/* Palette and type follow 0j.fi (0J Consulting Oy) */
:root {
    --bg:      #000000;
    --grey:    #7a8d8b;
    --magenta: #ee02a5;
    --green:   #4bc500;
    --cyan:    #009aae;
    --ink:     #d7e0de;
    --line:    rgba(122, 141, 139, 0.35);
    --stripe:  linear-gradient(90deg,
                 var(--magenta) 0 25%,
                 var(--green)   25% 50%,
                 var(--cyan)    50% 75%,
                 var(--grey)    75% 100%);
    --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
            Arial, sans-serif;
    /* Smooth magenta-green-cyan glow used for accent edges and hover bars */
    --glow:    linear-gradient(180deg, var(--magenta), var(--green), var(--cyan));
    --glow-x:  linear-gradient(90deg, var(--magenta), var(--green), var(--cyan));
    --page: 1060px;  /* one page width for every page, header and footer */
    --measure: 85ch; /* reading line length for blog post bodies */
    --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "Fira Code",
            Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

/* Minimal reset (replaces Bootstrap's reboot) */
*,
*::before,
*::after {
    box-sizing: border-box;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, pre, table, blockquote, figure {
    margin: 0 0 1.1em;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 600;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

blockquote {
    position: relative;
    padding-left: 1.25rem;
    color: var(--grey);
}

blockquote::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--glow);
}

hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 2rem 0;
}

/* Monospace for headings and UI chrome; sans for running text */
h1, h2, h3, h4, h5, h6,
.nav-links, .meta, .chip, .post-date, .back-link,
.data-table, .content table, code, pre, kbd,
.footer .legal, .hamburger {
    font-family: var(--mono);
}

/* Layout */
.wrap {
    width: 100%;
    max-width: calc(var(--page) + 40px);
    margin: 0 auto;
    padding: 0 20px;
}

.page-head {
    margin-bottom: 2.5rem;
}

.page-head h1 {
    margin-bottom: 0.5em;
}

.lede {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: var(--ink);
}

/* Reading column for long-form text */
/* Blog posts keep a reading line length, on the shared left edge;
   all other pages use the full page width */
.post .post-head,
.post .prose {
    max-width: var(--measure);
}

.prose h3 {
    margin-top: 2rem;
    font-size: 1.15rem;
}

.prose li + li {
    margin-top: 0.25rem;
}

.lede p:last-child,
.page-head .lede:last-child {
    margin-bottom: 0;
}

.meta {
    margin: 0 0 0.25rem;
    font-size: 0.8rem;
    color: var(--grey);
}

/* Global Styles */

/* Always reserve the scrollbar's space so the layout (and the menu)
   doesn't shift sideways between short and long pages */
html {
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    font-family: var(--sans);
    font-size: 1.0625rem;
    background-color: var(--bg);
    color: var(--ink);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    overflow-x: hidden;
}

/* Header and Navigation: sticky, translucent, plain links */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.72);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

/* 0j glitch stripe along the top edge */
.site-header::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--stripe);
}

.menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    max-width: calc(var(--page) + 40px);
    height: 64px;
    margin: 0 auto;
    padding: 0 20px;
}

.menu .logo {
    position: relative;
    display: inline-block;
    border-bottom: 0;
    line-height: 0;
}

.menu .logo img {
    height: 34px;
    width: auto;
}

/* Glitch on hover: magenta and green copies of the logo (tinted via mask)
   flicker in offset slices while the logo itself jitters */
.menu .logo::before,
.menu .logo::after {
    content: "";
    position: absolute;
    inset: 0;
    -webkit-mask: url("../images/logo.png") center / contain no-repeat;
    mask: url("../images/logo.png") center / contain no-repeat;
    opacity: 0;
    pointer-events: none;
}

.menu .logo::before {
    background: var(--magenta);
}

.menu .logo::after {
    background: var(--green);
}

.menu .logo:hover::before,
.menu .logo:focus-visible::before {
    opacity: 0.9;
    animation: logo-glitch-a 0.8s steps(1) infinite;
}

.menu .logo:hover::after,
.menu .logo:focus-visible::after {
    opacity: 0.9;
    animation: logo-glitch-b 0.8s steps(1) infinite;
}

.menu .logo:hover img,
.menu .logo:focus-visible img {
    animation: logo-jitter 0.8s steps(1) infinite;
}

@keyframes logo-glitch-a {
    0%   { clip-path: inset(10% 0 60% 0); transform: translate(-3px, 0); }
    20%  { clip-path: inset(55% 0 20% 0); transform: translate(3px, 0); }
    40%  { clip-path: inset(0 0 85% 0);   transform: translate(-2px, 0); }
    60%  { clip-path: inset(70% 0 5% 0);  transform: translate(2px, 0); }
    80%  { clip-path: inset(30% 0 45% 0); transform: translate(-4px, 0); }
    100% { clip-path: inset(10% 0 60% 0); transform: translate(-3px, 0); }
}

@keyframes logo-glitch-b {
    0%   { clip-path: inset(65% 0 10% 0); transform: translate(3px, 0); }
    20%  { clip-path: inset(5% 0 75% 0);  transform: translate(-3px, 0); }
    40%  { clip-path: inset(40% 0 35% 0); transform: translate(4px, 0); }
    60%  { clip-path: inset(15% 0 70% 0); transform: translate(-2px, 0); }
    80%  { clip-path: inset(80% 0 0 0);   transform: translate(2px, 0); }
    100% { clip-path: inset(65% 0 10% 0); transform: translate(3px, 0); }
}

@keyframes logo-jitter {
    0%, 100% { transform: none; }
    20%      { transform: translate(1px, 0); }
    40%      { transform: translate(-1px, 1px); }
    60%      { transform: none; }
    80%      { transform: translate(1px, -1px); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
}

.nav-links a {
    position: relative;
    font-weight: normal;
    padding: 0.5rem 0.75rem;
    color: var(--grey);
    border-bottom: 0;
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

/* Underline that grows in on hover and marks the current section */
.nav-links a::after {
    content: "";
    position: absolute;
    left: 0.75rem; right: 0.75rem; bottom: 0.15rem;
    height: 2px;
    background: var(--magenta);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.nav-links a:hover {
    color: var(--ink);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: scaleX(1);
}

.nav-links a.active {
    color: var(--ink);
}

.nav-links a.active::after {
    background: var(--green);
}

/* Sister site and RSS sit together at the right end of the menu */
.nav-links .sister-link {
    margin-left: auto;
}

.nav-links .rss-link {
    color: var(--grey);
    font-size: 0.95rem;
}

.nav-links .rss-link::after {
    display: none;
}

.nav-links .rss-link:hover {
    color: var(--cyan);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    margin-left: auto;
    padding: 0 9px;
    background: transparent;
    border: 1px solid var(--line);
    cursor: pointer;
}

.hamburger span {
    display: block;
    height: 2px;
    background: var(--ink);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
}

/* Responsive Menu */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem 20px 1rem;
        background-color: var(--bg);
        border-bottom: 1px solid var(--line);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 0.85rem 0;
        font-size: 0.85rem;
    }

    .nav-links a::after {
        left: 0; right: auto; width: 2rem;
    }

    .nav-links .sister-link {
        margin-left: 0;
    }
}

/* Main Content */
main {
    flex: 1;
    padding-top: 4rem;
    color: var(--ink);
}

h1 {
    font-size: clamp(1.9rem, 4vw, 2.75rem);
    letter-spacing: -0.01em;
    color: var(--ink);
    text-shadow: 1px 0 var(--magenta), -1px 0 var(--green);
}

/* One h2 style everywhere: ink text with a cyan '#' marker */
h2 {
    margin-top: 2.5rem;
    color: var(--ink);
    font-size: 1.4rem;
}

h2::before {
    content: "# ";
    color: var(--cyan);
}

h3, h4, h5, h6 {
    color: var(--cyan);
}

/* Quiet links: bold ink, no underline, cyan on hover (footer keeps 0j green) */
a {
    color: var(--ink);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 0;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--cyan);
    text-decoration: none;
}

/* Tables (provider list on the front page and tables inside posts) */
.data-table,
.content table {
    width: 100%;
    border-collapse: collapse;
    color: var(--ink);
    background-color: transparent;
    border: 1px solid var(--line);
}

.data-table th,
.data-table td,
.content table th,
.content table td {
    border: 0;
    border-top: 1px dotted rgba(122, 141, 139, 0.3);
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

.data-table thead th,
.content table th {
    background-color: transparent;
    color: var(--cyan);
    border-bottom: 1px solid var(--line);
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.data-table tbody tr:nth-of-type(odd),
.content table tr:nth-child(even) {
    background-color: rgba(122, 141, 139, 0.06);
}

/* Glow bar on the left of a hovered table row */
.data-table td:first-child {
    position: relative;
}

.data-table td:first-child::before {
    content: "";
    position: absolute;
    left: -1px; top: 0; bottom: 0;
    width: 2px;
    background: var(--glow);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.data-table tbody tr:hover td:first-child::before {
    opacity: 1;
}

.data-table tbody tr:hover {
    background-color: rgba(0, 154, 174, 0.08);
}

.no-wrap {
    white-space: nowrap;
}

/* Placeholder cell, e.g. "—" for a provider that was never modified */
.data-table td.muted {
    color: var(--grey);
}

/* Tables inside posts scroll sideways instead of overflowing the page */
.content table {
    display: block;
    width: max-content;
    max-width: 100%;
    overflow-x: auto;
}

/* Provider table: rows become stacked blocks on phones */
@media (max-width: 600px) {
    .providers thead {
        display: none;
    }

    .providers,
    .providers tbody,
    .providers tr,
    .providers td {
        display: block;
    }

    .providers tr {
        padding: 0.75rem 0.25rem;
        border-top: 1px dotted rgba(122, 141, 139, 0.3);
    }

    .providers td {
        border: 0;
        padding: 0.1rem 0.5rem;
    }

    .providers td[data-label]::before {
        content: attr(data-label) ": ";
        color: var(--grey);
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.1em;
    }
}

/* Footer: ownership by 0J Consulting Oy, laid out like the 0j.fi footer */
footer.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
    padding: 2.5rem 20px 2rem;
    margin-top: 3rem;
    border-top: 1px solid var(--line);
    flex-shrink: 0;
}

.footer a {
    color: var(--green);
    font-weight: normal;
    border-bottom: 1px solid rgba(75, 197, 0, 0.4);
}

.footer a:hover {
    color: var(--magenta);
    border-bottom-color: var(--magenta);
}

.footer .mark-link {
    border-bottom: 0;
    line-height: 0;
}

.footer .footer-mark {
    width: clamp(72px, 14vw, 110px);
    height: auto;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer .mark-link:hover .footer-mark {
    opacity: 1;
}

.footer .legal {
    margin: 0;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    color: var(--grey);
}

/* Cards: 0j-style boxes with the glitch stripe on top */
.card,
.post-meta {
    position: relative;
    color: var(--ink);
    background: linear-gradient(180deg, rgba(122, 141, 139, 0.05), rgba(0, 0, 0, 0));
    border: 1px solid var(--line);
    border-radius: 0;
    box-shadow: none;
}

.card::before,
.post-meta::before {
    content: "";
    position: absolute;
    top: -1px; left: -1px; right: -1px;
    height: 3px;
    background: var(--stripe);
    z-index: 1;
}

.card::after {
    content: "";
    position: absolute;
    left: -1px; top: 2px; bottom: -1px;
    width: 2px;
    background: var(--glow);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.card:hover::after {
    opacity: 1;
}

.card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    margin-bottom: 1rem;
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
}

.card-body {
    padding: 1.25rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .card {
        grid-template-columns: 1fr;
    }
}

.section-title-past::before {
    color: var(--grey);
}

.card-title,
.card-title a {
    color: var(--ink);
    border-bottom: 0;
}

.card-title a:hover {
    color: var(--cyan);
}

/* Authors */
.author-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.author-grid .author-card {
    grid-template-columns: auto 1fr;
    align-items: center;
    padding-left: 1.25rem;
}

/* Author page: profile header in the same column as everything else */
.profile-head {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.profile-head h1 {
    margin-bottom: 0.25rem;
}

.profile-head .social-icons {
    display: flex;
    gap: 0.9rem;
    margin-top: 0.5rem;
    font-size: 1.1rem;
}

@media (max-width: 480px) {
    .profile-head {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Author Card */
.author-card .author-name {
    font-size: 1.75rem;
    font-weight: bold;
}

/* Gradient underline instead of the plain link border */
.author-card .author-name .name-link {
    color: var(--ink);
    text-shadow: 1px 0 var(--magenta), -1px 0 var(--green);
    border-bottom: 0;
    padding-bottom: 3px;
    background: var(--glow-x) left bottom / 100% 2px no-repeat;
}

.author-card .author-name .name-link:hover {
    color: var(--cyan);
}

.author-card .social-icons {
    margin-top: 2rem;
}

.social-icons a {
    border-bottom: 0;
}

.author-card .social-icons a {
    font-size: 1.5rem; /* Increase icon size */
    margin-right: 10px; /* Space between icons */
}

/* Blog list: compact rows */
.post-list {
    border-top: 1px solid var(--line);
}

.post-row {
    position: relative;
    display: grid;
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1.5rem;
    padding: 1.5rem 0.75rem;
    border-bottom: 1px solid var(--line);
    transition: background-color 0.2s ease;
}

.post-row::before {
    content: "";
    position: absolute;
    left: 0; top: -1px; bottom: -1px;
    width: 2px;
    background: var(--glow);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.post-row:hover {
    background-color: rgba(122, 141, 139, 0.05);
}

.post-row:hover::before {
    opacity: 1;
}

.post-date {
    padding-top: 0.2rem;
    font-size: 0.8rem;
    color: var(--grey);
}

.post-title {
    margin: 0 0 0.4rem;
    font-size: 1.2rem;
}

.post-title::before {
    content: none;
}

/* Whole row is clickable through the title link */
.post-title a {
    color: var(--ink);
    border-bottom: 0;
}

.post-title a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.post-row:hover .post-title a {
    color: var(--cyan);
}

.post-summary {
    margin-bottom: 0.5rem;
    color: var(--grey);
}

.chip {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0 0.5rem;
    border: 1px solid var(--line);
    font-size: 0.7rem;
    color: var(--grey);
}

a.chip {
    font-weight: normal;
    border-bottom: 1px solid var(--line);
}

a.chip:hover {
    border-color: var(--cyan);
}

@media (max-width: 600px) {
    .post-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}

/* Training list */
.training-card {
    grid-template-columns: 160px minmax(0, 1fr);
}

/* Courses without a provider image (e.g. imported Elisa SANS sessions) */
.training-card.no-image {
    grid-template-columns: 1fr;
}

.training-card .card-img {
    aspect-ratio: 1;
    height: auto;
}

.section-title-past {
    color: var(--grey);
}

.empty {
    color: var(--grey);
}

.past-training td {
    color: var(--grey);
}

.past-training td:first-child {
    font-size: 0.85rem;
}

@media (max-width: 600px) {
    .training-card {
        grid-template-columns: 1fr;
    }

    .training-card .card-img {
        aspect-ratio: auto;
        max-height: 160px;
        object-fit: contain;
    }

    .past-training thead {
        display: none;
    }

    .past-training,
    .past-training tbody,
    .past-training tr,
    .past-training td {
        display: block;
    }

    .past-training tr {
        padding: 0.75rem 0.25rem;
        border-top: 1px dotted rgba(122, 141, 139, 0.3);
    }

    .past-training td {
        border: 0;
        padding: 0.1rem 0.5rem;
    }

    .past-training td[data-label]::before {
        content: attr(data-label) ": ";
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.1em;
    }
}

/* Blog content */

.back-link {
    display: inline-block;
    font-weight: normal;
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
    color: var(--grey);
    border-bottom: 0;
}

/* Post metadata box: author, date, reading time and tags */
.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 2.5rem;
    margin: 1.75rem 0 0;
    padding: 1.1rem 1.25rem;
}

.post-meta dt {
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: normal;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--cyan);
}

.post-meta dd {
    margin: 0.15rem 0 0;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--ink);
}

.post-meta-author {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.post-meta .author-avatar {
    width: 48px;
    height: 48px;
}

.post-meta .chip {
    margin: 0 0.4rem 0 0;
}

.subtitle {
    font-size: 1.15rem;
    font-weight: normal;
    color: var(--grey);
    letter-spacing: normal;
    text-transform: none;
}

.content img {
    display: block;
    margin: 1.5rem auto;
    max-width: 100%;
    height: auto;
    max-height: 600px;
    width: auto;
    border: 1px solid var(--line);
}

.twitter-tweet {
    margin-left: auto !important;
    margin-right: auto !important;
    max-width: 100%;
}   

pre {
    /* glow edge on the left, faint panel behind */
    background: var(--glow) left / 2px 100% no-repeat, rgba(122, 141, 139, 0.06);
    border: 1px solid var(--line);
    border-left: 0;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.6;
}

code {
    font-size: 0.9em;
}

pre code {
    color: var(--ink);
}

code {
    color: var(--green);
}

/* Sister-site transition: a full-screen overlay of glitch bands.
   html.leaving  - set on click, covers the page before navigating away
   html.arriving - set on load when coming from the sister site, reveals it */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 3000;
    pointer-events: none;
    opacity: 0;
    background:
        repeating-linear-gradient(180deg,
            var(--magenta) 0 3px, transparent 3px 46px,
            var(--green) 46px 48px, transparent 48px 97px,
            var(--cyan) 97px 100px, transparent 100px 150px),
        #000;
}

html.leaving body::after {
    animation: sister-out 0.32s steps(1) forwards;
}

html.arriving body::after {
    opacity: 1;
    animation: sister-in 0.36s steps(1) forwards;
}

html.leaving .site-header,
html.leaving main {
    animation: logo-jitter 0.32s steps(1) infinite;
}

@keyframes sister-out {
    0%   { opacity: 1; clip-path: inset(30% 0 60% 0); transform: translateX(-12px); }
    20%  { opacity: 1; clip-path: inset(60% 0 22% 0); transform: translateX(10px); }
    40%  { opacity: 1; clip-path: inset(8% 0 55% 0);  transform: translateX(-6px); }
    60%  { opacity: 1; clip-path: inset(0 0 25% 0);   transform: none; }
    80%  { opacity: 1; clip-path: inset(0); }
    100% { opacity: 1; clip-path: inset(0); background: #000; }
}

@keyframes sister-in {
    0%   { opacity: 1; clip-path: inset(0); background: #000; }
    25%  { opacity: 1; clip-path: inset(0 0 30% 0); }
    50%  { opacity: 1; clip-path: inset(10% 0 50% 0); transform: translateX(8px); }
    75%  { opacity: 1; clip-path: inset(62% 0 25% 0); transform: translateX(-10px); }
    100% { opacity: 0; clip-path: inset(0); transform: none; }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }

    /* Never leave the transition overlay covering the page */
    html.arriving body::after {
        opacity: 0;
    }
}