/* ============================================
   SM Tech - Wärmepumpe & Solar Website
   Design: Technical Engineering Style
   Colors: Red (heat) + Blue (cool) gradient
   ============================================ */

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

:root {
    --primary: #dc2626;
    --primary-dark: #b91c1c;
    --primary-light: #fecaca;
    --secondary: #0ea5e9;
    --secondary-dark: #0284c7;
    --secondary-light: #bae6fd;
    --dark: #0f172a;
    --dark-700: #1e293b;
    --dark-600: #334155;
    --dark-500: #475569;
    --light: #f8fafc;
    --light-200: #e2e8f0;
    --light-300: #cbd5e1;
    --white: #ffffff;
    --font-heading: 'Barlow', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --radius: 8px;
    --radius-lg: 16px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

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

a:hover {
    color: var(--primary-dark);
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navigation --- */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: all var(--transition);
}

.main-nav.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.logo-sm {
    color: var(--primary);
}

.logo-tech {
    color: var(--white);
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links li a {
    color: var(--light-300);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius);
    transition: all var(--transition);
    text-decoration: none;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--white);
    background: rgba(255,255,255,0.1);
}

.nav-cta {
    background: var(--primary) !important;
    color: var(--white) !important;
    font-weight: 600 !important;
    padding: 10px 20px !important;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(220, 38, 38, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
    color: var(--white);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.3);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--dark);
    border-color: var(--white);
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1.05rem;
}

.btn-xl {
    padding: 18px 48px;
    font-size: 1.15rem;
}

.btn-block {
    width: 100%;
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-gradient {
    background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(26,10,10,0.85) 25%, rgba(10,26,46,0.85) 75%, rgba(15,23,42,0.85) 100%), url('../images/hero.png') center/cover no-repeat;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(220, 38, 38, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(14, 165, 233, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    background: rgba(220, 38, 38, 0.15);
    color: var(--primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 6px 16px;
    border-radius: 50px;
    border: 1px solid rgba(220, 38, 38, 0.3);
    margin-bottom: 24px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--light-300);
    margin-bottom: 40px;
    max-width: 600px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    padding: 24px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--light-300);
    margin-top: 4px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Sections --- */
.section {
    padding: 100px 0;
}

.section-light {
    background: var(--light);
}

.section-dark {
    background: var(--dark);
}

.section-gradient {
    background: linear-gradient(135deg, var(--dark) 0%, #1a0f0f 30%, #0f1a2e 70%, var(--dark) 100%);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header-light h2,
.section-header-light p {
    color: var(--white);
}

.section-header-light p {
    color: var(--light-300);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--dark-500);
    line-height: 1.7;
}

.section-cta {
    text-align: center;
    margin-top: 48px;
}

/* --- Cards --- */
.card-grid {
    display: grid;
    gap: 24px;
}

.card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--light-200);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon svg {
    width: 26px;
    height: 26px;
}

.card-icon-red {
    background: rgba(220, 38, 38, 0.1);
    color: var(--primary);
}

.card-icon-blue {
    background: rgba(14, 165, 233, 0.1);
    color: var(--secondary);
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.card p {
    font-size: 0.95rem;
    color: var(--dark-500);
    line-height: 1.7;
}

/* --- Comparison Cards --- */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.comparison-card {
    background: var(--dark-700);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.08);
    transition: all var(--transition);
}

.comparison-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.comparison-card-featured {
    border-color: var(--secondary);
    position: relative;
}

.comparison-header {
    padding: 28px;
    text-align: center;
    position: relative;
}

.comparison-header-air {
    background: linear-gradient(135deg, rgba(220,38,38,0.15), rgba(220,38,38,0.05));
}

.comparison-header-ground {
    background: linear-gradient(135deg, rgba(14,165,233,0.2), rgba(14,165,233,0.05));
}

.comparison-header-water {
    background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(14,165,233,0.05));
}

.comparison-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--white);
}

.comparison-icon svg {
    width: 28px;
    height: 28px;
}

.comparison-header h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.comparison-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--light-300);
    background: rgba(255,255,255,0.08);
    padding: 4px 12px;
    border-radius: 20px;
}

.badge-featured {
    background: rgba(14,165,233,0.2);
    color: var(--secondary);
}

.comparison-body {
    padding: 24px 28px;
}

.comparison-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.metric-label {
    color: var(--light-300);
    font-size: 0.9rem;
}

.metric-value {
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
}

.metric-highlight {
    color: var(--secondary);
}

.comparison-pros,
.comparison-cons {
    margin-top: 20px;
}

.comparison-pros h4,
.comparison-cons h4 {
    color: var(--light-300);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.comparison-pros ul li,
.comparison-cons ul li {
    color: var(--light-200);
    font-size: 0.9rem;
    padding: 4px 0 4px 20px;
    position: relative;
}

.comparison-pros ul li::before {
    content: '+';
    position: absolute;
    left: 0;
    color: #22c55e;
    font-weight: 700;
}

.comparison-cons ul li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.comparison-link {
    display: block;
    padding: 16px 28px;
    color: var(--secondary) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    transition: all var(--transition);
}

.comparison-link:hover {
    background: rgba(14,165,233,0.1);
    color: var(--secondary-light) !important;
}

/* --- Sizing / Dimensionierung --- */
.sizing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.sizing-step {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.step-number {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.93rem;
    color: var(--dark-500);
    line-height: 1.7;
}

.calculator-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--light-200);
    position: sticky;
    top: 100px;
}

.calculator-card h3 {
    font-size: 1.2rem;
    margin-bottom: 24px;
    text-align: center;
}

.calc-field {
    margin-bottom: 16px;
}

.calc-field label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--dark-600);
    margin-bottom: 6px;
}

.calc-field input,
.calc-field select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--light-200);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--dark);
    background: var(--light);
    transition: border-color var(--transition);
}

.calc-field input:focus,
.calc-field select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}

.calc-results {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid var(--light-200);
}

.calc-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.calc-label {
    font-size: 0.9rem;
    color: var(--dark-500);
}

.calc-value {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--dark);
}

.calc-value-highlight {
    color: var(--primary);
    font-size: 1.15rem;
}

.calc-cta {
    margin-top: 20px;
    color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.calc-cta:hover {
    background: var(--primary) !important;
    color: var(--white) !important;
}

/* --- Cost Table --- */
.cost-table-wrapper {
    overflow-x: auto;
    margin-bottom: 48px;
}

.cost-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.cost-table th {
    background: rgba(255,255,255,0.08);
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    text-align: left;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.cost-table td {
    color: var(--light-200);
    font-size: 0.93rem;
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.cost-table tr:hover td {
    background: rgba(255,255,255,0.03);
}

.cost-total td {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--white);
    background: rgba(14,165,233,0.1);
    border-top: 2px solid var(--secondary);
}

.table-note {
    font-size: 0.85rem;
    color: var(--light-300);
    margin-top: 12px;
    font-style: italic;
}

/* --- Subsidy Stack --- */
.subsidy-stack h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 24px;
    text-align: center;
}

.subsidy-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.subsidy-item {
    display: flex;
    gap: 16px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.08);
}

.subsidy-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.subsidy-item h4 {
    color: var(--white);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.subsidy-item p {
    color: var(--light-300);
    font-size: 0.9rem;
}

/* --- Facts Grid --- */
.facts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.fact-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--light-200);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.fact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.fact-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary, #0ea5e9);
    margin-bottom: 12px;
    line-height: 1;
}

.fact-card p {
    font-size: 0.93rem;
    color: var(--dark-500);
    line-height: 1.7;
}

/* --- Blog Grid --- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-card {
    background: var(--dark-700);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid rgba(255,255,255,0.08);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(14,165,233,0.3);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.blog-card-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--secondary);
    background: rgba(14,165,233,0.12);
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 16px;
    align-self: flex-start;
}

.blog-card h3 {
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card p {
    color: var(--light-300);
    font-size: 0.9rem;
    line-height: 1.6;
    flex-grow: 1;
}

.blog-card-meta {
    display: block;
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--dark-500);
    font-family: var(--font-heading);
}

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

.faq-item {
    border: 1px solid var(--light-200);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--white);
    transition: all var(--transition);
}

.faq-item:hover {
    border-color: var(--light-300);
}

.faq-item.active {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--dark);
    gap: 16px;
}

.faq-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--dark-500);
    transition: transform var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--secondary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.95rem;
    color: var(--dark-500);
    line-height: 1.8;
}

/* --- CTA Section --- */
.section-cta-block {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.section.section-cta {
    background: linear-gradient(135deg, var(--primary) 0%, #a91b1b 40%, var(--secondary-dark) 100%);
    padding: 80px 0;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--white);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* --- Footer --- */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--dark-500);
    font-size: 0.9rem;
    margin-top: 12px;
    line-height: 1.6;
}

.footer-links h4 {
    color: var(--white);
    font-size: 0.9rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    color: var(--dark-500);
    font-size: 0.9rem;
    transition: color var(--transition);
    text-decoration: none;
}

.footer-links ul li a:hover {
    color: var(--light-300);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: var(--dark-500);
    font-size: 0.85rem;
}

/* --- Blog Page Styles --- */
.blog-hero {
    background: var(--dark);
    padding: 120px 0 60px;
}

.blog-hero h1 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
}

.blog-hero p {
    color: var(--light-300);
    font-size: 1.1rem;
    max-width: 600px;
}

.blog-index-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-index-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--light-200);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.blog-index-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary);
}

.blog-index-card .blog-card-tag {
    color: var(--primary);
    background: rgba(220,38,38,0.08);
}

.blog-index-card h3 {
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--dark);
    line-height: 1.4;
}

.blog-index-card p {
    color: var(--dark-500);
    font-size: 0.9rem;
    line-height: 1.6;
    flex-grow: 1;
}

/* --- Blog Post Styles --- */
.post-header {
    background: var(--dark);
    padding: 120px 0 50px;
}

.post-breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.85rem;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.post-breadcrumb a {
    color: var(--light-300);
}

.post-breadcrumb span {
    color: var(--dark-500);
}

.post-header h1 {
    color: var(--white);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    margin-bottom: 16px;
    max-width: 800px;
}

.post-meta {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
    color: var(--light-300);
    flex-wrap: wrap;
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 24px;
}

.post-content h2 {
    font-size: 1.6rem;
    margin: 48px 0 20px;
    padding-top: 20px;
    border-top: 2px solid var(--light-200);
}

.post-content h2:first-of-type {
    border-top: none;
    margin-top: 0;
}

.post-content h3 {
    font-size: 1.25rem;
    margin: 32px 0 16px;
    color: var(--dark);
}

.post-content p {
    margin-bottom: 18px;
    color: var(--dark-600);
    line-height: 1.8;
}

.post-content ul,
.post-content ol {
    margin: 16px 0 24px 24px;
}

.post-content ul {
    list-style: disc;
}

.post-content ol {
    list-style: decimal;
}

.post-content li {
    margin-bottom: 8px;
    color: var(--dark-600);
    line-height: 1.7;
}

.post-content strong {
    color: var(--dark);
    font-weight: 600;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.93rem;
}

.post-content table th {
    background: var(--dark);
    color: var(--white);
    padding: 12px 16px;
    text-align: left;
    font-family: var(--font-heading);
    font-weight: 600;
}

.post-content table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--light-200);
}

.post-content table tr:nth-child(even) td {
    background: var(--light);
}

.info-box {
    background: rgba(14,165,233,0.08);
    border-left: 4px solid var(--secondary);
    padding: 20px 24px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 24px 0;
}

.info-box p {
    color: var(--dark);
    margin-bottom: 0;
}

.warning-box {
    background: rgba(220,38,38,0.06);
    border-left: 4px solid var(--primary);
    padding: 20px 24px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 24px 0;
}

.warning-box p {
    color: var(--dark);
    margin-bottom: 0;
}

.post-cta {
    background: linear-gradient(135deg, var(--dark), var(--dark-700));
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    margin-top: 48px;
}

.post-cta h3 {
    color: var(--white);
    margin-bottom: 12px;
}

.post-cta p {
    color: var(--light-300);
    margin-bottom: 24px;
}

.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 2px solid var(--light-200);
}

.post-nav a {
    padding: 16px 20px;
    background: var(--light);
    border-radius: var(--radius);
    color: var(--dark);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition);
    text-decoration: none;
}

.post-nav a:hover {
    background: var(--light-200);
    color: var(--dark);
}

.post-nav a span {
    display: block;
    font-size: 0.78rem;
    color: var(--dark-500);
    font-weight: 400;
    margin-bottom: 4px;
}

/* --- Page Styles (Wissen, Datenschutz, etc.) --- */
.page-hero {
    background: var(--dark);
    padding: 120px 0 50px;
}

.page-hero h1 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 16px;
}

.page-hero p {
    color: var(--light-300);
    font-size: 1.1rem;
    max-width: 600px;
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 24px;
}

.page-content h2 {
    font-size: 1.5rem;
    margin: 40px 0 16px;
}

.page-content h3 {
    font-size: 1.2rem;
    margin: 28px 0 12px;
}

.page-content p {
    margin-bottom: 16px;
    color: var(--dark-600);
    line-height: 1.8;
}

.page-content ul {
    list-style: disc;
    margin: 12px 0 20px 24px;
}

.page-content li {
    margin-bottom: 8px;
    color: var(--dark-600);
    line-height: 1.7;
}

.wissen-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 40px 0;
}

.wissen-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--light-200);
    transition: all var(--transition);
    text-decoration: none;
    display: block;
}

.wissen-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary);
}

.wissen-card h3 {
    font-size: 1.05rem;
    color: var(--dark);
    margin-bottom: 8px;
}

.wissen-card p {
    font-size: 0.9rem;
    color: var(--dark-500);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .card-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .facts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .blog-grid,
    .blog-index-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .subsidy-items {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid rgba(255,255,255,0.05);
        gap: 4px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li a {
        padding: 12px 16px;
        display: block;
    }

    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .hero-stat {
        flex-direction: row;
        align-items: center;
        gap: 12px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        text-align: center;
    }

    .section {
        padding: 60px 0;
    }

    .card-grid-3 {
        grid-template-columns: 1fr;
    }

    .sizing-grid {
        grid-template-columns: 1fr;
    }

    .sizing-calculator-preview {
        order: -1;
    }

    .calculator-card {
        position: static;
    }

    .facts-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid,
    .blog-index-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .post-nav {
        grid-template-columns: 1fr;
    }

    .wissen-grid {
        grid-template-columns: 1fr;
    }

    .cost-table {
        font-size: 0.85rem;
    }

    .cost-table th,
    .cost-table td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .btn-xl {
        padding: 14px 32px;
        font-size: 1rem;
    }
}


/* === Mobile Logo Size === */
@media (max-width: 768px) {
  .logo img, .nav-logo img, .navbar-brand img, .nav-brand img, .navbar__logo img {
    height: 36px !important;
  }
}