/* ===================================
   UTH-CONSULTING.DE - Corporate Styles
   =================================== */

/* CSS Variables */
:root {
    --primary: #1e3a5f;
    --primary-light: #2c5282;
    --primary-dark: #1a365d;
    --accent: #3182ce;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #ffffff;
    --bg-alt: #f7fafc;
    --border: #e2e8f0;
    --success: #38a169;

    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --container-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    --border-radius: 8px;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary);
}

h1 {
    font-size: 2.25rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

p:last-child {
    margin-bottom: 0;
}

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

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

ul, ol {
    padding-left: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-xs);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    color: var(--bg);
}

.btn-secondary {
    background-color: var(--bg);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

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

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 48px;
    width: auto;
    display: block;
}

/* Desktop Navigation */
.nav {
    display: none;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-link {
    font-weight: 500;
    color: var(--text);
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
}

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

.nav-cta {
    margin-left: var(--spacing-sm);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--primary);
    transition: all var(--transition);
}

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

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

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

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-list {
    list-style: none;
    padding: var(--spacing-md);
    margin: 0;
}

.mobile-nav-list li {
    margin-bottom: 0;
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text);
    font-weight: 500;
    border-radius: var(--border-radius);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background-color: var(--bg-alt);
    color: var(--primary);
}

.mobile-nav-cta {
    display: block;
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    padding: var(--spacing-xxl) 0;
    background-image: url('../images/UC_Desktop.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(30, 58, 95, 0.3);
    pointer-events: none;
}

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

.hero h1 {
    margin-bottom: var(--spacing-sm);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

.hero-text {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.125rem;
    color: #ffffff;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.hero .btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border-color: #ffffff;
}

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

/* ===================================
   Page Header (for subpages)
   =================================== */
.page-header {
    padding: var(--spacing-xl) 0;
    background-image: url('../images/UC_Desktop.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(30, 58, 95, 0.3);
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.page-header-intro {
    max-width: 700px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
}

/* ===================================
   Section Styles
   =================================== */
.section {
    padding: var(--spacing-xxl) 0;
}

.section-alt {
    background-color: var(--bg-alt);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title-left {
    text-align: left;
}

/* ===================================
   Cards Grid
   =================================== */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.card {
    padding: var(--spacing-lg);
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    transition: box-shadow var(--transition);
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-md);
    background-color: var(--bg-alt);
    border-radius: 50%;
    color: var(--primary);
}

.card-title {
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.card-text {
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    color: var(--accent);
}

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

.card-link svg {
    transition: transform var(--transition);
}

.card-link:hover svg {
    transform: translateX(4px);
}

/* ===================================
   Benefits List
   =================================== */
.benefits-section {
    padding: var(--spacing-xxl) 0;
}

.benefits-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.benefits-quote {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary);
    font-style: italic;
    margin-bottom: var(--spacing-lg);
}

.benefits-list {
    list-style: none;
    padding: 0;
    max-width: 600px;
    margin: 0 auto;
}

.benefits-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.benefits-list svg {
    flex-shrink: 0;
    color: var(--success);
    margin-top: 2px;
}

/* ===================================
   References Teaser
   =================================== */
.references-teaser {
    text-align: center;
}

.references-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--text-light);
    font-weight: 500;
}

/* ===================================
   KodaSpec Banner
   =================================== */
.kodaspec-banner {
    background-color: var(--primary);
    color: var(--bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    text-align: center;
}

.kodaspec-banner h3 {
    color: var(--bg);
    margin-bottom: var(--spacing-sm);
}

.kodaspec-banner p {
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.kodaspec-banner .btn {
    background-color: var(--bg);
    color: var(--primary);
}

.kodaspec-banner .btn:hover {
    background-color: var(--bg-alt);
    color: var(--primary);
}

/* ===================================
   Leistungen Detail
   =================================== */
.leistung {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border);
}

.leistung:last-child {
    border-bottom: none;
}

.leistung h2 {
    margin-bottom: var(--spacing-sm);
}

.leistung-intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.leistung-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.leistung-box {
    background-color: var(--bg-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.leistung-box h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.leistung-box ul {
    margin-bottom: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tech-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-alt);
    color: var(--text);
    font-size: 0.875rem;
    border-radius: 4px;
}

/* ===================================
   Referenzen Page
   =================================== */
.referenz {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background-color: var(--bg);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

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

.referenz-header {
    margin-bottom: var(--spacing-md);
}

.referenz h3 {
    margin-bottom: var(--spacing-xs);
}

.referenz-meta {
    font-size: 0.875rem;
    color: var(--text-light);
}

.referenz-role {
    font-weight: 500;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.referenz ul {
    margin-bottom: var(--spacing-sm);
}

.referenz-result {
    font-weight: 500;
    color: var(--success);
}

/* ===================================
   About Page
   =================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xxl);
}

.about-photo {
    width: 100%;
    max-width: 250px;
    height: auto;
    margin: 0 auto;
    border-radius: var(--border-radius);
    display: block;
    object-fit: cover;
}

.about-text h2 {
    margin-bottom: var(--spacing-md);
}

.about-subsection {
    margin-bottom: var(--spacing-xl);
}

.about-subsection h3 {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary);
}

.stations-list {
    list-style: none;
    padding: 0;
}

.stations-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border);
}

.stations-list li:last-child {
    border-bottom: none;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.skill-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.skill-item svg {
    flex-shrink: 0;
    color: var(--primary);
    margin-top: 2px;
}

/* ===================================
   Contact Page
   =================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.contact-box {
    padding: var(--spacing-lg);
    background-color: var(--bg-alt);
    border-radius: var(--border-radius);
}

.contact-box h3 {
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--text);
}

.contact-item:hover {
    color: var(--primary);
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--primary);
}

.address {
    line-height: 1.8;
}

/* ===================================
   Legal Pages
   =================================== */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.legal-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.legal-content p,
.legal-content ul {
    margin-bottom: var(--spacing-md);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--primary);
    color: var(--bg);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
}

.footer-brand h4 {
    color: var(--bg);
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    opacity: 0.8;
    font-size: 0.875rem;
    margin-bottom: 0;
}

.footer-contact p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
}

.footer-contact a {
    color: var(--bg);
    opacity: 0.9;
}

.footer-contact a:hover {
    opacity: 1;
    color: var(--bg);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--bg);
    opacity: 0.8;
    font-size: 0.875rem;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--bg);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    font-size: 0.875rem;
    opacity: 0.7;
    margin-bottom: 0;
}

/* ===================================
   Responsive Breakpoints
   =================================== */

/* Tablet (768px+) */
@media (min-width: 768px) {
    h1 {
        font-size: 2.75rem;
    }

    .nav {
        display: flex;
    }

    .menu-toggle {
        display: none;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .leistung-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-intro {
        grid-template-columns: 250px 1fr;
    }

    .about-photo {
        margin: 0;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-inner {
        grid-template-columns: repeat(3, 1fr);
        text-align: left;
    }

    .footer-links {
        justify-content: flex-end;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    h1 {
        font-size: 3rem;
    }

    .hero {
        padding: calc(var(--spacing-xxl) * 1.5) 0;
    }

    .hero-tagline {
        font-size: 1.5rem;
    }

    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}