/* ===== CSS VARIABLES ===== */
:root {
    /* Color Palette */
    --bg-space: #0a0118;
    --bg-deep: #13011f;
    --terminal-bg: rgba(18, 8, 35, 0.85);
    --terminal-border: rgba(138, 82, 255, 0.3);
    --header-bg: rgba(25, 12, 45, 0.95);
    
    /* Accent Colors */
    --primary: #8a52ff;
    --secondary: #00d9ff;
    --accent-green: #00ff88;
    --accent-pink: #ff0088;
    --text-primary: #e8e6f0;
    --text-secondary: #b8b5c9;
    --text-dim: #6e6b7f;
    
    /* Terminal Colors */
    --prompt-user: #00ff88;
    --prompt-host: #00d9ff;
    --prompt-symbol: #8a52ff;
    
    /* Syntax Highlighting */
    --syntax-keyword: #ff0088;
    --syntax-string: #00d9ff;
    --syntax-number: #ffa500;
    --syntax-comment: #6e6b7f;
    
    /* Effects */
    --glow-primary: 0 0 20px rgba(138, 82, 255, 0.5);
    --glow-secondary: 0 0 15px rgba(0, 217, 255, 0.4);
    --glow-green: 0 0 10px rgba(0, 255, 136, 0.3);
    
    /* Typography */
    --font-mono: 'IBM Plex Mono', 'Space Mono', monospace;
    --font-size-base: 15px;
    --line-height: 1.6;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

/* Dark theme adjustments */
body.light-mode {
    --bg-space: #f5f3ff;
    --bg-deep: #e8e5f5;
    --terminal-bg: rgba(255, 255, 255, 0.9);
    --terminal-border: rgba(138, 82, 255, 0.2);
    --header-bg: rgba(245, 243, 255, 0.95);
    --text-primary: #2a1f3f;
    --text-secondary: #4a3f5f;
    --text-dim: #8a7f9f;
}

/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-mono);
    background: var(--bg-space);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    position: relative;
}

/* ===== BACKGROUND ===== */
#matrix-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.4;
}

.cosmic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.star-field {
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent),
        radial-gradient(1px 1px at 33% 80%, white, transparent),
        radial-gradient(1px 1px at 15% 90%, white, transparent);
    background-size: 200% 200%;
    background-position: 0% 0%;
    opacity: 0.3;
    animation: starTwinkle 120s linear infinite;
}

@keyframes starTwinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.5; }
}

.nebula-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(138, 82, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 0, 136, 0.08) 0%, transparent 50%);
    animation: nebulaFloat 30s ease-in-out infinite;
}

@keyframes nebulaFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(5%, -5%) rotate(120deg); }
    66% { transform: translate(-5%, 5%) rotate(240deg); }
}

/* ===== TERMINAL CONTAINER ===== */
.terminal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
    z-index: 10;
}

.terminal-window {
    width: 100%;
    max-width: 1000px;
    height: 90vh;
    max-height: 700px;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    border-radius: 12px;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(138, 82, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        var(--glow-primary);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: terminalSlideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

@keyframes terminalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Glassmorphism border glow */
.terminal-window::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, 
        var(--primary), 
        var(--secondary), 
        var(--accent-green),
        var(--primary));
    background-size: 300% 300%;
    border-radius: 12px;
    opacity: 0.3;
    z-index: -1;
    animation: borderGlow 8s ease infinite;
    filter: blur(8px);
}

@keyframes borderGlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ===== TERMINAL HEADER ===== */
.terminal-header {
    background: var(--header-bg);
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    border-bottom: 1px solid rgba(138, 82, 255, 0.2);
    user-select: none;
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: all 0.3s ease;
    cursor: pointer;
}

.dot-close {
    background: #ff5f57;
    box-shadow: 0 0 10px rgba(255, 95, 87, 0.5);
}

.dot-minimize {
    background: #ffbd2e;
    box-shadow: 0 0 10px rgba(255, 189, 46, 0.5);
}

.dot-maximize {
    background: #28ca42;
    box-shadow: 0 0 10px rgba(40, 202, 66, 0.5);
}

.dot:hover {
    transform: scale(1.15);
    filter: brightness(1.2);
}

.terminal-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.terminal-icon {
    color: var(--primary);
    filter: drop-shadow(var(--glow-primary));
}

.header-right {
    display: flex;
    gap: var(--spacing-sm);
}

.header-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-btn:hover {
    background: rgba(138, 82, 255, 0.15);
    color: var(--primary);
}

/* ===== TERMINAL BODY ===== */
.terminal-body {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    cursor: text;
}

/* Custom Scrollbar */
.terminal-body::-webkit-scrollbar {
    width: 10px;
}

.terminal-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
}

.terminal-body::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
    box-shadow: var(--glow-primary);
}

.terminal-body::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
    box-shadow: var(--glow-secondary);
}

/* Output Container */
.output-container {
    margin-bottom: var(--spacing-md);
}

.output-line {
    margin-bottom: var(--spacing-xs);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== INPUT LINE ===== */
.input-line {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.prompt {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-weight: 600;
}

.prompt-user {
    color: var(--prompt-user);
    text-shadow: var(--glow-green);
}

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

.prompt-host {
    color: var(--prompt-host);
    text-shadow: var(--glow-secondary);
}

.prompt-path {
    color: var(--primary);
    font-weight: 600;
}

.prompt-symbol {
    color: var(--prompt-symbol);
    font-weight: 700;
    font-size: 18px;
    text-shadow: var(--glow-primary);
}

#cmd-input {
    flex: 1;
    min-width: 200px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-base);
    font-weight: 500;
    caret-color: var(--primary);
    caret-shape: block;
}

#cmd-input::selection {
    background: var(--primary);
    color: white;
}

/* ===== COMMAND OUTPUT STYLES ===== */
.command-echo {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.success {
    color: var(--accent-green);
}

.error {
    color: var(--accent-pink);
}

.warning {
    color: var(--syntax-number);
}

.info {
    color: var(--secondary);
}

/* Links */
a {
    color: var(--secondary);
    text-decoration: none;
    border-bottom: 1px dashed var(--secondary);
    transition: all 0.3s ease;
    position: relative;
}

a:hover {
    color: var(--accent-green);
    border-bottom-color: var(--accent-green);
    text-shadow: var(--glow-green);
}

/* Fastfetch ASCII Art */
.ascii-art {
    color: var(--primary);
    font-weight: 600;
    text-shadow: var(--glow-primary);
    line-height: 1.2;
    margin-right: var(--spacing-lg);
    float: left;
}

.system-info {
    display: inline-block;
}

.info-label {
    color: var(--primary);
    font-weight: 600;
}

.info-value {
    color: var(--text-primary);
}

/* Project List */
.project-item {
    padding: var(--spacing-sm) 0;
    border-left: 2px solid transparent;
    padding-left: var(--spacing-md);
    transition: all 0.3s ease;
}

.project-item:hover {
    border-left-color: var(--primary);
    padding-left: var(--spacing-lg);
    background: rgba(138, 82, 255, 0.05);
}

.project-type {
    color: var(--text-dim);
    font-size: 13px;
}

.project-name {
    color: var(--secondary);
    font-weight: 600;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 2px;
}

/* Help Command Table */
.help-table {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-sm) var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

.help-cmd {
    color: var(--secondary);
    font-weight: 600;
}

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

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.skill-tag {
    background: rgba(138, 82, 255, 0.15);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--glow-primary);
}

.skill-tag.primary {
    border-color: var(--accent-green);
    color: var(--accent-green);
    background: rgba(0, 255, 136, 0.15);
}

.skill-tag.primary:hover {
    background: var(--accent-green);
}

/* ===== MOBILE HINT ===== */
.mobile-hint {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(138, 82, 255, 0.9);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    font-size: 13px;
    z-index: 100;
    box-shadow: var(--glow-primary);
    animation: hintPulse 2s ease-in-out infinite;
    display: none;
}

@keyframes hintPulse {
    0%, 100% { opacity: 0.8; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(-5px); }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .terminal-container {
        padding: var(--spacing-sm);
    }
    
    .terminal-window {
        max-width: 100%;
        height: 95vh;
        border-radius: 8px;
    }
    
    .terminal-body {
        padding: var(--spacing-md);
        font-size: 14px;
    }
    
    .input-line {
        font-size: 14px;
    }
    
    .window-dots {
        gap: 6px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
    
    .terminal-title {
        font-size: 12px;
    }
    
    .mobile-hint {
        display: block;
    }
    
    .ascii-art {
        float: none;
        display: block;
        margin-bottom: var(--spacing-md);
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 480px) {
    .terminal-window {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .terminal-container {
        padding: 0;
    }
    
    .terminal-body {
        padding: var(--spacing-sm);
    }
    
    .help-table {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .help-cmd::after {
        content: ': ';
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
    .cosmic-bg,
    #matrix-rain,
    .terminal-header,
    .mobile-hint {
        display: none;
    }
    
    .terminal-window {
        box-shadow: none;
        border: 1px solid #000;
    }
}