/* ============================================
   PRISTINE SHIELD — Design System
   tsmondo.de / TSMONDO IT-Security
   Light-first with Dark Mode Toggle
   ============================================ */

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

/* --- Design Tokens: LIGHT (default) --- */
:root {
    --bg: #f8f9fa;
    --bg-card: rgba(255,255,255,0.7);
    --text: #191c1d;
    --text-muted: #3d494d;
    --text-sub: #566066;
    --primary: #006399;
    --primary-light: #1874ad;
    --primary-dark: #004e7a;
    --primary-container: #58acee;
    --border: rgba(188,201,206,0.45);
    --surface: #ffffff;
    --nav-bg: rgba(255,255,255,0.8);
    --glass: rgba(255,255,255,0.82);
    --glass-border: rgba(0,99,153,0.2);
    --glow: rgba(0,99,153,0.1);
    --glow-strong: rgba(0,99,153,0.2);
    --grid-color: rgba(188,201,206,0.08);
    --accent: #0a7c5a;
    --danger: #c41e3a;
    --secondary: #bf4400;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-glow: 0 4px 20px rgba(0,99,153,0.12);
    --radius: 0.375rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --blur: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --hero-gradient-start: #e8edf5;
    --hero-gradient-end: #006399;
    --btn-primary-text: #ffffff;
    --form-bg: rgba(248,249,250,0.8);
    --footer-bg: rgba(240,242,245,0.95);
    --elevated-bg: #f0f2f5;
    --nav-cta-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: rgba(188,201,206,0.45);
    --input-text: #191c1d;
    --logo-filter: none;
}

/* --- Design Tokens: DARK --- */
[data-theme="dark"] {
    --bg: #0a1628;
    --bg-card: rgba(15,25,45,0.7);
    --text: #e8edf5;
    --text-muted: #b0c4d8;
    --text-sub: #8899aa;
    --primary: #00b4d8;
    --primary-light: #4cd6fb;
    --primary-dark: #0096c7;
    --primary-container: #0077b6;
    --border: rgba(0,180,216,0.15);
    --surface: #0f1929;
    --nav-bg: rgba(10,22,40,0.85);
    --glass: rgba(12, 29, 53, 0.40);
    --glass-border: rgba(0, 180, 216, 0.12);
    --glow: rgba(0, 180, 216, 0.25);
    --glow-strong: rgba(0, 180, 216, 0.45);
    --grid-color: rgba(30, 58, 95, 0.05);
    --accent: #06d6a0;
    --danger: #ef476f;
    --secondary: #f97316;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow: 0 4px 12px rgba(0,0,0,0.35);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.45);
    --shadow-glow: 0 0 20px rgba(0,180,216,0.25);
    --hero-gradient-start: #e8edf5;
    --hero-gradient-end: #4cd6fb;
    --btn-primary-text: #071325;
    --form-bg: rgba(7, 19, 37, 0.6);
    --footer-bg: rgba(4, 10, 20, 0.95);
    --elevated-bg: #0c1d35;
    --nav-cta-text: #071325;
    --input-bg: #0f1929;
    --input-border: rgba(0,180,216,0.15);
    --input-text: #e8edf5;
    --logo-filter: brightness(0) invert(1);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Inter Fallback', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s ease, color 0.3s ease;
}

/* --- Atmospheric Background --- */
body::before {
    content: '';
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: -2;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,99,153,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0,99,153,0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(10,124,90,0.02) 0%, transparent 50%);
    pointer-events: none;
    transition: background 0.3s ease;
}
[data-theme="dark"] body::before {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,180,216,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0,180,216,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(6,214,160,0.03) 0%, transparent 50%);
}

/* Grid Overlay */
body::after {
    content: '';
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: -1;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'Space Grotesk Fallback', sans-serif;
    font-weight: 600;
    color: var(--text);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2.5rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.875rem; margin-bottom: 1rem; }
h4 { font-size: 1.5rem; margin-bottom: 0.875rem; }

p {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-sub);
}

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

strong { color: var(--text); }

/* --- Glass Card (core component) --- */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
}
.glass-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

/* --- Buttons --- */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--btn-primary-text);
    box-shadow: 0 2px 16px var(--glow);
}
.btn-primary:hover {
    box-shadow: 0 4px 24px var(--glow-strong);
    transform: translateY(-2px);
    color: var(--btn-primary-text);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--btn-primary-text);
}
.btn-secondary:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--surface);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.hero .btn-outline,
.page-header .btn-outline,
.cta-section .btn-outline {
    border-color: var(--primary) !important;
    color: var(--primary) !important;
    background: transparent !important;
}
.hero .btn-outline:hover,
.page-header .btn-outline:hover,
.cta-section .btn-outline:hover {
    background: var(--primary) !important;
    color: var(--btn-primary-text) !important;
}
[data-theme="dark"] .hero .btn-outline,
[data-theme="dark"] .page-header .btn-outline,
[data-theme="dark"] .cta-section .btn-outline {
    border-color: #ffffff !important;
    color: #ffffff !important;
}
[data-theme="dark"] .hero .btn-outline:hover,
[data-theme="dark"] .page-header .btn-outline:hover,
[data-theme="dark"] .cta-section .btn-outline:hover {
    background: #ffffff !important;
    color: var(--bg) !important;
}

/* --- Header --- */
.header {
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text);
}

.header-left img {
    height: 38px; width: 38px;
    object-fit: contain;
    filter: var(--logo-filter);
    transition: filter 0.3s ease;
}

.logo-text {
    font-family: 'Space Grotesk', 'Space Grotesk Fallback', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text);
}
.logo-text span {
    color: var(--text-sub);
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* --- Navigation --- */
nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}
nav > a {
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition);
}
nav > a:hover { color: var(--text); }

.nav-dropdown { position: relative; }
.nav-dropdown > a {
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition);
}
.nav-dropdown > a:hover { color: var(--primary); }

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: 0.5rem 0;
    padding-top: calc(0.5rem + 12px);
    margin-top: 0;
    z-index: 1001;
}
.nav-dropdown-menu::before {
    content: '';
    position: absolute;
    top: -2px; left: 0; right: 0;
    height: 14px;
    background: transparent;
}
.nav-dropdown-menu a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--text-muted);
    transition: all var(--transition);
}
.nav-dropdown-menu a:hover {
    color: var(--primary);
    padding-left: 1.5rem;
    background: rgba(0,99,153,0.05);
}
[data-theme="dark"] .nav-dropdown-menu a:hover {
    background: rgba(0,180,216,0.05);
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.nav-cta {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--nav-cta-text) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
}
.nav-cta:hover {
    box-shadow: 0 2px 16px var(--glow);
    color: var(--nav-cta-text) !important;
}

/* --- Hero Section --- */
.hero {
    background: transparent;
    color: var(--text);
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.hero h1 {
    color: var(--text);
    font-size: 2.75rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--hero-gradient-start) 0%, var(--hero-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
/* Light mode: use solid color for hero h1 */
:root:not([data-theme="dark"]) .hero h1,
html:not([data-theme="dark"]) .hero h1 {
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: var(--text);
    background-clip: unset;
    color: var(--text);
}
[data-theme="dark"] .hero h1 {
    background: linear-gradient(135deg, #e8edf5 0%, #4cd6fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-sub);
}

/* --- Page Header --- */
.page-header {
    background: var(--surface);
    color: var(--text);
    padding: 4rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.page-header > * {
    position: relative;
    z-index: 1;
}
[data-theme="dark"] .page-header {
    background: linear-gradient(135deg, rgba(7,19,37,0.9) 0%, rgba(12,29,53,0.9) 100%);
}
.page-header h1 {
    color: var(--text);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
[data-theme="dark"] .page-header h1 {
    background: linear-gradient(135deg, #e8edf5 0%, #4cd6fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.page-header p {
    font-size: 1.15rem;
    color: var(--text-sub);
    max-width: 700px;
    margin: 0 auto;
}

/* --- Container & Layout --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 4rem 2rem; }

.grid { display: grid; gap: 2rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* --- Card (glass) --- */
.card {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr auto;
}
.card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.card-header-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.card-icon {
    font-size: 1.25rem;
    width: 40px; height: 40px; min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(0, 99, 153, 0.12);
    border: 1px solid rgba(0, 99, 153, 0.25);
    margin-bottom: 0;
    flex-shrink: 0;
}
[data-theme="dark"] .card-icon {
    background: rgba(0, 180, 216, 0.15);
    border: 1px solid rgba(0, 180, 216, 0.25);
}

.card h3, .card h4 { margin-bottom: 0; color: var(--text); }
.card p { color: var(--text-sub); margin-bottom: 1.5rem; font-size: 0.95rem; }
.card a { font-weight: 600; display: inline-flex; align-items: center; gap: 0.5rem; }

/* --- KPI Kachel --- */
.kpi-tile {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    transition: all var(--transition);
}
.kpi-tile:hover {
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}
.kpi-value {
    font-family: 'Space Grotesk', 'Space Grotesk Fallback', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}
[data-theme="dark"] .kpi-value {
    text-shadow: 0 0 20px var(--glow);
}
.kpi-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* --- Testimonial Blockquote --- */
.sl-blockquote {
    margin: 2rem 0;
    padding: 1.75rem 2rem;
    background: var(--glass);
    backdrop-filter: blur(16px);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    font-style: italic;
    color: var(--text-sub);
    position: relative;
}
.sl-blockquote::before {
    content: '\201C';
    position: absolute;
    top: -0.25rem;
    left: 0.75rem;
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.3;
    font-style: normal;
    line-height: 1;
}
.sl-blockquote cite {
    display: block;
    margin-top: 1rem;
    font-style: normal;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Atmospheric Section --- */
.sl-section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.sl-section-alt {
    background: var(--elevated-bg);
    backdrop-filter: blur(8px);
    padding: 4rem 2rem;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
}
[data-theme="dark"] .sl-section-alt {
    background: rgba(12, 29, 53, 0.5);
}
.sl-section-alt > h2,
.sl-section-alt > p,
.sl-section-alt > .sl-inner {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.sl-inner { max-width: 1200px; margin: 0 auto; }

/* --- Legal Content (Datenschutz, Impressum, AGB) --- */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}
.legal-content h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}
.legal-content p {
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 1rem;
}
.legal-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.legal-content ul, .legal-content ol {
    margin: 1rem 0 1rem 1.5rem;
    color: var(--text-muted);
}
.legal-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}
.legal-content strong { color: var(--text); }

/* --- Referenz Case Study Layout --- */
.ref-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}
.ref-meta-item {
    background: var(--glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
}
.ref-meta-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.ref-meta-value {
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.ref-service-tag {
    background: var(--glass);
    backdrop-filter: blur(16px);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
    border-top: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}
.ref-service-tag h4 {
    margin: 0;
    font-size: 1rem;
    color: var(--text);
}

/* --- Content Sections --- */
.content-section {
    padding: 3rem 2rem;
    border-bottom: 1px solid var(--border);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.content-section:last-child { border-bottom: none; }
.content-section h2 { margin-bottom: 1.5rem; color: var(--text); }
.content-section ul { list-style: none; margin-left: 0; }
.content-section ul li {
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    position: relative;
}
.content-section ul li:before {
    content: '\2713';
    position: absolute; left: 0;
    color: var(--accent);
    font-weight: bold;
}

.alt-bg {
    background: var(--elevated-bg);
    padding: 3rem 2rem;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
}
[data-theme="dark"] .alt-bg {
    background: rgba(12, 29, 53, 0.5);
}
.alt-bg > h2, .alt-bg > p, .alt-bg > div {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.content-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
.content-with-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* --- Contact Form --- */
.form-group { margin-bottom: 1.5rem; }
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--form-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--glow);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* --- Tool Banner --- */
.tool-banner {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border-left: 5px solid var(--secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    gap: 2rem;
    align-items: center;
    margin: 3rem auto;
    max-width: 1200px;
    color: var(--text);
}
.tool-banner-icon { font-size: 3rem; flex-shrink: 0; }
.tool-banner-content { flex-grow: 1; }
.tool-banner-content h3 { color: var(--text); margin-bottom: 0.75rem; }
.tool-banner-content p { color: var(--text-sub); margin-bottom: 1rem; font-size: 0.95rem; }

.tool-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.tool-tag {
    background: rgba(0, 99, 153, 0.1);
    border: 1px solid rgba(0, 99, 153, 0.25);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--primary);
}
[data-theme="dark"] .tool-tag {
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.2);
    color: var(--primary-light);
}
.tool-banner .btn-primary { white-space: nowrap; }

/* --- CTA Section --- */
.cta-section {
    background: var(--elevated-bg);
    border-top: 1px solid var(--border);
    color: var(--text);
    text-align: center;
    padding: 4rem 2rem;
    margin: 3rem 0 0;
}
[data-theme="dark"] .cta-section {
    background: linear-gradient(135deg, rgba(7,19,37,0.95) 0%, rgba(12,29,53,0.95) 100%);
    border-top-color: rgba(0,180,216,0.15);
}
.cta-section h2 { color: var(--text); margin-bottom: 1rem; }
.cta-section p {
    color: var(--text-sub);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}
.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* --- Customer Logos --- */
.customer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    align-items: center;
    justify-items: center;
    padding: 2rem;
    background: var(--glass);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
}
.customer-logo {
    height: 100px; width: 100%; max-width: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform var(--transition);
}
.customer-logo:hover {
    transform: scale(1.05);
}
[data-theme="dark"] .customer-logo:hover {
    filter: drop-shadow(0 0 8px var(--glow));
}
.customer-logo img { max-width: 100%; max-height: 80px; object-fit: contain; }

/* --- Footer --- */
.footer {
    background: var(--footer-bg);
    color: var(--text-sub);
    padding: 3rem 2rem 1rem;
    margin-top: 5rem;
    border-top: 1px solid var(--border);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}
.footer-left { display: flex; align-items: center; gap: 1rem; }
.footer-left img { height: 40px; width: 40px; object-fit: contain; filter: var(--logo-filter); }
.footer-left span { font-family: 'Space Grotesk', 'Space Grotesk Fallback', sans-serif; font-weight: 600; color: var(--text); }
.footer-inner p { margin: 0; font-size: 0.875rem; flex-grow: 1; text-align: center; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--text-sub); font-size: 0.875rem; }
.footer-links a:hover { color: var(--primary); }

/* --- Checker Tool Cards --- */
.checker-card {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.checker-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}
.checker-card .card-icon { margin-bottom: 1rem; }
.checker-card h3 { margin-bottom: 0.75rem; font-size: 1.25rem; }
.checker-card p { flex-grow: 1; color: var(--text-sub); font-size: 0.95rem; }
.checker-card a.btn-primary {
    margin-top: auto;
    display: inline-block;
    text-align: center;
}

/* --- Steps Grid --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 1.5rem auto 0;
}
.step-card {
    background: var(--glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
}
.step-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}
.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--btn-primary-text);
    border-radius: 50%;
    font-family: 'Space Grotesk', 'Space Grotesk Fallback', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

/* --- Service, Features, Pricing grids --- */
.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}
.service-list-item {
    background: var(--glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition);
}
.service-list-item:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.service-list-item h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.service-list-item p { color: var(--text-sub); font-size: 0.95rem; margin-bottom: 0; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}
.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.feature-item:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    background: var(--accent);
    color: var(--btn-primary-text);
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 1rem auto 0;
}
.pricing-card {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
}
.pricing-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.services-primary { max-width: 1200px; margin: 3rem auto; padding: 0 2rem; }
.service-featured {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.service-featured img { width: 100%; height: 100%; object-fit: cover; min-height: 300px; }
.service-featured-content { padding: 2.5rem 2rem; }
.label-featured {
    display: inline-block;
    background: var(--secondary);
    color: var(--btn-primary-text);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}
.benefit-list { list-style: none; padding: 0; margin: 1rem 0 1.5rem; }
.benefit-list li { padding-left: 1.5rem; margin-bottom: 0.5rem; position: relative; color: var(--text-sub); }
.benefit-list li:before { content: '\2713'; position: absolute; left: 0; color: var(--accent); font-weight: bold; }

.services-all { max-width: 1200px; margin: 3rem auto; padding: 0 2rem; }
.services-all h2 { margin-bottom: 1.5rem; }
.services-grid-full {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.service-card-full {
    background: var(--glass);
    backdrop-filter: blur(var(--blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}
.service-card-full:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}
.service-card-full img { width: 100%; height: 180px; object-fit: cover; }
.card-content { padding: 1.5rem; }
.card-content h3 { margin-bottom: 0.75rem; }
.card-content p { color: var(--text-sub); font-size: 0.95rem; margin-bottom: 1rem; }
.card-link { font-weight: 600; display: inline-flex; align-items: center; gap: 0.5rem; color: var(--primary); }
.card-link:hover { color: var(--primary-light); }

/* --- Checklist, mapping, misconception, standards, use-case grids --- */
.checklist-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; max-width: 1200px; margin: 1rem auto 0; }
.checklist-item { display: flex; align-items: flex-start; gap: 0.75rem; padding: 1rem; background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius); }
.check-icon { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; background: var(--accent); color: var(--btn-primary-text); border-radius: 50%; font-size: 0.85rem; flex-shrink: 0; }

.mapping-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 1rem auto 0; }
.mapping-card { background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 1.5rem; transition: all var(--transition); }
.mapping-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }

.misconception-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 1rem auto 0; }
.misconception-card { background: var(--glass); backdrop-filter: blur(16px); border-left: 4px solid var(--danger); border-radius: 0 var(--radius) var(--radius) 0; padding: 1.5rem; }

.standards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 1rem auto 0; }
.standard-card { background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 1.5rem; text-align: center; transition: all var(--transition); }
.standard-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }

.use-cases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 1rem auto 0; }
.use-case-card { background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 1.5rem; transition: all var(--transition); }
.use-case-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }

.comparison-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 1rem auto 0; }
.content-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-muted { color: var(--text-sub); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.py-3 { padding: 1.5rem 0; }
.py-4 { padding: 2rem 0; }
.py-5 { padding: 3rem 0; }

/* --- Hamburger Menu --- */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px; height: 32px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
    z-index: 1010;
}
.menu-toggle span {
    display: block;
    width: 24px; height: 2.5px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Inline override helpers --- */
section h2, section h3, section h4 { color: var(--text); }
.card p, .card span, .feature-item p, .content-section p { color: var(--text-sub); }
.content-section h2 { color: var(--text); }

/* Word break for cards */
.card h3, .card h4, .card-title, .feature-title,
.service-card h3, .service-card h4,
.pricing-card h3, .pricing-card h4 {
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* --- Theme Toggle Button --- */
.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 9999;
}
.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}

/* ============================================
   RESPONSIVE: MOBILE (max-width: 768px)
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: 0;
    }
    /* .header-inner ist der echte Flex-Container — muss wrap erlauben damit nav in nächste Zeile bricht */
    .header-inner {
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
    }
    /* .header-logo (neue Klasse) und .header-left (alte Klasse, Abwärtskompatibilität) */
    .header-logo, .header-left { order: 1; flex: 1; min-width: 0; }
    .header-logo img, .header-left img { height: 36px; width: 36px; }
    .logo-text { font-size: 1.05rem; }
    .logo-text span { font-size: 0.9rem; display: inline !important; }
    .menu-toggle { order: 2; display: flex; flex-shrink: 0; }

    nav {
        order: 3;
        display: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0;
        padding-top: 0;
        border-top: 1px solid var(--border);
        margin-top: 0.75rem;
        background: var(--surface);
        border-radius: 0 0 12px 12px;
        overflow: hidden;
        animation: navSlideDown 0.25s ease;
    }
    @keyframes navSlideDown {
        from { opacity: 0; transform: translateY(-8px); }
        to { opacity: 1; transform: translateY(0); }
    }
    nav.open { display: flex; }

    nav > a, nav > .nav-dropdown > a {
        display: block;
        padding: 0.85rem 1.25rem;
        border-bottom: 1px solid var(--border);
        color: var(--text-muted) !important;
        font-weight: 500;
        font-size: 0.95rem;
        min-height: 44px;
        line-height: 1.4;
        text-align: left !important;
        width: 100%;
    }
    nav > a:not(.nav-cta) {
        color: var(--text-muted) !important;
        text-align: left !important;
        padding: 0.85rem 1.25rem !important;
        display: block;
        width: 100%;
    }
    nav > a:hover, nav > .nav-dropdown > a:hover { background: var(--elevated-bg); }

    nav > a.nav-cta {
        margin: 0.5rem 1rem 0.75rem;
        text-align: center;
        border-bottom: none;
        background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        color: var(--nav-cta-text) !important;
        border-radius: 8px;
        padding: 0.75rem 1.5rem;
        box-shadow: 0 2px 12px var(--glow);
    }
    .nav-dropdown { width: 100%; }
    .nav-dropdown-menu {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background: var(--elevated-bg);
        margin-top: 0;
        padding: 0.25rem 0;
    }
    .nav-dropdown.open .nav-dropdown-menu { display: block; }
    .nav-dropdown-menu a {
        padding: 0.65rem 1.25rem 0.65rem 2.25rem;
        font-size: 0.9rem;
        color: var(--text-sub);
        min-height: 40px;
        display: block;
        border-bottom: 1px solid var(--border);
    }
    .nav-dropdown-menu a:hover { color: var(--primary); }

    .nav-dropdown > a::after { content: ' \25BE'; font-size: 0.75rem; }

    /* Hero */
    .hero { padding: 2.5rem 1rem !important; }
    .hero h1 { font-size: 1.75rem !important; }
    .hero p { font-size: 1rem !important; }
    .hero > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; gap: 1.5rem !important; }
    .hero .btn-primary, .hero .btn-outline { display: block; width: 100%; margin: 0.5rem 0 !important; text-align: center; }

    /* Page Header */
    .page-header { padding: 2.5rem 1rem; }
    .page-header h1 { font-size: 1.75rem; }
    .page-header p { font-size: 1rem; }

    /* Typography */
    h1 { font-size: 1.75rem !important; }
    h2 { font-size: 1.5rem !important; }
    h3 { font-size: 1.15rem !important; }

    /* Grids single column */
    .grid-2, .grid-3, .grid-4,
    .steps-grid, .features-grid, .services-grid-full,
    .checklist-grid, .pricing-grid, .mapping-cards,
    .misconception-grid, .standards-grid, .use-cases-grid,
    .comparison-grid, .service-list { grid-template-columns: 1fr !important; }
    .content-grid { grid-template-columns: 1fr !important; padding: 0 1rem; }
    .content-with-image { grid-template-columns: 1fr !important; }
    .service-featured { grid-template-columns: 1fr !important; }
    .service-featured img { min-height: 200px; }
    .service-featured-content { padding: 1.5rem 1rem; }
    .ref-meta { grid-template-columns: 1fr; }

    /* Inline grid overrides */
    [style*="grid-template-columns: repeat"],
    [style*="grid-template-columns:repeat"],
    [style*="grid-template-columns: 1fr 1fr"],
    [style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }

    /* Container overrides */
    .container > div[style*="grid-template-columns: 250px"] { grid-template-columns: 1fr !important; gap: 1.5rem !important; }
    div[style*="display: grid"][style*="gap: 3rem"] { grid-template-columns: 1fr !important; gap: 1.5rem !important; }
    div[style*="display: flex"][style*="gap: 3rem"] { gap: 1.5rem !important; }

    /* Tool banner */
    .tool-banner { flex-direction: column; text-align: center; padding: 1.5rem 1rem; gap: 1rem; }
    .tool-banner-icon { font-size: 2rem; }
    .tool-tags { justify-content: center; }
    .tool-banner .btn-primary { width: 100%; text-align: center; }

    /* CTA */
    .cta-section { padding: 3rem 1rem; }
    .cta-section .btn-primary, .cta-section .btn-secondary, .cta-section .btn-outline { display: block; width: 100%; margin: 0 auto !important; max-width: 300px; }
    .cta-buttons { flex-direction: column; align-items: center; gap: 0.75rem; }
    .cta-buttons .btn-primary, .cta-buttons .btn-secondary, .cta-buttons .btn-outline { display: block; width: 100%; max-width: 300px; margin: 0 auto !important; text-align: center; }

    /* Footer */
    .footer { padding: 2rem 1rem 1rem; }
    .footer-inner { flex-direction: column; text-align: center; gap: 1rem; }
    .footer-inner p { order: 3; width: 100%; font-size: 0.8rem; }
    .footer-links { justify-content: center; }

    /* Customers */
    .customer-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 1rem; }
    .customer-logo { height: 70px; }

    /* Cards */
    .card { padding: 1.5rem; }
    .content-section { padding: 2rem 1rem; }
    .section { padding: 2.5rem 1rem; }
    .services-primary, .services-all { padding: 0 1rem; }

    /* Legal */
    .legal-content { padding: 2rem 1rem; }

    /* Feature items */
    .feature-item { flex-direction: column !important; align-items: center !important; text-align: center; }
    .feature-icon { margin-bottom: 0.25rem; }

    /* Hero images */
    .hero img { max-height: 300px; object-fit: cover; }

    /* YouTube */
    .content-section div[style*="max-width: 800px"] { max-width: 100% !important; }

    /* Theme toggle */
    .theme-toggle { bottom: 1rem; right: 1rem; width: 42px; height: 42px; }
}


/* ===== Unified Header Update (header-inner / header-logo) ===== */
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 1rem;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    flex-shrink: 0;
    color: var(--text);
}
.header-logo img { width: 36px; height: 36px; object-fit: contain; filter: var(--logo-filter); }
.header-logo .logo-text { font-size: 1.05rem; }
.header-logo .logo-text span { color: var(--primary); display: inline !important; font-size: 1.05rem; font-weight: 700; }
.nav-login { border: 1px solid rgba(188,201,206,0.4) !important; }
.nav-dropdown > a::after { content: ' \25BE'; font-size: 0.65rem; opacity: 0.55; }
/* ============================================================== */

/* ===== Version Badge ===== */
.version-badge {
  position: fixed;
  bottom: 4px;
  right: 8px;
  font-size: 10px;
  color: #888;
  opacity: 0.4;
  cursor: pointer;
  transition: opacity 0.2s;
  z-index: 9999;
  user-select: none;
}
.version-badge:hover { opacity: 1.0; }
.version-info-panel {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 8px;
  background: #1a1a2e;
  border: 1px solid #333;
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 12px;
  color: #ccc;
  z-index: 10000;
  min-width: 220px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.version-info-panel.open { display: block; }
.version-info-panel h4 { margin: 0 0 8px; color: #00b4d8; font-size: 13px; }
.version-info-panel td { padding: 2px 6px; }
.version-info-panel td:first-child { color: #888; white-space: nowrap; }
/* ========================= */