/* ==========================================================================
   1. DESIGN-THEMES (CSS-VARIABLEN)
   ========================================================================== */

/* Standard-Theme: Dark Cyber */
html[data-theme="dark"] {
    --bg-main: #0f172a;
    --bg-sidebar: rgba(30, 41, 59, 0.7);
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --border-color: rgba(255, 255, 255, 0.08);
    --sidebar-shadow: rgba(0, 0, 0, 0.5);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    --input-bg: #0f172a;
    --text-yes: #22c55e;
    --text-no: #ef4444;
}

/* Theme 2: Tech Mint */
html[data-theme="mint"] {
    --bg-main: #f0fdf4;
    --bg-sidebar: rgba(255, 255, 255, 0.8);
    --bg-card: #ffffff;
    --text-main: #166534;
    --text-muted: #4d7c0f;
    --accent: #22c55e;
    --accent-hover: #16a34a;
    --border-color: rgba(22, 101, 52, 0.1);
    --sidebar-shadow: rgba(22, 101, 52, 0.05);
    --card-shadow: 0 10px 30px rgba(22, 101, 52, 0.08);
    --input-bg: #f9fafb;
    --text-yes: #15803d;
    --text-no: #b91c1c;
}

/* Theme 3: Vibrant Sunset */
html[data-theme="sunset"] {
    --bg-main: #180814;
    --bg-sidebar: rgba(45, 15, 38, 0.7);
    --bg-card: #3b1331;
    --text-main: #fff1f2;
    --text-muted: #f43f5e;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --border-color: rgba(244, 63, 94, 0.15);
    --sidebar-shadow: rgba(0, 0, 0, 0.6);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    --input-bg: #180814;
    --text-yes: #10b981;
    --text-no: #f43f5e;
}

/* ==========================================================================
   2. GLOBALE STYLES
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    /* display: flex; <-- WURDE ENTFERNT: Dies hat den Footer zur Seite gedrückt! */
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Hauptinhalt-Bereich */
.main-content {
    margin-left: 260px;
    padding: 60px 40px 0; /* Padding unten entfernt für bündigen Footer */
    min-height: 100vh;
    display: flex;
    flex-direction: column; /* Zwingt Inhalte untereinander */
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content.expanded {
    margin-left: 70px;
}

/* Hero- & Header-Zonen für Unterseiten */
.hero-section, .page-section-header {
    max-width: 800px;
    margin: 0 auto 50px auto;
    text-align: center;
}

.hero-title, .page-title {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle, .page-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Animationen */
.animate-fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   3. SIDEBAR STYLES (GLASSMORPHISM)
   ========================================================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    background-color: var(--bg-sidebar);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--border-color);
    box-shadow: 10px 0 30px var(--sidebar-shadow);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar-header {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.00rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.toggle-btn:hover {
    background-color: var(--border-color);
}

.hamburger-bar {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-main);
}

.sidebar-nav {
    flex-grow: 1;
    padding: 24px 10px;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 14px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-main);
    background-color: var(--border-color);
}

.nav-link.active {
    border-left: 3px solid var(--accent);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.nav-icon {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px 14px;
    border-top: 1px solid var(--border-color);
    overflow: hidden;
}

.theme-switcher-container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-selector-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
}

.theme-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.theme-select {
    width: 100%;
    padding: 6px 8px;
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    cursor: pointer;
    outline: none;
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .theme-selector-wrapper {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 24px 0;
}

.sidebar.collapsed .toggle-btn {
    display: none;
}

.sidebar.collapsed:hover .toggle-btn {
    display: flex;
}

/* ==========================================================================
   4. PREISRECHNER STYLES (STARTSEITE)
   ========================================================================== */
.calculator-container {
    max-width: 840px;
    margin: 0 auto;
    width: 100%;
}

.calculator-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--card-shadow);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.card-intro {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.calc-group {
    margin-bottom: 28px;
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.95rem;
}

.badge {
    background-color: var(--border-color);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.calc-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.calc-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--accent-hover);
}

.checkbox-boxen-container {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 20px;
    margin-bottom: 35px;
}

.checkbox-item {
    padding: 14px 0;
}

.checkbox-item:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.border-top-item {
    border-top: 2px dashed var(--border-color);
    margin-top: 5px;
}

.custom-checkbox {
    display: flex;
    align-items: center;
    position: relative;
    cursor: pointer;
    user-select: none;
    font-size: 0.95rem;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    height: 20px;
    width: 20px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-right: 14px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-checkbox:hover input ~ .checkmark {
    border-color: var(--accent);
}

.custom-checkbox input:checked ~ .checkmark {
    background-color: var(--accent);
    border-color: var(--accent);
}

.checkmark:after {
    content: "\2713";
    color: white;
    font-size: 0.8rem;
    font-weight: 700;
    display: none;
}

.custom-checkbox input:checked ~ .checkmark:after {
    display: block;
}

.discount-badge {
    font-size: 0.75rem;
    font-weight: 700;
    background-color: rgba(34, 197, 94, 0.15);
    color: var(--text-yes);
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
}

.price-display-zone {
    text-align: center;
    background: linear-gradient(135deg, var(--border-color), transparent);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 25px;
}

.price-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-main);
}

.price-subtext {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.submit-calc-btn, .submit-contact-btn {
    width: 100%;
    padding: 16px;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
    transition: all 0.2s ease;
}

.submit-calc-btn:hover, .submit-contact-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* ==========================================================================
   5. ABLAUF-TIMELINE STYLES (ABLAUF.PHP)
   ========================================================================== */
.timeline-container {
    max-width: 750px;
    margin: 0 auto 50px auto;
    position: relative;
}

.timeline-step {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.step-number-box {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.step-number {
    font-weight: 700;
    color: var(--accent);
}

.step-content-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
}

.step-content-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.step-content-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.info-highlight-box, .feature-highlight-box {
    max-width: 750px;
    margin: 0 auto;
    background-color: rgba(56, 189, 248, 0.06);
    border: 1px dashed var(--accent);
    border-radius: 14px;
    padding: 30px;
    display: flex;
    gap: 20px;
}

.box-icon {
    font-size: 2rem;
}

.box-text h3 {
    font-size: 1.15rem;
    margin-bottom: 6px;
}

.box-text p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ==========================================================================
   6. UNTERSEITEN STRUCTURE & GRIDS (Bereinigt)
   ========================================================================== */
.page-section-header,
.pricing-info-grid,
.faq-container,
.story-layout-container,
.timeline-container,
.info-highlight-box,
.contact-container,
.legal-text-container {
    width: 100%;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-info-grid, .story-layout-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.info-card, .story-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 30px;
    box-shadow: var(--card-shadow);
}

.info-card-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.info-card h3, .story-card h2 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.info-card p, .story-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.section-heading {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 40px;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px 30px;
    margin-top: 30px;
    margin-bottom: 60px;
}

.faq-item {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 12px;
}

.faq-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-main);
    font-weight: 600;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.feature-highlight-box ul {
    list-style: none;
    margin-top: 15px;
}

.feature-highlight-box li {
    margin-bottom: 10px;
    padding-left: 24px;
    position: relative;
    color: var(--text-muted);
}

.feature-highlight-box li::before {
    content: "\2713"; /* Das ist der saubere Unicode für ein Häkchen (✓) */
    color: var(--accent);
    position: absolute;
    left: 0;
    font-weight: 700;
}

/* ==========================================================================
   7. KONTAKTSEITE STYLES (KONTAKT.PHP)
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.contact-form-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--card-shadow);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 8px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent);
}

.privacy-check {
    margin: 10px 0 25px 0;
}

.contact-summary-card {
    background-color: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: 16px;
    padding: 30px;
    height: fit-content;
}

.contact-summary-card h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.summary-list {
    list-style: none;
}

.summary-list li {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    padding: 8px 0;
}

.summary-list span {
    color: var(--text-muted);
}

.summary-divider {
    border-top: 1px solid var(--border-color);
    margin: 8px 0;
}

.text-yes { color: var(--text-yes); }
.text-no { color: var(--text-no); }

.summary-note {
    background-color: var(--input-bg);
    border-radius: 8px;
    padding: 15px;
    margin-top: 25px;
    font-size: 0.85rem;
    line-height: 1.5;
}

.legal-text-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--card-shadow);
}

.legal-text-container h2 {
    font-size: 1.4rem;
    margin: 30px 0 15px 0;
}

.legal-text-container h3 {
    font-size: 1.1rem;
    margin: 20px 0 10px 0;
}

.legal-text-container p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 15px;
}

/* ==========================================================================
   8. GLOBALER FOOTER (ZUSAMMENGEFÜHRT & BEREINIGT)
   ========================================================================== */
.main-footer {
    display: block;
    width: 100%;
    max-width: 1000px;
    margin: auto auto 0 auto; /* Schiebt den Footer im main-content zwingend nach unten */
    padding: 40px 0 20px 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
}

.footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--text-main);
}

/* ==========================================================================
   9. MOBILE RESPONSIVENESS
   ========================================================================== */
@media (max-width: 900px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title, .page-title {
        font-size: 2rem;
    }
    .calculator-card, .contact-form-card {
        padding: 24px;
    }
    .form-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .footer-nav a {
        margin: 0 10px;
    }
}