/* ========================================
   MODERN PROFESSIONAL PORTFOLIO
   Inspired by Google, Apple, Meta, Facebook
   Clean, Minimalist, Premium Design
   ======================================== */

/* === MODERN COLOR SYSTEM === */
:root {
    /* Light Mode - Professional Palette */
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #e8eaed;

    --color-text: #202124;
    --color-text-secondary: #5f6368;
    --color-text-tertiary: #80868b;

    /* Google/Facebook Blue as Primary */
    --color-primary: #1a73e8;
    --color-primary-hover: #1557b0;
    --color-primary-light: #e8f0fe;

    /* Accent Colors */
    --color-success: #1e8e3e;
    --color-warning: #f9ab00;
    --color-error: #d93025;

    /* Borders & Dividers */
    --color-border: #dadce0;
    --color-divider: #e0e0e0;

    /* Shadows - Material Design 3 */
    --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
    --shadow-md: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
    --shadow-lg: 0 2px 6px 2px rgba(60, 64, 67, 0.15), 0 8px 16px 4px rgba(60, 64, 67, 0.15);
    --shadow-xl: 0 4px 12px 4px rgba(60, 64, 67, 0.15), 0 12px 24px 6px rgba(60, 64, 67, 0.15);

    /* Spacing - 8px Grid System */
    --spacing-1: 0.25rem;  /* 4px */
    --spacing-2: 0.5rem;   /* 8px */
    --spacing-3: 0.75rem;  /* 12px */
    --spacing-4: 1rem;     /* 16px */
    --spacing-5: 1.25rem;  /* 20px */
    --spacing-6: 1.5rem;   /* 24px */
    --spacing-8: 2rem;     /* 32px */
    --spacing-10: 2.5rem;  /* 40px */
    --spacing-12: 3rem;    /* 48px */
    --spacing-16: 4rem;    /* 64px */
    --spacing-20: 5rem;    /* 80px */
    --spacing-24: 6rem;    /* 96px */

    /* Border Radius - Modern, Clean */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Google Sans', var(--font-sans);

    /* Font Sizes - Apple/Google Scale */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    --text-5xl: 3rem;      /* 48px */
    --text-6xl: 3.75rem;   /* 60px */
    --text-7xl: 4.5rem;    /* 72px */

    /* Transitions */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1100;
    --z-fixed: 1200;
    --z-modal: 1300;
}

/* Dark Mode - Apple/Google Style */
[data-theme="dark"] {
    --color-bg: #000000;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1e1e1e;

    --color-text: #e8eaed;
    --color-text-secondary: #9aa0a6;
    --color-text-tertiary: #5f6368;

    --color-primary: #8ab4f8;
    --color-primary-hover: #aecbfa;
    --color-primary-light: #1e3a5f;

    --color-border: #3c4043;
    --color-divider: #292929;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.6), 0 1px 3px 1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 1px 3px 0 rgba(0, 0, 0, 0.6), 0 4px 8px 3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 2px 6px 2px rgba(0, 0, 0, 0.4), 0 8px 16px 4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 4px 12px 4px rgba(0, 0, 0, 0.4), 0 12px 24px 6px rgba(0, 0, 0, 0.4);
}

/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100vw;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
    max-width: 100vw;
    transition: background-color var(--transition), color var(--transition);
}

/* Prevent all elements from causing horizontal scroll */
* {
    max-width: 100%;
}

img,
video,
iframe,
embed {
    max-width: 100%;
    height: auto;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

h1 { font-size: var(--text-6xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

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

/* === THEME TOGGLE === */
.theme-toggle {
    position: fixed;
    top: 12px;
    right: 60px;
    z-index: var(--z-fixed);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

.theme-toggle-icon {
    font-size: var(--text-base);
    color: var(--color-primary);
}

/* === ULTRA-THIN NAVIGATION === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
    transition: all var(--transition);
    height: 48px;
}

[data-theme="dark"] .navbar {
    background: rgba(0, 0, 0, 0.95);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    height: 100%;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* Home Button */
.home-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    transition: all var(--transition);
    border: 1px solid var(--color-border);
}

.home-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.home-btn i {
    font-size: 14px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.nav-brand .logo {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-brand .tagline {
    font-size: 10px;
    color: var(--color-text-tertiary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Hamburger Menu Button */
.menu-toggle {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 0;
    z-index: var(--z-modal);
    position: relative;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
    display: block;
}

.menu-toggle:hover span {
    background: var(--color-primary);
}

/* Animated Hamburger to X */
.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(7px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-7px);
}

/* Slide-out Menu - Innovative Design */
.nav-menu {
    position: fixed;
    top: 48px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 48px);
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
    box-shadow: var(--shadow-xl);
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: calc(var(--z-sticky) - 1);
    overflow-y: auto;
}

[data-theme="dark"] .nav-menu {
    background: var(--color-bg-secondary);
}

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

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-4);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: var(--text-base);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.nav-link:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    transform: translateX(4px);
}

[data-theme="dark"] .nav-link:hover {
    background: var(--color-bg-tertiary);
}

.nav-link i {
    font-size: var(--text-xl);
    width: 24px;
    text-align: center;
}

/* Nav Link Button (for modal triggers) */
.nav-link-button {
    background: none;
    border: none;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.nav-link-button:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    transform: translateX(4px);
}

[data-theme="dark"] .nav-link-button:hover {
    background: var(--color-bg-tertiary);
}

/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: calc(var(--z-sticky) - 2);
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* === HERO SECTION - MODERN, CENTERED === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(48px + var(--spacing-8)) var(--spacing-6) var(--spacing-20);
    text-align: center;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

/* Availability Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-6);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Title */
.hero-title {
    margin-bottom: var(--spacing-8);
}

.hero-greeting {
    display: block;
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3);
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: var(--spacing-4);
}

/* Animated Role Carousel */
.hero-roles {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-8);
}

.role-prefix {
    color: var(--color-text-secondary);
}

.role-carousel {
    position: relative;
    height: 1.5em;
    min-width: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.role-item {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateY(100%);
    opacity: 0;
    color: var(--color-primary);
    white-space: nowrap;
    animation: roleSlide 8s infinite;
}

.role-item:nth-child(1) { animation-delay: 0s; }
.role-item:nth-child(2) { animation-delay: 2s; }
.role-item:nth-child(3) { animation-delay: 4s; }
.role-item:nth-child(4) { animation-delay: 6s; }

@keyframes roleSlide {
    0%, 20% {
        opacity: 0;
        transform: translate(-50%, -50%) translateY(100%);
    }
    25%, 45% {
        opacity: 1;
        transform: translate(-50%, -50%) translateY(0);
    }
    50%, 100% {
        opacity: 0;
        transform: translate(-50%, -50%) translateY(-100%);
    }
}

/* Description */
.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-10);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* CTA Buttons */
.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-10);
}

/* Social Links - Fixed Positioning */
.hero-social {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
    margin-bottom: var(--spacing-20);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    transition: all var(--transition);
    position: relative;
    z-index: 10;
}

.social-link:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

/* Dark Mode Fix: Social Links Visited/Active States */
.social-link:visited,
.social-link:active,
.social-link:focus {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .social-link:visited,
[data-theme="dark"] .social-link:active,
[data-theme="dark"] .social-link:focus {
    color: #000000;
    background: var(--color-primary);
}

[data-theme="dark"] .social-link:hover {
    color: #000000;
}

.social-link i {
    font-size: var(--text-xl);
}

/* Floating Card - REMOVED (too playful) */
.hero-right,
.hero-visual,
.floating-card,
.deco-circle,
.hero-shapes {
    display: none;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-6);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    z-index: 5;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: var(--color-border);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 16px;
    background: var(--color-primary);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(-16px); }
    100% { transform: translateY(40px); }
}

.scroll-text {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* === BUTTONS - MODERN, CLEAN === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--text-base);
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn i {
    font-size: var(--text-lg);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

/* Dark Mode Fix: Primary Buttons behalten weiße Schrift */
.btn-primary:visited,
.btn-primary:active,
.btn-primary:focus {
    color: white;
}

[data-theme="dark"] .btn-primary:visited,
[data-theme="dark"] .btn-primary:active,
[data-theme="dark"] .btn-primary:focus {
    color: #000000;
}

[data-theme="dark"] .btn-primary:hover {
    color: #000000;
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

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

/* Dark Mode Fix: Visited/Active/Focus States */
.btn-secondary:visited,
.btn-secondary:active,
.btn-secondary:focus {
    color: var(--color-primary);
}

/* Dark Mode: Schwarze Schrift für sekundäre Buttons im aktiven Zustand */
[data-theme="dark"] .btn-secondary:visited,
[data-theme="dark"] .btn-secondary:active,
[data-theme="dark"] .btn-secondary:focus {
    color: #000000;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

[data-theme="dark"] .btn-secondary:hover {
    color: #000000;
    background: var(--color-primary-hover);
}

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-lg);
}

/* === SECTIONS === */
section {
    padding: var(--spacing-20) 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-3);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* === PROJECTS SECTION === */
.projects-section {
    background: var(--color-bg-secondary);
}

.featured-section {
    margin-bottom: var(--spacing-16);
}

.featured-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-8);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-3);
}

.featured-title i {
    color: var(--color-warning);
}

.all-projects-section {
    margin-top: var(--spacing-16);
}

.projects-subtitle {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-8);
    color: var(--color-text);
}

/* Project Grid - Clean, Simple */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

/* Project Cards - Modern, Clean */
.project-card {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow);
    border: 1px solid var(--color-border);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.featured-card {
    border: 2px solid var(--color-primary);
    position: relative;
}

.featured-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: var(--spacing-6);
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.overlay-link {
    color: white;
    font-weight: 500;
    padding: var(--spacing-3) var(--spacing-5);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition);
}

.overlay-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Dark Mode Fix: Overlay Links immer weiß */
.overlay-link:visited,
.overlay-link:active,
.overlay-link:focus {
    color: white;
}

.project-content {
    padding: var(--spacing-6);
}

.project-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
    color: var(--color-text);
}

.project-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
    font-size: var(--text-sm);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.tag {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 500;
    transition: all var(--transition);
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-primary);
    font-weight: 500;
    font-size: var(--text-sm);
    transition: gap var(--transition);
}

.project-link:hover {
    gap: var(--spacing-3);
}

.project-link i {
    transition: transform var(--transition);
}

.project-link:hover i {
    transform: translateX(4px);
}

/* Dark Mode Fix: Project Links behalten Primary Color */
.project-link:visited,
.project-link:active,
.project-link:focus {
    color: var(--color-primary);
}

[data-theme="dark"] .project-link:visited,
[data-theme="dark"] .project-link:active,
[data-theme="dark"] .project-link:focus {
    color: var(--color-primary);
}

/* === STATS SECTION === */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-16);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-8);
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid var(--color-border);
}

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

.stat-number {
    font-size: var(--text-5xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === CONTACT SECTION === */
.contact-section {
    background: var(--color-bg);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.contact-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

/* === LEGAL PAGES (Impressum, Datenschutz) === */
.legal-page {
    padding: calc(48px + var(--spacing-16)) 0 var(--spacing-16);
    min-height: 100vh;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

.legal-content h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-8);
    color: var(--color-text);
}

.legal-content h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-top: var(--spacing-12);
    margin-bottom: var(--spacing-6);
    color: var(--color-text);
}

.legal-content h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.legal-content p {
    margin-bottom: var(--spacing-4);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.legal-content a {
    color: var(--color-primary);
    word-break: break-all;
    display: inline-block;
    max-width: 100%;
}

.legal-content strong {
    color: var(--color-text);
    font-weight: 600;
}

.legal-content ul,
.legal-content ol {
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

.legal-content li {
    margin-bottom: var(--spacing-2);
    line-height: 1.7;
}

/* Mobile: Prevent horizontal scroll */
@media (max-width: 768px) {
    .legal-page {
        padding: calc(48px + var(--spacing-8)) 0 var(--spacing-8);
        overflow-x: hidden;
    }

    .legal-content {
        padding: 0 var(--spacing-4);
        max-width: 100%;
    }

    .legal-content h1 {
        font-size: 1.75rem;
    }

    .legal-content h2 {
        font-size: 1.5rem;
    }

    .legal-content h3 {
        font-size: 1.25rem;
    }

    .legal-content p,
    .legal-content li {
        font-size: var(--text-sm);
    }

    .legal-content a {
        word-break: break-all;
        hyphens: auto;
    }
}

/* === FOOTER === */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-16) 0 var(--spacing-6);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-4);
    font-size: var(--text-lg);
    font-weight: 600;
}

.footer-section p,
.footer-section a {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
}

.footer-section a {
    display: block;
    margin-bottom: var(--spacing-2);
    transition: color var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}

/* === ANIMATIONS === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .hero {
        min-height: 80vh;
        padding: calc(80px + var(--spacing-8)) var(--spacing-4) var(--spacing-8);
    }

    .hero-name {
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .hero-roles {
        font-size: var(--text-xl);
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .role-carousel {
        min-width: 150px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

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

    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    .stats-section {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    section {
        padding: var(--spacing-12) 0;
    }

    .theme-toggle {
        top: var(--spacing-4);
        right: var(--spacing-4);
    }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* === PRINT STYLES === */
@media print {
    .navbar,
    .footer,
    .hero-cta,
    .theme-toggle {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .project-card {
        page-break-inside: avoid;
    }
}

/* === PARTICLE BACKGROUND (SUBTLE) === */
.particle-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

/* Dark Mode - More Visible Particles */
[data-theme="dark"] #particles-canvas {
    opacity: 0.6;
}

.gradient-orbs {
    display: none;
}

/* ========================================
   CONTACT MODAL WITH NEURAL NETWORK
   Premium Design with Animated Background
   ======================================== */

/* === NEURAL NETWORK BUTTON === */
.contact-btn-animated {
    position: relative;
    overflow: hidden;
}

.neural-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
}

.btn-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* === MODAL BASE === */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms ease, visibility 300ms ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* === MODAL CONTAINER === */
.modal-container {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    background: var(--color-bg);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--color-border);
}

.modal.active .modal-container {
    transform: scale(1) translateY(0);
}

[data-theme="dark"] .modal-container {
    background: var(--color-bg-secondary);
    border-color: var(--color-bg-tertiary);
}

/* === MODAL HEADER === */
.modal-header {
    padding: var(--spacing-8);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(135deg, var(--color-primary-light), transparent);
}

.modal-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-2);
}

.modal-subtitle {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin: 0;
}

/* === MODAL CLOSE BUTTON === */
.modal-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-error);
    color: white;
    border-color: var(--color-error);
    transform: rotate(90deg);
}

/* === CONTACT OPTIONS === */
.contact-options {
    padding: var(--spacing-6);
    max-height: calc(85vh - 180px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* Custom Scrollbar */
.contact-options::-webkit-scrollbar {
    width: 8px;
}

.contact-options::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
}

.contact-options::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
}

.contact-options::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-hover);
}

/* === CONTACT OPTION CARD === */
.contact-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
    transition: left 500ms ease;
}

.contact-option:hover::before {
    left: 100%;
}

.contact-option:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .contact-option {
    background: var(--color-bg-tertiary);
}

/* === CONTACT ICONS === */
.contact-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--text-2xl);
    flex-shrink: 0;
    transition: all var(--transition);
}

.contact-option:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Icon Colors */
.email-icon {
    background: linear-gradient(135deg, #EA4335, #FBBC04);
    color: white;
}

.whatsapp-icon {
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: white;
}

.github-icon {
    background: linear-gradient(135deg, #24292e, #4078c0);
    color: white;
}

.x-icon {
    background: linear-gradient(135deg, #000000, #14171a);
    color: white;
}

.instagram-icon {
    background: linear-gradient(135deg, #F58529, #DD2A7B, #8134AF, #515BD4);
    color: white;
}

.facebook-icon {
    background: linear-gradient(135deg, #1877F2, #0A66C2);
    color: white;
}

.huggingface-icon {
    background: linear-gradient(135deg, #FFD21E, #FF9D0B);
    color: white;
}

/* === CONTACT INFO === */
.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 var(--spacing-1);
}

.contact-info p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* === CONTACT ARROW === */
.contact-arrow {
    color: var(--color-text-tertiary);
    font-size: var(--text-lg);
    transition: all var(--transition);
}

.contact-option:hover .contact-arrow {
    color: var(--color-primary);
    transform: translateX(4px);
}

/* === MOBILE RESPONSIVE === */
@media (max-width: 768px) {
    .modal-container {
        width: 95%;
        max-height: 90vh;
    }

    .modal-header {
        padding: var(--spacing-6);
    }

    .modal-title {
        font-size: var(--text-2xl);
    }

    .contact-options {
        padding: var(--spacing-4);
    }

    .contact-icon {
        width: 48px;
        height: 48px;
        font-size: var(--text-xl);
    }

    .contact-info h3 {
        font-size: var(--text-base);
    }

    .contact-info p {
        font-size: var(--text-xs);
    }
}

/* === ANIMATIONS === */
@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes neuralPulse {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

.neural-bg {
    animation: neuralPulse 3s ease-in-out infinite;
}