/* ============================================
   VORSCHLAG C — Interim CAIO Positioning
   Axel Ganter · Chief AI Officer on Demand
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #08090e;
    --color-bg-card: #10111a;
    --color-bg-elevated: #161824;
    --color-text: #e2e0dd;
    --color-text-muted: #7f829a;
    --color-accent: #10b981;
    --color-accent-light: #34d399;
    --color-accent-glow: rgba(16, 185, 129, 0.12);
    --color-accent-warm: #f59e0b;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-white: #ffffff;
    --color-yes: rgba(16, 185, 129, 0.08);
    --color-no: rgba(245, 158, 11, 0.06);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --container-max: 1100px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Light Mode --- */
[data-theme="light"] {
    --color-bg: #f7f8fa;
    --color-bg-card: #ffffff;
    --color-bg-elevated: #eef0f4;
    --color-text: #111827;
    --color-text-muted: #374151;
    --color-accent: #059669;
    --color-accent-light: #10b981;
    --color-accent-glow: rgba(5, 150, 105, 0.06);
    --color-accent-warm: #d97706;
    --color-border: rgba(0, 0, 0, 0.07);
    --color-white: #0f172a;
    --color-yes: rgba(5, 150, 105, 0.06);
    --color-no: rgba(217, 119, 6, 0.05);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: var(--color-accent-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(8, 9, 14, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 0;
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(247, 248, 250, 0.92);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Space Mono', 'Courier New', monospace;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.04em;
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.nav-logo-sub {
    font-family: var(--font-sans);
    font-size: 0.55rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
}

.nav-logo:hover {
    color: var(--color-accent-light);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--color-white);
}

.nav-cta {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--color-accent);
    border-radius: 6px;
    color: var(--color-accent-light) !important;
}

.nav-cta:hover {
    background: var(--color-accent);
    color: var(--color-white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* --- Nav Toggles Group (theme + lang) --- */
.nav-toggles {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: 1.25rem;
    flex-shrink: 0;
}

/* --- Theme Toggle --- */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-light);
    transform: scale(1.08);
}

.icon-sun { display: block; }
.icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 2rem 2rem 6rem;
    background: radial-gradient(ellipse at 50% 0%, var(--color-accent-glow) 0%, transparent 50%);
}

.hero-content {
    max-width: 780px;
}

.hero-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 0.4rem 1.25rem;
    border-radius: 999px;
    margin-bottom: 2rem;
}

.hero-name {
    font-family: var(--font-sans);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-tagline {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-tagline strong {
    color: var(--color-accent-light);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

/* --- Hero Metrics --- */
.hero-metrics {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    padding: 1.5rem 3rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.hero-metric {
    text-align: center;
}

.metric-number {
    display: block;
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-light);
    line-height: 1;
    margin-bottom: 0.35rem;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.hero-metric-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 2rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-light);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.25);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-light);
}

/* --- Scroll Hint --- */
.hero-scroll-hint {
    position: absolute;
    bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.hero-scroll-hint span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* --- Sections General --- */
.section {
    padding: 7rem 0;
}

.section-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-sans);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 2rem;
    line-height: 1.25;
}

/* --- Problem Section --- */
.section-problem {
    border-top: 1px solid var(--color-border);
}

.problem-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.problem-text .lead {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-bottom: 1.25rem;
    line-height: 1.8;
}

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

.problem-text strong {
    color: var(--color-accent-warm);
    font-weight: 600;
}

.problem-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.problem-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: border-color var(--transition);
}

.problem-card:hover {
    border-color: var(--color-accent-warm);
}

.problem-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--color-accent-warm);
    margin-top: 2px;
}

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

.problem-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.3rem;
}

.problem-card p {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

.problem-card em {
    color: var(--color-text);
    font-style: italic;
}

/* --- Angebot Section --- */
.section-angebot {
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.angebot-intro {
    max-width: 720px;
    margin-bottom: 3rem;
}

.angebot-intro p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.angebot-intro strong {
    color: var(--color-accent-light);
}

.angebot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.angebot-card {
    padding: 2.5rem;
    background: var(--color-bg);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    position: relative;
}

.angebot-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.angebot-number {
    font-family: var(--font-sans);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-glow);
    color: var(--color-accent);
    opacity: 0.15;
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    line-height: 1;
}

.angebot-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}

.angebot-card p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.angebot-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.angebot-tags li {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
}

/* --- Methode Section --- */
.section-methode {
    border-bottom: 1px solid var(--color-border);
}

.methode-intro {
    max-width: 720px;
    margin-bottom: 3rem;
}

.methode-intro p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.methode-intro strong {
    color: var(--color-text);
}

.methode-steps {
    position: relative;
    padding-left: 3.5rem;
}

.methode-steps::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-border));
}

.methode-step {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding-bottom: 2.5rem;
}

.methode-step:last-child {
    padding-bottom: 0;
}

.step-marker {
    position: absolute;
    left: -3.5rem;
    top: 0;
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    flex-shrink: 0;
    z-index: 1;
    background: var(--color-bg);
    border-radius: 50%;
}

.step-marker svg {
    width: 100%;
    height: 100%;
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.4rem;
}

.step-content p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    max-width: 580px;
    line-height: 1.7;
}

/* --- Credentials Section --- */
.section-credentials {
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.credentials-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: start;
}

.credential-block {
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
}

.credential-block:last-child {
    border-bottom: none;
}

.credential-block h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.credential-meta {
    font-weight: 400;
    font-size: 0.82rem;
    color: var(--color-accent);
}

.credential-block p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.credential-block strong {
    color: var(--color-text);
}

.credential-block a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition);
}

.credential-block a:hover {
    border-bottom-color: var(--color-accent);
}

.credential-source {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    opacity: 0.7;
}

.credentials-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.sidebar-card {
    padding: 1.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.sidebar-card h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.sidebar-card ul {
    list-style: none;
}

.sidebar-card li {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--color-border);
    line-height: 1.5;
}

.sidebar-card li:last-child {
    border-bottom: none;
}

.sidebar-quote {
    padding: 1.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: 12px;
}

.sidebar-quote p {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 0.75rem;
}

.sidebar-quote cite {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    font-style: normal;
}

/* --- For Whom Section --- */
.section-forwho {
    border-bottom: 1px solid var(--color-border);
}

.forwho-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
}

.forwho-card {
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.forwho-yes {
    background: var(--color-yes);
    border-color: rgba(16, 185, 129, 0.15);
}

.forwho-no {
    background: var(--color-no);
    border-color: rgba(245, 158, 11, 0.1);
}

.forwho-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 1.25rem;
}

.forwho-yes h3 {
    color: var(--color-accent-light);
}

.forwho-no h3 {
    color: var(--color-accent-warm);
}

.forwho-card ul {
    list-style: none;
}

.forwho-card li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--color-text-muted);
    font-size: 0.92rem;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.forwho-card li::before {
    position: absolute;
    left: 0;
    top: 0.2em;
}

.forwho-yes li::before {
    content: '✓';
    color: var(--color-accent);
    font-weight: 700;
}

.forwho-no li::before {
    content: '—';
    color: var(--color-accent-warm);
}

/* --- Contact Section --- */
.section-contact {
    border-top: 1px solid var(--color-border);
}

.contact-intro {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 640px;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-card {
    padding: 2.5rem;
    background: var(--color-bg-card);
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.contact-card h3 {
    font-family: 'Space Mono', 'Courier New', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.25rem;
}

.contact-role {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent) !important;
    margin-bottom: 0.75rem !important;
}

.contact-card p {
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.contact-card a {
    color: var(--color-accent-light);
}

.contact-card a:hover {
    color: var(--color-white);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    justify-content: center;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.15rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
}

.contact-link:hover {
    border-color: var(--color-accent);
    color: var(--color-white);
    transform: translateX(4px);
}

.contact-link svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.contact-link:hover svg {
    opacity: 1;
}

/* Multi-line contact link (mct-net.com) */
.contact-link-multi {
    align-items: center;
}

.contact-link-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.contact-link-sub {
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--color-text-muted);
    opacity: 0.7;
    margin-top: 0.15rem;
}

/* --- Language Toggle --- */
.lang-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    flex-shrink: 0;
}

.lang-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-light);
    transform: scale(1.08);
}

.lang-label {
    font-family: var(--font-sans);
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Footer --- */
.footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

.footer-legal {
    margin-top: 0.5rem;
}

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

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

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.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 --- */
@media (max-width: 900px) {
    .problem-grid,
    .credentials-grid,
    .contact-grid,
    .forwho-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .angebot-grid {
        grid-template-columns: 1fr;
    }

    .hero-metrics {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.5rem;
        padding: 1.25rem 2rem;
    }

    .hero-metric-divider {
        display: none;
    }
}

@media (max-width: 640px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-card);
        flex-direction: column;
        justify-content: center;
        padding: 2rem;
        gap: 1.5rem;
        transition: right var(--transition);
        border-left: 1px solid var(--color-border);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .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);
    }

    .hero-name {
        font-size: 2.25rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .section {
        padding: 4.5rem 0;
    }

    .container {
        padding: 0 1.25rem;
    }

    .methode-steps {
        padding-left: 3rem;
    }

    .step-marker {
        left: -3rem;
        width: 36px;
        height: 36px;
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
    }
}