/* ========================================
   Neubeck Data Solutions & Consulting
   Main Stylesheet
   ======================================== */

/* Local Font Imports (DSGVO-konform) */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/Inter-Regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/Inter-Medium.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/Inter-Bold.woff2') format('woff2');
}

/* CSS Reset & Variables */
:root {
    /* Colors */
    --color-primary: #1E3A5F;
    --color-primary-light: #2E86AB;
    --color-accent: #28A745;
    --color-accent-hover: #218838;
    --color-neutral: #F8F9FA;
    --color-neutral-dark: #E9ECEF;
    --color-text: #212529;
    --color-text-light: #6C757D;
    --color-white: #FFFFFF;
    --color-border: #DEE2E6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;

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

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

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

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

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   Typography
   ======================================== */

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

h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

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

.lead {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

/* ========================================
   Layout Components
   ======================================== */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section--gray {
    background-color: var(--color-neutral);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--color-text-light);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.section-cta .btn--outline {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--color-accent);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

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

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

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

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

.lang-switch {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background-color: var(--color-neutral);
    border-radius: var(--radius-md);
}

.lang-switch a {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.lang-switch a:hover {
    color: var(--color-text);
}

.lang-switch a.active {
    background-color: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* Mobile Menu Button */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

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

/* ========================================
   Hero Section
   ======================================== */

.hero {
    padding-top: calc(var(--header-height) + var(--spacing-4xl));
    padding-bottom: var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    color: var(--color-white);
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

.hero .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

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

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

.btn--outline {
    border: 2px solid var(--color-white);
    color: var(--color-white);
    background-color: transparent;
}

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

/* ========================================
   Service Cards
   ======================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.service-card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ========================================
   Feature Section
   ======================================== */

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.feature {
    padding: var(--spacing-lg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.feature h4 {
    margin-bottom: var(--spacing-sm);
}

.feature p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta h2 {
    color: var(--color-white);
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ========================================
   About Section
   ======================================== */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-content h2 {
    margin-bottom: var(--spacing-lg);
}

.about-content p {
    color: var(--color-text-light);
}

/* ========================================
   Contact Section
   ======================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.contact-item-content h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-item-content p,
.contact-item-content a {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* Contact Form */
.contact-form {
    background-color: var(--color-neutral);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(46, 134, 171, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group .error {
    color: #DC3545;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* Honeypot field */
.hp-field {
    position: absolute;
    left: -9999px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 300px;
}

.footer-nav h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-base);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

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

/* ========================================
   Page Header (for subpages)
   ======================================== */

.page-header {
    padding-top: calc(var(--header-height) + var(--spacing-3xl));
    padding-bottom: var(--spacing-3xl);
    background-color: var(--color-neutral);
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header .lead {
    margin-bottom: 0;
}

/* ========================================
   Legal Pages (Impressum, Datenschutz)
   ======================================== */

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: var(--font-size-2xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
}

.legal-content h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

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

.legal-content ul,
.legal-content ol {
    padding-left: var(--spacing-xl);
}

.legal-content li {
    margin-bottom: var(--spacing-sm);
    list-style: disc;
}

.legal-content a {
    color: var(--color-primary-light);
}

/* ========================================
   Utility Classes
   ======================================== */

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

.text-primary {
    color: var(--color-primary);
}

.text-accent {
    color: var(--color-accent);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-md);
}

.mb-2 {
    margin-bottom: var(--spacing-xl);
}

.mt-1 {
    margin-top: var(--spacing-md);
}

.mt-2 {
    margin-top: var(--spacing-xl);
}

/* Main content wrapper to push footer down */
main {
    flex: 1;
}