/* -------------------------------------------------------------
 * DOJO SHADOWS — DESIGN SYSTEM & STYLING
 * ------------------------------------------------------------- */

/* Reset & Base Variables */
:root {
    --bg-primary: #0a0a0c;
    --bg-secondary: #121217;
    --bg-tertiary: #191922;
    --border-color: #272733;
    
    --accent-crimson: #e63946;
    --accent-gold: #c5a059;
    --accent-gold-glow: rgba(197, 160, 89, 0.15);
    --accent-crimson-glow: rgba(230, 57, 70, 0.2);
    
    --text-main: #f5f5f7;
    --text-muted: #8e8e9f;
    --text-dark: #000000;
    
    /* Category Colors */
    --cat-crypto: #a855f7;
    --cat-forensic: #3b82f6;
    --cat-osint: #06b6d4;
    --cat-pwn: #f97316;
    --cat-rev: #ef4444;
    --cat-web: #10b981;
    --cat-stegano: #ec4899;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.7);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.9);
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
}

/* Background Grids & Ambient Auras */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    z-index: -3;
    pointer-events: none;
}

.aura-red {
    position: fixed;
    top: -200px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-crimom-glow) 0%, rgba(0,0,0,0) 70%);
    background: radial-gradient(circle, rgba(230, 57, 70, 0.06) 0%, rgba(0,0,0,0) 75%);
    z-index: -2;
    pointer-events: none;
}

.aura-gold {
    position: fixed;
    bottom: -150px;
    left: -150px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(197, 160, 89, 0.05) 0%, rgba(0,0,0,0) 75%);
    z-index: -2;
    pointer-events: none;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}

/* Main Container Layout */
.app-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Component */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.torii-logo {
    filter: drop-shadow(0 0 12px rgba(230, 57, 70, 0.4));
    transition: var(--transition);
    transform-origin: center;
}

.logo-area:hover .torii-logo {
    transform: rotate(5deg) scale(1.05);
}

.torii-gold {
    stroke: var(--accent-gold);
    fill: none;
}

.torii-red {
    stroke: var(--accent-crimson);
    fill: var(--accent-crimson);
}

.title-group h1 {
    font-family: 'Cinzel', serif;
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.title-group .subtitle {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--text-muted);
    font-weight: 500;
    display: block;
    margin-top: 0.25rem;
}

.header-stats {
    display: flex;
    gap: 1rem;
}

.stat-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-box:hover {
    border-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.stat-box.gold {
    border-color: rgba(197, 160, 89, 0.4);
    box-shadow: 0 0 15px rgba(197, 160, 89, 0.1);
}

.stat-box.gold .stat-value {
    color: var(--accent-gold);
    text-shadow: 0 0 8px rgba(197, 160, 89, 0.3);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 0.15rem;
}

/* Controls Section (Filters & Search) */
.controls-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.search-wrapper {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: var(--transition);
}

#search-input {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.1rem 1.25rem 1.1rem 3.25rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

#search-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px rgba(197, 160, 89, 0.15);
    background-color: var(--bg-tertiary);
}

#search-input:focus + .search-icon {
    color: var(--accent-gold);
}

/* Category Navigation Tabs */
.category-tabs {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
}

.category-tabs::-webkit-scrollbar {
    display: none; /* Hide scrollbar for Chrome/Safari */
}

.tab-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.tab-btn:hover {
    color: #ffffff;
    background-color: var(--bg-tertiary);
    border-color: rgba(255,255,255,0.15);
}

.tab-btn.active {
    color: #ffffff;
    background-color: var(--accent-crimson);
    border-color: var(--accent-crimson);
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4);
}

/* Challenges Grid Section */
.grid-section {
    min-height: 400px;
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Loading & Empty States */
.loading-state, .empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5rem 2rem;
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(197, 160, 89, 0.1);
    border-top: 3px solid var(--accent-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1.25rem;
}

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

.empty-state i {
    font-size: 3rem;
    color: var(--border-color);
    margin-bottom: 1.25rem;
}

.empty-state h3 {
    font-family: 'Cinzel', serif;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-muted);
}

/* Challenge Cards */
.challenge-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 200px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.challenge-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--cat-color, var(--accent-gold));
}

.challenge-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 15px var(--cat-glow, var(--accent-gold-glow));
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-category {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    color: var(--cat-color, var(--accent-gold));
}

.card-points {
    background-color: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #ffffff;
}

.challenge-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.03);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card-difficulty {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 600;
}

.card-difficulty.easy { color: #10b981; }
.card-difficulty.medium { color: #f59e0b; }
.card-difficulty.hard { color: #ef4444; }

.card-author {
    font-style: italic;
}

/* Category Glow Helper Variables */
.cat-crypto { --cat-color: var(--cat-crypto); --cat-glow: rgba(168, 85, 247, 0.15); }
.cat-forensic { --cat-color: var(--cat-forensic); --cat-glow: rgba(59, 130, 246, 0.15); }
.cat-osint { --cat-color: var(--cat-osint); --cat-glow: rgba(6, 182, 212, 0.15); }
.cat-pwn { --cat-color: var(--cat-pwn); --cat-glow: rgba(249, 115, 22, 0.15); }
.cat-rev { --cat-color: var(--cat-rev); --cat-glow: rgba(239, 68, 68, 0.15); }
.cat-web { --cat-color: var(--cat-web); --cat-glow: rgba(16, 185, 129, 0.15); }
.cat-stegano { --cat-color: var(--cat-stegano); --cat-glow: rgba(236, 72, 153, 0.15); }

/* Slide-over Drawer for Writeups */
.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.65);
    backdrop-filter: blur(8px);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.drawer-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 750px;
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 100;
    box-shadow: -10px 0 40px rgba(0,0,0,0.8);
    display: flex;
    flex-direction: column;
    transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.drawer.active {
    right: 0;
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid transparent;
}

.close-btn:hover {
    color: #ffffff;
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    transform: rotate(90deg);
}

.drawer-header {
    padding: 3rem 2.5rem 1.5rem 2.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.category-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    color: #ffffff;
}

#drawer-title {
    font-family: 'Cinzel', serif;
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

/* Metadata Grid */
.metadata-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.meta-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.meta-item i {
    font-size: 1.25rem;
    color: var(--accent-gold);
}

.meta-title {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    display: block;
}

.meta-desc {
    font-size: 0.9rem;
    font-weight: 700;
    color: #ffffff;
}

/* Flag Section inside drawer */
.flag-section {
    background-color: rgba(230, 57, 70, 0.03);
    border: 1px dashed rgba(230, 57, 70, 0.3);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.flag-label {
    font-size: 0.75rem;
    color: var(--accent-crimson);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}

.flag-container {
    display: flex;
    align-items: center;
    background-color: #000000;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    justify-content: space-between;
    gap: 0.5rem;
}

.flag-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    color: #4ade80;
    word-break: break-all;
    user-select: all;
    transition: filter 0.3s ease;
}

.flag-code.blur {
    filter: blur(5px);
    user-select: none;
}

.flag-container button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 0.25rem;
    transition: var(--transition);
}

.flag-container button:hover {
    color: #ffffff;
}

/* Downloads section inside drawer */
.downloads-section {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 1.25rem;
    margin-bottom: 1.5rem;
}

.section-subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.downloads-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.file-link {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--accent-gold);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: var(--transition);
}

.file-link:hover {
    background-color: var(--border-color);
    color: #ffffff;
    transform: translateY(-1px);
}

/* Drawer Body (Markdown Content) */
.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 2.5rem;
}

/* Markdown Rendering Custom Styles */
.markdown-container {
    font-size: 1.05rem;
    color: #e4e4e7;
    line-height: 1.7;
}

.markdown-container h1, 
.markdown-container h2, 
.markdown-container h3, 
.markdown-container h4 {
    font-family: 'Cinzel', serif;
    color: #ffffff;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.markdown-container h1 { font-size: 1.6rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
.markdown-container h2 { font-size: 1.35rem; }
.markdown-container h3 { font-size: 1.15rem; }

.markdown-container p {
    margin-bottom: 1.25rem;
}

.markdown-container code {
    font-family: 'JetBrains Mono', monospace;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--accent-gold);
}

.markdown-container pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
    font-size: 0.85rem;
}

.markdown-container pre {
    margin: 1.5rem 0;
    border-radius: 8px !important;
    border: 1px solid var(--border-color);
}

.markdown-container ul, .markdown-container ol {
    margin-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.markdown-container li {
    margin-bottom: 0.5rem;
}

/* Table Styles */
.markdown-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.markdown-container th, .markdown-container td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-container th {
    background-color: var(--bg-primary);
    color: #ffffff;
    font-weight: 700;
}

.markdown-container tr:nth-child(even) {
    background-color: rgba(255,255,255,0.02);
}

/* Blockquote & Alerts */
.markdown-container blockquote {
    border-left: 4px solid var(--accent-gold);
    background-color: rgba(197, 160, 89, 0.03);
    padding: 0.75rem 1.25rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-muted);
}

/* Toast Alert popup */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--accent-gold);
    color: #ffffff;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    z-index: 999;
    box-shadow: var(--shadow-lg);
    pointer-events: none;
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.3s ease;
}

.toast.active {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .header-stats {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .app-container {
        padding: 1.5rem 1rem;
    }
    
    .grid-section {
        margin-top: 1rem;
    }

    .challenges-grid {
        grid-template-columns: 1fr;
    }
    
    .metadata-grid {
        grid-template-columns: 1fr;
    }

    .drawer {
        max-width: 100%;
    }
    
    .drawer-header {
        padding: 2.5rem 1.5rem 1.25rem 1.5rem;
    }
    
    .drawer-body {
        padding: 1.5rem;
    }
}

/* Footer Section */
.app-footer {
    margin-top: auto;
    padding: 3rem 1.5rem 1.5rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ninja-nickname {
    color: var(--accent-gold);
    font-weight: 700;
    font-family: 'Cinzel', serif;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--accent-gold-glow);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.25rem;
}

.social-link {
    color: var(--text-muted);
    font-size: 1.4rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link.github-link:hover {
    color: #ffffff;
    transform: translateY(-2px);
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.4));
}

.social-link.discord-link:hover {
    color: #5865F2; /* Discord Blurple */
    transform: translateY(-2px);
    filter: drop-shadow(0 0 8px rgba(88, 101, 242, 0.6));
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}