/* ================================================
   IT-Praxisberatung.de – Haupt-Stylesheet
   ================================================ */

/* ---- CSS Custom Properties ---- */
:root {
    --primary:       #0056b3;
    --primary-dark:  #003d82;
    --primary-light: #e8f0fb;
    --secondary:     #00a8e8;
    --accent:        #00c896;
    --dark:          #0a2540;
    --text:          #2d3748;
    --text-light:    #718096;
    --bg-light:      #f7f9fc;
    --bg-white:      #ffffff;
    --border:        #e2e8f0;
    --success:       #28a745;
    --error:         #dc3545;
    --shadow-sm:     0 2px 8px rgba(0,0,0,0.08);
    --shadow-md:     0 8px 24px rgba(0,0,0,0.10);
    --shadow-lg:     0 16px 48px rgba(0,0,0,0.14);
    --radius:        8px;
    --radius-lg:     16px;
    --transition:    0.3s ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.bg-light { background: var(--bg-light); }
.bg-dark-blue { background: var(--dark); color: #fff; }

/* ---- Section Labels & Headers ---- */
.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}
.section-label.light { color: var(--secondary); background: rgba(0,168,232,0.15); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); color: var(--dark); margin-bottom: 16px; line-height: 1.25; }
.section-header p { font-size: 1.1rem; color: var(--text-light); max-width: 680px; margin: 0 auto; }
.section-header.light h2 { color: #fff; }
.section-header.light p { color: rgba(255,255,255,0.75); }

/* ---- Buttons ---- */
.btn-primary, .btn-outline, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.7); }
.btn-outline:hover { background: #fff; color: var(--primary); border-color: #fff; }
.btn-large { padding: 14px 32px; font-size: 1rem; }
.btn-block { display: block; width: 100%; justify-content: center; }

/* ---- Cookie Banner ---- */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--dark);
    color: #fff;
    z-index: 9999;
    padding: 16px 24px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
    display: none;
}
.cookie-banner.visible { display: block; }
.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.cookie-content p { font-size: 0.9rem; color: rgba(255,255,255,0.85); }
.cookie-content a { color: var(--secondary); }

/* ---- Header ---- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
}
.logo span { color: var(--primary); }
.logo-icon { color: var(--primary); font-size: 1rem; }
.nav ul { display: flex; align-items: center; gap: 28px; }
.nav ul li a { font-size: 0.9rem; font-weight: 500; color: var(--text); padding: 4px 0; position: relative; }
.nav ul li a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); transition: width var(--transition); }
.nav ul li a:hover::after { width: 100%; }
.nav ul li a.nav-cta { padding: 10px 20px; }
.nav ul li a.nav-cta::after { display: none; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--dark); border-radius: 2px; transition: var(--transition); }

/* ---- Hero ---- */
.hero {
    position: relative;
    min-height: 100vh;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    margin-top: 76px;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,37,64,0.88) 0%, rgba(0,86,179,0.70) 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero-content { max-width: 780px; color: #fff; }
.hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--secondary);
    border: 1px solid rgba(0,168,232,0.5);
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}
.hero-sub { font-size: 1.15rem; opacity: 0.9; margin-bottom: 36px; max-width: 640px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 40px; }
.stat { display: flex; flex-direction: column; }
.stat strong { font-size: 1.6rem; font-weight: 800; color: var(--secondary); }
.stat span { font-size: 0.8rem; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.08em; }

/* ---- Trust Bar ---- */
.trust-bar { background: var(--primary); padding: 16px 0; }
.trust-items { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 32px; }
.trust-item { color: rgba(255,255,255,0.9); font-size: 0.875rem; font-weight: 500; }

/* ---- Intro Section ---- */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.intro-text h2 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); color: var(--dark); margin-bottom: 20px; line-height: 1.3; }
.intro-text p { color: var(--text-light); margin-bottom: 16px; }
.intro-text p strong { color: var(--text); }
.intro-text .btn-primary { margin-top: 8px; }
.intro-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* ---- Services Grid ---- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.service-icon { width: 52px; height: 52px; margin-bottom: 20px; }
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.service-card p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 16px; }
.service-list { display: flex; flex-direction: column; gap: 6px; }
.service-list li { font-size: 0.85rem; color: var(--text-light); padding-left: 16px; position: relative; }
.service-list li::before { content: '→'; position: absolute; left: 0; color: var(--primary); }

/* ---- Target Groups ---- */
.target-group-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}
.target-group-item.reverse { direction: rtl; }
.target-group-item.reverse > * { direction: ltr; }
.target-group-item:last-child { margin-bottom: 0; }
.target-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; }
.target-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}
.target-content h3 { font-size: clamp(1.4rem, 2vw, 1.9rem); color: var(--dark); margin-bottom: 16px; line-height: 1.3; }
.target-content p { color: var(--text-light); margin-bottom: 16px; }
.target-features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 20px 0 28px; }
.target-feature { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 500; }
.target-feature span { color: var(--accent); font-weight: 700; }

/* ---- Process Steps ---- */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.process-step { position: relative; }
.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 28px;
    right: -16px;
    width: 32px;
    height: 2px;
    background: rgba(255,255,255,0.2);
}
.step-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(255,255,255,0.15);
    margin-bottom: 12px;
    line-height: 1;
}
.process-step h3 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.process-step p { font-size: 0.875rem; color: rgba(255,255,255,0.65); }

/* ---- TI Section ---- */
.ti-section { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.ti-content h2 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); color: var(--dark); margin-bottom: 20px; }
.ti-content p { color: var(--text-light); margin-bottom: 16px; }
.ti-apps { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.ti-app {
    background: var(--primary-light);
    border: 1px solid rgba(0,86,179,0.15);
    border-radius: var(--radius);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.ti-app strong { color: var(--primary); font-size: 1rem; }
.ti-app { font-size: 0.8rem; color: var(--text-light); }
.ti-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; }

/* ---- FAQ ---- */
.faq-container { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg-white); }
.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-light); }
.faq-toggle {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 400;
    transition: all var(--transition);
}
.faq-item.active .faq-toggle { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; }
.faq-answer-inner { padding: 0 24px 20px; }
.faq-answer-inner p { color: var(--text-light); font-size: 0.95rem; }
.faq-item.active .faq-answer { max-height: 400px; }

/* ---- Contact ---- */
.contact-wrapper { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start; }
.contact-info h3 { font-size: 1.6rem; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.contact-info > p { color: var(--text-light); margin-bottom: 24px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-detail-item { display: flex; align-items: flex-start; gap: 14px; }
.contact-icon { font-size: 1.3rem; line-height: 1.5; }
.contact-detail-item strong { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-light); margin-bottom: 2px; }
.contact-detail-item a { color: var(--text); font-weight: 500; }
.contact-promise { background: var(--bg-light); border-radius: var(--radius); padding: 20px; }
.contact-promise h4 { font-size: 0.9rem; font-weight: 700; color: var(--dark); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-promise ul { display: flex; flex-direction: column; gap: 8px; }
.contact-promise ul li { font-size: 0.9rem; color: var(--text-light); }

.contact-form-container { background: var(--bg-light); border-radius: var(--radius-lg); padding: 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: var(--bg-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,86,179,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.checkbox-group { flex-direction: row !important; align-items: flex-start; gap: 10px; }
.checkbox-group input[type="checkbox"] { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; accent-color: var(--primary); }
.checkbox-group label { font-size: 0.82rem; font-weight: 400; color: var(--text-light); line-height: 1.5; }
.form-status { margin-top: 16px; padding: 12px 16px; border-radius: var(--radius); font-size: 0.9rem; display: none; }
.form-status.success { display: block; background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.form-status.error { display: block; background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

/* ---- Footer ---- */
.footer { background: var(--dark); color: rgba(255,255,255,0.75); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-logo { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-logo span { color: var(--secondary); }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; margin-bottom: 12px; }
.footer-contact-mail a { color: var(--secondary); font-weight: 500; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.875rem; color: rgba(255,255,255,0.65); transition: color var(--transition); }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom { padding: 24px 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.4); margin-bottom: 4px; }
.footer-seo-text { font-size: 0.7rem !important; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .process-step:not(:last-child)::after { display: none; }
}

@media (max-width: 900px) {
    .intro-grid,
    .target-group-item,
    .target-group-item.reverse,
    .ti-section,
    .contact-wrapper { grid-template-columns: 1fr; gap: 40px; }
    .target-group-item.reverse { direction: ltr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .section { padding: 64px 0; }
    .hamburger { display: flex; }
    .nav ul {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        transform: translateY(-110%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    .nav ul.open { transform: translateY(0); }
    .nav ul li a.nav-cta { width: 100%; justify-content: center; }
    .hero-stats { gap: 24px; }
    .services-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .target-features { grid-template-columns: 1fr; }
    .ti-apps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-buttons { flex-direction: column; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .trust-items { flex-direction: column; align-items: center; }
    .process-steps { grid-template-columns: 1fr; }
}

/* ---- Accessibility ---- */
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }