/* ============================================
   KAIA - Konrad AI Assistant
   Modern Landing Page Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - doubleSlash CI Colors */
    --primary: #00A5E1;           /* Markenfarbe Cyan */
    --primary-dark: #00759E;      /* Klickfarbe doubleSlash */
    --primary-light: #D7E9F4;     /* Akzentfarbe Hellblau */
    --secondary: #32547B;         /* Akzentfarbe Dunkelblau */
    --secondary-dark: #2A4566;    /* Dunklere Variante Dunkelblau */
    --accent: #FF9F00;            /* Akzentfarbe Orange */
    
    /* Status Colors - CI konform */
    --success: #B9D478;           /* Akzentfarbe Grün */
    --error: #C63328;             /* Akzentfarbe Rot */
    --warning: #FF9F00;           /* Orange als Warnfarbe */
    
    /* CI Grayscale */
    --gray-85: #484848;           /* 85% Grau */
    --gray-70: #6D6D6D;           /* 70% Grau */
    --gray-30: #C6C6C6;           /* 30% Grau */
    --gray-13: #EFEFEF;           /* 13% Grau - Container */
    --gray-5: #F9F9F9;            /* 5% Grau - Container */
    
    /* Background colors - Light Theme CI-konform */
    --bg-dark: #FFFFFF;           /* Weiß als Haupthintergrund */
    --bg-card: #F9F9F9;           /* 5% Grau - Container */
    --bg-card-hover: #EFEFEF;     /* 13% Grau */
    --bg-elevated: #FFFFFF;       /* Weiß */
    
    /* Text colors - CI Grautöne */
    --text-primary: #000000;      /* Schwarz - CI Schriftfarbe */
    --text-secondary: #484848;    /* 85% Grau */
    --text-muted: #6D6D6D;        /* 70% Grau */
    
    /* Borders & Effects - Light Theme */
    --border-color: rgba(0, 0, 0, 0.08);
    --border-glow: rgba(0, 165, 225, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(0, 165, 225, 0.15);
    
    /* Gradients - CI Farben Light */
    --gradient-primary: linear-gradient(135deg, #00A5E1 0%, #32547B 100%);
    --gradient-bg: linear-gradient(180deg, #FFFFFF 0%, #F9F9F9 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,1) 0%, rgba(249,249,249,1) 100%);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 64px;
}

/* Scroll offset for anchor links */
section[id] {
    scroll-margin-top: 64px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

.gradient-text {
    color: #00A5E1;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: #FFFFFF;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: var(--transition-normal);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 800;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.logo-icon {
    color: var(--primary);
    font-size: 1.75rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

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

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

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

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

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

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

.btn-login {
    padding: var(--space-xs) var(--space-md);
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    background: #00759E;
    color: #FFFFFF;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
    text-transform: none;
    letter-spacing: 0;
}

.btn-primary:hover {
    background: #005f80;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    background: #FFFFFF;
    color: #00759E;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    border: 2px solid #00759E;
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-secondary:hover {
    background: #00759E;
    color: #FFFFFF;
    border-color: #00759E;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    background: #FFFFFF;
    color: #00759E;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    border: 2px solid #00759E;
    transition: var(--transition-fast);
    cursor: pointer;
    width: 100%;
}

.btn-outline:hover {
    border-color: #00759E;
    background: #00759E;
    color: #FFFFFF;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    background: transparent;
    color: #00759E;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    border: 2px solid transparent;
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-ghost:hover {
    color: #005f80;
    text-decoration: underline;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.0625rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--gray-85);
    transition: var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    padding: calc(80px + var(--space-lg)) var(--space-lg) var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: float 15s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 30%;
    opacity: 0.1;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 165, 225, 0.1);
    border: 1px solid rgba(0, 165, 225, 0.35);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out;
}

.badge-icon {
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title-line {
    display: block;
}

.hero h1 {
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Chat Preview */
.hero-visual {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.chat-preview {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--gray-5);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.chat-dots {
    display: flex;
    gap: 6px;
}

.chat-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-30);
}

.chat-dots span:first-child { background: #FF5F57; }
.chat-dots span:nth-child(2) { background: #FEBC2E; }
.chat-dots span:last-child { background: #28C840; }

.chat-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.chat-messages {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-height: 200px;
}

.message {
    display: flex;
    gap: var(--space-sm);
}

.user-message {
    justify-content: flex-end;
}

.user-message .message-content {
    background: var(--primary);
    color: #FFFFFF;
    border-radius: 12px 12px 4px 12px;
    padding: var(--space-sm) var(--space-md);
    max-width: 80%;
    font-size: 0.9rem;
}

.ai-message {
    align-items: flex-start;
}

.message-avatar {
    width: 36px;
    height: 36px;
    background: var(--gray-13);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
}

.ai-message .message-content {
    background: var(--gray-13);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 4px var(--radius-md) var(--radius-md) var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    max-width: 85%;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.typing-indicator {
    display: inline-flex;
    gap: 4px;
    margin-right: var(--space-xs);
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    animation: typing 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

.chat-input {
    padding: var(--space-md);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--gray-5);
}

.file-chips {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.file-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(0, 165, 225, 0.1);
    border: 1px solid rgba(0, 165, 225, 0.35);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--primary);
}

.chat-input input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-main);
    outline: none;
    transition: var(--transition-fast);
}

.chat-input input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 165, 225, 0.15);
}

.chat-input input::placeholder {
    color: var(--text-muted);
}

.send-btn {
    display: none;
}

/* ============================================
   Section Styles
   ============================================ */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-lg) var(--space-xl);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 165, 225, 0.1);
    border: 1px solid rgba(0, 165, 225, 0.25);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: linear-gradient(180deg, #FFFFFF 0%, #F9F9F9 50%, #FFFFFF 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

/* Desktop: Upload and Sync side by side */
@media (min-width: 993px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.featured,
    .feature-card.sync-featured {
        grid-column: span 1;
        min-height: 400px;
    }
}

.feature-card {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 165, 225, 0.4);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card.featured {
    grid-column: span 1;
    grid-row: span 1;
    display: flex;
    flex-direction: column;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 165, 225, 0.12);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Feature Visual */
.feature-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--space-lg);
}

.upload-visual .upload-zone {
    background: var(--gray-5);
    border: 2px dashed var(--gray-30);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    width: 100%;
}

.upload-files {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.file-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 80px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.75rem;
    animation: bounce 2s ease-in-out infinite;
}

.file-icon.pdf { background: #FF6B6B; animation-delay: 0s; }
.file-icon.doc { background: #4DABF7; animation-delay: 0.2s; }
.file-icon.xls { background: #51CF66; animation-delay: 0.4s; }
.file-icon.img { background: #FF922B; animation-delay: 0.6s; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ============================================
   Sync Feature Card
   ============================================ */
.feature-card.sync-featured {
    grid-column: span 1;
    background: linear-gradient(135deg, #FFFFFF 0%, #F9FCFF 100%);
    border: 1px solid rgba(0, 165, 225, 0.15);
}

.sync-icon {
    background: linear-gradient(135deg, rgba(0, 165, 225, 0.15) 0%, rgba(50, 84, 123, 0.15) 100%);
}

.sync-visual {
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.sync-sources {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.sync-source {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-normal);
}

.sync-source:hover {
    transform: translateY(-4px);
}

.sync-source-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.sync-source-icon.local {
    background: linear-gradient(135deg, #FFE0B2 0%, #FFCC80 100%);
    color: #E65100;
    border: 2px solid #FFB74D;
}

.sync-source-icon.cloud {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    color: #1565C0;
    border: 2px solid #64B5F6;
}

.sync-source:hover .sync-source-icon {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.sync-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.sync-arrow {
    color: var(--primary);
    opacity: 0.6;
    animation: syncArrow 2s ease-in-out infinite;
}

.sync-arrow.reverse {
    animation: syncArrowReverse 2s ease-in-out infinite;
    animation-delay: 1s;
}

@keyframes syncArrow {
    0%, 100% { transform: translateX(0); opacity: 0.4; }
    50% { transform: translateX(4px); opacity: 1; }
}

@keyframes syncArrowReverse {
    0%, 100% { transform: translateX(0); opacity: 0.4; }
    50% { transform: translateX(-4px); opacity: 1; }
}

.sync-hub {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    color: #FFFFFF;
    box-shadow: 0 8px 32px rgba(0, 165, 225, 0.35);
}

.sync-hub-icon {
    font-size: 1.75rem;
}

.sync-hub-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.sync-pulse {
    position: absolute;
    inset: -8px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: syncPulse 2s ease-out infinite;
}

@keyframes syncPulse {
    0% { transform: scale(0.9); opacity: 0.8; }
    100% { transform: scale(1.3); opacity: 0; }
}

.sync-bfm {
    display: flex;
    justify-content: center;
}

.bfm-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(0, 117, 158, 0.08) 0%, rgba(0, 165, 225, 0.08) 100%);
    border: 1px solid rgba(0, 165, 225, 0.25);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    cursor: pointer;
}

.bfm-badge:hover {
    background: linear-gradient(135deg, rgba(0, 117, 158, 0.15) 0%, rgba(0, 165, 225, 0.15) 100%);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 165, 225, 0.15);
    transform: translateY(-2px);
}

.bfm-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-sm);
    color: #FFFFFF;
}

.bfm-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.bfm-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.bfm-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.bfm-arrow {
    color: var(--primary);
    transition: var(--transition-fast);
}

.bfm-badge:hover .bfm-arrow {
    transform: translate(2px, -2px);
}

/* Responsive für Sync Feature */
@media (max-width: 1200px) {
    .feature-card.sync-featured {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .feature-card.sync-featured {
        grid-column: span 1;
    }
    
    .sync-sources {
        gap: var(--space-sm);
    }
    
    .sync-source-icon {
        width: 52px;
        height: 52px;
    }
    
    .sync-hub {
        width: 64px;
        height: 64px;
    }
    
    .sync-hub-icon {
        font-size: 1.25rem;
    }
    
    .bfm-badge {
        flex-direction: column;
        text-align: center;
        padding: var(--space-md);
    }
    
    .bfm-arrow {
        display: none;
    }
}

/* ============================================
   How it Works Section
   ============================================ */
.how-it-works {
    position: relative;
    overflow: hidden;
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.step {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 320px;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.step:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.step-content h3 {
    margin-bottom: var(--space-xs);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.step-visual {
    margin-top: var(--space-lg);
}

.upload-circle,
.process-circle,
.chat-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 165, 225, 0.12);
    border: 2px solid var(--primary);
    border-radius: 50%;
    color: var(--primary);
}

.process-circle {
    animation: rotate 8s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.step-connector {
    display: flex;
    align-items: center;
}

/* ============================================
   Use Cases Section
   ============================================ */
.usecases {
    background: var(--gray-5);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.usecase-card {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.usecase-card:hover {
    transform: translateY(-4px);
    border-color: var(--secondary);
    box-shadow: 0 0 40px rgba(50, 84, 123, 0.25);
}

.usecase-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.usecase-card h3 {
    margin-bottom: var(--space-xs);
}

.usecase-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    position: relative;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    align-items: stretch;
}

.pricing-card {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
    position: relative;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: scale(1.02);
}

.pricing-card.popular:hover {
    transform: scale(1.02) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-lg);
}

.pricing-header h3 {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-muted);
}

.amount {
    font-size: 3.5rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.period {
    font-size: 1rem;
    color: var(--text-muted);
}

.pricing-features {
    flex: 1;
    margin-bottom: var(--space-lg);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
}

.check {
    color: var(--primary);
    font-weight: 700;
}

.pricing-card .btn-primary,
.pricing-card .btn-outline {
    margin-top: auto;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    position: relative;
    overflow: hidden;
    background: var(--gray-13);
}

.cta-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.cta-orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    opacity: 0.15;
    top: -200px;
    left: -100px;
}

.cta-orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    opacity: 0.15;
    bottom: -150px;
    right: -100px;
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: var(--space-2xl) 0;
}

.cta-content h2 {
    margin-bottom: var(--space-md);
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: #FFFFFF;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg) var(--space-lg);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
}

.footer-brand p {
    color: var(--text-secondary);
    margin: var(--space-md) 0;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-5);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.footer-column h4 {
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

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

.footer-column a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.featured,
    .feature-card.sync-featured {
        grid-column: span 1;
        min-height: auto;
    }
}

@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-xl);
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .pricing-grid,
    .usecases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .pricing-card.popular:hover {
        transform: translateY(-4px);
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        transform: rotate(90deg);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .features-grid,
    .pricing-grid,
    .usecases-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card.featured {
        grid-column: span 1;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .stat-divider {
        display: none;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }
    
    .section-container {
        padding: var(--space-xl) var(--space-sm);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Coming Soon Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    padding: var(--space-md);
}

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

.modal-content {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-xl);
    max-width: 420px;
    width: 100%;
    text-align: center;
    position: relative;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.15),
        0 0 80px rgba(0, 165, 225, 0.1);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-5);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    border-color: var(--primary);
    background: rgba(0, 165, 225, 0.12);
}

.modal-icon {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon-diamond {
    font-size: 3rem;
    color: var(--primary);
    z-index: 1;
    animation: modalPulse 2s ease-in-out infinite;
}

@keyframes modalPulse {
    0%, 100% { 
        transform: scale(1);
        filter: drop-shadow(0 0 10px rgba(0, 165, 225, 0.5));
    }
    50% { 
        transform: scale(1.1);
        filter: drop-shadow(0 0 25px rgba(0, 165, 225, 0.8));
    }
}

.modal-icon-ring {
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-radius: 50%;
    background: 
        linear-gradient(#FFFFFF, #FFFFFF) padding-box,
        var(--gradient-primary) border-box;
    animation: modalRingSpin 8s linear infinite;
}

@keyframes modalRingSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.modal-title {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.modal-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.modal-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: rgba(50, 84, 123, 0.15);
    border: 1px solid rgba(50, 84, 123, 0.35);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-light);
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: badgePulse 1.5s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { 
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(0, 165, 225, 0.5);
    }
    50% { 
        opacity: 0.6;
        box-shadow: 0 0 0 6px rgba(0, 165, 225, 0);
    }
}

@media (max-width: 480px) {
    .modal-content {
        padding: var(--space-xl) var(--space-md);
    }
    
    .modal-icon {
        width: 80px;
        height: 80px;
    }
    
    .modal-icon-diamond {
        font-size: 2.5rem;
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
}