/* Orga Consult – Projekte Portfolio */

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

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:root {
    --color-primary: rgb(59, 130, 246);
    --color-primary-light: rgb(96, 165, 250);
    --color-white: rgb(255, 255, 255);
    --color-white-50: rgba(255, 255, 255, 0.5);
    --color-white-70: rgba(255, 255, 255, 0.7);
    --color-black: rgb(0, 0, 0);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-background-light: rgba(255, 255, 255, 0.04);
    --color-background-dark: rgb(9, 9, 11);
    --color-surface: rgba(255, 255, 255, 0.03);
    --header-height: 70px;
    --font-display: "Playfair Display", Georgia, serif;
    --font-body: "Geist", system-ui, sans-serif;
    --site-max: 1100px;
}

html, body {
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6, p, figure, ul, ol {
    margin: 0;
}

body {
    background: var(--color-background-dark);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    padding-top: var(--header-height);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: 100%;
    max-width: var(--site-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========== Header ========== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(9, 9, 11, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-container {
    max-width: var(--site-max);
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo a {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-white);
}

.logo span {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--color-white-50);
}

.main-nav .nav-links {
    display: flex;
    list-style: none;
    gap: 1.75rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--color-white);
    transition: color 0.25s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--color-primary);
}

.nav-external {
    color: var(--color-white-50) !important;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--color-white);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    min-height: 48px;
    border-radius: 800px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-background-light);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ========== Hero ========== */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    padding: 4rem 0 5rem;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 20%, rgba(59, 130, 246, 0.22), transparent 55%),
        radial-gradient(ellipse 50% 40% at 15% 80%, rgba(96, 165, 250, 0.12), transparent 50%),
        linear-gradient(180deg, rgba(9, 9, 11, 0.2) 0%, var(--color-background-dark) 100%);
    pointer-events: none;
    animation: heroGlow 12s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    from { opacity: 0.85; }
    to { opacity: 1; }
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 640px;
}

.hero-brand {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.hero-brand em {
    font-style: italic;
    color: var(--color-primary-light);
}

.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.6rem);
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--color-white-70);
    margin-bottom: 1rem;
}

.hero-text {
    font-size: 1.05rem;
    color: var(--color-white-50);
    max-width: 36rem;
    margin-bottom: 2rem;
}

.hero-inner .btn {
    animation: fadeUp 0.8s ease 0.2s both;
}

.hero-brand {
    animation: fadeUp 0.7s ease both;
}

.hero-headline {
    animation: fadeUp 0.7s ease 0.08s both;
}

.hero-text {
    animation: fadeUp 0.7s ease 0.14s both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== Sections ========== */
.section {
    padding: 4.5rem 0;
}

.section-header {
    margin-bottom: 2.5rem;
    max-width: 36rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.section-description {
    color: var(--color-white-50);
    font-size: 1rem;
}

/* ========== Filters ========== */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.filter-chip {
    appearance: none;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-white-70);
    font-family: var(--font-body);
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.filter-chip:hover,
.filter-chip:focus-visible {
    border-color: rgba(59, 130, 246, 0.5);
    color: var(--color-white);
}

.filter-chip.is-active {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* ========== Project list ========== */
.project-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.project-item {
    border-top: 1px solid var(--color-border);
    padding: 1.75rem 0;
    transition: background 0.25s ease;
}

.project-item:last-child {
    border-bottom: 1px solid var(--color-border);
}

.project-item.is-hidden {
    display: none;
}

.project-item-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.25rem 2rem;
    align-items: end;
}

.project-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-primary-light);
    margin-bottom: 0.5rem;
}

.project-title {
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.project-teaser {
    color: var(--color-white-50);
    font-size: 0.98rem;
    max-width: 42rem;
}

.project-link {
    color: var(--color-primary-light);
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.2s ease;
    align-self: center;
}

.project-link:hover,
.project-link:focus-visible {
    color: var(--color-white);
}

.project-link::after {
    content: " →";
}

.project-empty {
    display: none;
    padding: 2rem 0;
    color: var(--color-white-50);
}

.project-empty.is-visible {
    display: block;
}

/* ========== Detail page ========== */
.detail-hero {
    padding: 3.5rem 0 2rem;
    position: relative;
}

.detail-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 80% at 90% 0%, rgba(59, 130, 246, 0.18), transparent 55%);
    pointer-events: none;
}

.breadcrumb {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.5rem;
    font-size: 0.85rem;
    color: var(--color-white-50);
    margin-bottom: 1.75rem;
    list-style: none;
    padding: 0;
}

.breadcrumb a:hover {
    color: var(--color-primary-light);
}

.breadcrumb li:not(:last-child)::after {
    content: "/";
    margin-left: 0.5rem;
    color: var(--color-border);
}

.detail-category {
    position: relative;
    z-index: 1;
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-primary-light);
    margin-bottom: 0.75rem;
}

.detail-title {
    position: relative;
    z-index: 1;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.detail-teaser {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
    color: var(--color-white-70);
    max-width: 40rem;
    margin-bottom: 1.5rem;
}

.tech-tags {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
    list-style: none;
    padding: 0;
}

.tech-tags li {
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-white-70);
    background: var(--color-surface);
}

.detail-body {
    padding: 1rem 0 4rem;
}

.detail-content {
    max-width: 42rem;
}

.detail-content p {
    color: var(--color-white-70);
    margin-bottom: 1.25rem;
}

.detail-content h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    margin: 2rem 0 1rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--color-white-70);
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.related-section {
    border-top: 1px solid var(--color-border);
    padding-top: 3rem;
    margin-top: 2rem;
}

.related-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
    display: flex;
    flex-direction: column;
}

.related-list li {
    border-top: 1px solid var(--color-border);
}

.related-list a {
    display: block;
    padding: 1.1rem 0;
    transition: color 0.2s ease;
}

.related-list a:hover {
    color: var(--color-primary-light);
}

.related-list .related-cat {
    display: block;
    font-size: 0.75rem;
    color: var(--color-white-50);
    margin-bottom: 0.25rem;
}

.related-list .related-name {
    font-family: var(--font-display);
    font-size: 1.2rem;
}

/* ========== Footer ========== */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 2.5rem 0;
    margin-top: 2rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1.5rem;
    align-items: center;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.1rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-white-50);
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-copy {
    width: 100%;
    font-size: 0.8rem;
    color: var(--color-white-50);
    margin-top: 0.5rem;
}

/* ========== Scroll top ========== */
.scroll-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.9);
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    z-index: 900;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    background: rgb(59, 130, 246);
}

.scroll-to-top svg {
    width: 22px;
    height: 22px;
}

/* ========== Responsive ========== */
@media (max-width: 809px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(9, 9, 11, 0.97);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 1.5rem 1.5rem;
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    }

    .main-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .hero {
        min-height: auto;
        padding: 3rem 0 4rem;
    }

    .project-item-inner {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .project-link {
        align-self: start;
    }

    .btn-group {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-group .btn {
        width: 100%;
    }
}

@media (min-width: 810px) and (max-width: 1199px) {
    .container,
    .header-container {
        max-width: 810px;
    }
}

/* ========== Legal / Impressum ========== */
.legal-section {
    padding: 3.5rem 0 4.5rem;
}

.legal-header {
    margin-bottom: 2.5rem;
    max-width: 40rem;
}

.legal-kicker {
    font-size: 0.95rem;
    color: var(--color-white-50);
    margin-bottom: 0.75rem;
}

.legal-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.legal-subtitle {
    color: var(--color-white-70);
    font-size: 1.05rem;
}

.legal-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: clamp(1.5rem, 4vw, 2.75rem);
}

.legal-article + .legal-article {
    margin-top: 3.5rem;
    padding-top: 3rem;
    border-top: 1px solid var(--color-border);
}

.legal-article h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.legal-article h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
    color: var(--color-white);
}

.legal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 1rem;
}

.legal-grid h3 {
    margin-top: 0;
}

.legal-list {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--color-white-70);
    line-height: 1.8;
}

.legal-list a,
.legal-prose a {
    color: var(--color-primary-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.legal-list a:hover,
.legal-prose a:hover {
    color: var(--color-white);
}

.legal-prose {
    color: var(--color-white-70);
    line-height: 1.8;
}

.legal-prose p {
    margin-bottom: 1rem;
}

.legal-prose ul {
    margin: 0 0 1.25rem 1.25rem;
    padding: 0;
}

.legal-prose li {
    margin-bottom: 0.4rem;
}

.legal-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.legal-toc a {
    color: var(--color-primary-light);
}

.legal-toc a:hover {
    color: var(--color-white);
}