/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Retro Hacker Color Scheme */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --accent-green: #00ff41;
    --accent-blue: #00d4ff;
    --accent-purple: #b400ff;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --border-color: #333333;
    --error-color: #ff4444;
    --warning-color: #ffaa00;
    --success-color: #00ff41;
    
    /* Fonts */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-base: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Borders */
    --border-radius: 4px;
    --border-width: 1px;
}

html {
    /* Ensures overall font size scales fluidly based on viewport width,
       clamping between 14px (min) and 16px (max) for better responsiveness. */
    font-size: clamp(14px, 2.5vw, 16px);
}

body {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-bottom: 2px solid var(--accent-green);
    padding: var(--spacing-base) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.title {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-base);
    position: relative; /* Add relative positioning for glitch pseudo-elements */
}

.glitch-text {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-green);
    text-shadow: 
        0 0 5px var(--accent-green),
        0 0 10px var(--accent-green),
        0 0 15px var(--accent-green);
    position: relative; /* Add relative positioning for glitch effect */
    animation: glitch-anim 2.5s infinite steps(1);
}

/* NEW: Add pseudo-elements for a more pronounced glitch effect */
.glitch-text::before,
.glitch-text::after {
    content: attr(data-text); /* Use a data attribute for the text */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary); /* Match the body background */
    overflow: hidden;
}

.glitch-text::before {
    left: 2px;
    text-shadow: -2px 0 var(--accent-purple);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim-2 2s infinite linear alternate-reverse;
}

.glitch-text::after {
    left: -2px;
    text-shadow: -2px 0 var(--accent-blue), 2px 2px var(--error-color);
    clip: rect(85px, 450px, 90px, 0);
    animation: glitch-anim-1 3s infinite linear alternate-reverse;
}

@keyframes glitch {
    0%, 100% { transform: translate(0); }
    10% { transform: translate(-2px, -1px); }
    20% { transform: translate(2px, 1px); }
    30% { transform: translate(-1px, 2px); }
    40% { transform: translate(1px, -1px); }
    50% { transform: translate(-2px, 2px); }
    60% { transform: translate(2px, -2px); }
    70% { transform: translate(-1px, -1px); }
    80% { transform: translate(1px, 2px); }
    90% { transform: translate(-2px, -1px); }
}

/* NEW: More complex keyframes for the new glitch effect */
@keyframes glitch-anim-1 {
  0% {
    clip: rect(42px, 9999px, 44px, 0);
    transform: skew(0.58deg);
  }
  5% {
    clip: rect(17px, 9999px, 94px, 0);
    transform: skew(0.96deg);
  }
  10% {
    clip: rect(40px, 9999px, 41px, 0);
    transform: skew(0.12deg);
  }
  15% {
    clip: rect(85px, 9999px, 86px, 0);
    transform: skew(0.89deg);
  }
  20% {
    clip: rect(45px, 9999px, 46px, 0);
    transform: skew(0.4deg);
  }
  25% {
    clip: rect(24px, 9999px, 100px, 0);
    transform: skew(0.53deg);
  }
  30% {
    clip: rect(59px, 9999px, 60px, 0);
    transform: skew(0.39deg);
  }
  35% {
    clip: rect(98px, 9999px, 99px, 0);
    transform: skew(0.92deg);
  }
  40% {
    clip: rect(69px, 9999px, 70px, 0);
    transform: skew(0.25deg);
  }
  45% {
    clip: rect(29px, 9999px, 30px, 0);
    transform: skew(0.44deg);
  }
  50% {
    clip: rect(4px, 9999px, 100px, 0);
    transform: skew(0.13deg);
  }
  55% {
    clip: rect(68px, 9999px, 69px, 0);
    transform: skew(0.43deg);
  }
  60% {
    clip: rect(24px, 9999px, 25px, 0);
    transform: skew(0.79deg);
  }
  65% {
    clip: rect(86px, 9999px, 87px, 0);
    transform: skew(0.38deg);
  }
  70% {
    clip: rect(60px, 9999px, 95px, 0);
    transform: skew(0.76deg);
  }
  75% {
    clip: rect(20px, 9999px, 21px, 0);
    transform: skew(0.99deg);
  }
  80% {
    clip: rect(43px, 9999px, 75px, 0);
    transform: skew(0.21deg);
  }
  85% {
    clip: rect(88px, 9999px, 89px, 0);
    transform: skew(0.19deg);
  }
  90% {
    clip: rect(54px, 9999px, 55px, 0);
    transform: skew(0.51deg);
  }
  95% {
    clip: rect(55px, 9999px, 56px, 0);
    transform: skew(0.18deg);
  }
  100% {
    clip: rect(15px, 9999px, 16px, 0);
    transform: skew(0.59deg);
  }
}

@keyframes glitch-anim-2 {
  0% {
    clip: rect(98px, 9999px, 99px, 0);
    transform: skew(0.98deg);
  }
  5% {
    clip: rect(88px, 9999px, 89px, 0);
    transform: skew(0.32deg);
  }
  10% {
    clip: rect(32px, 9999px, 33px, 0);
    transform: skew(0.9deg);
  }
  15% {
    clip: rect(42px, 9999px, 43px, 0);
    transform: skew(0.53deg);
  }
  20% {
    clip: rect(59px, 9999px, 60px, 0);
    transform: skew(0.48deg);
  }
  25% {
    clip: rect(61px, 9999px, 62px, 0);
    transform: skew(0.36deg);
  }
  30% {
    clip: rect(8px, 9999px, 9px, 0);
    transform: skew(0.85deg);
  }
  35% {
    clip: rect(10px, 9999px, 11px, 0);
    transform: skew(0.02deg);
  }
  40% {
    clip: rect(34px, 9999px, 35px, 0);
    transform: skew(0.94deg);
  }
  45% {
    clip: rect(99px, 9999px, 100px, 0);
    transform: skew(0.66deg);
  }
  50% {
    clip: rect(2px, 9999px, 3px, 0);
    transform: skew(0.73deg);
  }
  55% {
    clip: rect(83px, 9999px, 84px, 0);
    transform: skew(0.85deg);
  }
  60% {
    clip: rect(30px, 9999px, 31px, 0);
    transform: skew(0.42deg);
  }
  65% {
    clip: rect(16px, 9999px, 17px, 0);
    transform: skew(0.53deg);
  }
  70% {
    clip: rect(86px, 9999px, 87px, 0);
    transform: skew(0.18deg);
  }
  75% {
    clip: rect(37px, 9999px, 38px, 0);
    transform: skew(0.37deg);
  }
  80% {
    clip: rect(35px, 9999px, 36px, 0);
    transform: skew(0.15deg);
  }
  85% {
    clip: rect(19px, 9999px, 20px, 0);
    transform: skew(0.16deg);
  }
  90% {
    clip: rect(4px, 9999px, 5px, 0);
    transform: skew(0.79deg);
  }
  95% {
    clip: rect(7px, 9999px, 8px, 0);
    transform: skew(0.19deg);
  }
  100% {
    clip: rect(47px, 9999px, 48px, 0);
    transform: skew(0.77deg);
  }
}

@keyframes glitch-anim {
  0% {
    transform: translate(0);
  }
  20% {
    transform: translate(-3px, 3px);
  }
  40% {
    transform: translate(-3px, -3px);
  }
  60% {
    transform: translate(3px, 3px);
  }
  80% {
    transform: translate(3px, -3px);
  }
  to {
    transform: translate(0);
  }
}

.subtitle {
    font-size: var(--font-size-base);
    color: var(--accent-blue);
    font-weight: 300;
    text-align: right;
    padding-left: 10px;
}

.header-controls {
    display: flex;
    gap: var(--spacing-base);
}

/* New container for top-aligned controls in main content */
.main-top-actions {
    display: flex;
    justify-content: flex-end; /* Aligns content to the right */
    padding-bottom: var(--spacing-base); /* Space below the button */
    padding-top: var(--spacing-sm); /* Space above the button */
}

/* Main Content (Grid of Panels) */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg); /* Gap between panels */
    padding: var(--spacing-lg);
    max-width: 1400px; /* Constrain max width for all panels */
    margin: 0 auto;
    width: 100%;
}

/* Common Panel Styling */
.content-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg); /* Unified padding */
    height: fit-content; /* Ensure panels don't stretch vertically */
    margin-bottom: var(--spacing-xl); /* Spacing between panels */
}

/* Remove bottom margin for the last panel in main content */
.main-content > .content-panel:last-of-type {
    margin-bottom: 0;
}

/* Intro Panel Specific Styles - NEW */
.intro-panel {
    text-align: center; /* Keep for overall centering of title and structure within the panel */
}

/* All paragraphs within intro-panel should be left-aligned */
.intro-panel p {
    text-align: left;
}

/* Ensure the intro highlight text content is left-aligned */
.intro-panel .intro-highlight {
    text-align: left;
}

.intro-panel .intro-title {
    color: var(--accent-purple);
    font-size: 2rem;
    margin-bottom: var(--spacing-base);
}

.intro-panel .section-description-large {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-base);
}

.intro-panel .intro-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.intro-panel .intro-steps p {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-base);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    flex: 1;
    min-width: 250px;
    max-width: 300px;
}

.intro-panel .intro-steps p strong {
    color: var(--accent-blue);
}

.intro-panel .intro-action {
    color: var(--accent-green);
    font-weight: bold;
    margin-top: var(--spacing-lg);
}

/* Article Panel (Homepage) */
.article-panel .article-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.article-panel .section-title { /* Using section-title for consistency */
    color: var(--accent-green);
    font-size: 2rem;
    margin-bottom: var(--spacing-base);
    line-height: 1.3;
}

.article-panel .section-description { /* Using section-description for consistency */
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-style: italic;
}

.article-panel .article-content {
    line-height: 1.7;
}

.article-panel .article-content h3 { /* Specific headings within article */
    color: var(--accent-blue);
    margin: var(--spacing-xl) 0 var(--spacing-base) 0;
    font-size: 1.25rem;
}

.article-panel .article-content h4 { /* Specific headings within article */
    color: var(--text-primary);
    margin: var(--spacing-lg) 0 var(--spacing-base) 0;
    font-size: 1.1rem;
}

/* Article Panel paragraphs */
.article-panel .article-content p,
.article-panel .article-content ul,
.article-panel .article-content ol {
    text-align: left; /* Ensure article paragraphs and lists are left-aligned */
}

.article-panel .article-content li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.article-panel .article-cta {
    background: rgba(0, 255, 65, 0.1);
    border: 1px solid var(--accent-green);
    border-radius: var(--border-radius);
    padding: var(--spacing-base);
    margin-top: var(--spacing-xl);
    text-align: left;
}

.cta-link {
    color: var(--accent-green);
    text-decoration: none;
    font-weight: bold;
}

.cta-link:hover {
    text-decoration: underline;
}

/* Knowledge Base Preview Panel (Homepage) */
.kb-preview-panel .section-title { /* Using section-title for consistency */
    color: var(--accent-purple);
    margin-bottom: var(--spacing-base);
}

.kb-preview-panel .section-description { /* Using section-description for consistency */
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Knowledge Base Page Styles */
.knowledge-base-main {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.kb-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

.kb-sidebar { /* Already gets content-panel styles */
    width: 100%;
    box-sizing: border-box;
    position: static;
    margin-bottom: var(--spacing-lg);
}

.kb-sidebar h3 { /* Override section-title color for sidebar category title */
    color: var(--accent-green);
    margin-bottom: 1rem;
    font-size: var(--font-size-lg);
}

.kb-categories {
    list-style: none;
    padding: 0;
}

.kb-categories li {
    margin-bottom: var(--spacing-xs);
}

.kb-nav-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.kb-nav-link:hover, .kb-nav-link.active {
    background: rgba(0, 255, 65, 0.1);
    color: var(--accent-green);
}

.kb-content {
    flex: 1;
    width: 100%;
    box-sizing: border-box;
}

.kb-section {
    display: none;
    margin-bottom: var(--spacing-xl); /* Spacing between sections */
}

.kb-section:last-of-type {
    margin-bottom: 0;
}

.kb-section.active {
    display: block;
}

.kb-section h2 { /* Category title within KB content */
    color: var(--accent-blue);
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: var(--spacing-base);
}

.kb-article { /* Now also gets content-panel styles */
    margin-bottom: var(--spacing-xl); /* Spacing between articles */
    position: relative;
}

.kb-article:last-child {
    margin-bottom: 0;
}

.kb-article h3 {
    color: var(--accent-green);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.kb-article .article-meta {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.kb-article h4 {
    color: var(--accent-blue);
    margin: var(--spacing-lg) 0 var(--spacing-base) 0;
    font-size: 1.2rem;
}

/* Knowledge Base Article paragraphs */
.kb-article p,
.kb-article ul,
.kb-article ol {
    text-align: left;
}

.kb-article li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.kb-article pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-base);
    margin: var(--spacing-base) 0;
    overflow-x: auto;
}

.kb-article code {
    font-family: var(--font-mono);
    color: var(--accent-green);
    font-size: 0.9rem;
}

.kb-article.coming-soon {
    opacity: 0.6;
    position: relative;
}

.coming-soon-badge {
    position: absolute;
    top: var(--spacing-base);
    right: var(--spacing-base);
    background: var(--warning-color);
    color: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: bold;
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.logo-link:hover {
    text-decoration: none;
}

/* Control Panel */
.control-panel { /* Now inherits most styles from .content-panel */
    /* Remove background, border, border-radius, padding, height, margin-bottom as they are now in .content-panel */
    /* Only specific internal styles remain for its panel-sections */
}

.panel-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.panel-section .section-title {
    color: var(--accent-green);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-section .section-description {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-base);
    font-style: italic;
}

.panel-section .section-description-small {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: -0.75rem;
    margin-bottom: var(--spacing-base);
}

.panel-section .obfuscation-strength-note,
.panel-section .obfuscation-backup-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(0, 212, 255, 0.1);
    border-left: 3px solid var(--accent-blue);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-base); /* Adjust top margin for the new notes */
    margin-bottom: 0;
    border-radius: var(--border-radius);
}

.panel-section .obfuscation-backup-note {
    background: rgba(0, 255, 65, 0.1);
    border-left-color: var(--accent-green);
}

.panel-section .section-warning {
    font-size: var(--font-size-sm);
    background: rgba(255, 170, 0, 0.1);
    border-left: 3px solid var(--warning-color);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-base);
    color: var(--warning-color);
}

.panel-section .section-warning strong {
    color: var(--text-secondary);
}

.panel-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

/* New File Upload Styles */
.file-upload-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-base);
}

.file-input-hidden {
    display: none;
}

.file-upload-wrapper .btn {
    flex-shrink: 0; /* Prevent button from shrinking */
}

.file-name-display {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1; /* Allow it to take available space */
    min-width: 0; /* Important for flexbox ellipsis */
}

/* Input Groups */
.input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-base);
}

.input-field {
    flex: 1;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-base);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

/* Specific styling for file input to look like other fields */
input[type="file"].input-field {
    padding-top: calc(var(--spacing-sm) + 1px); /* Adjust for padding and border */
    padding-bottom: calc(var(--spacing-sm) + 1px);
    height: calc(2 * var(--spacing-sm) + 2 * var(--spacing-base) + 2px); /* Match button height, approximately */
    display: flex; /* Allow content to align */
    align-items: center; /* Center content vertically */
}

.code-textarea {
    min-height: 150px; /* Make textarea larger */
    resize: vertical; /* Allow vertical resizing */
}

/* Buttons */
.btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-base);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), #00cc33);
    border-color: var(--accent-green);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #00cc33, var(--accent-green));
    color: var(--bg-primary);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--accent-blue), #0099cc);
    border-color: var(--accent-blue);
    color: var(--bg-primary);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-purple), #9900cc);
    border-color: var(--accent-purple);
    color: var(--text-primary);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #cc8800);
    border-color: var(--warning-color);
    color: var(--bg-primary);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-color), #cc3333);
    border-color: var(--error-color);
    color: var(--text-primary);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* Small spinner for "Start Obfuscation" button */
.button-spinner {
    border: 2px solid var(--bg-primary);
    border-top: 2px solid var(--accent-green);
    border-radius: 50%;
    width: 14px;
    height: 14px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Preset Grid */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.preset-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-base);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-base);
    flex-grow: 1;
}

.preset-btn:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

.preset-btn.active {
    border-color: var(--accent-green);
    background: rgba(0, 255, 65, 0.1);
}

/* Control Groups */
.control-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-base);
}

.control-label {
    min-width: 80px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.control-value {
    min-width: 50px;
    text-align: right;
    color: var(--accent-green);
    font-weight: bold;
}

/* Sliders */
.slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--text-muted);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

/* Toggle Switches */
.toggle-group {
    margin-bottom: var(--spacing-base);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.toggle-input {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 50px;
    height: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.toggle-input:checked + .toggle-slider {
    background: rgba(0, 255, 65, 0.2);
    border-color: var(--accent-green);
}

.toggle-input:checked + .toggle-slider::before {
    transform: translateX(26px);
    background: var(--accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Preview Panel */
.preview-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 160px);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-base) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.preview-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
}

.compatibility-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.preview-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#preview-frame {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.overlay-content {
    text-align: center;
    color: var(--text-secondary);
}

.overlay-content h4 {
    color: var(--accent-blue);
    margin-bottom: var(--spacing-base);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-secondary);
    border: 2px solid var(--accent-green);
    border-radius: var(--border-radius);
    max-width: 90vw;
    max-height: 90vh;
    width: 600px;
    display: flex;
    flex-direction: column;
    animation: slideIn 0.3s ease;
}

.modal-large {
    width: 800px;
    max-width: 95vw;
}

@keyframes slideIn {
    from { transform: translateY(-50px) scale(0.9); }
    to { transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    color: var(--accent-green);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--error-color);
    color: white;
}

.modal-body {
    padding: var(--spacing-lg);
    flex: 1;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    gap: var(--spacing-base);
}

/* Settings Sections */
.settings-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.settings-section h3 {
    color: var(--accent-purple);
    margin-bottom: var(--spacing-base);
}

.settings-section label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Collapsible Sections */
.collapsible-section {
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-tertiary);
}

.collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-base);
    cursor: pointer;
    user-select: none;
}

.collapsible-header h4 {
    color: var(--accent-blue);
    margin: 0;
}

.collapsible-icon {
    color: var(--accent-blue);
    transition: transform 0.3s ease;
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding: 0 var(--spacing-base);
}

.collapsible-section.active > .collapsible-content {
    max-height: 1000px; /* Large enough for content */
    padding: var(--spacing-base);
    border-top: 1px solid var(--border-color);
}

.collapsible-section.active .collapsible-icon {
    transform: rotate(180deg);
}

/* Custom Rules */
.custom-rules-list {
    margin: var(--spacing-base) 0;
    padding: var(--spacing-base);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    min-height: 100px;
}

.custom-rule-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.custom-rule-item:last-child {
    margin-bottom: 0;
}

.rule-selector {
    font-family: var(--font-mono);
    color: var(--accent-green);
}

.rule-remove {
    color: var(--error-color);
    cursor: pointer;
    padding: var(--spacing-xs);
}

/* Export Tabs */
.export-tabs {
    display: flex;
    margin-bottom: var(--spacing-base);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap; /* Allow tabs to wrap on smaller screens */
}

.tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-base) var(--spacing-lg);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-green);
    border-bottom-color: var(--accent-green);
}

/* Code Container */
.code-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: auto;
    max-height: 400px;
}

.code-block {
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* New Export Info Note */
.export-info-note {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-align: left;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-base);
}

/* Tutorial Progress */
.tutorial-progress {
    color: var(--accent-blue);
    font-size: var(--font-size-sm);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Target the "Processing..." paragraph within the loading overlay */
.loading-content {
    text-align: center; /* Keep for overall centering of loading content block */
}

.loading-content p {
    text-align: center; /* Set to center as this is a loading message not article text */
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1500;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-base) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    animation: slideInRight 0.3s ease;
    max-width: 350px;
    font-size: var(--font-size-sm);
    opacity: 1;
}

.toast.success {
    border-color: var(--success-color);
    background: var(--success-color);
    color: var(--bg-primary);
}

.toast.error {
    border-color: var(--error-color);
    background: var(--error-color);
    color: var(--bg-primary);
}

.toast.warning {
    border-color: var(--warning-color);
    background: var(--warning-color);
    color: var(--bg-primary);
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-base);
    }
    
    .control-panel {
        max-height: none;
        margin-bottom: var(--spacing-base);
    }
    
    .preview-panel {
        height: 400px;
    }
    
    .kb-categories {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .kb-categories li {
        margin-bottom: 0;
    }

    .intro-panel .intro-steps p {
        min-width: unset;
        max-width: unset;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-base);
        text-align: center;
    }
    
    .title {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: center; /* Center flex items horizontally */
    }
    
    .subtitle {
        text-align: center; /* Ensure subtitle text is centered */
    }
    
    .glitch-text {
        font-size: 2.5rem;
    }
    
    .main-content {
        padding: var(--spacing-base);
    }
    
    .modal-content {
        width: 95vw;
        margin: var(--spacing-base);
    }
    
    .control-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-label {
        min-width: auto;
        margin-bottom: var(--spacing-xs);
    }
    
    .preset-grid {
        grid-template-columns: 1fr;
    }

    .modal-footer {
        flex-direction: column;
    }

    .intro-panel .intro-highlight {
        max-width: 95%;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-green);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

/* Selection Styling */
::selection {
    background: rgba(0, 255, 65, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(0, 255, 65, 0.3);
    color: var(--text-primary);
}