:root {
    /* Color Palette - Paperish with Red/White/Blue Theme */
    --bg-color: #fdfbf7;        /* Off-white paper background */
    --card-bg: #ffffff;         /* White card background */
    --card-bg-hover: #f0f4f8;   /* Light gray/blue hover */
    --primary-color: #0f172a;   /* Dark navy text for primary */
    --text-color: #334155;      /* Dark gray text */
    --text-muted: #64748b;      /* Muted gray text */

    --accent-red: #b22234;      /* Classic red */
    --accent-blue: #3c3b6e;     /* Classic navy blue */
    --accent-color: #b22234;    /* Default accent to red */
    --accent-hover: #d32f2f;
    --accent-glow: rgba(178, 34, 52, 0.3);

    --border-color: #cbd5e1;    /* Light border */
    --border-radius: 0px;       /* Sharp corners for paper look */

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 15px var(--accent-glow);

    --font-heading: 'Merriweather', serif;
    --font-body: 'Merriweather', serif;

    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

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

@keyframes paperUnfold {
    0% {
        opacity: 0;
        transform: rotateX(-15deg) rotateY(-10deg) scale(0.95);
        transform-origin: left center;
    }
    100% {
        opacity: 1;
        transform: rotateX(0) rotateY(0) scale(1);
        transform-origin: left center;
    }
}

@keyframes paperFold {
    0% {
        opacity: 1;
        transform: rotateX(0) rotateY(0) scale(1);
        transform-origin: right center;
    }
    100% {
        opacity: 0;
        transform: rotateX(15deg) rotateY(10deg) scale(0.95);
        transform-origin: right center;
    }
}

body.page-exit {
    animation: paperFold 0.5s cubic-bezier(0.5, 0, 0.75, 0) forwards;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Subtle paper texture using CSS gradient noise pattern simulation */
    background-image: radial-gradient(#e2e8f0 1px, transparent 1px);
    background-size: 20px 20px;
    animation: paperUnfold 0.7s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    perspective: 1000px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
header {
    background-color: rgba(253, 251, 247, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 3px double var(--accent-blue);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    /* Force new stacking context to overlay properly over animated items below */
    transform: translateZ(0);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    height: 40px;
    width: auto;
    border-radius: var(--border-radius);
    /* Filter to make the original logo fit the theme better if it doesn't already */
    filter: sepia(1) hue-rotate(200deg) saturate(3);
}

/* Switch Version Link */
.switch-version {
    font-size: 0.9rem;
    color: var(--accent-red);
    font-weight: 700;
    border: 1px solid var(--accent-red);
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
}

.switch-version:hover {
    background-color: var(--accent-red);
    color: white;
}

/* Main Content */
main.container {
    flex: 1;
    padding: 6rem 1rem;
}

.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 500px;
    margin-bottom: 6rem;
    padding: 4rem 2rem;
    /* Use the same hero image but maybe overlay a different gradient */
    background-image: url('assets/hero.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--border-radius);
    border: 4px solid var(--accent-blue);
    overflow: hidden;
    animation: fadeIn 0.8s ease-out;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(60, 59, 110, 0.85) 0%, rgba(178, 34, 52, 0.7) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.hero p {
    font-size: 1.5rem;
    color: #f1f5f9;
    line-height: 1.6;
    margin-bottom: 0;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

/* Grid */
.fallacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
    padding-bottom: 4rem;
    animation: slideUp 0.6s ease-out 0.2s backwards;
}

.fallacy-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-top: 4px solid var(--accent-blue);
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
    transition: all var(--transition-medium);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.fallacy-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--accent-red);
    background-color: var(--card-bg-hover);
}

.card-icon {
    font-size: 3rem;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    background-color: rgba(60, 59, 110, 0.1);
    border-radius: 0; /* Sharp for paper theme */
    border: 1px dashed var(--accent-blue);
    transition: transform var(--transition-medium), background-color var(--transition-medium);
}

.fallacy-card:hover .card-icon {
    transform: scale(1.1);
    color: var(--accent-red);
    border-color: var(--accent-red);
    background-color: rgba(178, 34, 52, 0.1);
}

.card-icon svg {
    width: 2.5rem;
    height: 2.5rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2px;
}

.card-content h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.card-content p {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.5;
}

/* Fallacy Detail Page */
.fallacy-detail {
    max-width: 900px;
    margin: 0 auto;
    padding-top: 0; /* Let main container handle padding */
    animation: fadeIn 0.5s ease-out;
}

.fallacy-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 2px dashed var(--accent-blue);
    position: relative;
    /* Move the icon slightly down so it doesn't clip the sticky header */
    margin-top: 2rem;
}

.fallacy-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: var(--accent-red);
}

.icon-circle {
    width: 120px;
    height: 120px;
    background: white;
    border: 3px double var(--accent-blue);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-sm);
}

.icon-circle i {
    font-size: 4rem;
    color: var(--accent-red);
}

.icon-circle svg {
    width: 4rem;
    height: 4rem;
    fill: none;
    stroke: var(--accent-red);
    stroke-width: 2px;
}

.fallacy-header h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.03em;
}

.fallacy-content {
    display: grid;
    gap: 3rem;
}

.fallacy-content section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--accent-blue);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: transform var(--transition-medium);
}

.fallacy-content section:nth-child(even) {
    border-left: 5px solid var(--accent-red);
}

.fallacy-content h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.fallacy-content p {
    font-size: 1.15rem;
    color: var(--text-color);
}

/* Specific styling for the Example section */
.fallacy-content .example {
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 27px,
        #e2e8f0 27px,
        #e2e8f0 28px
    );
    background-color: white;
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--accent-red);
    line-height: 28px;
    padding-top: 1rem;
}

.example-box {
    position: relative;
    padding-left: 1rem;
}

.example-box i {
    font-size: 2rem;
    color: var(--accent-red);
    opacity: 0.3;
    position: absolute;
    top: -1rem;
    left: -1rem;
}

.example-box p {
    font-style: italic;
    color: var(--text-color);
    font-weight: 500;
    margin-top: 0.5rem;
}

.navigation-links {
    margin-top: 6rem;
    margin-bottom: 2rem;
    text-align: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 12px 24px;
    border-radius: 0;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-medium);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-secondary {
    background-color: var(--card-bg);
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

.btn-secondary:hover {
    background-color: var(--accent-blue);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px var(--accent-red);
}

/* Footer */
footer {
    background-color: white;
    color: var(--text-muted);
    padding: 3rem 0;
    margin-top: auto;
    text-align: center;
    border-top: 3px double var(--accent-blue);
    font-size: 0.9rem;
}

/* Intro Section */
.intro-section {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
    padding: 0 1rem;
}

.intro-section h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.intro-content p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.7;
}

/* Search */
.search-container {
    max-width: 600px;
    margin: 0 auto 3rem;
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1.5rem;
    color: var(--text-muted);
    font-size: 1.2rem;
    pointer-events: none;
}

#fallacy-search {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
    background-color: white;
    border: 2px solid var(--accent-blue);
    border-radius: 0;
    outline: none;
    transition: all var(--transition-medium);
}

#fallacy-search:focus {
    border-color: var(--accent-red);
    box-shadow: 4px 4px 0px rgba(178, 34, 52, 0.2);
}

/* Buttons */
.btn-primary {
    background-color: var(--accent-red);
    color: #fff;
    border: 2px solid var(--accent-red);
    box-shadow: 4px 4px 0px var(--accent-blue);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 6px 6px 0px var(--accent-blue);
}

/* Share Section */
.share-section .share-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.share-btn {
    font-size: 0.9rem;
    padding: 10px 20px;
}