/* 
* Microsoft365-Trainer
* Hauptstylesheet 
*/

:root {
    --primary: #0078d4;
    --primary-dark: #106ebe;
    --primary-light: #c7e0f4;
    --primary-lighter: #f0f6fc;
    --secondary: #6264a7; /* Teams color */
    --secondary-light: #8b8cc7;
    --secondary-lighter: #e9e9f5;
    --accent: #7fba00; /* Excel/Green */
    --accent-dark: #548200;
    --accent-light: #d4e8bb;
    --dark: #252423;
    --dark-light: #605e5c;
    --light: #f9f9f9;
    --light-gray: #edebe9;
    --white: #ffffff;
    --font-heading: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --border-radius-s: 4px;
    --border-radius-m: 8px;
    --border-radius-l: 16px;
    --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-large: 0 20px 48px rgba(0, 0, 0, 0.16);
    --transition: all 0.25s ease;
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    font-weight: 600;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 6rem 0;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-small);
    transition: var(--transition);
}

header.scrolled {
    padding: 0.5rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    transition: var(--transition);
    text-decoration: none;
}

.logo span {
    color: var(--dark);
    font-weight: 400;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

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

nav ul li a.active {
    color: var(--primary);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

nav ul li a:hover::after,
nav ul li a.active::after {
    transform: scaleX(1);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-m);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    letter-spacing: -0.01em;
    text-align: center;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 120, 212, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 120, 212, 0.3);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(98, 100, 167, 0.2);
}

.btn-secondary:hover {
    background-color: var(--secondary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(98, 100, 167, 0.3);
}

.btn-accent {
    background-color: var(--accent);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(127, 186, 0, 0.2);
}

.btn-accent:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(127, 186, 0, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--primary-lighter);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--dark);
    cursor: pointer;
}

/* Footer Styles */
footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 5rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* Media Queries */
@media (max-width: 992px) {
    nav {
        display: none;
    }
    
    nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        padding: 1rem 0;
        box-shadow: var(--shadow-medium);
    }
    
    nav.active ul {
        flex-direction: column;
        gap: 0;
    }
    
    nav.active ul li a {
        display: block;
        padding: 1rem 2rem;
    }
    
    nav.active ul li a::after {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu-btn.active {
        color: var(--primary);
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}