#terminal.dragging *,
#terminal.resizing * {
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
}

#terminal.dragging .terminal-header,
#terminal.resizing .terminal-resize-handle {
    pointer-events: auto;
}

.terminal-header {
    background: var(--terminal-header-bg);
    padding: 12px 20px;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-text-secondary);
    cursor: default;
    flex-shrink: 0;
    user-select: none;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: var(--font-secondary);
    letter-spacing: 0.01em;
    transition: background-color 0.3s ease;
    border-bottom: 1px solid var(--terminal-border);
    position: relative;
    gap: 20px;
    min-height: 56px;
}

.terminal-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--terminal-border) 20%, 
        var(--terminal-border) 80%, 
        transparent 100%);
}

.terminal-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
    pointer-events: auto;
    z-index: 10;
}

.terminal-header-title {
    font-family: var(--font-secondary);
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
}

/* Navigation inside terminal header */
.terminal-header-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    flex: 1 1 auto;
    justify-content: flex-end;
    margin-left: auto;
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

.terminal-header-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-secondary);
    padding: 4px 10px;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 4px;
    letter-spacing: 0.01em;
    background: transparent;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    cursor: pointer;
    pointer-events: auto;
    z-index: 11;
}

.terminal-header-nav a::before {
    content: 'open';
    color: var(--color-primary);
    font-size: 0.7rem;
    margin-right: 6px;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-8px);
    display: inline-block;
    font-weight: 600;
}

.terminal-header-nav a:hover {
    color: var(--color-text);
    background: var(--color-surface-elevated);
    border-color: var(--terminal-border);
    box-shadow: 
        inset 0 1px 2px rgba(0, 0, 0, 0.03),
        0 1px 3px rgba(0, 0, 0, 0.06);
}

.terminal-header-nav a:hover::before {
    opacity: 0.7;
    transform: translateX(0);
}

.terminal-header-nav a:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Theme Toggle - Terminal Style */
.terminal-header-nav .theme-toggle,
#theme-toggle {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 6px 12px;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: var(--font-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
    white-space: nowrap;
    margin-left: 0;
    pointer-events: auto !important;
    z-index: 1000;
    text-decoration: none;
}

/* Hide the icon span - we'll use text instead */
.terminal-header-nav #theme-icon,
#theme-icon {
    display: none;
}

/* Show current theme as text */
.terminal-header-nav .theme-toggle::before,
#theme-toggle::before {
    content: 'theme';
    color: var(--color-primary);
    font-size: 0.75rem;
    margin-right: 6px;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-8px);
    display: inline-block;
    font-weight: 600;
}

/* Show theme status text */
.terminal-header-nav .theme-toggle::after,
#theme-toggle::after {
    content: 'light';
    display: inline-block;
}

[data-theme="dark"] .terminal-header-nav .theme-toggle::after,
[data-theme="dark"] #theme-toggle::after {
    content: 'dark';
}

/* Hover states - match terminal nav link style */
.terminal-header-nav .theme-toggle:hover,
#theme-toggle:hover {
    color: var(--color-text);
    background: var(--color-surface-elevated);
    border-color: var(--terminal-border);
    box-shadow: 
        inset 0 1px 2px rgba(0, 0, 0, 0.03),
        0 1px 3px rgba(0, 0, 0, 0.06);
}

.terminal-header-nav .theme-toggle:hover::before,
#theme-toggle:hover::before {
    opacity: 0.7;
    transform: translateX(0);
}

.terminal-header-nav .theme-toggle:active,
#theme-toggle:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.terminal-header-nav .theme-toggle:focus-visible,
#theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Smooth theme transition for all elements - optimized */
html, body,
.terminal-window, .terminal-header,
#terminal-output, .terminal-tabs,
.tab, .terminal-input-line {
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.terminal-resize-handle {
    position: absolute;
    background: transparent;
    z-index: 1000;
}

.terminal-resize-handle.n { top: 0; left: 0; right: 0; height: 4px; cursor: ns-resize; }
.terminal-resize-handle.s { bottom: 0; left: 0; right: 0; height: 4px; cursor: ns-resize; }
.terminal-resize-handle.e { top: 0; right: 0; bottom: 0; width: 4px; cursor: ew-resize; }
.terminal-resize-handle.w { top: 0; left: 0; bottom: 0; width: 4px; cursor: ew-resize; }
.terminal-resize-handle.ne { top: 0; right: 0; width: 8px; height: 8px; cursor: nesw-resize; }
.terminal-resize-handle.nw { top: 0; left: 0; width: 8px; height: 8px; cursor: nwse-resize; }
.terminal-resize-handle.se { bottom: 0; right: 0; width: 8px; height: 8px; cursor: nwse-resize; }
.terminal-resize-handle.sw { bottom: 0; left: 0; width: 8px; height: 8px; cursor: nesw-resize; }

.terminal-buttons {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    pointer-events: auto;
    z-index: 11;
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 8px;
    font-weight: bold;
    color: rgba(0, 0, 0, 0.6);
    cursor: pointer;
    transition: transform 0.2s ease, filter 0.2s ease, opacity 0.2s ease;
    pointer-events: auto;
    z-index: 12;
}

.terminal-button:hover {
    transform: scale(1.15);
    opacity: 1;
}

.terminal-button.close {
    background-color: #ff5f56;
}

.terminal-button.minimize {
    background-color: #ffbd2e;
}

.terminal-button.expand {
    background-color: #27c93f;
}

#terminal .terminal-button.close {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Terminal Tabs - Redesigned */
.terminal-tabs {
    display: flex;
    background-color: var(--terminal-header-bg);
    border-bottom: 1px solid var(--terminal-border);
    flex-shrink: 0;
    overflow-x: auto;
    overflow-y: hidden;
    transition: background-color 0.3s ease;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
    will-change: scroll-position;
}

.terminal-tabs::-webkit-scrollbar {
    height: 4px;
}

.terminal-tabs::-webkit-scrollbar-track {
    background: transparent;
}

.terminal-tabs::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

/* Modern Tab System - 2025 Best Practices */
.tab {
    flex: 0 0 auto;
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    border-right: 1px solid var(--terminal-border);
    min-width: fit-content;
    outline: none;
    user-select: none;
    -webkit-user-select: none;
}

.tab:last-child {
    border-right: none;
}

.tab:hover {
    background-color: var(--color-surface-elevated);
    color: var(--color-text);
    transform: translateY(-1px);
}

.tab:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
    border-radius: 4px;
}

.tab.active {
    background-color: var(--terminal-bg);
    color: var(--color-text);
    font-weight: 600;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .tab.active {
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.2);
}

.tab.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--color-primary) 0%, 
        var(--color-primary) 100%);
    border-radius: 3px 3px 0 0;
    pointer-events: none;
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
    from {
        transform: scaleX(0);
        opacity: 0;
    }
    to {
        transform: scaleX(1);
        opacity: 1;
    }
}

.tab-text {
    flex: 0 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-close-button {
    flex-shrink: 0;
    margin-left: 4px;
    font-size: 16px;
    line-height: 1;
    padding: 4px 6px;
    border-radius: 4px;
    opacity: 0.5;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    cursor: pointer;
    outline: none;
    border: none;
    background: none;
    color: inherit;
}

.tab-close-button:hover,
.tab-close-button:focus-visible {
    opacity: 1;
    background-color: var(--color-surface-elevated);
    transform: scale(1.1);
}

.tab-close-button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Legacy support for .file-tab (backwards compatibility) */
.file-tab {
    flex: 0 0 auto;
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    border-right: 1px solid var(--terminal-border);
    min-width: fit-content;
}

#terminal-body {
    flex-grow: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    contain: layout style paint;
    will-change: scroll-position;
}

#terminal-output {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    overflow-x: hidden;
    white-space: normal;
    word-break: break-word;
    line-height: 1.75;
    min-height: 0;
    color: var(--terminal-text);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
    contain: layout style paint;
    will-change: scroll-position;
    /* Performance optimizations */
    -webkit-overflow-scrolling: touch;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

#terminal-output::-webkit-scrollbar {
    width: 8px;
}

#terminal-output::-webkit-scrollbar-track {
    background: transparent;
    margin: 8px 0;
}

#terminal-output::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

#terminal-output::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
    background-clip: padding-box;
}

/* Terminal output paragraphs */
#terminal-output > p {
    margin: 0.875rem 0;
    line-height: 1.75;
    color: var(--color-text);
    font-size: 0.9375rem;
    font-family: var(--font-primary);
}

#terminal-output > p:first-child {
    margin-top: 0;
}

#terminal-output > p:last-child {
    margin-bottom: 0;
}

/* Terminal command lines */
#terminal-output > p .prompt {
    color: var(--color-primary);
    font-weight: 700;
    font-family: var(--font-secondary);
    margin-right: 0.5rem;
}

/* Terminal output spans with classes */
#terminal-output > p .string {
    color: var(--code-string);
    font-weight: 500;
}

#terminal-output > p .keyword {
    color: var(--code-keyword);
    font-weight: 600;
    font-family: var(--font-secondary);
}

.terminal-input-line {
    flex-shrink: 0;
    padding: 16px 20px;
    border-top: 1px solid var(--terminal-border);
    background: var(--terminal-bg);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    transition: background-color 0.2s ease;
}

.terminal-input-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--terminal-border) 20%, 
        var(--terminal-border) 80%, 
        transparent 100%);
}

.prompt {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.9375rem;
    font-family: var(--font-secondary);
    user-select: none;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

#terminal-input {
    background: none;
    border: none;
    color: var(--terminal-text);
    font-family: var(--font-secondary);
    flex-grow: 1;
    font-size: 0.9375rem;
    line-height: 1.5;
    padding: 0;
    margin: 0;
    caret-color: var(--color-primary);
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

#terminal-input:focus {
    outline: none;
}

#terminal-input::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.5;
}

.terminal-input-wrapper {
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
}

.terminal-input-overlay {
    position: relative;
    display: inline-block;
    width: 100%;
    font-family: var(--font-secondary);
    flex-grow: 1;
}

#terminal-ghost-input {
    position: absolute;
    top: 0;
    left: 0;
    color: var(--color-text-secondary);
    opacity: 0.35;
    white-space: pre;
    pointer-events: none;
    font: inherit;
    line-height: inherit;
    padding: 0;
    margin: 0;
    z-index: 1;
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
}

/* ============================================
   Content Containers - Redesigned
   ============================================ */

#terminal-output .code-container,
#terminal-output .markdown-container,
#terminal-output .about-container,
#terminal-output .shell-container {
    margin: 0;
    padding: 0;
    max-width: 100%;
    width: 100%;
}

/* Markdown Container - Enhanced Typography */
#terminal-output .markdown-container {
    padding: 0;
}

#terminal-output .markdown-container h1 {
    font-size: 2.25rem;
    border-bottom: 3px solid var(--color-border);
    padding-bottom: 1rem;
    margin-top: 0;
    margin-bottom: 2rem;
    color: var(--color-text);
    font-weight: 700;
    font-family: var(--font-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

#terminal-output .markdown-container h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    color: var(--color-text);
    font-weight: 600;
    font-family: var(--font-primary);
    letter-spacing: -0.01em;
    line-height: 1.3;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

#terminal-output .markdown-container h3 {
    font-size: 1.375rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    font-weight: 600;
    font-family: var(--font-primary);
    line-height: 1.4;
}

#terminal-output .markdown-container h4 {
    font-size: 1.125rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
    font-weight: 600;
    font-family: var(--font-primary);
    line-height: 1.4;
}

#terminal-output .markdown-container p {
    margin-top: 1rem;
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    font-size: 0.9375rem;
}

#terminal-output .markdown-container p:first-child {
    margin-top: 0;
}

#terminal-output .markdown-container p:last-child {
    margin-bottom: 0;
}

#terminal-output .markdown-container strong {
    color: var(--color-text);
    font-weight: 600;
    letter-spacing: 0.01em;
}

#terminal-output .markdown-container em {
    color: var(--color-text-secondary);
    font-style: italic;
}

#terminal-output .markdown-container ul,
#terminal-output .markdown-container ol {
    margin-left: 0;
    margin-top: 1rem;
    margin-bottom: 1rem;
    padding-left: 2rem;
    line-height: 1.8;
}

#terminal-output .markdown-container ul li {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    padding-left: 0.5rem;
    position: relative;
}

#terminal-output .markdown-container ul li::marker {
    color: var(--color-primary);
}

#terminal-output .markdown-container ol li {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    padding-left: 0.5rem;
}

#terminal-output .markdown-container a.link,
#terminal-output .markdown-container a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
    font-weight: 500;
    cursor: pointer;
}

#terminal-output .markdown-container a.link:hover,
#terminal-output .markdown-container a:hover {
    color: var(--color-primary-hover);
    border-bottom-color: var(--color-primary-hover);
}

/* About Container - Enhanced */
#terminal-output .about-container {
    padding: 0;
}

#terminal-output .about-container h1 {
    font-size: 2.25rem;
    margin-top: 0;
    margin-bottom: 2rem;
    color: var(--color-text);
    font-weight: 700;
    font-family: var(--font-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

#terminal-output .about-container h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    font-weight: 600;
    font-family: var(--font-primary);
    letter-spacing: -0.01em;
}

#terminal-output .about-container .highlight {
    color: var(--color-primary);
    font-weight: 600;
    background: var(--color-primary-container);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    display: inline-block;
    margin: 0 0.125rem;
    transition: all 0.2s ease;
}

#terminal-output .about-container .highlight:hover {
    background: var(--color-primary);
    color: var(--md-sys-color-on-primary);
    transform: translateY(-1px);
}

/* Code Container - Enhanced */
#terminal-output .code-container {
    margin: 2rem 0;
}

#terminal-output .code-container pre {
    margin: 0;
    padding: 1.5rem;
    background: var(--code-bg);
    border-radius: 12px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    font-family: var(--font-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
    box-shadow: 
        inset 0 1px 3px rgba(0, 0, 0, 0.03),
        0 1px 0 rgba(245, 243, 240, 0.4);
    position: relative;
    contain: layout style paint;
    will-change: scroll-position;
}

[data-theme="dark"] #terminal-output .code-container pre {
    box-shadow: 
        inset 0 1px 3px rgba(0, 0, 0, 0.3),
        0 1px 0 rgba(255, 255, 255, 0.02);
}

#terminal-output .code-container pre::-webkit-scrollbar {
    height: 6px;
}

#terminal-output .code-container pre::-webkit-scrollbar-track {
    background: transparent;
}

#terminal-output .code-container pre::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

/* Code Syntax - Enhanced & Professional */
.keyword {
    color: var(--code-keyword);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.variable {
    color: var(--code-text);
    font-weight: 500;
}

.operator {
    color: var(--code-text);
    opacity: 0.8;
}

.punctuation {
    color: var(--code-text);
    opacity: 0.6;
}

.property {
    color: var(--code-text);
    font-weight: 500;
}

.string {
    color: var(--code-string);
    font-weight: 500;
}

.comment {
    color: var(--code-comment);
    font-style: italic;
    opacity: 0.8;
}

.number {
    color: var(--code-number);
    font-weight: 500;
}

/* ============================================
   Content Panels
   ============================================ */

.panel-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 5;
}

.content-panel {
    position: fixed;
    width: 90vw;
    max-width: 700px;
    height: 60vh;
    min-width: 400px;
    min-height: 300px;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    font-family: var(--font-primary);
    z-index: 20;
}

.content-panel.visible {
    opacity: 1;
    pointer-events: auto;
}

.content-panel.dragging,
.content-panel.resizing {
    transition: opacity 0.3s ease;
    user-select: none;
    -webkit-user-select: none;
}

.content-panel.dragging *,
.content-panel.resizing * {
    pointer-events: none;
    user-select: none;
}

.content-panel.dragging .terminal-header,
.content-panel.resizing .terminal-resize-handle {
    pointer-events: auto;
}

.panel-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 2rem;
}

.panel-filename {
    color: var(--color-text-secondary);
}

body.panel-open #terminal {
    transform: translate(-50%, -50%) translateX(-400px);
}

.panel-clone {
    position: fixed;
    background-color: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    border-radius: 12px;
    z-index: 100;
    transition: all 0.4s cubic-bezier(0.55, 0, 1, 0.45);
}

/* ============================================
   Mobile UI
   ============================================ */

.mobile-ui {
    display: none;
}

@media (max-width: 768px) {
    #terminal,
    .panel-container,
    .cursor-dot,
    #simple-footer {
        display: none;
    }
    
    #simple-nav {
        display: flex !important;
    }

    .mobile-ui {
        display: flex;
        flex-direction: column;
        height: 100vh;
        width: 100vw;
        overflow: hidden;
    }

    .mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 1.5rem;
        background-color: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        flex-shrink: 0;
    }

    .logo {
        font-size: 1.2rem;
        font-weight: 600;
        color: var(--color-primary);
    }

    #mobile-menu-toggle {
        background: none;
        border: none;
        font-size: 1.8rem;
        color: var(--color-text);
        cursor: pointer;
    }

    .mobile-content {
        flex-grow: 1;
        overflow-y: auto;
        padding: 1.5rem;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.button {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--md-sys-color-on-primary);
    padding: 0.625rem 1.25rem;
    text-decoration: none;
    font-family: var(--font-primary);
    font-weight: 500;
    border-radius: 6px;
    transition: background-color 0.2s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
}

.button:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

.social-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-primary);
    font-weight: 500;
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
    color: var(--color-text);
}

.social-btn:hover {
    background-color: var(--color-surface-elevated);
    border-color: var(--color-primary);
}

/* Shell Container - Enhanced */
#terminal-output .shell-container {
    padding: 0;
    margin: 1rem 0;
}

.shell-container .terminal-line {
    font-family: var(--font-secondary);
    color: var(--color-text);
    margin: 0.5rem 0;
    white-space: pre;
    font-size: 0.875rem;
    line-height: 1.6;
    padding: 0.25rem 0;
}

/* ============================================
   Legacy Support (Backwards Compatibility)
   ============================================ */

.markdown-container h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}

.markdown-container p {
    margin-bottom: 1rem;
}

.markdown-container strong {
    color: var(--color-text);
    font-weight: 600;
}

.markdown-container em {
    color: var(--color-text-secondary);
    font-style: italic;
}

.markdown-container ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.markdown-container ul li {
    margin-bottom: 0.5rem;
}

.markdown-container h2 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.markdown-container h3 {
    font-size: 1.25rem;
    margin-top: 1rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.markdown-container a.link {
    color: var(--color-primary);
    text-decoration: underline;
    cursor: pointer;
}

.markdown-container a.link:hover {
    color: var(--color-primary-hover);
}

.about-container {
    font-family: var(--font-primary);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.about-container h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.about-container .highlight {
    color: var(--color-primary);
    font-weight: 600;
    background: var(--color-primary-container);
    padding: 0.125rem 0.25rem;
    border-radius: 4px;
}