/* ========================================
   PyGVAMP Website Styles
   ======================================== */

:root {
    --color-bg: #0a0a0a;
    --color-bg-dark: #000000;
    --color-bg-card: #141414;
    --color-bg-card-hover: #1a1a1a;
    --color-text: #e0e0e0;
    --color-text-white: #ffffff;
    --color-text-muted: #888888;
    --color-accent: #4ECDC4;
    --color-accent-hover: #45B7AA;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.15);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-accent-hover);
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-left,
.nav-right {
    display: flex;
    gap: 2rem;
    flex: 1;
}

.nav-right {
    justify-content: flex-end;
}

.nav-link {
    color: var(--color-text);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.nav-logo {
    margin: 0 2rem;
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--color-text-white);
    letter-spacing: 2px;
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-white);
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background-color: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(10px);
}

.mobile-menu.active {
    display: flex;
}

.mobile-link {
    color: var(--color-text-white);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.mobile-link:hover {
    color: var(--color-accent);
}

@media (max-width: 768px) {
    .nav-left,
    .nav-right {
        display: none;
    }

    .nav {
        justify-content: space-between;
    }

    .nav-logo {
        margin: 0;
    }

    .nav-toggle {
        display: flex;
    }
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 6rem 2rem 4rem;
    background: radial-gradient(ellipse at center bottom, rgba(78, 205, 196, 0.08) 0%, transparent 60%),
                var(--color-bg-dark);
}

.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.hero-content {
    max-width: 600px;
    text-align: left;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-text-white);
    letter-spacing: 6px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.hero-viewer-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .hero-split {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content {
        text-align: center;
        order: 2;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-viewer-wrap {
        order: 1;
    }

    .hero-title {
        font-size: 2.5rem;
        letter-spacing: 3px;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .protein-viewer-hero {
        height: 280px;
    }
}

/* ========================================
   3Dmol.js Protein Viewers
   ======================================== */

.protein-viewer {
    position: relative;
    width: 100%;
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.protein-viewer canvas {
    display: block;
}

.protein-viewer-hero {
    height: 400px;
    border: none;
    background: transparent;
}

.protein-viewer-detail {
    height: 400px;
    background-color: var(--color-bg);
}

.detail-viewer-section {
    padding-top: 0;
    padding-bottom: 2rem;
}

/* Viewer + System info side by side */
.viewer-info-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}

.system-info-box {
    padding: 1.5rem;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    align-self: stretch;
    display: flex;
    flex-direction: column;
}

.system-info-box .sidebar-dl {
    flex: 1;
}

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

    .protein-viewer-detail {
        height: 280px;
    }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-bg-dark);
    background-color: var(--color-accent);
    border: 2px solid var(--color-accent);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-bg-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent);
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 0.9rem;
}

/* ========================================
   Sections
   ======================================== */

.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-dark {
    max-width: none;
    background-color: var(--color-bg-dark);
}

.section-dark > * {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-white);
}

.section-title span {
    color: var(--color-accent);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.page-header {
    padding-top: 8rem;
    padding-bottom: 2rem;
}

/* ========================================
   Features Grid (Landing)
   ======================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2.5rem 2rem;
    border-left: 3px solid var(--color-accent);
    background-color: var(--color-bg-card);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background-color: var(--color-bg-card-hover);
    transform: translateY(-2px);
}

.feature-icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-white);
    margin-bottom: 0.75rem;
}

.feature-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

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

/* ========================================
   Analyses Preview (Landing)
   ======================================== */

.analyses-preview {
    text-align: center;
    margin-top: 2rem;
}

/* ========================================
   Analysis Grid (List Page)
   ======================================== */

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.analysis-card {
    display: block;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    overflow: hidden;
    color: var(--color-text);
}

.analysis-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    color: var(--color-text);
}

.analysis-card-thumb {
    height: 200px;
    background-color: var(--color-bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.analysis-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.analysis-card-placeholder {
    color: var(--color-border-strong);
}

.analysis-card-placeholder svg {
    width: 60px;
    height: 60px;
}

.analysis-card-body {
    padding: 1.5rem;
}

.analysis-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 0.5rem;
}

.analysis-card-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.analysis-card-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.meta-badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.25rem 0.75rem;
    background-color: rgba(78, 205, 196, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(78, 205, 196, 0.2);
}

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

/* ========================================
   Analysis Detail Page
   ======================================== */

.back-link {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--color-accent);
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 3rem;
    align-items: start;
}

.detail-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 2.5rem;
}

.detail-report-cta {
    padding: 2rem;
    background-color: var(--color-bg-card);
    border-left: 3px solid var(--color-accent);
}

.detail-report-cta .btn {
    margin-bottom: 1rem;
}

.detail-report-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Sidebar */
.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-section {
    padding: 1.5rem;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.sidebar-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
}

.sidebar-dl dt {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.sidebar-dl dd {
    font-size: 0.85rem;
    color: var(--color-text-white);
}

.sidebar-link {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
}

.citation {
    margin-bottom: 1rem;
}

.citation:last-child {
    margin-bottom: 0;
}

.citation-text {
    font-size: 0.85rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: 0.25rem;
}

.citation-doi {
    font-size: 0.75rem;
    color: var(--color-accent);
    word-break: break-all;
}

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

/* ========================================
   Config Accordion Sections
   ======================================== */

.config-sections {
    padding-top: 2rem;
}

.config-sections .section-title {
    margin-bottom: 2rem;
}

.config-accordion {
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-card);
    margin-bottom: 0.5rem;
}

.config-accordion[open] {
    border-color: var(--color-border-strong);
}

.config-accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-white);
    cursor: pointer;
    transition: color 0.3s ease;
    list-style: none;
}

.config-accordion-header::-webkit-details-marker {
    display: none;
}

.config-accordion-header::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--color-accent);
    transition: transform 0.3s ease;
}

.config-accordion[open] .config-accordion-header::after {
    content: '\2212';
}

.config-accordion-header:hover {
    color: var(--color-accent);
}

.config-accordion-body {
    padding: 0 1.5rem 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.config-subsection {
    padding: 1rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
}

.config-subsection-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.config-dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.35rem 1rem;
}

.config-dl dt {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.config-dl dd {
    font-size: 0.8rem;
    color: var(--color-text);
    word-break: break-word;
}

/* ========================================
   Impressum
   ======================================== */

.impressum-content {
    max-width: 800px;
}

.impressum-content h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-white);
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.impressum-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-white);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.impressum-content p {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    font-size: 1rem;
    font-weight: 900;
    color: var(--color-text-white);
    letter-spacing: 2px;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-right {
    display: flex;
    gap: 2rem;
}

.footer-link {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--color-accent);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-right {
        gap: 1.5rem;
    }
}