:root {
    --color-bg: #0b0e14;
    --color-bg-alt: #10141d;
    --color-surface: #161b26;
    --color-border: #232a38;
    --color-text: #e6e9f0;
    --color-text-muted: #9aa3b5;
    --color-primary: #ff751f;
    --color-primary-hover: #ff8f4d;
    --color-accent: #ffb347;
    --radius: 12px;
    --max-width: 1140px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
}

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

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

h1, h2, h3, h4 {
    line-height: 1.25;
    margin: 0 0 0.5em;
}

p {
    margin: 0 0 1em;
    color: var(--color-text-muted);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    color: #ffffff;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-hover);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 14, 20, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    padding-bottom: 16px;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.main-nav ul {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
}

.main-nav a.nav-cta,
.main-nav a.nav-cta:hover {
    color: #ffffff;
    padding: 10px 18px;
    font-size: 0.9rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
}

/* Hero */
.hero {
    padding: 100px 0 80px;
    border-bottom: 1px solid var(--color-border);
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 117, 31, 0.12), transparent 40%),
        radial-gradient(circle at 80% 0%, rgba(255, 179, 71, 0.10), transparent 40%);
}

.hero-inner {
    max-width: 720px;
}

.eyebrow {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.02em;
}

.hero-lead {
    font-size: 1.1rem;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.hero-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
    list-style: none;
    margin: 40px 0 0;
    padding: 24px 0 0;
    border-top: 1px solid var(--color-border);
    max-width: 640px;
}

.hero-benefits li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.hero-benefit-icon {
    font-size: 1rem;
}

/* Page hero (Unterseiten) */
.page-hero {
    padding: 72px 0 48px;
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 8px;
}

.section-lead {
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

/* Case study tabs */
.case-tabs {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.case-tab-buttons {
    display: flex;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}

.case-tab-btn {
    flex: 1 1 220px;
    padding: 18px 20px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-muted);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.case-tab-btn:hover {
    color: var(--color-text);
}

.case-tab-btn.active {
    color: var(--color-text);
    border-bottom-color: var(--color-primary);
    background: var(--color-surface);
}

.case-tab-panels {
    padding: 36px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-block {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.case-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
}

.case-block p {
    margin: 0;
    font-size: 0.95rem;
}

@media (max-width: 860px) {
    .case-grid {
        grid-template-columns: 1fr;
    }

    .case-tab-panels {
        padding: 28px 24px;
    }
}

@media (max-width: 640px) {
    .case-tab-btn {
        flex: 1 1 auto;
        text-align: center;
        font-size: 0.85rem;
        padding: 14px 12px;
    }
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.card-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.card h3 {
    color: var(--color-text);
}

.card p {
    margin: 0;
    font-size: 0.95rem;
}

/* Tools / tech stack */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.tool-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tool-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.tool-card h3 {
    color: var(--color-text);
    font-size: 1.05rem;
}

.tool-card p {
    margin: 0;
    font-size: 0.9rem;
}

.philosophy-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius);
    padding: 28px 32px;
}

.philosophy-box h3 {
    color: var(--color-text);
    font-size: 1.1rem;
}

.philosophy-box p {
    margin: 0 0 16px;
    font-size: 0.95rem;
    max-width: 760px;
}

.philosophy-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
    max-width: 760px;
}

.philosophy-list li {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding-left: 20px;
    position: relative;
}

.philosophy-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.philosophy-list strong {
    color: var(--color-text);
}

/* CTA box */
.cta-box {
    text-align: center;
    max-width: 640px;
}

.cta-box h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
}

/* About page */
.about-content {
    max-width: 760px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.value {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.value h3 {
    color: var(--color-text);
    font-size: 1.05rem;
}

.value p {
    margin: 0;
    font-size: 0.9rem;
}

/* Contact page */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 48px;
}

.contact-info h2 {
    font-size: 1.3rem;
    color: var(--color-text);
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
}

.contact-list li {
    margin-bottom: 12px;
}

.contact-booking-hint {
    margin: 10px 0 0;
    font-size: 0.85rem;
}

.contact-form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.honeypot {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

.alert {
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-success {
    background: rgba(255, 179, 71, 0.12);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
}

.alert-error {
    background: rgba(255, 91, 91, 0.1);
    border: 1px solid #ff5b5b;
    color: #ff9b9b;
}

.alert-error ul {
    margin: 0;
    padding-left: 18px;
}

/* Service sections (Leistungen) */
.service-block {
    max-width: 760px;
}

.service-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.service-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.service-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
}

.service-block h2 {
    font-size: clamp(1.4rem, 2.6vw, 1.9rem);
    margin-bottom: 20px;
}

.service-text {
    font-size: 1rem;
}

.service-list {
    list-style: none;
    margin: 24px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 24px;
}

.service-list li {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding-left: 20px;
    position: relative;
}

.service-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

@media (max-width: 640px) {
    .service-list {
        grid-template-columns: 1fr;
    }
}

/* Legal pages */
.legal-content {
    max-width: 760px;
}

.legal-content h2 {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-top: 32px;
}

.legal-note {
    margin-top: 32px;
    font-size: 0.85rem;
}

/* Footer */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding-top: 56px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 32px;
    padding-bottom: 40px;
}

.footer-col h4 {
    color: var(--color-text);
    font-size: 0.95rem;
    margin-bottom: 14px;
}

.footer-col p {
    font-size: 0.9rem;
    max-width: 320px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

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

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

/* Responsive */
@media (max-width: 860px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px 28px;
        gap: 20px;
        display: none;
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 16px;
        width: 100%;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .footer-bottom-inner {
        flex-direction: column;
    }
}