/* ===== WIRSTARTENKI GLOBAL DESIGN SYSTEM ===== */

/* ===== CSS RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== DESIGN TOKENS ===== */
:root {
    /* Colors */
    --bg-primary: #051C2C;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent: #00D4FF;
    --accent-hover: #33DFFF;
    --accent-glow: rgba(0, 212, 255, 0.25);
    --border: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-hover: rgba(255, 255, 255, 0.06);
    --negative: rgba(255, 255, 255, 0.3);
    --negative-bg: rgba(255, 255, 255, 0.015);

    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing (8pt grid) */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 80px;
    --space-4xl: 120px;

    /* Transitions */
    --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 0.2s;
    --duration-normal: 0.4s;
    --duration-slow: 0.6s;
}

/* ===== GLOBAL STYLES ===== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== ANIMATED BACKGROUND ===== */
.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.bg-vignette {
    background:
        radial-gradient(ellipse 80% 50% at 20% 30%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 70%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
}

.bg-lines {
    opacity: 0.15;
}

.bg-lines svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.bg-lines path {
    fill: none;
    stroke: var(--accent);
    stroke-width: 0.6;
    animation: lineDrift 20s linear infinite;
}

.bg-lines path:nth-child(2) {
    animation-delay: -5s;
    animation-duration: 25s;
}

.bg-lines path:nth-child(3) {
    animation-delay: -10s;
    animation-duration: 30s;
}

.bg-lines path:nth-child(4) {
    animation-delay: -15s;
    animation-duration: 22s;
}

@keyframes lineDrift {
    0% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(-3%);
    }

    100% {
        transform: translateX(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .bg-lines path {
        animation: none;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    position: relative;
    z-index: 1;
}

section {
    position: relative;
    z-index: 1;
}

/* ===== HEADER ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: rgba(5, 28, 44, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: padding var(--duration-fast) var(--ease-out);
}

.header.scrolled {
    padding: var(--space-xs) 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.3px;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
    color: var(--text-primary);
}

.lang-switch {
    display: flex;
    gap: 4px;
    background: var(--card-bg);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.lang-btn {
    padding: 6px 12px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out);
}

.lang-btn.active {
    background: var(--accent);
    color: var(--bg-primary);
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--duration-normal) var(--ease-out);
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--card-hover);
    border-color: rgba(0, 212, 255, 0.3);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Mobile nav */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

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

    .nav-toggle {
        display: block;
    }

    .header .btn-primary {
        padding: 10px 16px;
        font-size: 13px;
    }

    .nav {
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .header .btn-primary {
        display: none;
    }

    .container {
        padding: 0 var(--space-sm);
    }
}

/* ===== HERO ===== */
.hero {
    padding: var(--space-4xl) 0 var(--space-3xl);
    text-align: center;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(44px, 8vw, 76px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(17px, 2.5vw, 21px);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    line-height: 1.15;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== SOLUTION SECTIONS (JTBD + VALUE STACK) ===== */
.solution-section {
    padding: var(--space-4xl) 0;
    border-bottom: 1px solid var(--border);
}

.solution-section:last-of-type {
    border-bottom: none;
}

.solution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

/* JTBD Pain Column */
.jtbd-column {
    padding: var(--space-xl);
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
}

.jtbd-column h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.jtbd-item {
    margin-bottom: var(--space-md);
}

.jtbd-item:last-child {
    margin-bottom: 0;
}

.jtbd-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
    margin-bottom: 4px;
    display: block;
}

.jtbd-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Value Stack Column */
.value-stack-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.value-stack-column h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-sm);
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding-bottom: var(--space-md);
}

.comparison-table th:first-child {
    color: var(--text-muted);
    width: 25%;
}

.comparison-table th:nth-child(2) {
    color: var(--accent);
    width: 37.5%;
}

.comparison-table th:nth-child(3) {
    color: var(--text-muted);
    opacity: 0.6;
    width: 37.5%;
}

.comparison-table td {
    font-size: 14px;
    line-height: 1.5;
}

.comparison-table td:first-child {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
}

/* WirStartenKI Column - Highlighted/Glowing */
.wsk-cell {
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 8px;
    position: relative;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.05);
}

.wsk-cell::before {
    content: '✓';
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background: var(--accent);
    color: var(--bg-primary);
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
    margin-right: 10px;
    flex-shrink: 0;
}

/* ChatGPT Column - Dimmed */
.chatgpt-cell {
    opacity: 0.5;
    color: var(--text-muted);
}

.chatgpt-cell::before {
    content: '⚠';
    display: inline-block;
    margin-right: 8px;
    color: rgba(255, 200, 100, 0.7);
}

/* Table wrapper for glassmorphism effect */
.table-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.table-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 50%;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.03) 0%, transparent 60%);
    pointer-events: none;
}

.solution-cta {
    text-align: center;
    margin-top: var(--space-lg);
}

/* ===== COMING SOON CARD ===== */
.coming-soon-section {
    padding: var(--space-4xl) 0;
}

.coming-soon-card {
    background: var(--card-bg);
    border: 2px dashed var(--border);
    border-radius: 24px;
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.7;
    filter: blur(0.5px);
    transition: all var(--duration-normal) var(--ease-out);
}

.coming-soon-card:hover {
    opacity: 0.85;
    filter: blur(0);
    border-color: rgba(0, 212, 255, 0.2);
}

.coming-soon-card h3 {
    font-family: var(--font-serif);
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.coming-soon-card p {
    font-size: 18px;
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== FOOTER ===== */
.footer {
    padding: var(--space-3xl) 0 var(--space-lg);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-section h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-xs);
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
}

.footer-legal {
    display: flex;
    gap: var(--space-md);
    list-style: none;
}

.footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: color var(--duration-fast) var(--ease-out);
}

.footer-legal a:hover {
    color: var(--text-primary);
}

.footer-copy {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slow) var(--ease-out),
        transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

/* ===== RESPONSIVE - SOLUTION SECTIONS ===== */
@media (max-width: 968px) {
    .solution-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .jtbd-column {
        order: -1;
    }
}

@media (max-width: 768px) {

    .comparison-table th,
    .comparison-table td {
        padding: var(--space-xs) var(--space-sm);
        font-size: 13px;
    }

    .comparison-table th:first-child,
    .comparison-table td:first-child {
        width: 20%;
    }

    .solution-section {
        padding: var(--space-3xl) 0;
    }
}

@media (max-width: 480px) {
    .comparison-table {
        display: block;
    }

    .comparison-table thead {
        display: none;
    }

    .comparison-table tbody,
    .comparison-table tr,
    .comparison-table td {
        display: block;
        width: 100%;
    }

    .comparison-table tr {
        margin-bottom: var(--space-md);
        padding-bottom: var(--space-md);
        border-bottom: 1px solid var(--border);
    }

    .comparison-table td {
        padding: var(--space-xs) 0;
        border-bottom: none;
    }

    .comparison-table td:first-child {
        width: 100%;
        color: var(--accent);
        font-size: 12px;
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: var(--space-xs);
    }

    .wsk-cell,
    .chatgpt-cell {
        padding: var(--space-sm);
        border-radius: 8px;
        margin-bottom: var(--space-xs);
    }

    .wsk-cell {
        background: var(--card-bg);
        border: 1px solid rgba(0, 212, 255, 0.2);
    }

    .chatgpt-cell {
        background: var(--negative-bg);
    }
}