/* GridTrace Landing Page Styles */
/* 100% Self-Hosted, DSGVO-konform */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Colors */
    --navy: #1e3a5f;
    --navy-light: #2d4a6f;
    --navy-dark: #0f172a;
    --orange: #f59e0b;
    --orange-light: #fbbf24;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', SFMono-Regular, Consolas, Liberation Mono, Menlo, monospace;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px -10px var(--orange);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

ul {
    list-style: none;
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-4) 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

.nav.scrolled {
    padding: var(--space-3) 0;
    box-shadow: var(--shadow-sm);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--navy);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-links {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

.nav-links a {
    color: var(--gray-500);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a:hover {
    color: var(--navy);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--orange);
    transition: width var(--transition-fast);
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 50%, var(--gray-50) 100%);
    overflow: hidden;
    padding: 120px 0;
}

/* Animated Background */
.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--navy), transparent);
    top: -200px;
    right: -200px;
    animation: float 20s infinite ease-in-out;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--orange), transparent);
    bottom: -150px;
    left: -150px;
    animation: float 15s infinite ease-in-out reverse;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--navy-light), transparent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 10s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(5deg); }
    66% { transform: translate(-20px, 20px) rotate(-5deg); }
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.5; }
}

/* Grid Pattern */
.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--gray-200) 1px, transparent 1px),
        linear-gradient(90deg, var(--gray-200) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--navy-dark);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--navy), var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--gray-500);
    max-width: 700px;
    margin: 0 auto var(--space-8);
    line-height: 1.7;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-group {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--navy-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

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

.btn-large {
    padding: var(--space-5) var(--space-10);
    font-size: 1.25rem;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
    margin-top: var(--space-10);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 1s forwards;
}

.trust-badges span {
    font-size: 0.875rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* Hero Mockup */
.hero-mockup {
    margin-top: var(--space-16);
    position: relative;
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 1s ease-out 0.8s forwards;
}

.mockup-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: 
        0 0 0 1px var(--gray-200),
        0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.mockup-dots {
    display: flex;
    gap: var(--space-2);
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--gray-300);
}

.mockup-dots span:first-child { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:last-child { background: #22c55e; }

.mockup-title {
    flex: 1;
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
    background: var(--white);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.mockup-content {
    display: flex;
    min-height: 400px;
}

.mockup-sidebar {
    width: 60px;
    background: var(--gray-50);
    border-right: 1px solid var(--gray-200);
    padding: var(--space-4) 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.mockup-nav-item {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--gray-200);
}

.mockup-nav-item.active {
    background: var(--orange);
}

.mockup-main {
    flex: 1;
    padding: var(--space-6);
}

.mockup-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.mockup-stat {
    height: 80px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.mockup-chart {
    height: 150px;
    background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    opacity: 0.1;
}

.mockup-table {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mockup-row {
    height: 40px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--gray-400);
    font-size: 0.75rem;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(12px); opacity: 0; }
}

/* ========================================
   Trust Bar
   ======================================== */
.trust-bar {
    padding: var(--space-12) 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
}

.trust-label {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
}

.trust-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.trust-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-300);
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-normal);
}

.trust-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    color: var(--navy);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: var(--space-24) 0;
    background: var(--gray-50);
}

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

.section-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(245, 158, 11, 0.1);
    color: var(--orange);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--navy-dark);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--navy), var(--orange));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.1), rgba(245, 158, 11, 0.1));
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--navy-dark);
    margin-bottom: var(--space-3);
}

.feature-card p {
    color: var(--gray-500);
    margin-bottom: var(--space-4);
    line-height: 1.6;
}

.feature-card ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.feature-card li {
    font-size: 0.875rem;
    color: var(--gray-600);
    padding-left: var(--space-6);
    position: relative;
}

.feature-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--orange);
    font-weight: 700;
}

/* ========================================
   Stats Section
   ======================================== */
.stats {
    padding: var(--space-20) 0;
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--white), var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 600;
    color: var(--orange);
}

.stat-label {
    margin-top: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    position: relative;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--navy-dark);
    margin-bottom: var(--space-4);
}

.cta p {
    font-size: 1.25rem;
    color: var(--gray-500);
    margin-bottom: var(--space-8);
}

.cta .cta-group {
    margin-bottom: var(--space-4);
}

.cta-note {
    font-size: 0.875rem;
    color: var(--gray-400);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--navy-dark);
    color: var(--white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--space-4);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--white);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--orange);
    transform: translateY(-2px);
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    margin-bottom: var(--space-2);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Scroll Animations
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .nav,
    .hero-bg,
    .scroll-indicator,
    .cta-group,
    .footer-social {
        display: none;
    }
    
    body {
        color: #000;
    }
    
    a {
        text-decoration: underline;
    }
}

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

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--navy);
    color: var(--white);
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}