/* ---------------------------------- */
/*          DESIGN SYSTEM             */
/* ---------------------------------- */
:root {
    /* Color Palette */
    --primary: #059669; /* Emerald */
    --secondary: #6366f1; /* Electric Indigo */
    --accent: #f59e0b; /* Bernstein */
    --background: #f8fffe;
    --surface: #ffffff;
    --card: rgba(255, 255, 255, 0.7);
    --text: #0f172a;
    --muted: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --gradient-hero: linear-gradient(135deg, #ecfdf5 0%, #ede9fe 100%);
    --gradient-badge: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);

    /* Typography */
    --font-headings: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* Spacing & Sizing */
    --container-width: 1140px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* UI Elements */
    --border-radius-card: 16px;
    --border-radius-btn: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ---------------------------------- */
/*          GLOBAL STYLES             */
/* ---------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Header height */
}

body {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: var(--font-headings);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 3rem; line-height: 1.1; }
h2 { font-size: 2rem; line-height: 1.2; }
h3 { font-size: 1.375rem; line-height: 1.3; }

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

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

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

ul { list-style: none; }

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

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

.section-bg {
    background-color: var(--surface);
}

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

.section-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--muted);
}

/* ---------------------------------- */
/*       REUSABLE COMPONENTS          */
/* ---------------------------------- */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-headings);
    font-weight: 600;
    border-radius: var(--border-radius-btn);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--text);
}

.btn-primary:hover {
    background-color: #d97706; /* Darker accent */
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: var(--surface);
}

.glass-card {
    background: var(--card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-card);
    box-shadow: var(--shadow);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.glass-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 99px;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    background: var(--gradient-badge);
}

/* ---------------------------------- */
/*              HEADER                */
/* ---------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-headings);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text);
}
.logo svg { color: var(--primary); }
.logo:hover { color: var(--secondary); }

.main-nav ul {
    display: flex;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: var(--muted);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-sm) 0;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-badge);
    transition: width 0.3s ease;
}
.main-nav a:hover { color: var(--text); }
.main-nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: var(--spacing-md); }
.hamburger-menu { display: none; background: none; border: none; cursor: pointer; }

/* ---------------------------------- */
/*           SECTION STYLES           */
/* ---------------------------------- */

/* HERO (#1) */
.hero-section {
    background: var(--gradient-hero);
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
}
.hero-layout { display: grid; grid-template-columns: 3fr 2fr; align-items: center; gap: var(--spacing-xl); }
.hero-content h1 { margin-bottom: var(--spacing-md); }
.hero-content p { font-size: 1.125rem; color: var(--muted); margin-bottom: var(--spacing-lg); }
.hero-buttons { display: flex; gap: var(--spacing-md); margin-bottom: var(--spacing-lg); }
.trust-badges { display: flex; gap: var(--spacing-md); color: var(--muted); font-size: 0.9rem; }
.hero-image img { border-radius: var(--border-radius-card); box-shadow: var(--shadow); }

/* WARUM (#2) */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-xl); }
.stat-card { text-align: center; }
.stat-number { font-family: var(--font-headings); font-size: 3.5rem; font-weight: 700; color: var(--primary); display: block; line-height: 1; }
.stat-description { color: var(--muted); margin-top: var(--spacing-sm); }
.text-columns { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); max-width: 900px; margin: 0 auto; }
.text-columns p { text-align: justify; }

/* 50-30-20 (#3) */
.three-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--spacing-lg); }
.rule-card { background: var(--surface); border-radius: var(--border-radius-card); padding: var(--spacing-lg); text-align: center; box-shadow: var(--shadow); transition: var(--transition); }
.rule-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.card-icon { margin: 0 auto var(--spacing-md); width: 64px; height: 64px; display: flex; align-items: center; justify-content: center; border-radius: 50%; }
.card-icon.needs { background-color: #ecfdf5; color: var(--primary); }
.card-icon.wants { background-color: #ede9fe; color: var(--secondary); }
.card-icon.savings { background-color: #fffbeb; color: var(--accent); }
.rule-card h3 { margin-bottom: var(--spacing-sm); }
.rule-card p { color: var(--muted); margin-bottom: var(--spacing-md); }
.tags { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--spacing-sm); }
.tags span { background: var(--background); padding: var(--spacing-xs) var(--spacing-sm); border-radius: 6px; font-size: 0.85rem; }

/* BUDGETRECHNER (#4) */
.calculator-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); align-items: flex-start; }
.form-group { margin-bottom: var(--spacing-md); }
.form-group label { display: block; margin-bottom: var(--spacing-sm); font-weight: 500; }
.form-group input { width: 100%; padding: 0.75rem; border: 1px solid #ccc; border-radius: var(--border-radius-btn); font-family: var(--font-body); }
.form-group-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
#results-container { min-height: 200px; }
.result-category { margin-bottom: var(--spacing-md); }
.result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--spacing-sm); font-weight: 500; }
.progress-bar { height: 12px; background: #e0e0e0; border-radius: 99px; overflow: hidden; }
.progress-bar-inner { height: 100%; border-radius: 99px; transition: width 0.5s ease-in-out; }
.progress-bar-inner.needs { background: var(--primary); }
.progress-bar-inner.wants { background: var(--secondary); }
.result-summary { margin-top: var(--spacing-lg); text-align: center; font-size: 1.25rem; }
.result-summary .amount { font-family: var(--font-headings); font-weight: 700; color: var(--success); }
.ki-hinweis { margin-top: var(--spacing-md); background: #ecfdf5; color: var(--primary); padding: var(--spacing-md); border-radius: var(--border-radius-btn); }

/* SPARTIPPS (#5) */
.tips-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.tip-card { background: var(--surface); border-radius: var(--border-radius-card); padding: var(--spacing-lg); box-shadow: var(--shadow); transition: var(--transition); }
.tip-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.tip-icon { color: var(--primary); margin-bottom: var(--spacing-md); }
.tip-card h3 { margin-bottom: var(--spacing-xs); }
.tip-card .badge { margin-bottom: var(--spacing-md); }
.banner { text-align: center; margin-top: var(--spacing-xl); padding: var(--spacing-md); background: var(--gradient-badge); color: white; border-radius: var(--border-radius-btn); font-family: var(--font-headings); font-size: 1.25rem; }

/* SPARAUTOMATISIERUNG (#6) */
.stepper { max-width: 700px; margin: 0 auto; }
.step { display: flex; gap: var(--spacing-lg); position: relative; padding-bottom: var(--spacing-xl); }
.step:not(:last-child)::before { content: ''; position: absolute; left: 32px; top: 80px; width: 2px; height: calc(100% - 64px); background: #e0e0e0; }
.step-number { font-size: 2rem; font-family: var(--font-headings); font-weight: 700; width: 64px; height: 64px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; border-radius: 50%; color: white; background: var(--gradient-badge); }
.step-content h3 { margin-bottom: var(--spacing-sm); }
.step-content p { color: var(--muted); }

/* KOSTENFALLEN (#7) */
.warning-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--spacing-lg); }
.warning-card { background: var(--surface); border-left: 5px solid var(--danger); border-radius: var(--border-radius-card); padding: var(--spacing-lg); box-shadow: var(--shadow); }
.warning-card h3 { color: var(--danger); margin-bottom: var(--spacing-sm); }

/* METHODEN (#8) */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-bottom: var(--spacing-xl); }
th, td { padding: var(--spacing-md); text-align: left; border-bottom: 1px solid #e0e0e0; }
thead { background: var(--background); }
th { font-family: var(--font-headings); }
.recommendation-box { background: var(--gradient-hero); padding: var(--spacing-lg); }

/* KI-TOOLS (#9) */
.feature-card-img { border-radius: var(--border-radius-btn); margin-bottom: var(--spacing-md); aspect-ratio: 16/9; object-fit: cover; }
.feature-card h3 { margin-bottom: var(--spacing-sm); }

/* SPARZIELE (#10) */
.timeline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); }
.timeline-card { background: var(--surface); border-radius: var(--border-radius-card); padding: var(--spacing-lg); box-shadow: var(--shadow); position: relative; border-top: 4px solid var(--primary); }
.timeline-duration { font-size: 0.9rem; color: var(--muted); font-weight: 400; }

/* SCHULDEN (#11) */
.two-cards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.strategy-card { background: var(--surface); border-radius: var(--border-radius-card); padding: var(--spacing-lg); box-shadow: var(--shadow); }
.strategy-card h4 { color: var(--primary); margin-bottom: var(--spacing-sm); }
.warning-box { margin-top: var(--spacing-xl); padding: var(--spacing-lg); background: #fffbeb; border-left: 5px solid var(--accent); border-radius: var(--border-radius-btn); }

/* LEBENSPHASEN (#12) */
.phases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--spacing-lg); }
.phase-card { background: var(--surface); border-radius: var(--border-radius-card); padding: var(--spacing-lg); box-shadow: var(--shadow); transition: var(--transition); position: relative; }
.phase-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.phase-badge { position: absolute; top: var(--spacing-md); right: var(--spacing-md); background: var(--gradient-badge); color: white; padding: var(--spacing-xs) var(--spacing-sm); border-radius: 99px; font-size: 0.9rem; font-weight: 700; }
.phase-card h3 { margin-bottom: var(--spacing-sm); }

/* FAQ (#13) */
.accordion { max-width: 800px; margin: 0 auto; }
.accordion-item { border-bottom: 1px solid #e0e0e0; }
.accordion-header { width: 100%; background: none; border: none; text-align: left; padding: var(--spacing-md) 0; font-size: 1.1rem; font-weight: 600; font-family: var(--font-headings); cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.accordion-icon { transition: transform 0.3s ease; color: var(--primary); }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; }
.accordion-content p { padding: 0 0 var(--spacing-md) 0; color: var(--muted); }
.accordion-item.active .accordion-icon { transform: rotate(180deg); }
.accordion-item.active .accordion-content { max-height: 300px; }

/* KONTAKT (#14) */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); align-items: flex-start; }
.contact-info ul { margin: var(--spacing-lg) 0; }
.contact-info li { margin-bottom: var(--spacing-sm); }
.map-container { border-radius: var(--border-radius-card); overflow: hidden; }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
.full-width { grid-column: 1 / -1; }
.form-group select, .form-group textarea { width: 100%; padding: 0.75rem; border: 1px solid #ccc; border-radius: var(--border-radius-btn); font-family: var(--font-body); background-color: white; }
.form-group-checkbox { display: flex; align-items: center; gap: var(--spacing-sm); }
.form-group-checkbox input { width: auto; }
.form-group-checkbox label { margin: 0; }

/* ---------------------------------- */
/*              FOOTER                */
/* ---------------------------------- */
.site-footer { background: var(--text); color: #e0e0e0; padding-top: var(--spacing-xl); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.footer-col h4 { color: var(--surface); margin-bottom: var(--spacing-md); }
.footer-col a { color: var(--muted); }
.footer-col a:hover { color: var(--surface); }
.footer-col li { margin-bottom: var(--spacing-sm); }
.footer-bottom { border-top: 1px solid #334155; padding: var(--spacing-md) 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 0.9rem; color: var(--muted); }

/* ---------------------------------- */
/*          COOKIE BANNER             */
/* ---------------------------------- */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--text);
    color: white;
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.5s ease-in-out;
}
.cookie-banner.show {
    transform: translateY(0);
}
.cookie-banner p { margin: 0; }
.cookie-banner a { color: var(--accent); }
.cookie-buttons { display: flex; gap: var(--spacing-md); }

/* ---------------------------------- */
/*          RESPONSIVENESS            */
/* ---------------------------------- */

@media (max-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }

    .main-nav { display: none; }
    .hamburger-menu { display: block; }
    
    .site-header.nav-open .main-nav {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        box-shadow: var(--shadow);
    }
    .site-header.nav-open .main-nav ul {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
    }
     .site-header.nav-open .main-nav li {
        border-bottom: 1px solid #eee;
    }
     .site-header.nav-open .main-nav a {
        display: block;
        padding: var(--spacing-md);
    }

    .hero-layout { grid-template-columns: 1fr; text-align: center; }
    .hero-image { order: -1; margin-bottom: var(--spacing-lg); }
    .hero-buttons, .trust-badges { justify-content: center; }
    
    .stats-grid, .tips-grid, .timeline-grid { grid-template-columns: repeat(2, 1fr); }
    .calculator-layout, .contact-layout, .two-cards-grid { grid-template-columns: 1fr; }
    .text-columns { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    :root {
        --spacing-xxl: 4rem;
        --spacing-xl: 3rem;
    }
    h1 { font-size: 2rem; }
    
    .stats-grid, .tips-grid, .three-cards-grid, .timeline-grid, .warning-cards-grid, .phases-grid { grid-template-columns: 1fr; }
    
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom .container { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    
    .cookie-banner { flex-direction: column; text-align: center; gap: var(--spacing-md); }
}