/* NeoPlan Beratung - Main Styles */

:root {
    --primary-color: #3182ce;
    --secondary-color: #4299e1;
    --accent-color: #63b3ed;
    --text-light: #ffffff;
    --text-dark: #1a202c;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-light: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 60px rgba(0, 0, 0, 0.3);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: #0f172a;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
.bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
}

/* Logo Watermark */
.logo-watermark {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0.04;
    width: 900px;
    height: auto;
    pointer-events: none;
    transition: all 0.5s ease;
    filter: blur(0.5px);
}

.logo-watermark.enhanced {
    opacity: 0.06;
    transform: translate(-50%, -50%) scale(1.1);
    filter: blur(0px);
}

/* Floating Geometric Shapes */
.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    animation: float 20s infinite ease-in-out;
}

.shape:nth-child(1) {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 120px;
    height: 120px;
    background: var(--gradient-secondary);
    top: 60%;
    right: 15%;
    animation-delay: -5s;
}

.shape:nth-child(3) {
    width: 60px;
    height: 60px;
    background: var(--gradient-tertiary);
    bottom: 30%;
    left: 20%;
    animation-delay: -10s;
}

.shape:nth-child(4) {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    top: 10%;
    right: 30%;
    animation-delay: -15s;
}

.shape:nth-child(5) {
    width: 140px;
    height: 140px;
    background: var(--gradient-secondary);
    bottom: 10%;
    right: 40%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-30px) rotate(120deg); }
    66% { transform: translateY(20px) rotate(240deg); }
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 15px 0;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.main-nav.visible {
    transform: translateY(0);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    cursor: pointer;
}

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

/* Theme Toggle */
#theme-toggle {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 3000;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-light);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
}

#theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

/* Logo Header */
.logo-header {
    text-align: center;
    padding: 100px 0 60px;
    cursor: pointer;
}

.logo-header h1 {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
    margin-bottom: 10px;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 20px rgba(255, 255, 255, 0.2); }
    to { text-shadow: 0 0 30px rgba(255, 255, 255, 0.4), 0 0 40px rgba(59, 130, 246, 0.2); }
}

.logo-subtitle {
    font-size: 1.3rem;
    color: #94a3b8;
    font-weight: 300;
    letter-spacing: 2px;
}

/* Main Container */
.main-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

/* Section Layout */
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

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

.section.hidden {
    display: none;
}

/* Light Mode */
body.light-mode {
    background: #EBF8FF;
}

body.light-mode .bg-container {
    background: linear-gradient(135deg, #EBF8FF 0%, #e2e8f0 50%, #cbd5e1 100%);
}

body.light-mode .logo-header h1 {
    background: linear-gradient(135deg, #1e293b, #475569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-mode .logo-subtitle {
    color: #64748b;
}

body.light-mode #theme-toggle {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-dark);
}

body.light-mode .main-nav {
    background: rgba(235, 248, 255, 0.95);
}

body.light-mode .nav-logo {
    background: linear-gradient(135deg, #1e293b, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-mode .nav-menu a {
    color: var(--text-dark);
}