/* ==========================================
   BudgetKlar.de - Stylesheet
   Weiß + Türkis Design mit Scroll-Animationen
   ========================================== */

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

:root {
    /* Türkis Color Palette */
    --primary-color: #00BCD4;
    --primary-dark: #0097A7;
    --primary-light: #B2EBF2;
    --accent-color: #00E5FF;
    
    /* Grayscale */
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* Status Colors */
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #F44336;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    
    /* Spacing */
    --section-padding: 100px;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    color: var(--gray-900);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo i {
    font-size: 1.8rem;
}

.logo:hover {
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-fast);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-normal);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
}

.hero-bg-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.15;
    background-image: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 50px,
            var(--primary-light) 50px,
            var(--primary-light) 51px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 50px,
            var(--primary-light) 50px,
            var(--primary-light) 51px
        );
    pointer-events: none;
}

.hero-bg-line::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 200px;
    transform: translateY(-50%);
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 200"><path d="M 0 100 Q 300 20 600 100 T 1200 100" fill="none" stroke="%2300BCD4" stroke-width="2" opacity="0.3"/></svg>') no-repeat center;
    background-size: 100% auto;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--gray-900);
}

.highlight {
    color: var(--primary-color);
    position: relative;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(0, 188, 212, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 188, 212, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

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

/* Icon Grid */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.icon-item {
    position: relative;
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.icon-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.icon-item i {
    font-size: 3rem;
    color: var(--primary-color);
    transition: var(--transition-normal);
}

.icon-item:hover i {
    transform: scale(1.2);
}

.icon-item::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
}

.icon-item:hover::before {
    opacity: 1;
    bottom: -50px;
}

/* ==========================================
   Section Styles
   ========================================== */
section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    color: var(--gray-900);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* ==========================================
   Methode Section
   ========================================== */
.methode {
    background: var(--gray-50);
}

.methode-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-light);
    opacity: 0.3;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.step-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.step-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--gray-900);
}

.step-card p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ==========================================
   Dashboard Demo Section
   ========================================== */
.dashboard-demo {
    background: var(--white);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.stat-card {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.stat-icon.income {
    background: linear-gradient(135deg, var(--success), #66BB6A);
}

.stat-icon.expense {
    background: linear-gradient(135deg, var(--danger), #EF5350);
}

.stat-icon.savings {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.stat-info h4 {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 5px;
}

.stat-change {
    font-size: 0.875rem;
    font-weight: 600;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

.dashboard-charts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.chart-container {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-md);
}

.chart-container h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--gray-900);
}

/* ==========================================
   Rechner Section
   ========================================== */
.rechner {
    background: var(--gray-50);
}

.rechner-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.calculator-form {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.calculator-form h3,
.calculator-form h4 {
    margin-bottom: 20px;
    color: var(--gray-900);
}

.calculator-form h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.calculator-form h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--gray-200);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 10px;
}

.form-group label i {
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition-fast);
    font-family: var(--font-family);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
}

.calculator-results {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.calculator-results h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--gray-900);
}

.result-summary {
    background: var(--gray-50);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-300);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    font-weight: 600;
    color: var(--gray-700);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.result-chart {
    margin-bottom: 30px;
}

.recommendations {
    background: var(--primary-light);
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.recommendations h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 10px;
}

.recommendations ul {
    list-style: none;
    padding: 0;
}

.recommendations li {
    padding: 10px 0;
    color: var(--gray-700);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.recommendations li::before {
    content: '💡';
    font-size: 1.2rem;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
    background: var(--white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
    font-family: var(--font-family);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    transition: var(--transition-normal);
    color: var(--primary-color);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}

.footer-brand {
    text-align: center;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 15px;
    display: inline-flex;
}

.footer-brand p {
    color: var(--gray-400);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--gray-800);
    color: var(--gray-500);
}

/* ==========================================
   Animations
   ========================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

.delay-5 {
    transition-delay: 0.5s;
}

.delay-6 {
    transition-delay: 0.6s;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero-content,
    .rechner-content {
        grid-template-columns: 1fr;
    }
    
    .methode-steps,
    .dashboard-stats,
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 40px;
        gap: 20px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .icon-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    

}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .icon-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
}