/* Professional Design System - EisenLogistik */

:root {
    /* Colors */
    --color-primary: #1B3A5F;
    --color-secondary: #2C3E50;
    --color-accent-gold: #D4AF37;
    --color-accent-teal: #2C8C99;
    --color-white: #FFFFFF;
    --color-bg-light: #F4F6F8;
    --color-gray: #7F8C8D;
    --color-text-dark: #2C3E50;
    --color-success: #27AE60;
    --color-alert: #E74C3C;

    /* Typography */
    --font-serif: 'Merriweather', Georgia, serif;
    --font-sans: 'Inter', 'Open Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 1.875rem;
    --fs-3xl: 2.25rem;
    --fs-4xl: 3rem;
    --fs-5xl: 3.75rem;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.18);

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Container */
    --container-max: 1400px;
    --container-narrow: 900px;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--color-text-dark);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

h1 { font-size: var(--fs-5xl); }
h2 { font-size: var(--fs-4xl); }
h3 { font-size: var(--fs-3xl); }
h4 { font-size: var(--fs-2xl); }
h5 { font-size: var(--fs-xl); }
h6 { font-size: var(--fs-lg); }

p {
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--color-accent-teal);
}

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Sections */
.section {
    padding: var(--space-3xl) 0;
}

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

.section-header {
    margin-bottom: var(--space-2xl);
}

.section-header-centered {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: var(--fs-4xl);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--fs-lg);
    color: var(--color-gray);
    font-weight: 300;
}

/* Top Bar */
.top-bar {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--space-xs) 0;
    font-size: var(--fs-sm);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    gap: var(--space-md);
}

.top-bar-link {
    color: var(--color-white);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.top-bar-link:hover {
    color: var(--color-accent-gold);
}

.top-bar-hours {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Header */
.professional-header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    font-size: var(--fs-2xl);
    color: var(--color-accent-gold);
}

.logo-text {
    font-family: var(--font-serif);
}

.main-nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--color-text-dark);
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gold);
    transition: var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--fs-xl);
    color: var(--color-primary);
    cursor: pointer;
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--color-white);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transition: var(--transition-base);
    overflow-y: auto;
}

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

.mobile-nav-content {
    padding: var(--space-lg);
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-bg-light);
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: var(--fs-xl);
    color: var(--color-primary);
    cursor: pointer;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    color: var(--color-text-dark);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.mobile-nav-link:hover {
    background: var(--color-bg-light);
}

.mobile-nav-link.mobile-nav-cta {
    background: var(--color-primary);
    color: var(--color-white);
}

.mobile-nav-contact {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 2px solid var(--color-bg-light);
}

.mobile-nav-contact-title {
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.mobile-nav-contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    font-size: var(--fs-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--color-accent-teal);
    border-color: var(--color-accent-teal);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-accent-gold);
    color: var(--color-white);
    border-color: var(--color-accent-gold);
}

.btn-secondary:hover {
    background: #C39B2C;
    border-color: #C39B2C;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--fs-md);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--fs-sm);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-md);
}

.form-control,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm);
    font-family: inherit;
    font-size: var(--fs-base);
    color: var(--color-text-dark);
    background: var(--color-white);
    border: 2px solid #DFE6E9;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.form-control:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(27, 58, 95, 0.1);
}

.form-textarea {
    resize: vertical;
}

.form-file {
    width: 100%;
    padding: var(--space-sm);
    font-family: inherit;
    font-size: var(--fs-sm);
}

label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--color-text-dark);
}

.form-help {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--fs-sm);
    color: var(--color-gray);
}

.form-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.form-group-inline {
    display: flex;
    gap: var(--space-sm);
}

.form-group-inline input {
    flex: 1;
}

.form-section {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-xl);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.form-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-actions {
    text-align: center;
}

.form-note {
    margin-top: var(--space-sm);
    font-size: var(--fs-sm);
    color: var(--color-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-truck.jpg') center/cover no-repeat;
    opacity: 0.2;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-title {
    font-size: var(--fs-5xl);
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-xl);
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    background: var(--color-white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.service-icon i {
    font-size: var(--fs-2xl);
    color: var(--color-accent-gold);
}

.service-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-sm);
}

.service-description {
    color: var(--color-gray);
    margin-bottom: var(--space-md);
}

.service-features {
    list-style: none;
    margin-bottom: var(--space-md);
}

.service-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    margin-bottom: var(--space-xs);
}

.service-features i {
    color: var(--color-success);
    margin-top: 4px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-primary);
    font-weight: 600;
}

.service-link:hover {
    color: var(--color-accent-teal);
}

/* Trust Indicators */
.trust-indicators {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-2xl) 0;
}

.trust-item {
    text-align: center;
}

.trust-number {
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--color-accent-gold);
    font-family: var(--font-serif);
}

.trust-label {
    font-size: var(--fs-md);
    color: var(--color-gray);
}

/* Blog Cards */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.blog-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-image-link {
    position: relative;
    display: block;
}

.blog-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.blog-category {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: var(--color-accent-gold);
    color: var(--color-white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    font-weight: 600;
}

.blog-content {
    padding: var(--space-lg);
}

.blog-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: var(--fs-sm);
    color: var(--color-gray);
}

.blog-date,
.blog-reading-time {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.blog-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-sm);
}

.blog-title a {
    color: var(--color-primary);
}

.blog-excerpt {
    color: var(--color-gray);
    margin-bottom: var(--space-md);
}

.blog-read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-primary);
    font-weight: 600;
}

.blog-read-more:hover {
    color: var(--color-accent-teal);
}

/* Footer */
.professional-footer {
    background: var(--color-secondary);
    color: var(--color-white);
    padding-top: var(--space-2xl);
}

.footer-newsletter {
    background: var(--color-primary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.newsletter-title {
    font-size: var(--fs-2xl);
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.newsletter-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.newsletter-form {
    flex: 1;
    max-width: 500px;
}

.newsletter-form input {
    background: var(--color-white);
}

.footer-main {
    margin-bottom: var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.footer-column {
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-md);
}

.footer-certifications h4 {
    font-size: var(--fs-base);
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.cert-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.cert-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-accent-gold);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-heading {
    font-size: var(--fs-lg);
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-base);
}

.footer-nav a:hover {
    color: var(--color-accent-gold);
    padding-left: var(--space-xs);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.contact-item {
    display: flex;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.8);
}

.contact-item i {
    color: var(--color-accent-gold);
    margin-top: 4px;
}

.contact-item a {
    color: rgba(255, 255, 255, 0.8);
}

.contact-item a:hover {
    color: var(--color-accent-gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-lg) 0;
    text-align: center;
}

.footer-legal-info {
    margin-bottom: var(--space-md);
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.footer-legal-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--fs-sm);
}

.footer-legal-links a:hover {
    color: var(--color-accent-gold);
}

.footer-copyright {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.6);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 50px;
    height: 50px;
    background: var(--color-accent-gold);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: var(--fs-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary);
    transform: translateY(-5px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --fs-5xl: 3rem;
        --fs-4xl: 2.5rem;
        --fs-3xl: 2rem;
    }

    .footer-newsletter {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-form {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        flex-direction: column;
        gap: var(--space-xs);
        text-align: center;
    }

    .top-bar-left {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: var(--fs-3xl);
    }

    .hero-subtitle {
        font-size: var(--fs-md);
    }

    .hero-actions {
        flex-direction: column;
    }

    .form-grid-2,
    .form-grid-3 {
        grid-template-columns: 1fr;
    }

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

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

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

    :root {
        --space-3xl: 4rem;
        --space-2xl: 3rem;
    }
}

@media (max-width: 480px) {
    :root {
        --fs-5xl: 2.5rem;
        --fs-4xl: 2rem;
        --fs-3xl: 1.75rem;
    }

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

    .btn {
        width: 100%;
        justify-content: center;
    }

    .back-to-top {
        bottom: var(--space-sm);
        right: var(--space-sm);
        width: 45px;
        height: 45px;
    }
}