@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700;800&display=swap');

:root {
    --color-bg: #f4f6f8;
    --color-blue: #1a3a4a;
    --color-red: #b82525;
    --color-text: #1a1a1a;
    --color-subtext: #555;
    --card-bg: #ffffff;
    --card-border: #e3e7eb;
}

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

body {
    background-color: var(--color-bg);
    font-family: 'JetBrains Mono', monospace;
    min-height: 100vh;
    width: 100vw;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    color: var(--color-text);
}

body.page main,
body.page nav,
body.page footer,
body.page .coming-hero {
    opacity: 0;
    transform: scale(0.98);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

body.page.is-ready main,
body.page.is-ready nav,
body.page.is-ready footer,
body.page.is-ready .coming-hero {
    opacity: 1;
    transform: scale(1);
}

body.page.is-leaving main,
body.page.is-leaving nav,
body.page.is-leaving footer,
body.page.is-leaving .coming-hero {
    opacity: 0;
    transform: scale(0.98);
}

/* --- Background Geometry (Triangles) --- */
.corner {
    position: absolute;
    width: 10vw;
    height: 10vw;
    z-index: 2;
    opacity: 0;
}

.corner-tl {
    top: 0;
    left: 0;
    background-color: var(--color-blue);
    clip-path: polygon(0 0, 100% 0, 0 100%);
    animation: cornerInTL 1.1s ease-out forwards;
}

.corner-tr {
    top: 0;
    right: 0;
    background-color: var(--color-red);
    clip-path: polygon(0 0, 100% 0, 100% 100%);
    animation: cornerInTR 1.1s ease-out forwards;
}

.corner-bl {
    bottom: 0;
    left: 0;
    background-color: var(--color-red);
    clip-path: polygon(0 100%, 0 0, 100% 100%);
    animation: cornerInBL 1.1s ease-out forwards;
}

.corner-br {
    bottom: 0;
    right: 0;
    background-color: var(--color-blue);
    clip-path: polygon(100% 0, 100% 100%, 0 100%);
    animation: cornerInBR 1.1s ease-out forwards;
}

@keyframes cornerInTL {
    from { transform: translate(-18%, -18%); opacity: 0; }
    to { transform: translate(0, 0); opacity: 1; }
}
@keyframes cornerInTR {
    from { transform: translate(18%, -18%); opacity: 0; }
    to { transform: translate(0, 0); opacity: 1; }
}
@keyframes cornerInBL {
    from { transform: translate(-18%, 18%); opacity: 0; }
    to { transform: translate(0, 0); opacity: 1; }
}
@keyframes cornerInBR {
    from { transform: translate(18%, 18%); opacity: 0; }
    to { transform: translate(0, 0); opacity: 1; }
}

@keyframes cornerOutTL {
    from { transform: translate(0, 0); opacity: 1; }
    to { transform: translate(-18%, -18%); opacity: 0; }
}
@keyframes cornerOutTR {
    from { transform: translate(0, 0); opacity: 1; }
    to { transform: translate(18%, -18%); opacity: 0; }
}
@keyframes cornerOutBL {
    from { transform: translate(0, 0); opacity: 1; }
    to { transform: translate(-18%, 18%); opacity: 0; }
}
@keyframes cornerOutBR {
    from { transform: translate(0, 0); opacity: 1; }
    to { transform: translate(18%, 18%); opacity: 0; }
}

body.page.is-leaving .corner-tl { animation: cornerOutTL 0.65s ease-in forwards; }
body.page.is-leaving .corner-tr { animation: cornerOutTR 0.65s ease-in forwards; }
body.page.is-leaving .corner-bl { animation: cornerOutBL 0.65s ease-in forwards; }
body.page.is-leaving .corner-br { animation: cornerOutBR 0.65s ease-in forwards; }

@media (prefers-reduced-motion: reduce) {
    body.page main,
    body.page nav,
    body.page footer,
    body.page .coming-hero {
        transition: none;
    }

    .corner,
    body.page.is-leaving .corner-tl,
    body.page.is-leaving .corner-tr,
    body.page.is-leaving .corner-bl,
    body.page.is-leaving .corner-br {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* --- Binary Background Pattern --- */
.binary-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    pointer-events: none;
    opacity: 0.05;
    user-select: none;
}

.binary-bg span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 800;
    color: #8899a6;
    line-height: 1;
    white-space: pre-wrap;
    word-break: break-all;
    text-align: center;
}

/* --- Layout --- */
main {
    z-index: 10;
    width: 100%;
    max-width: 1100px;
    padding: 40px 20px 80px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

nav a {
    text-decoration: none;
    color: var(--color-subtext);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s, transform 0.3s;
    display: inline-block;
}

nav a:hover {
    color: var(--color-blue);
    transform: translateY(-2px);
}

nav a::before { content: "[ "; color: #bbb; }
nav a::after { content: " ]"; color: #bbb; }

.coming-hero {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.coming-hero[hidden] {
    display: none;
}

.coming-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 28px 28px;
    box-shadow: 0 14px 24px rgba(0, 0, 0, 0.06);
    max-width: 560px;
    text-align: center;
}

.coming-eyebrow {
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-subtext);
    margin-bottom: 10px;
}

.coming-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-blue);
    margin-bottom: 12px;
}

.coming-text {
    font-size: 0.9rem;
    color: #2a2a2a;
    line-height: 1.6;
    margin-bottom: 18px;
}

.coming-badges {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid #d9e0e6;
    color: #3a4a56;
    background: #f7f9fb;
}

.writeups-section {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-width: 940px;
    margin-left: auto;
    margin-right: auto;
}

.writeups-header {
    text-align: center;
}

.writeups-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-blue);
    margin-bottom: 6px;
}

.writeups-subtitle {
    font-size: 0.8rem;
    color: var(--color-subtext);
    letter-spacing: 0.5px;
}

.writeups-search {
    display: flex;
    justify-content: flex-end;
    margin-top: -8px;
}

.writeups-search-input {
    width: 190px;
    border: 1px solid #d9e0e6;
    border-radius: 8px;
    background: #f7f9fb;
    color: var(--color-text);
    padding: 6px 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.writeups-search-input::placeholder {
    color: #7a8a9a;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.writeups-search-input:focus {
    border-color: rgba(26, 58, 74, 0.55);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(26, 58, 74, 0.08);
}

.writeups-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: -2px;
}

.writeups-filter[hidden] {
    display: none;
}

.writeups-filter-btn {
    border: 1px solid #d9e0e6;
    background: #f7f9fb;
    color: var(--color-subtext);
    padding: 5px 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}

.writeups-filter-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(26, 58, 74, 0.45);
    color: var(--color-blue);
}

.writeups-filter-btn.active {
    color: var(--color-blue);
    border-color: var(--color-blue);
    background: #eaf1f6;
}

.writeups-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.writeups-pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.writeups-pagination[hidden] {
    display: none;
}

.writeups-page-btn {
    min-width: 34px;
    border: 1px solid #d9e0e6;
    background: #f7f9fb;
    color: var(--color-subtext);
    padding: 5px 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}

.writeups-page-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    border-color: rgba(26, 58, 74, 0.45);
    color: var(--color-blue);
}

.writeups-page-btn.active {
    color: var(--color-blue);
    border-color: var(--color-blue);
    background: #eaf1f6;
}

.writeups-page-btn:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.writeup-card {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 18px;
    align-items: center;
    padding: 18px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: 0 18px 32px rgba(17, 24, 39, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.writeup-card:hover {
    transform: translateY(-2px);
    border-color: rgba(26, 58, 74, 0.35);
    box-shadow: 0 22px 38px rgba(17, 24, 39, 0.12);
}

.writeup-card[hidden] {
    display: none;
}

.writeup-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
}

.writeup-thumb-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    background: linear-gradient(135deg, #eef2f6, #f8fafc);
    border: 1px solid #e2e8ee;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.writeup-thumb-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 1;
}

.writeup-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    justify-content: center;
    min-width: 0;
}

.writeup-kicker {
    font-size: 0.7rem;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    color: #6b7a86;
}

.writeup-name {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-blue);
    display: -webkit-box;
    line-height: 1.35;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.writeup-desc {
    font-size: 0.82rem;
    color: #3b4a55;
    line-height: 1.5;
    display: -webkit-box;
    max-width: 75ch;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
}

.writeup-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    align-items: center;
    font-size: 0.75rem;
    color: #6b7a86;
}

.writeup-author-btn {
    border: 0;
    padding: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    cursor: pointer;
    border-bottom: 1px dotted rgba(26, 58, 74, 0.35);
}

.writeup-author-btn:hover {
    color: var(--color-blue);
    border-bottom-color: var(--color-blue);
}

.writeup-tags[hidden] {
    display: none;
}

.writeup-tag-pill {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 4px 8px;
    border: 1px solid #d9e0e6;
    border-radius: 999px;
    margin-right: 6px;
    margin-bottom: 1px;
    color: #3a4a56;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.writeup-tag-pill:hover,
.writeup-tag-pill:focus {
    color: var(--color-blue);
    border-color: var(--color-blue);
    background: #eaf1f6;
    outline: none;
}

.writeup-cta {
    margin-top: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: flex-start;
    padding: 5px 10px;
    border-radius: 8px;
    border: 1px solid rgba(26, 58, 74, 0.35);
    color: var(--color-blue);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    background: #f5f8fb;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.writeup-card:hover .writeup-cta {
    background: #eaf1f6;
    border-color: var(--color-blue);
}

footer {
    position: absolute;
    bottom: 1.5rem;
    z-index: 10;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: none;
    color: #777;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

@media (max-width: 600px) {
    .corner { width: 12.5vw; height: 12.5vw; }
    .coming-title { font-size: 1.6rem; }
    footer { left: 1.5rem; right: 1.5rem; }
    #copyright { white-space: pre-line; }
    .writeup-card {
        grid-template-columns: 1fr;
    }
    .writeups-search {
        justify-content: center;
        margin-top: 0;
    }
    .writeups-search-input {
        width: 100%;
    }
}