/* Catppuccin Mocha Theme */
:root {
    /* Base colors */
    --ctp-base: #1e1e2e;
    --ctp-mantle: #181825;
    --ctp-crust: #11111b;
    
    /* Surface colors */
    --ctp-surface0: #313244;
    --ctp-surface1: #45475a;
    --ctp-surface2: #585b70;
    
    /* Overlay colors */
    --ctp-overlay0: #6c7086;
    --ctp-overlay1: #7f849c;
    --ctp-overlay2: #9399b2;
    
    /* Text colors */
    --ctp-text: #cdd6f4;
    --ctp-subtext0: #a6adc8;
    --ctp-subtext1: #bac2de;
    
    /* Accent colors */
    --ctp-rosewater: #f5e0dc;
    --ctp-flamingo: #f2cdcd;
    --ctp-pink: #f5c2e7;
    --ctp-mauve: #cba6f7;
    --ctp-red: #f38ba8;
    --ctp-maroon: #eba0ac;
    --ctp-peach: #fab387;
    --ctp-yellow: #f9e2af;
    --ctp-green: #a6e3a1;
    --ctp-teal: #94e2d5;
    --ctp-sky: #89dceb;
    --ctp-sapphire: #74c7ec;
    --ctp-blue: #89b4fa;
    --ctp-lavender: #b4befe;
}

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

body {
    font-family: 'Noto Sans Mono', monospace;
    background-color: var(--ctp-base);
    color: var(--ctp-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    flex: 1;
}

/* Navigation */
.navbar {
    background-color: var(--ctp-mantle);
    border-bottom: 2px solid var(--ctp-surface0);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ctp-mauve);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-logo:hover {
    color: var(--ctp-pink);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--ctp-subtext1);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover {
    color: var(--ctp-text);
    background-color: var(--ctp-surface0);
}

.nav-links a.active {
    color: var(--ctp-base);
    background-color: var(--ctp-mauve);
    font-weight: 600;
}

/* Markdown Content Styling */
.markdown-content {
    background-color: var(--ctp-mantle);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--ctp-surface0);
}

/* Headings */
.markdown-content h1 {
    color: var(--ctp-mauve);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--ctp-surface1);
    padding-bottom: 0.5rem;
}

.markdown-content h2 {
    color: var(--ctp-blue);
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.markdown-content h3 {
    color: var(--ctp-pink);
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.markdown-content h4 {
    color: var(--ctp-lavender);
    font-size: 1.25rem;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Paragraphs */
.markdown-content p {
    margin-bottom: 1rem;
    color: var(--ctp-text);
}

/* Bold text */
.markdown-content strong {
    color: var(--ctp-peach);
    font-weight: 700;
}

/* Italic text */
.markdown-content em {
    color: var(--ctp-pink);
    font-style: italic;
}

/* Bold and italic */
.markdown-content strong em {
    color: var(--ctp-yellow);
}

/* Links */
.markdown-content a {
    color: var(--ctp-blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
}

.markdown-content a:hover {
    color: var(--ctp-lavender);
    border-bottom-color: var(--ctp-lavender);
}

/* Lists */
.markdown-content ul,
.markdown-content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.markdown-content li {
    margin-bottom: 0.5rem;
    color: var(--ctp-text);
}

.markdown-content ul li::marker {
    color: var(--ctp-green);
}

.markdown-content ol li::marker {
    color: var(--ctp-teal);
    font-weight: 600;
}

/* Code */
.markdown-content code {
    background-color: var(--ctp-crust);
    color: var(--ctp-green);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Noto Sans Mono', monospace;
    font-size: 0.9em;
}

.markdown-content pre {
    background-color: var(--ctp-crust);
    padding: 1.25rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    border: 1px solid var(--ctp-surface0);
}

.markdown-content pre code {
    background-color: transparent;
    padding: 0;
    color: var(--ctp-text);
}

/* Blockquotes */
.markdown-content blockquote {
    border-left: 4px solid var(--ctp-mauve);
    padding-left: 1.25rem;
    margin: 1.5rem 0;
    color: var(--ctp-subtext1);
    font-style: italic;
}

/* Images */
.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    border: 2px solid var(--ctp-surface1);
}

/* Horizontal rule */
.markdown-content hr {
    border: none;
    border-top: 2px solid var(--ctp-surface1);
    margin: 2rem 0;
}

/* Tables */
.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background-color: var(--ctp-crust);
    border-radius: 8px;
    overflow: hidden;
}

.markdown-content th {
    background-color: var(--ctp-surface0);
    color: var(--ctp-mauve);
    font-weight: 600;
    text-align: left;
    padding: 0.75rem;
    border: 1px solid var(--ctp-surface1);
}

.markdown-content td {
    padding: 0.75rem;
    border: 1px solid var(--ctp-surface1);
}

/* Page title */
.page-title {
    color: var(--ctp-mauve);
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Blog list */
.blog-list {
    display: grid;
    gap: 1.5rem;
}

.blog-card {
    background-color: var(--ctp-mantle);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--ctp-surface0);
    transition: all 0.2s;
    cursor: pointer;
}

.blog-card:hover {
    border-color: var(--ctp-mauve);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.blog-card h2 {
    color: var(--ctp-blue);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.blog-card .blog-meta {
    color: var(--ctp-overlay1);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.blog-card p {
    color: var(--ctp-subtext1);
    margin-bottom: 0;
}

/* Back link */
.back-link {
    display: inline-block;
    color: var(--ctp-blue);
    text-decoration: none;
    margin-bottom: 1.5rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--ctp-lavender);
}

/* Footer */
.footer {
    background-color: var(--ctp-mantle);
    border-top: 2px solid var(--ctp-surface0);
    padding: 1.5rem 0;
    margin-top: auto;
    text-align: center;
}

.footer p {
    color: var(--ctp-overlay1);
    font-size: 0.9rem;
}

.footer a {
    color: var(--ctp-mauve);
    font-family: 'Noto Sans Mono', monospace;
    font-size: 0.9rem;
    text-decoration: none;
    margin: 0 0.5rem;
}

.footer a:hover {
    color: var(--ctp-lavender);
}

/* Loading state */
.loading {
    text-align: center;
    color: var(--ctp-overlay1);
    padding: 2rem;
}

/* Error state */
.error {
    color: var(--ctp-red);
    text-align: center;
    padding: 2rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .container {
        padding: 1.5rem 1rem;
    }
    
    .markdown-content {
        padding: 1.5rem;
    }
    
    .markdown-content h1 {
        font-size: 2rem;
    }
    
    .markdown-content h2 {
        font-size: 1.75rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .markdown-content h1 {
        font-size: 1.75rem;
    }
    
    .markdown-content h2 {
        font-size: 1.5rem;
    }
}

/* ============================================
   CHESS PAGE STYLES
   ============================================ */

.chess-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.chess-main-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
}

/* Evaluation Bar Section */
.eval-section {
    display: flex;
    align-items: center;
    justify-content: center;
}

.eval-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.eval-bar {
    width: 32px;
    height: 480px;
    background: var(--ctp-crust);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--ctp-surface1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.eval-bar-black {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ctp-crust);
}

.eval-bar-white {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--ctp-text) 0%, var(--ctp-subtext1) 100%);
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.eval-text {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ctp-text);
    background: var(--ctp-surface0);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    border: 2px solid var(--ctp-surface1);
    min-width: 60px;
    text-align: center;
    font-family: 'Noto Sans Mono', monospace;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Board Section */
.board-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.no-timer-text {
    font-size: 1.2rem;
    color: var(--ctp-subtext0);
    font-style: italic;
    letter-spacing: 1px;
}

/* Point Counters */
.points-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 480px;
    padding: 0.5rem 1rem;
    background: var(--ctp-surface0);
    border-radius: 8px;
    border: 2px solid var(--ctp-surface1);
    font-family: 'Noto Sans Mono', monospace;
}

.points-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ctp-subtext1);
}

.points-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ctp-mauve);
    min-width: 30px;
    text-align: right;
}

.black-points .points-label {
    color: var(--ctp-text);
}

.white-points .points-label {
    color: var(--ctp-text);
}

.board-container {
    position: relative;
    border-radius: 6px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.chessboard {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    border: 5px solid var(--ctp-mauve);
    border-radius: 6px;
    box-shadow: 0 0 0 2px var(--ctp-surface1);
}

.square {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: all 0.15s ease;
    user-select: none;
}

.square.light {
    background-color: #ffffff;
}

.square.dark {
    background-color: #000000;
}

.square.selected {
    background-color: var(--ctp-sky) !important;
    box-shadow: inset 0 0 0 4px var(--ctp-blue);
}

.square:hover {
    filter: brightness(1.2);
    transform: scale(1.02);
}

.piece {
    font-size: 3rem;
    user-select: none;
    line-height: 1;
    pointer-events: none;
    transition: transform 0.15s ease;
}

.piece.white {
    color: var(--ctp-pink);
}

.piece.black {
    color: var(--ctp-blue);
}

/* Start Overlay */
.start-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(17, 17, 27, 0.92);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    z-index: 10;
}

.overlay-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.overlay-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--ctp-mauve);
    letter-spacing: 3px;
    text-shadow: 0 0 20px rgba(203, 166, 247, 0.6);
}

.overlay-subtitle {
    font-size: 1.2rem;
    color: var(--ctp-subtext1);
    letter-spacing: 2px;
}

.start-btn {
    background: linear-gradient(135deg, var(--ctp-mauve) 0%, var(--ctp-pink) 100%);
    color: var(--ctp-crust);
    border: none;
    padding: 1rem 3rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 10px;
    cursor: pointer;
    font-family: 'Noto Sans Mono', monospace;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-top: 1rem;
    box-shadow: 0 6px 20px rgba(203, 166, 247, 0.4);
}

.start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(203, 166, 247, 0.6);
}

.start-btn:active {
    transform: translateY(-1px);
}

.new-game-btn {
    background: var(--ctp-surface0);
    color: var(--ctp-text);
    border: 2px solid var(--ctp-surface1);
    padding: 0.75rem 2rem;
    font-family: 'Noto Sans Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.new-game-btn:hover {
    background: var(--ctp-surface1);
    border-color: var(--ctp-mauve);
    color: var(--ctp-mauve);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(203, 166, 247, 0.3);
}

/* Info Section (Bot Card) */
.info-section {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.bot-card {
    background: var(--ctp-mantle);
    border: 2px solid var(--ctp-surface0);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    min-width: 220px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.bot-avatar {
    width: 90px;
    height: 90px;
    background: radial-gradient(circle at 30% 30%, var(--ctp-surface1), var(--ctp-crust));
    border: 4px solid var(--ctp-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: var(--ctp-red);
    box-shadow: 0 6px 20px rgba(243, 139, 168, 0.3);
    line-height: 1;
}

.bot-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--ctp-red);
    letter-spacing: 3px;
    text-transform: uppercase;
    text-shadow: 0 2px 8px rgba(243, 139, 168, 0.3);
}

.bot-elo {
    font-size: 1rem;
    color: var(--ctp-overlay1);
    letter-spacing: 1px;
    font-weight: 600;
}

.bot-message {
    margin-top: 1rem;
    padding: 1rem 1.5rem;
    background: var(--ctp-surface0);
    border-radius: 20px;
    border-bottom-left-radius: 6px;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 3px;
    min-height: 50px;
    min-width: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ctp-text);
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.bot-message::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 25px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid var(--ctp-surface0);
}

.bot-message.lose {
    background: var(--ctp-red);
    color: var(--ctp-crust);
}

.bot-message.lose::before {
    border-bottom-color: var(--ctp-red);
}

.bot-message.win {
    background: var(--ctp-green);
    color: var(--ctp-crust);
}

.bot-message.win::before {
    border-bottom-color: var(--ctp-green);
}

.bot-message.draw {
    background: var(--ctp-yellow);
    color: var(--ctp-crust);
}

.bot-message.draw::before {
    border-bottom-color: var(--ctp-yellow);
}

/* Easter egg — ??? link on blog page */
.easter-egg {
    position: fixed;
    bottom: 0.75rem;
    right: 0.75rem;
    color: var(--ctp-overlay0);
    opacity: 0.45;
    font-size: 0.75rem;
    text-decoration: none;
    padding: 0.25rem 0.4rem;
    border-radius: 4px;
    transition: all 0.4s ease;
    z-index: 50;
    font-family: 'Noto Sans Mono', monospace;
    user-select: none;
    pointer-events: auto;
}

.easter-egg:hover {
    opacity: 0.9;
    color: var(--ctp-mauve);
    background: var(--ctp-surface0);
    text-shadow: 0 0 6px rgba(203, 166, 247, 0.5);
}

/* Chess responsive */
@media (max-width: 1100px) {
    .chess-main-layout {
        flex-direction: column;
        align-items: center;
    }
    
    .eval-section,
    .info-section {
        width: 100%;
        max-width: 500px;
    }
    
    .bot-card {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .bot-message {
        margin-top: 0;
    }
    
    .bot-message::before {
        display: none;
    }
}

@media (max-width: 600px) {
    .chessboard {
        grid-template-columns: repeat(8, 44px);
        grid-template-rows: repeat(8, 44px);
    }
    
    .square {
        width: 44px;
        height: 44px;
    }
    
    .piece {
        font-size: 2.2rem;
    }
    
    .eval-bar {
        height: 352px;
        width: 28px;
    }
    
    .bot-avatar {
        width: 70px;
        height: 70px;
        font-size: 2.8rem;
    }
    
    .bot-name {
        font-size: 1.4rem;
    }
    
    .overlay-title {
        font-size: 1.8rem;
    }
}