/* ============ MODERNE PROFESSIONAL DESIGN ============ */
/* DSL-IT v2 - Premium & Contemporary */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
    background: #ffffff;
    color: #1a1a1a;
    line-height: 1.6;
    letter-spacing: -0.3px;
}

/* ============ CSS CUSTOM PROPERTIES ============ */
:root {
    --primary: #1a5d6b;
    --primary-dark: #0d3a45;
    --primary-light: #2a7d8d;
    --secondary: #f0f0f0;
    --text: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --border: #e5e5e5;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-2xl: 80px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ============ TYPOGRAPHY ============ */
h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    color: var(--text);
}

h2 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: var(--text);
}

p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============ NAVIGATION ============ */
nav {
    padding: var(--spacing-lg) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

nav .brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.5px;
    color: var(--primary);
    text-transform: uppercase;
}

nav .brand .logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

nav a {
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

nav a:hover::after {
    width: 100%;
}

/* ============ MAIN CONTENT ============ */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============ HERO SECTION ============ */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(26, 93, 107, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.logo-container {
    margin-bottom: var(--spacing-2xl);
    animation: fadeInDown 0.8s ease-out;
}

.logo-image {
    width: 240px;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 10px 30px rgba(26, 93, 107, 0.1));
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    color: var(--primary);
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* ============ BUTTONS ============ */
.cta-button {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 14px 36px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: inline-block;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(26, 93, 107, 0.2);
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 93, 107, 0.3);
}

.cta-button:active {
    transform: translateY(-1px);
}

/* ============ SECTIONS ============ */
.section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out;
}

.section h2 {
    color: var(--primary);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 2px;
}

.item {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: #fafafa;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.item:hover {
    border-left-color: var(--primary-light);
    box-shadow: 0 8px 20px rgba(26, 93, 107, 0.08);
    transform: translateY(-2px);
}

.item h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 20px;
}

.item p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============ WHY ITEMS (Grid Layout) ============ */
.why-item {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.why-item:hover {
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(26, 93, 107, 0.12);
    transform: translateY(-4px);
}

.why-item h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 18px;
}

.why-item p {
    font-size: 15px;
    line-height: 1.8;
}

/* ============ GLOSSAR ============ */
.glossary-item {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #fafafa 0%, white 100%);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.glossary-item:hover {
    box-shadow: 0 8px 20px rgba(26, 93, 107, 0.08);
    transform: translateX(4px);
}

.glossary-item h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.glossary-item p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============ PHILOSOPHIE ============ */
.philosophy-list {
    margin: var(--spacing-lg) 0;
    padding-left: 0;
}

.philosophy-item {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 32px;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 32px;
    background: #fafafa;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
}

.philosophy-item::before {
    content: "→";
    position: absolute;
    left: 8px;
    color: var(--primary);
    font-size: 18px;
    font-weight: bold;
}

.philosophy-highlight {
    background: linear-gradient(135deg, rgba(26, 93, 107, 0.05) 0%, rgba(26, 93, 107, 0.02) 100%);
    border-left: 4px solid var(--primary);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.philosophy-highlight p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.philosophy-highlight p:last-child {
    margin-bottom: 0;
}

.philosophy-principle {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: #fafafa;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.philosophy-principle:hover {
    box-shadow: 0 8px 20px rgba(26, 93, 107, 0.08);
}

.philosophy-principle h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.philosophy-principle p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============ LEISTUNGEN ============ */
.service-card {
    background: linear-gradient(135deg, #fafafa 0%, white 100%);
    border-left: 4px solid var(--primary);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.service-card:hover {
    border-left-color: var(--primary-light);
    box-shadow: 0 12px 30px rgba(26, 93, 107, 0.12);
    transform: translateX(4px);
}

.service-card h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

.service-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.service-list li {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    padding-left: 28px;
    position: relative;
    line-height: 1.8;
}

.service-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    font-size: 16px;
}

.process-step {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #fafafa 0%, white 100%);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.process-step:hover {
    box-shadow: 0 12px 30px rgba(26, 93, 107, 0.12);
    transform: translateX(4px);
    border-left-color: var(--primary-light);
}

.process-step h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.process-step p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============ FOOTER ============ */
footer {
    border-top: 1px solid var(--border);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
}

footer h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    font-size: 16px;
    font-weight: 600;
}

footer p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

footer a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

footer a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary);
    transition: width 0.3s ease;
}

footer a:hover::after {
    width: 100%;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============ RESPONSIVE DESIGN ============ */
@media (max-width: 1024px) {
    h1 {
        font-size: 48px;
    }

    h2 {
        font-size: 32px;
    }

    nav {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    nav ul {
        gap: var(--spacing-md);
        font-size: 12px;
    }

    main {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) 0;
        margin-bottom: var(--spacing-xl);
    }

    .logo-image {
        width: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 24px;
        --spacing-xl: 40px;
        --spacing-2xl: 60px;
    }

    h1 {
        font-size: 40px;
    }

    h2 {
        font-size: 28px;
        margin-bottom: var(--spacing-md);
    }

    h3 {
        font-size: 18px;
    }

    p {
        font-size: 15px;
    }

    nav {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    nav ul {
        gap: var(--spacing-md);
        font-size: 11px;
        flex-wrap: wrap;
        justify-content: center;
    }

    main {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) 0;
        margin-bottom: var(--spacing-xl);
    }

    .hero::before {
        width: 300px;
        height: 300px;
    }

    .logo-image {
        width: 160px;
    }

    .hero p {
        font-size: 16px;
    }

    .item,
    .why-item,
    .glossary-item,
    .service-card,
    .process-step,
    .philosophy-principle,
    .philosophy-item {
        padding: var(--spacing-md);
    }

    .section {
        margin-bottom: var(--spacing-xl);
        padding-bottom: var(--spacing-xl);
    }

    footer {
        padding: var(--spacing-xl) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 16px;
        --spacing-lg: 20px;
        --spacing-xl: 32px;
    }

    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 24px;
    }

    nav {
        padding: var(--spacing-md);
    }

    nav .brand {
        font-size: 16px;
    }

    nav ul {
        gap: var(--spacing-sm);
        font-size: 10px;
    }

    .cta-button {
        padding: 12px 28px;
        font-size: 13px;
    }

    /* Contact Section */
    .contact-container {
        flex-direction: column;
    }

    .contact-image {
        width: 100%;
        max-width: 280px;
        margin-bottom: var(--spacing-lg);
    }
}

/* ============ CONTACT SECTION ============ */
.contact-container {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
}

.contact-image {
    flex-shrink: 0;
    width: 300px;
}

.contact-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(26, 93, 107, 0.15);
    object-fit: cover;
}

.contact-info {
    flex: 1;
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
}

.contact-info h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.contact-details {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.contact-details li {
    margin-bottom: var(--spacing-md);
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

.contact-details a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-details a:hover {
    color: var(--primary-dark);
}

@media (max-width: 768px) {
    .contact-container {
        flex-direction: column;
    }

    .contact-image {
        width: 100%;
        max-width: 280px;
        margin-bottom: var(--spacing-lg);
    }
}