/*
 * SideFrame — dark sidebar site template
 * (c) unparzd.com — https://unparzd.com
 * Licensed under the SideFrame License Agreement (see LICENSE_EN.txt / LICENSE_DE.txt).
 * You may remove or modify this notice for your own projects per the license terms.
 *
 * Edit in js/sideframe-config.js: themes, branding, routes, layout breakpoint
 * Edit in index.html: sidebar labels, panel copy, logo SVG
 * Styles below: layout, sidebar, content components — search for section headers
 */

:root {
    --sf-primary: #d4af37;
    --sf-bg-body: #0a0a0a;
    --sf-bg-nav: #0f0f0f;
    --sf-bg-submenu: #0d0d0d;
    --sf-text-main: #ffffff;
    --sf-text-muted: #a0a0a0;
    --sf-border: #333333;
    --sf-sidebar-w: 340px;
    --sf-font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --sf-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { color-scheme: dark; }

body {
    margin: 0;
    background: var(--sf-bg-body);
    color: var(--sf-text-main);
    font-family: var(--sf-font);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; }

.sf-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 1000;
    padding: 12px 16px;
    background: var(--sf-primary);
    color: #000;
    text-decoration: none;
    font-weight: 700;
}

.sf-skip:focus {
    left: 12px;
    top: 12px;
}

.sf-shell {
    display: flex;
    min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--sf-bg-body); }
::-webkit-scrollbar-thumb {
    background: var(--sf-border);
    border-radius: 3px;
    border: 1px solid var(--sf-bg-body);
}
::-webkit-scrollbar-thumb:hover { background: var(--sf-primary); }

/* Sidebar — viewport-high; footer pinned bottom; whole bar scrolls if menu grows */
.sf-sidebar {
    width: var(--sf-sidebar-w);
    background: var(--sf-bg-nav);
    border-right: 1px solid var(--sf-border);
    padding: 48px 40px 32px;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: sticky;
    top: 0;
    align-self: flex-start;
    height: 100vh;
    max-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    flex-shrink: 0;
}

.sf-sidebar::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--sf-primary), transparent);
    opacity: 0.3;
    pointer-events: none;
}

.sf-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
    flex-shrink: 0;
    text-decoration: none;
    transition: opacity 0.3s ease;
    border: none;
    background: none;
    padding: 0;
    cursor: pointer;
    color: inherit;
    text-align: left;
    font: inherit;
}

.sf-logo:hover { opacity: 1; }

.sf-logo-svg {
    width: 90px;
    height: 90px;
    color: var(--sf-primary);
    transition: transform 0.45s var(--sf-ease), filter 0.45s var(--sf-ease);
}

.sf-logo-svg.is-hover {
    transform: scale(1.06);
    filter: drop-shadow(0 0 14px color-mix(in srgb, var(--sf-primary) 55%, transparent));
}

.sf-logo-svg.is-hover.is-animated .sf-ring-outer {
    animation-duration: 3.5s;
}

.sf-logo-svg.is-hover.is-animated .sf-ring-inner {
    animation-duration: 2s;
}

.sf-logo-svg .sf-ring-outer {
    transform-origin: center;
}

.sf-logo-svg .sf-ring-inner {
    transform-origin: center;
}

.sf-logo-svg.is-animated .sf-ring-outer {
    animation: sf-rotate-cw 10s linear infinite;
}

.sf-logo-svg.is-animated .sf-ring-inner {
    animation: sf-rotate-ccw 6s linear infinite;
}

@keyframes sf-rotate-cw {
    to { transform: rotate(360deg); }
}

@keyframes sf-rotate-ccw {
    to { transform: rotate(-360deg); }
}

.sf-logo-text {
    font-size: 1.45rem;
    font-weight: 900;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-nav {
    flex: 0 1 auto;
    overflow: visible;
}

.sf-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sf-menu-group + .sf-menu-group { margin-top: 0; }

.sf-menu-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
    border: 0;
    border-top: 1px solid var(--sf-border);
    background: none;
    color: var(--sf-text-main);
    font: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color 0.3s ease;
}

.sf-menu-toggle:hover,
.sf-menu-toggle:focus-visible {
    color: var(--sf-primary);
    outline: none;
}

.sf-menu-toggle::after {
    content: "+";
    color: var(--sf-border);
    font-size: 1.1rem;
    transition: transform 0.3s var(--sf-ease);
}

.sf-menu-toggle[aria-expanded="true"]::after {
    transform: rotate(45deg);
    color: var(--sf-primary);
}

.sf-submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--sf-ease);
    background: var(--sf-bg-submenu);
}

.sf-submenu.is-open { max-height: 280px; }

.sf-submenu a {
    display: block;
    padding: 8px 0;
    color: var(--sf-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.sf-submenu a:hover,
.sf-submenu a:focus-visible,
.sf-submenu a.is-active {
    color: var(--sf-primary);
    padding-left: 10px;
    font-weight: 800;
    outline: none;
}

.sf-sidebar-footer {
    flex-shrink: 0;
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--sf-border);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sf-footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sf-footer-links a {
    color: var(--sf-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.sf-footer-links a:hover,
.sf-footer-links a:focus-visible,
.sf-footer-links a.is-active {
    color: var(--sf-primary);
    padding-left: 8px;
    outline: none;
}

.sf-theme-switcher {
    display: flex;
    gap: 8px;
}

.sf-theme-switcher[hidden] { display: none; }

.sf-theme-btn {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--sf-border);
    background: transparent;
    color: var(--sf-text-muted);
    font: inherit;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: border-color 0.25s ease, color 0.25s ease;
}

.sf-theme-btn.is-active,
.sf-theme-btn:hover,
.sf-theme-btn:focus-visible {
    border-color: var(--sf-primary);
    color: var(--sf-primary);
    outline: none;
}

/* Main content */
.sf-main {
    flex: 1;
    padding: 100px;
    max-width: 1000px;
    overflow-y: auto;
}

.sf-panel {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.sf-panel.is-active {
    display: block;
    opacity: 1;
}

.sf-panel[hidden] { display: none !important; }

.sf-panel h1 {
    margin: 0 0 30px;
    color: var(--sf-primary);
    font-size: clamp(2rem, 4vw, 2.5rem);
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.sf-panel h1::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--sf-primary);
}

.sf-panel p {
    margin: 0 0 25px;
    color: var(--sf-text-muted);
    line-height: 1.9;
    font-size: 1.05rem;
    max-width: 700px;
}

.sf-panel-lead {
    font-size: 1.2rem;
    color: var(--sf-text-main);
    line-height: 1.75;
    max-width: 720px;
}

/* ── Rich content components ─────────────────────────────────────────── */
.sf-kicker {
    display: block;
    margin: 0 0 12px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-prose {
    max-width: 720px;
}

.sf-prose p {
    margin: 0 0 22px;
    color: var(--sf-text-muted);
    line-height: 1.9;
    font-size: 1.05rem;
}

.sf-prose h2 {
    margin: 36px 0 14px;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--sf-text-main);
}

.sf-prose h2:first-child { margin-top: 0; }

.sf-prose ul,
.sf-prose ol {
    margin: 0 0 24px;
    padding-left: 1.2em;
    color: var(--sf-text-muted);
    line-height: 1.85;
}

.sf-prose li + li { margin-top: 8px; }

.sf-prose strong { color: var(--sf-text-main); font-weight: 700; }

.sf-quote {
    margin: 32px 0;
    padding: 28px 32px;
    border-left: 3px solid var(--sf-primary);
    background: color-mix(in srgb, var(--sf-bg-nav) 88%, var(--sf-primary) 12%);
    max-width: 640px;
}

.sf-quote blockquote {
    margin: 0;
    font-size: 1.25rem;
    line-height: 1.65;
    color: var(--sf-text-main);
    font-style: italic;
}

.sf-quote cite {
    display: block;
    margin-top: 14px;
    font-size: 0.82rem;
    font-style: normal;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 36px 0 40px;
    max-width: 720px;
}

.sf-stat {
    padding: 22px 18px;
    border: 1px solid var(--sf-border);
    background: var(--sf-bg-nav);
}

.sf-stat-value {
    display: block;
    font-size: 1.85rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: var(--sf-primary);
    line-height: 1.1;
}

.sf-stat-label {
    display: block;
    margin-top: 8px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sf-text-muted);
}

.sf-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin: 32px 0 36px;
    max-width: 820px;
}

.sf-card {
    padding: 24px 22px;
    border: 1px solid var(--sf-border);
    background: linear-gradient(145deg, var(--sf-bg-nav) 0%, color-mix(in srgb, var(--sf-bg-body) 70%, var(--sf-bg-nav) 30%) 100%);
}

.sf-card h3 {
    margin: 0 0 10px;
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-card p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--sf-text-muted);
    max-width: none;
}

.sf-highlight {
    margin: 28px 0;
    padding: 20px 22px;
    border: 1px solid color-mix(in srgb, var(--sf-primary) 35%, var(--sf-border));
    background: color-mix(in srgb, var(--sf-bg-nav) 92%, var(--sf-primary) 8%);
    max-width: 720px;
}

.sf-highlight p:last-child { margin-bottom: 0; }

.sf-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 24px;
}

.sf-tag {
    padding: 6px 12px;
    border: 1px solid var(--sf-border);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sf-text-muted);
}

.sf-divider {
    height: 1px;
    margin: 36px 0;
    background: linear-gradient(to right, var(--sf-primary), transparent);
    opacity: 0.35;
    max-width: 720px;
}

.sf-timeline {
    list-style: none;
    margin: 28px 0 0;
    padding: 0;
    max-width: 720px;
    border-left: 1px solid var(--sf-border);
}

.sf-timeline li {
    position: relative;
    padding: 0 0 28px 28px;
}

.sf-timeline li::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 6px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--sf-primary);
    box-shadow: 0 0 12px color-mix(in srgb, var(--sf-primary) 50%, transparent);
}

.sf-timeline h3 {
    margin: 0 0 8px;
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sf-text-main);
}

.sf-timeline p {
    margin: 0;
    max-width: none;
}

.sf-spec {
    margin: 24px 0 32px;
    max-width: 720px;
}

.sf-spec dt {
    margin: 18px 0 6px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-spec dt:first-child { margin-top: 0; }

.sf-spec dd {
    margin: 0;
    color: var(--sf-text-muted);
    line-height: 1.8;
}

.sf-legal-block {
    margin: 0 0 28px;
    padding: 22px 24px;
    border: 1px solid var(--sf-border);
    background: var(--sf-bg-nav);
    max-width: 720px;
}

.sf-legal-block h2 {
    margin: 0 0 12px;
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-legal-block p {
    margin: 0 0 10px;
    max-width: none;
}

.sf-legal-block p:last-child { margin-bottom: 0; }

.sf-contact-layout {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    max-width: 820px;
}

.sf-contact-info {
    display: grid;
    gap: 20px;
    max-width: 560px;
}

.sf-contact-block {
    padding: 24px 22px;
    border: 1px solid var(--sf-border);
    background: var(--sf-bg-nav);
}

.sf-contact-block h2 {
    margin: 0 0 10px;
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-contact-block p {
    margin: 0;
    max-width: none;
}

.sf-contact-block a {
    color: var(--sf-primary);
    text-decoration: none;
}

.sf-contact-block a:hover {
    text-decoration: underline;
}

.sf-noscript {
    margin: 0 0 24px;
    padding: 14px 16px;
    border-left: 3px solid var(--sf-primary);
    background: var(--sf-bg-nav);
    color: var(--sf-text-muted);
    font-size: 0.92rem;
}

.sf-noscript ul {
    margin: 10px 0 0;
    padding-left: 18px;
}

.sf-noscript a { color: var(--sf-primary); }

/* Legal subpages */
.sf-legal-page { background: var(--sf-bg-body); min-height: 100vh; }

.sf-legal-header {
    border-bottom: 1px solid var(--sf-border);
    background: var(--sf-bg-nav);
}

.sf-legal-header-inner {
    max-width: 920px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.sf-legal-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sf-primary);
}

.sf-legal-back {
    text-decoration: none;
    font-size: 0.88rem;
    color: var(--sf-text-muted);
}

.sf-legal-back:hover { color: var(--sf-primary); }

.sf-legal-main {
    max-width: 920px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

.sf-legal-main h1 {
    margin: 0 0 16px;
    color: var(--sf-primary);
    font-size: clamp(2rem, 4vw, 2.6rem);
}

.sf-legal-note {
    margin: 0 0 28px;
    padding: 14px 16px;
    border-left: 3px solid var(--sf-primary);
    background: var(--sf-bg-nav);
    color: var(--sf-text-muted);
}

.sf-legal-content h2 {
    margin: 28px 0 10px;
    font-size: 1.05rem;
    color: var(--sf-text-main);
}

.sf-legal-content p {
    margin: 0 0 12px;
    color: var(--sf-text-muted);
    max-width: 62ch;
}

.sf-legal-content a { color: var(--sf-primary); }

/* Embed preview (?embed=1) for homepage iframe */
html.sf-embed,
html.sf-embed body {
    overflow: hidden;
    height: 100%;
    margin: 0;
}

html.sf-embed .sf-main {
    padding: 32px 28px;
}

html.sf-embed .sf-panel:not(#home) { display: none !important; }

html.sf-embed .sf-sidebar-footer .sf-theme-switcher { display: none; }

html.sf-embed .sf-stats,
html.sf-embed .sf-grid-2,
html.sf-embed .sf-contact-layout { display: none; }

html.sf-embed .sf-sidebar {
    width: 220px;
    padding: 28px 22px;
}

html.sf-embed .sf-logo-svg { width: 56px; height: 56px; }

html.sf-embed .sf-logo-text { font-size: 0.95rem; }

html.sf-embed .sf-menu-toggle { font-size: 0.72rem; padding: 10px 0; }

html.sf-embed .sf-panel h1 { font-size: 1.35rem; margin-bottom: 16px; }

html.sf-embed .sf-panel p { font-size: 0.82rem; line-height: 1.65; margin-bottom: 12px; }

@media (max-width: 1024px) {
    :root { --sf-sidebar-w: 280px; }

    .sf-sidebar { padding: 40px 30px; }

    .sf-logo-svg { width: 70px; height: 70px; }

    .sf-logo-text { font-size: 1.2rem; }
}

@media (max-width: 768px) {
    .sf-shell { flex-direction: column; }

    .sf-sidebar {
        width: 100%;
        position: relative;
        height: auto;
        max-height: none;
        overflow: visible;
        padding: 40px;
        border-right: none;
        border-bottom: 1px solid var(--sf-border);
    }

    .sf-nav {
        overflow: visible;
        flex: none;
    }

    .sf-main { padding: 40px 28px; scroll-margin-top: 12px; }

    .sf-logo-svg { width: 60px; height: 60px; }

    .sf-logo-text { font-size: 1.1rem; }

    .sf-stats { grid-template-columns: 1fr; }

    .sf-grid-2,
    .sf-contact-layout { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    .sf-panel,
    .sf-submenu,
    .sf-menu-toggle::after {
        transition: none;
    }

    .sf-logo-svg.is-animated .sf-ring-outer,
    .sf-logo-svg.is-animated .sf-ring-inner {
        animation: none;
    }

    .sf-logo-svg.is-hover {
        transform: none;
        filter: none;
    }
}