:root {
    --bg:           #14141c;
    --bg-raised:    #1b1b25;
    --bg-card:      #20202c;
    --bg-code:      #111119;
    --border:       #2e2e40;
    --border-light: #3c3c52;

    --text:         #eeeef6;
    --text-muted:   #9898b8;
    --text-dim:     #56567a;

    --accent:       #4c6ef5;
    --accent-light: #91a7ff;

    --code-kw:      #91a7ff;
    --code-fn:      #69db7c;
    --code-str:     #ffe066;
    --code-cmt:     #60607e;
    --code-num:     #ff8787;

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body:    'DM Sans', system-ui, sans-serif;
    --font-mono:    'DM Mono', 'Fira Code', monospace;

    --radius:       5px;
    --radius-md:    10px;

    --topnav-h:     64px;
    --sidebar-w:    260px;
    --toc-w:        220px;
    --content-max:  760px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 17px; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: #fff; }
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

.topnav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topnav-h);
    z-index: 200;
    background: rgba(20, 20, 28, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.topnav__inner {
    height: 100%;
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr auto auto;
    align-items: center;
    gap: 0;
    padding: 0;
}

.topnav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 24px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text);
    border-right: 1px solid var(--border);
    height: 100%;
}

.topnav__logo-symbol { color: var(--accent-light); font-size: 1.1rem; }

.topnav__logo-tag {
    font-size: 10px;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 3px;
    letter-spacing: 0.1em;
}

.topnav__logo-name {
    font-size: 0.95rem;
}


.topnav__center {
    padding: 0 32px;
}

.topnav__search {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 36px;
    padding: 0 14px;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 360px;
    cursor: pointer;
    transition: border-color 0.15s;
}

.topnav__search:hover,
.topnav__search:focus { border-color: var(--border-light); outline: none; }

.topnav__search svg { color: var(--text-dim); flex-shrink: 0; }

.topnav__search span {
    font-size: 0.85rem;
    color: var(--text-dim);
    flex: 1;
}

.topnav__search kbd {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    border: 1px solid var(--border-light);
    border-radius: 3px;
    padding: 1px 6px;
}


.topnav__right {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0 32px;
    border-left: 1px solid var(--border);
    height: 100%;
}

.topnav__link {
    font-size: 0.87rem;
    color: var(--text-muted);
    transition: color 0.15s;
}
.topnav__link:hover { color: var(--text); }

.topnav__version {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 3px;
    letter-spacing: 0.06em;
}

.topnav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 16px;
}
.topnav__burger span {
    display: block; width: 22px; height: 1.5px;
    background: var(--text-muted);
    transition: transform 0.25s, opacity 0.25s;
}
.topnav__burger.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.topnav__burger.active span:nth-child(2) { opacity: 0; }
.topnav__burger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

.search-overlay {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(14, 14, 20, 0.85);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.search-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.search-box {
    width: 100%;
    max-width: 600px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.search-box__header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.search-box__header svg { color: var(--text-dim); flex-shrink: 0; }

.search-box__input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text);
    font-weight: 300;
}

.search-box__input::placeholder { color: var(--text-dim); }

.search-box__close {
    background: none;
    border: none;
    cursor: pointer;
}

.search-box__close kbd {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    border: 1px solid var(--border-light);
    border-radius: 3px;
    padding: 2px 7px;
    cursor: pointer;
}

.search-box__results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px 0;
}

.search-box__hint {
    padding: 20px;
    font-size: 0.87rem;
    color: var(--text-dim);
    text-align: center;
}

.search-result {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 20px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: background 0.12s;
}
.search-result:hover { background: var(--bg-raised); }
.search-result:last-child { border-bottom: none; }

.search-result__section {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-light);
    opacity: 0.7;
}

.search-result__title {
    font-size: 0.92rem;
    color: var(--text);
    font-weight: 400;
}

.search-result__excerpt {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.docs-layout {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr var(--toc-w);
    min-height: 100vh;
    padding-top: var(--topnav-h);
}


.sidebar {
    position: sticky;
    top: var(--topnav-h);
    height: calc(100vh - var(--topnav-h));
    overflow-y: auto;
    border-right: 1px solid var(--border);
    background: var(--bg-raised);
    display: flex;
    flex-direction: column;
}

.sidebar__inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 28px 0 24px;
}

.sidenav {
    flex: 1;
    overflow-y: auto;
    padding: 0 16px;
}

.sidenav__group {
    margin-bottom: 28px;
}

.sidenav__group-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 0 8px;
    margin-bottom: 8px;
}

.sidenav__link {
    display: flex;
    align-items: center;
    height: 34px;
    padding: 0 8px;
    font-size: 0.88rem;
    color: var(--text-muted);
    border-radius: var(--radius);
    transition: color 0.12s, background 0.12s;
    position: relative;
}

.sidenav__link:hover {
    color: var(--text);
    background: rgba(255,255,255,0.04);
}

.sidenav__link.active {
    color: var(--accent-light);
    background: rgba(76, 110, 245, 0.1);
}

.sidenav__link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.sidebar__footer {
    border-top: 1px solid var(--border);
    padding: 16px 24px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar__footer-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

.sidebar__footer-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-light);
    opacity: 0.6;
    flex-shrink: 0;
}


.docs-main {
    min-width: 0;
    padding: 64px 56px 120px;
}

.docs-content {
    max-width: var(--content-max);
    margin: 0 auto;
}

.doc-section {
    padding-bottom: 8px;
    scroll-margin-top: calc(var(--topnav-h) + 32px);
}

.doc-section__label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent-light);
    opacity: 0.75;
    margin-bottom: 14px;
}

.doc-section__h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 20px;
}

.doc-section__lead {
    font-size: 1.08rem;
    color: var(--text-muted);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: 36px;
    border-left: 2px solid var(--accent);
    padding-left: 18px;
}

.doc-section p {
    font-size: 0.97rem;
    color: var(--text-muted);
    line-height: 1.85;
    margin-bottom: 20px;
}

.doc-section h2 {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text);
    margin: 36px 0 14px;
    letter-spacing: 0.01em;
}

.doc-section h2:first-of-type { margin-top: 0; }

.doc-section code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--code-fn);
    background: var(--bg-code);
    padding: 2px 7px;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.doc-divider {
    height: 1px;
    background: var(--border);
    margin: 64px 0;
}

.code-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card);
    margin-bottom: 24px;
}

.code-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-raised);
}

.code-card__title {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.07em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.code-card__dots { display: flex; gap: 5px; }
.code-card__dots span {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--border-light);
}

.code-block {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--text);
    background: var(--bg-code);
    padding: 24px 28px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0;
}

.code-block code { display: block; white-space: pre; }
.code-block .kw  { color: var(--code-kw); }
.code-block .fn  { color: var(--code-fn); }
.code-block .str { color: var(--code-str); }
.code-block .cmt { color: var(--code-cmt); font-style: italic; }
.code-block .num { color: var(--code-num); }

.callout {
    display: flex;
    gap: 14px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border: 1px solid;
    margin: 24px 0;
    font-size: 0.9rem;
    line-height: 1.7;
}

.callout--info {
    background: rgba(76, 110, 245, 0.07);
    border-color: rgba(76, 110, 245, 0.25);
    color: var(--text-muted);
}

.callout--info .callout__icon { color: var(--accent-light); }

.callout--warn {
    background: rgba(255, 170, 0, 0.06);
    border-color: rgba(255, 170, 0, 0.2);
    color: var(--text-muted);
}

.callout--warn .callout__icon { color: #ffa94d; }

.callout__icon { flex-shrink: 0; padding-top: 2px; }
.callout__body strong { color: var(--text); font-weight: 500; }
.callout__body code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--code-fn);
    background: var(--bg-code);
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
}

.principles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: 28px;
}

.principle {
    background: var(--bg-card);
    padding: 28px 28px;
}

.principle__num {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.14em;
    margin-bottom: 12px;
}

.principle h3 {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 10px;
}

.principle p {
    font-size: 0.86rem;
    color: var(--text-muted);
    line-height: 1.75;
    margin: 0;
}

.requirements-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 28px;
}

.req-row {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 0;
    border-bottom: 1px solid var(--border);
}
.req-row:last-child { border-bottom: none; }

.req-row span {
    padding: 12px 20px;
    font-size: 0.88rem;
    color: var(--text-muted);
    border-right: 1px solid var(--border);
}
.req-row span:last-child { border-right: none; }

.req-row--header { background: var(--bg-raised); }
.req-row--header span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
}


.method-list {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 24px;
}

.method-item {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
}
.method-item:last-child { border-bottom: none; }

.method-item__sig {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--code-fn);
    background: var(--bg-code);
    border: 1px solid var(--border);
    padding: 3px 10px;
    border-radius: var(--radius);
    margin-bottom: 8px;
}

.method-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

.method-item p code {
    font-family: var(--font-mono);
    font-size: 0.79rem;
    color: var(--code-fn);
    background: var(--bg-code);
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
}

.inline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.method-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: var(--radius);
}

.method-tag--get    { background: rgba(105, 219, 124, 0.12); color: #69db7c; border: 1px solid rgba(105,219,124,0.25); }
.method-tag--post   { background: rgba(145, 167, 255, 0.12); color: #91a7ff; border: 1px solid rgba(145,167,255,0.25); }
.method-tag--put    { background: rgba(255, 224, 102, 0.12); color: #ffe066; border: 1px solid rgba(255,224,102,0.25); }
.method-tag--delete { background: rgba(255, 135, 135, 0.12); color: #ff8787; border: 1px solid rgba(255,135,135,0.25); }
.method-tag--patch  { background: rgba(255, 169, 77,  0.12); color: #ffa94d; border: 1px solid rgba(255,169,77, 0.25); }

.steps-list {
    display: flex;
    flex-direction: column;
}

.step-item {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 20px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
}
.step-item:first-child { border-top: 1px solid var(--border); }

.step-item__num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.12em;
    padding-top: 4px;
}

.step-item__body h3 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 14px;
}

.step-item__body p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.75;
    margin: 0;
}

.step-item__body code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--code-fn);
    background: var(--bg-code);
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
}

.security-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: 28px;
}

.security-item {
    background: var(--bg-card);
    padding: 28px 28px;
}

.security-item__icon {
    color: var(--accent-light);
    opacity: 0.8;
    margin-bottom: 14px;
}

.security-item h3 {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 10px;
}

.security-item p {
    font-size: 0.86rem;
    color: var(--text-muted);
    line-height: 1.75;
    margin: 0;
}


.cli-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 24px;
}

.cli-row {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    border-bottom: 1px solid var(--border);
}
.cli-row:last-child { border-bottom: none; }

.cli-row--header { background: var(--bg-raised); }

.cli-row--header span {
    padding: 10px 18px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    border-right: 1px solid var(--border);
}
.cli-row--header span:last-child { border-right: none; }

.cli-row code {
    display: block;
    padding: 13px 18px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--code-fn);
    border-right: 1px solid var(--border);
}

.cli-row span {
    display: block;
    padding: 13px 18px;
    font-size: 0.87rem;
    color: var(--text-muted);
}

.cli-row span code {
    font-family: var(--font-mono);
    font-size: 0.79rem;
    color: var(--code-fn);
    background: var(--bg-code);
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid var(--border);
    display: inline;
}

.doc-bottomnav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 80px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    gap: 16px;
    flex-wrap: wrap;
}

.doc-bottomnav__btn {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 18px;
    font-size: 0.88rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: color 0.15s, border-color 0.15s;
}
.doc-bottomnav__btn:hover { color: var(--text); border-color: var(--border-light); }
.doc-bottomnav__btn--home { color: var(--accent-light); border-color: rgba(76,110,245,0.3); }
.doc-bottomnav__btn--home:hover { border-color: var(--accent-light); }

.toc-panel {
    position: sticky;
    top: var(--topnav-h);
    height: calc(100vh - var(--topnav-h));
    overflow-y: auto;
    border-left: 1px solid var(--border);
    padding: 36px 0 24px;
}

.toc-panel__inner {
    padding: 0 24px;
}

.toc-panel__label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.toc-nav {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.toc-nav a {
    display: block;
    font-size: 0.82rem;
    color: var(--text-dim);
    padding: 5px 0;
    border-left: 1px solid var(--border);
    padding-left: 12px;
    transition: color 0.15s, border-color 0.15s;
    line-height: 1.4;
}

.toc-nav a:hover { color: var(--text-muted); }

.toc-nav a.toc-active {
    color: var(--accent-light);
    border-color: var(--accent);
}



@media (max-width: 1300px) {
    .docs-layout { grid-template-columns: var(--sidebar-w) 1fr; }
    .toc-panel { display: none; }
}

@media (max-width: 1100px) {
    .topnav__inner { grid-template-columns: var(--sidebar-w) 1fr auto; }
    .topnav__right { display: none; }
    :root { --sidebar-w: 240px; }
}

@media (max-width: 900px) {
    :root { --sidebar-w: 0px; }

    .docs-layout { grid-template-columns: 1fr; }

    .topnav__inner { grid-template-columns: 1fr auto auto; }
    .topnav__burger { display: flex; }

    .sidebar {
        position: fixed;
        top: var(--topnav-h);
        left: 0;
        bottom: 0;
        width: 280px;
        z-index: 150;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        border-right: 1px solid var(--border-light);
    }

    .sidebar.open { transform: translateX(0); }

    .docs-main { padding: 48px 28px 80px; }
}


@media (max-width: 600px) {
    html { font-size: 15px; }

    .topnav__center { display: none; }
    .topnav__inner { grid-template-columns: 1fr auto; }

    .docs-main { padding: 36px 20px 64px; }

    .principles-grid,
    .security-grid { grid-template-columns: 1fr; }

    .req-row {
        grid-template-columns: 1fr 1fr;
    }
    .req-row span:nth-child(3) { display: none; }
    .req-row--header span:nth-child(3) { display: none; }

    .doc-bottomnav { flex-direction: column; align-items: flex-start; }
}