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

:root {
    --bg: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2128;
    --border: #30363d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --crypto: #d2a8ff;
    --rev: #ff7b72;
    --forensics: #7ee787;
    --misc: #ffa657;
    --web: #58a6ff;
    --pwn: #f778ba;
    --osint: #79c0ff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.site-title {
    color: var(--text);
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    flex: 1;
}

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.footer-sep {
    color: var(--text-muted);
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.footer-link:hover {
    color: var(--accent);
}

.footer-github {
    color: var(--text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    transition: color 0.15s;
}

.footer-github:hover {
    color: var(--accent);
}

/* Search Box */
.search-box {
    width: 100%;
    max-width: 400px;
    padding: 0.6rem 1rem;
    margin-top: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.search-box::placeholder {
    color: var(--text-muted);
}

.search-box:focus {
    border-color: var(--accent);
}

/* Index Page */
.search-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-row .search-box {
    margin-top: 0;
}

.search-count {
    color: var(--text-muted);
    font-size: 0.85rem;
    white-space: nowrap;
}

.index-header {
    margin-bottom: 2rem;
}

.index-header h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.solve-count {
    color: var(--text-muted);
}

.category-section {
    margin-bottom: 2.5rem;
}

.category-section h2 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
}

.challenge-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: border-color 0.15s, background 0.15s;
    position: relative;
}

.challenge-card:hover {
    border-color: var(--accent);
    background: #1f2937;
}

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

.card-link::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 8px;
}

.author-link {
    position: relative;
    z-index: 1;
    color: var(--accent);
    text-decoration: none;
}

.author-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.card-name {
    font-weight: 600;
    font-size: 1.05rem;
}

.card-flag {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    word-break: break-all;
}

/* Author */
.card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.15rem 0.75rem;
}

.card-author, .card-credit {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.writeup-author {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.writeup-credit {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.credit-link {
    position: relative;
    z-index: 1;
    color: var(--accent);
    text-decoration: none;
}

.credit-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Category Badges */
.category-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cat-crypto { background: rgba(210, 168, 255, 0.15); color: var(--crypto); }
.cat-rev { background: rgba(255, 123, 114, 0.15); color: var(--rev); }
.cat-forensics { background: rgba(126, 231, 135, 0.15); color: var(--forensics); }
.cat-misc { background: rgba(255, 166, 87, 0.15); color: var(--misc); }
.cat-web { background: rgba(88, 166, 255, 0.15); color: var(--web); }
.cat-pwn { background: rgba(247, 120, 186, 0.15); color: var(--pwn); }
.cat-osint { background: rgba(121, 192, 255, 0.15); color: var(--osint); }

/* Challenge Info Card (CTFd-style) */
.challenge-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.challenge-info-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.challenge-info-left {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.challenge-info-name {
    font-size: 1.35rem;
    margin: 0;
}

.challenge-info-attribution {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.challenge-info-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.challenge-info-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
}

.challenge-info-desc {
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.challenge-info-desc p {
    margin: 0 0 0.5rem;
}

.challenge-info-desc p:last-child {
    margin-bottom: 0;
}

.challenge-info-desc code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.85em;
    background: rgba(110, 118, 129, 0.2);
    padding: 0.15em 0.4em;
    border-radius: 3px;
}

.challenge-info-connection {
    margin-bottom: 0.75rem;
}

.challenge-info-connection code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.9rem;
    background: rgba(110, 118, 129, 0.2);
    padding: 0.3em 0.6em;
    border-radius: 4px;
}

.challenge-info-bottom {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.challenge-info-files {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.challenge-info-file {
    display: inline-block;
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.8rem;
    text-decoration: none;
}

.challenge-info-file:hover {
    background: rgba(88, 166, 255, 0.3);
}

.challenge-info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.challenge-info-tag {
    display: inline-block;
    background: rgba(110, 118, 129, 0.2);
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* Writeup Meta */
.writeup-meta {
    margin-bottom: 1.5rem;
}

.writeup-meta h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Writeup Page */
.writeup-header {
    margin-bottom: 1rem;
}

.back-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 0.75rem;
}

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

.writeup-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.writeup-body {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
}

.writeup-body h1 { font-size: 1.5rem; margin: 1.5rem 0 0.75rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
.writeup-body h2 { font-size: 1.3rem; margin: 1.5rem 0 0.75rem; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.writeup-body h3 { font-size: 1.1rem; margin: 1.25rem 0 0.5rem; }
.writeup-body h4 { font-size: 1rem; margin: 1rem 0 0.5rem; color: var(--text-muted); }
.writeup-body h1:first-child { display: none; }

.writeup-body p {
    margin-bottom: 0.75rem;
}

.writeup-body a {
    color: var(--accent);
}

.writeup-body ul, .writeup-body ol {
    margin: 0.5rem 0 1rem 1.5rem;
}

.writeup-body li {
    margin-bottom: 0.3rem;
}

.writeup-body code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.875em;
    background: rgba(110, 118, 129, 0.2);
    padding: 0.15em 0.35em;
    border-radius: 4px;
}

.writeup-body pre {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
    overflow-x: auto;
    margin: 0.75rem 0 1rem;
}

.writeup-body pre code {
    background: none;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1.5;
}

.writeup-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0 1rem;
    font-size: 0.9rem;
}

.writeup-body th, .writeup-body td {
    border: 1px solid var(--border);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.writeup-body th {
    background: var(--bg-card);
    font-weight: 600;
}

.writeup-body blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    color: var(--text-muted);
    margin: 0.75rem 0;
}

.writeup-body strong {
    color: #fff;
}

/* Author Blurbs */
.author-blurb {
    border-left: 3px solid var(--misc);
    background: rgba(255, 166, 87, 0.06);
    border-radius: 0 6px 6px 0;
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
}

.author-blurb-header {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--misc);
    margin-bottom: 0.4rem;
}

.author-blurb-content {
    color: var(--text-muted);
}

.author-blurb-content p:last-child {
    margin-bottom: 0;
}

.writeup-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.5rem 0;
}

/* Syntax highlighting - minimal */
.codehilite .k, .codehilite .kn, .codehilite .kd { color: var(--rev); }
.codehilite .s, .codehilite .s1, .codehilite .s2, .codehilite .sd { color: var(--forensics); }
.codehilite .c, .codehilite .c1, .codehilite .cm { color: var(--text-muted); font-style: italic; }
.codehilite .n, .codehilite .nf, .codehilite .nb { color: var(--crypto); }
.codehilite .mi, .codehilite .mf, .codehilite .mh { color: var(--osint); }
.codehilite .o, .codehilite .p { color: var(--text); }

/* Solve Scripts Section */
.scripts-section {
    margin-top: 2rem;
}

.scripts-section h2 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.4rem;
}

.script-block {
    margin-bottom: 1.5rem;
}

.script-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    padding: 0.5rem 1rem;
}

.script-filename {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

.script-actions {
    display: flex;
    gap: 0.5rem;
}

.copy-btn, .download-btn {
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    transition: background 0.15s;
}

.copy-btn:hover, .download-btn:hover {
    background: rgba(88, 166, 255, 0.3);
}

.script-code {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 0 0 6px 6px;
    padding: 1rem;
    overflow-x: auto;
    margin: 0;
    max-height: 600px;
    overflow-y: auto;
}

.script-code code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    color: var(--text);
}

/* Nav */
.nav-home {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.nav-home:hover {
    color: var(--accent);
}

.nav-sep {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Home Page */
.home-header {
    margin-bottom: 2rem;
}

.home-header h1 {
    font-size: 2rem;
}

.ctf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.ctf-card-wrapper {
    display: flex;
    flex-direction: column;
}

.ctf-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: border-color 0.15s, background 0.15s;
}

.ctf-card:hover {
    border-color: var(--accent);
    background: #1f2937;
}

.ctf-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.25rem;
}

.ctf-card-ctftime {
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.ctf-card-ctftime:hover {
    border-color: var(--accent);
    color: #fff;
}

.ctf-card-name {
    font-size: 1.25rem;
    font-weight: 700;
}

.ctf-card-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.ctf-card-placement {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
}

.nav-team-link {
    margin-left: auto;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.15s;
}

.nav-team-link:hover {
    color: var(--accent);
}

@media (max-width: 640px) {
    main { padding: 1rem; }
    .writeup-body { padding: 1.25rem; }
    .challenge-grid { grid-template-columns: 1fr; }
    .ctf-grid { grid-template-columns: 1fr; }
    .index-header h1 { font-size: 1.5rem; }
    .home-header h1 { font-size: 1.5rem; }
}