/* IDPR Test Suite - Dark Cyberpunk Theme */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Orbitron:wght@400;700;900&family=Space+Grotesk:wght@300;400;500;700&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --accent-red: #ff2d55;
    --accent-red-glow: rgba(255, 45, 85, 0.3);
    --accent-cyan: #00f5ff;
    --accent-cyan-glow: rgba(0, 245, 255, 0.3);
    --accent-purple: #bd00ff;
    --accent-yellow: #ffcc00;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --border-color: #2a2a3a;
    --card-bg: rgba(20, 20, 30, 0.8);
    --gradient-red: linear-gradient(135deg, #ff2d55 0%, #ff6b8a 100%);
    --gradient-cyber: linear-gradient(135deg, #0a0a0f 0%, #1a1a25 50%, #0a0a0f 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(ellipse at 20% 0%, rgba(255, 45, 85, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(0, 245, 255, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    background-attachment: fixed;
}

/* Navigation */
.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 3rem;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--accent-red);
    text-shadow: 0 0 20px var(--accent-red-glow);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-cyan);
    background: rgba(0, 245, 255, 0.1);
    border-color: var(--accent-cyan);
    text-shadow: 0 0 10px var(--accent-cyan-glow);
}

/* Hero Section */
.hero {
    padding: 6rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 45, 85, 0.03) 2px,
            rgba(255, 45, 85, 0.03) 4px
        );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.hero h1 .highlight {
    background: var(--gradient-red);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-cyan);
    text-shadow: 0 0 30px var(--accent-cyan-glow);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 3rem;
}

/* Sections */
section {
    margin-bottom: 5rem;
}

section h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent-red);
    box-shadow: 0 0 10px var(--accent-red-glow);
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-red), var(--accent-purple), var(--accent-cyan));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-red);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 30px var(--accent-red-glow);
}

.category-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.category-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--accent-cyan);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.attack-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.attack-list li {
    background: rgba(255, 45, 85, 0.1);
    border: 1px solid rgba(255, 45, 85, 0.3);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--accent-red);
    font-family: 'JetBrains Mono', monospace;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    margin: 0 auto 1.5rem;
    box-shadow: 0 0 30px var(--accent-red-glow);
}

.step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.step code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--accent-cyan);
}

/* Topic Tags */
.topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.tag {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.tag:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-cyan-glow);
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem;
    border-top: 1px solid var(--border-color);
    background: rgba(10, 10, 15, 0.5);
}

footer p {
    color: var(--accent-yellow);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.footer-small {
    color: var(--text-muted) !important;
    font-size: 0.8rem !important;
    font-family: 'JetBrains Mono', monospace;
}

/* Page Content Styles */
.page-header {
    padding: 4rem 3rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header .subtitle {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Article Cards */
.article-grid {
    display: grid;
    gap: 2rem;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.article-card .card-header {
    padding: 1.5rem 2rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.article-card .card-header h2 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.article-card .card-header h2::after {
    display: none;
}

.attack-type {
    display: inline-block;
    background: rgba(189, 0, 255, 0.2);
    border: 1px solid var(--accent-purple);
    color: var(--accent-purple);
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
}

.article-card .card-body {
    padding: 2rem;
}

.article-card .card-body p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* Hidden injection styles - for testing */
.hidden-injection {
    position: absolute;
    left: -9999px;
    font-size: 1px;
    color: transparent;
}

.invisible-text {
    font-size: 0;
    color: transparent;
    user-select: none;
}

.zero-opacity {
    opacity: 0;
    position: absolute;
    pointer-events: none;
}

/* Warning Box */
.warning-box {
    background: rgba(255, 204, 0, 0.1);
    border: 1px solid var(--accent-yellow);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.warning-box h4 {
    color: var(--accent-yellow);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Code Blocks */
.code-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-block code {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-cyan);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 2rem 1rem;
    }
}