/* ===================================
   CLI GUIDE - TERMINAL AESTHETIC
   =================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

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

:root {
    /* Terminal Color Palette */
    --terminal-green: #00ff41;
    --terminal-cyan: #00d9ff;
    --terminal-yellow: #ffff00;
    --terminal-orange: #ff8c00;
    --terminal-red: #ff0040;
    
    /* Base Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f35;
    --surface: #252d45;
    
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-dim: #6b7280;
    
    --border-color: #2d3748;
    --border-accent: #00ff41;
    
    --code-bg: #0d1117;
    --code-text: #c9d1d9;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Space Mono', monospace;
    --font-body: 'JetBrains Mono', monospace;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 255, 65, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 255, 65, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 255, 65, 0.2);
    --glow: 0 0 20px rgba(0, 255, 65, 0.3);
}

body {
    font-family: var(--font-body);
    line-height: 1.7;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Scanline effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 65, 0.03) 0px,
        rgba(0, 0, 0, 0.03) 1px,
        rgba(0, 255, 65, 0.03) 2px
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% { transform: translateY(0); }
    100% { transform: translateY(10px); }
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */

header {
    background: rgba(26, 31, 53, 0.9);
    border-bottom: 2px solid var(--border-accent);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 255, 65, 0.1);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--terminal-green);
    margin: 0;
    font-family: var(--font-mono);
    text-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
    letter-spacing: -0.05em;
}

.logo::before {
    content: '> ';
    color: var(--terminal-cyan);
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-xs);
    margin: 0;
    padding: 0;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
    border: 1px solid transparent;
    position: relative;
}

nav a:hover {
    color: var(--terminal-green);
    border-color: var(--terminal-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
    transform: translateY(-2px);
}

nav a.active {
    color: var(--terminal-green);
    background: rgba(0, 255, 65, 0.1);
    border-color: var(--terminal-green);
    box-shadow: var(--glow);
}

/* ===================================
   MAIN CONTENT AREA
   =================================== */

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    flex: 1;
    width: 100%;
}

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out;
}

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

.page-header h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--terminal-green);
    font-weight: 700;
    text-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===================================
   COMMAND CARDS
   =================================== */

.command-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.5s ease-out backwards;
}

.command-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--terminal-green), var(--terminal-cyan));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.command-card:hover::before {
    opacity: 1;
}

.command-card:hover {
    transform: translateX(8px);
    border-color: var(--terminal-green);
    box-shadow: -4px 0 20px rgba(0, 255, 65, 0.2);
}

.command-card:nth-child(1) { animation-delay: 0.1s; }
.command-card:nth-child(2) { animation-delay: 0.2s; }
.command-card:nth-child(3) { animation-delay: 0.3s; }
.command-card:nth-child(4) { animation-delay: 0.4s; }
.command-card:nth-child(5) { animation-delay: 0.5s; }

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

.command-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.command-name {
    background: var(--code-bg);
    color: var(--terminal-green);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    border: 1px solid var(--border-accent);
    box-shadow: var(--shadow-sm);
}

.command-full {
    color: var(--text-dim);
    font-size: 0.9rem;
    font-style: italic;
}

.command-content h3 {
    color: var(--terminal-cyan);
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    margin-top: var(--spacing-md);
    font-weight: 600;
}

.command-content p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.command-content ul {
    list-style: none;
    padding-left: var(--spacing-md);
}

.command-content ul li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.command-content ul li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--terminal-green);
    font-weight: bold;
}

/* ===================================
   CODE BLOCKS
   =================================== */

.code-block {
    background: var(--code-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    overflow-x: auto;
    border: 1px solid #21262d;
    position: relative;
    font-size: 0.9rem;
}

.code-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--terminal-green), transparent);
}

.code-block code {
    display: block;
    font-family: var(--font-mono);
    color: var(--code-text);
    line-height: 1.8;
    padding: 0;
    background: none;
}

.code-block .output {
    color: var(--terminal-cyan);
    padding-left: var(--spacing-sm);
}

.code-block .comment {
    color: var(--text-dim);
    font-style: italic;
}

.code-block .error {
    color: var(--terminal-red);
}

.code-block.danger {
    border: 2px solid var(--terminal-red);
    background: rgba(255, 0, 64, 0.05);
}

.code-block.danger::before {
    background: linear-gradient(90deg, var(--terminal-red), transparent);
}

code {
    background: rgba(0, 255, 65, 0.1);
    color: var(--terminal-green);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    border: 1px solid rgba(0, 255, 65, 0.2);
}

/* ===================================
   TIP SECTIONS
   =================================== */

.tip-section {
    margin-bottom: var(--spacing-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--terminal-green);
    text-shadow: 0 0 15px rgba(0, 255, 65, 0.4);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Tips Grid Layout */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.tip-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.tip-card:hover {
    transform: translateY(-8px);
    border-color: var(--terminal-green);
    box-shadow: 0 8px 24px rgba(0, 255, 65, 0.2);
}

.shortcut-key {
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

kbd {
    display: inline-block;
    padding: 0.5rem 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: var(--code-bg);
    color: var(--terminal-cyan);
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 0 rgba(0, 217, 255, 0.3),
                0 4px 8px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--terminal-cyan);
    font-weight: 600;
}

.tip-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
}

.tip-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Mistake Cards */
.mistake-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mistake-card {
    background: rgba(255, 0, 64, 0.05);
    border: 2px solid var(--terminal-red);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.mistake-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.mistake-card h3 {
    color: var(--terminal-red);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.mistake-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.tip-advice {
    background: rgba(255, 140, 0, 0.1);
    border-left: 4px solid var(--terminal-orange);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

/* Pro Tips */
.pro-tips {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.pro-tip-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--terminal-cyan);
    transition: all 0.3s ease;
}

.pro-tip-card:hover {
    transform: translateX(8px);
    box-shadow: -4px 0 20px rgba(0, 217, 255, 0.2);
}

.pro-tip-card h3 {
    color: var(--terminal-cyan);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.pro-tip-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Platform Cards */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.platform-card:hover {
    border-color: var(--terminal-cyan);
    transform: scale(1.02);
}

.platform-card h3 {
    color: var(--terminal-green);
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
    font-weight: 600;
}

.platform-card ul {
    list-style: none;
    padding: 0;
}

.platform-card ul li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-left: var(--spacing-md);
    position: relative;
}

.platform-card ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--terminal-cyan);
}

.platform-card ul li:last-child {
    border-bottom: none;
}

.platform-tip {
    grid-column: 1 / -1;
    background: rgba(0, 217, 255, 0.05);
    border: 2px solid var(--terminal-cyan);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.platform-tip h3 {
    color: var(--terminal-cyan);
    margin-bottom: var(--spacing-sm);
}

.platform-tip p {
    color: var(--text-secondary);
}

/* ===================================
   BUTTONS & CALL TO ACTION
   =================================== */

.next-steps {
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 255, 65, 0.1), rgba(0, 217, 255, 0.1));
    border: 2px solid var(--terminal-green);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.next-steps::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 65, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.next-steps h2 {
    color: var(--terminal-green);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.next-steps p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.btn-primary {
    display: inline-block;
    background: var(--terminal-green);
    color: var(--bg-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 255, 65, 0.3);
    border: 2px solid var(--terminal-green);
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 255, 65, 0.5);
    background: transparent;
    color: var(--terminal-green);
}

/* ===================================
   FOOTER
   =================================== */

footer {
    background: var(--bg-card);
    color: var(--text-secondary);
    padding: var(--spacing-lg);
    text-align: center;
    margin-top: auto;
    border-top: 2px solid var(--border-accent);
}

footer p {
    margin: 0;
    font-size: 0.9rem;
}

/* ===================================
   SEARCH BOX
   =================================== */

.search-container {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    position: relative;
}

.search-box {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-box:focus {
    outline: none;
    border-color: var(--terminal-green);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.3);
}

.search-box::placeholder {
    color: var(--text-dim);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    main {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .command-card {
        padding: var(--spacing-md);
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.warning-section .section-header h2 {
    color: var(--terminal-orange);
}

.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* Loading animation for search results */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    animation: shimmer 2s infinite linear;
    background: linear-gradient(
        to right,
        var(--bg-card) 4%,
        var(--surface) 25%,
        var(--bg-card) 36%
    );
    background-size: 1000px 100%;
}