/* =================================================================
   MATTHIASBREUEL.COM - Main Styles
   Personal Brand Website
   ================================================================= */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Kann später angepasst werden */
    --color-primary: #2563eb;      /* Blue */
    --color-primary-dark: #1e40af;
    --color-primary-light: #3b82f6;

    --color-secondary: #10b981;    /* Green */
    --color-accent: #f59e0b;       /* Amber */

    --color-text: #1a1a1a;
    --color-text-light: #4b5563;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;

    /* Typography */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Source Sans 3', sans-serif;

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

    /* Layout */
    --max-width: 1200px;
    --border-radius: 8px;

    /* Transitions */
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

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

strong {
    font-weight: 600;
    color: var(--color-primary);
}

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

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

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

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

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
}

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

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

/* ===== Section Utilities ===== */
section {
    padding: var(--spacing-xl) 0;
}

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

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    padding-top: calc(80px + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, #f9fafb 0%, #ffffff 100%);
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

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

.hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

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

.hero-text p {
    font-size: 1.125rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-placeholder {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
}

.hero-reviews {
    max-width: var(--max-width);
    margin: var(--spacing-md) auto 0;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.review-badge {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* ===== Activities Section ===== */
.activities {
    background-color: white;
}

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

.activity-card {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.activity-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
    transform: translateY(-4px);
}

.activity-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.activity-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.activity-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.activity-link {
    display: inline-block;
    font-weight: 600;
    color: var(--color-primary);
}

.activity-link:hover {
    text-decoration: underline;
}

/* ===== Credentials Section ===== */
.credentials {
    background-color: var(--color-bg-alt);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.credential-badge {
    text-align: center;
    padding: var(--spacing-md);
}

.credential-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.credential-badge h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.credential-badge p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ===== About Preview Section ===== */
.about-preview {
    background-color: white;
}

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

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

.about-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

/* ===== CTA Section ===== */
.cta {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

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

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

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

.cta .btn-secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

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

/* ===== Footer ===== */
.footer {
    background-color: var(--color-text);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-col h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-col p,
.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-col a:hover {
    color: white;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.5rem;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    margin: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 69px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    /* Hero */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image-placeholder {
        width: 300px;
        height: 300px;
    }

    .hero-cta {
        justify-content: center;
    }

    /* Activities */
    .activities-grid {
        grid-template-columns: 1fr;
    }

    /* Credentials */
    .credentials-grid {
        grid-template-columns: 1fr;
    }

    /* CTA */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    section {
        padding: var(--spacing-lg) 0;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}