/* ============================================================
   BRB Büromaschinen GmbH – Hauptstylesheet 2026
   ============================================================ */

/* === CSS Variables === */
:root {
    --color-primary:   #1a3a5c;
    --color-primary-dark: #0f2540;
    --color-accent:    #e8501a;
    --color-accent-hover: #c43e0e;
    --color-text:      #2c2c2c;
    --color-text-light:#6b6b6b;
    --color-bg:        #ffffff;
    --color-bg-light:  #f5f7fa;
    --color-bg-dark:   #1a3a5c;
    --color-border:    #dde3ea;
    --font-main:       'Inter', 'Segoe UI', Arial, sans-serif;
    --radius:          6px;
    --radius-lg:       12px;
    --shadow-sm:       0 2px 8px rgba(0,0,0,.08);
    --shadow-md:       0 4px 20px rgba(0,0,0,.12);
    --shadow-lg:       0 8px 40px rgba(0,0,0,.16);
    --transition:      0.25s ease;
    --max-width:       1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul, ol { list-style: none; }

/* === Container === */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Typography === */
h1, h2, h3, h4 {
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.2;
}
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.35rem); }
h4 { font-size: 1.05rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    text-align: center;
    white-space: nowrap;
}
.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,.7);
}
.btn-outline:hover {
    background: rgba(255,255,255,.12);
    color: #fff;
    border-color: #fff;
}
.btn-secondary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-secondary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
}
.btn-lg { padding: 18px 36px; font-size: 1.1rem; }
.btn-sm { padding: 10px 20px; font-size: .9rem; }

/* === Section helpers === */
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-dark { background: var(--color-bg-dark); color: #e8ecf0; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-light { background: var(--color-bg-light); }

.section-header { text-align: center; margin-bottom: 48px; }
.section-header .eyebrow {
    display: inline-block;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 10px;
}
.section-header h2 { margin-bottom: 14px; }
.section-header p { color: var(--color-text-light); max-width: 600px; margin: 0 auto; }

/* === HEADER / NAV === */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #fff;
    box-shadow: var(--shadow-sm);
    border-bottom: 3px solid var(--color-primary);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-primary);
}
.logo-mark {
    background: var(--color-primary);
    color: #fff;
    font-weight: 800;
    font-size: 1.3rem;
    padding: 8px 12px;
    border-radius: var(--radius);
    letter-spacing: .04em;
}
.logo-text { line-height: 1.15; }
.logo-text strong { display: block; font-size: 1.05rem; font-weight: 700; }
.logo-text span { font-size: .75rem; color: var(--color-text-light); letter-spacing: .05em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
    padding: 8px 14px;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: .95rem;
    color: var(--color-text);
    transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a.active {
    background: var(--color-bg-light);
    color: var(--color-primary);
}
.main-nav .nav-cta {
    background: var(--color-accent);
    color: #fff;
    margin-left: 8px;
    padding: 9px 18px;
    font-weight: 600;
}
.main-nav .nav-cta:hover { background: var(--color-accent-hover); color: #fff; }

/* === Burger Menu === */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius);
    transition: background var(--transition);
}
.burger:hover { background: var(--color-bg-light); }
.burger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition);
}
.burger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-nav {
    display: none;
    background: #fff;
    border-top: 1px solid var(--color-border);
    padding: 16px 0 24px;
}
.mobile-nav a {
    display: block;
    padding: 12px 24px;
    font-weight: 500;
    font-size: 1.05rem;
    color: var(--color-text);
    border-radius: 0;
    transition: background var(--transition);
}
.mobile-nav a:hover { background: var(--color-bg-light); color: var(--color-primary); }
.mobile-nav .nav-cta-m {
    margin: 12px 24px 0;
    display: block;
    background: var(--color-accent);
    color: #fff;
    padding: 14px 24px;
    border-radius: var(--radius);
    font-weight: 700;
    text-align: center;
}

/* === HERO === */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, #25527a 100%);
    color: #fff;
    padding: 96px 0 80px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="1" cy="1" r="1" fill="rgba(255,255,255,.04)"/></svg>') repeat;
    pointer-events: none;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-eyebrow {
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: #f4a261;
    margin-bottom: 16px;
}
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero-sub {
    font-size: 1.15rem;
    color: rgba(255,255,255,.82);
    margin-bottom: 36px;
    line-height: 1.6;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-trust {
    display: flex;
    gap: 24px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,.15);
}
.trust-item { text-align: center; }
.trust-item strong { display: block; font-size: 1.8rem; color: #fff; }
.trust-item span { font-size: .8rem; color: rgba(255,255,255,.65); text-transform: uppercase; letter-spacing: .06em; }

.hero-visual {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-lg);
    padding: 40px;
    backdrop-filter: blur(4px);
}
.hero-visual-title {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: rgba(255,255,255,.5);
    margin-bottom: 20px;
}
.hero-product-cards { display: flex; flex-direction: column; gap: 12px; }
.hero-product-card {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: background var(--transition);
}
.hero-product-card:hover { background: rgba(255,255,255,.14); }
.hero-product-icon { font-size: 1.6rem; flex-shrink: 0; }
.hero-product-name { font-weight: 600; color: #fff; font-size: .95rem; }
.hero-product-cat { font-size: .78rem; color: rgba(255,255,255,.55); }

/* === USP / Feature Strip === */
.usp-strip {
    background: var(--color-bg-light);
    padding: 40px 0;
    border-bottom: 1px solid var(--color-border);
}
.usp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.usp-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.usp-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.usp-item strong { display: block; font-weight: 700; color: var(--color-primary); margin-bottom: 3px; }
.usp-item p { font-size: .9rem; color: var(--color-text-light); margin: 0; }

/* === Service Cards === */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.service-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #c8d6e5; }
.service-card:hover::before { transform: scaleX(1); }
.service-card-icon { font-size: 2.5rem; margin-bottom: 18px; }
.service-card h3 { margin-bottom: 12px; }
.service-card p { color: var(--color-text-light); font-size: .95rem; }
.service-card ul { margin-top: 14px; }
.service-card ul li {
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
    font-size: .9rem;
    color: var(--color-text-light);
}
.service-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* === Products === */
.product-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 36px;
}
.filter-btn {
    padding: 8px 20px;
    border: 2px solid var(--color-border);
    background: #fff;
    border-radius: 100px;
    cursor: pointer;
    font-size: .9rem;
    font-weight: 500;
    transition: all var(--transition);
    color: var(--color-text);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.product-image {
    aspect-ratio: 4/3;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-image-placeholder {
    font-size: 4rem;
    opacity: .35;
}
.product-body { padding: 20px; }
.product-category {
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--color-accent);
    margin-bottom: 8px;
}
.product-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.product-card p { font-size: .9rem; color: var(--color-text-light); }
.product-card .btn { margin-top: 16px; width: 100%; justify-content: center; }

/* === About section === */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.stat-box {
    background: var(--color-bg-light);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    border: 1px solid var(--color-border);
}
.stat-box strong { display: block; font-size: 2rem; color: var(--color-primary); font-weight: 800; }
.stat-box span { font-size: .85rem; color: var(--color-text-light); }
.about-image-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    opacity: .3;
}

/* === CTA Banner === */
.cta-banner {
    background: linear-gradient(135deg, var(--color-accent) 0%, #c43e0e 100%);
    padding: 64px 0;
    text-align: center;
}
.cta-banner h2 { color: #fff; margin-bottom: 14px; }
.cta-banner p { color: rgba(255,255,255,.85); margin-bottom: 32px; font-size: 1.1rem; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* === Contact section === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 48px;
    align-items: start;
}
.contact-info-block { background: var(--color-bg-light); border-radius: var(--radius-lg); padding: 36px; }
.contact-locations { display: grid; gap: 24px; }
.contact-location {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}
.contact-location:last-child { border-bottom: none; padding-bottom: 0; }
.contact-location h4 { font-size: 1rem; margin-bottom: 10px; color: var(--color-primary); }
.contact-location p { font-size: .9rem; color: var(--color-text-light); line-height: 1.7; margin: 0; }
.contact-location a { color: var(--color-accent); font-weight: 600; }
.opening-hours { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.opening-hours h4 { margin-bottom: 10px; }
.oh-row { display: flex; justify-content: space-between; font-size: .9rem; padding: 4px 0; }
.oh-row span:first-child { color: var(--color-text-light); }
.oh-row span:last-child { font-weight: 500; }

/* === Contact Form === */
.contact-form { display: grid; gap: 18px; }
.form-group label {
    display: block;
    font-size: .875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: 12px 16px;
    font-family: var(--font-main);
    font-size: .95rem;
    color: var(--color-text);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26,58,92,.12);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-privacy { font-size: .82rem; color: var(--color-text-light); }
.form-privacy a { color: var(--color-primary); }
.form-success {
    display: none;
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 16px 20px;
    border-radius: var(--radius);
    font-weight: 500;
}

/* === Partners === */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 20px;
}
.partner-logo {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .9rem;
    color: var(--color-text-light);
    text-align: center;
    background: #fff;
    min-height: 80px;
    transition: box-shadow var(--transition), border-color var(--transition);
}
.partner-logo:hover { box-shadow: var(--shadow-sm); border-color: #c8d6e5; color: var(--color-primary); }

/* === Footer === */
.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,.75);
    padding: 56px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-mark { background: rgba(255,255,255,.12); }
.footer-brand .logo-text strong { color: #fff; }
.footer-brand .logo-text span { color: rgba(255,255,255,.45); }
.footer-brand p { margin-top: 16px; font-size: .9rem; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col ul a { font-size: .9rem; color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer-col ul a:hover { color: #fff; }
.footer-col address { font-style: normal; font-size: .9rem; line-height: 1.8; }
.footer-col address a { color: rgba(255,255,255,.75); }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: .82rem;
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: rgba(255,255,255,.9); }

/* === Sticky Call Button (Mobile) === */
.sticky-call {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
    background: var(--color-accent);
    color: #fff;
    padding: 14px 22px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 0 4px 20px rgba(232,80,26,.4);
    align-items: center;
    gap: 8px;
    transition: background var(--transition), transform var(--transition);
}
.sticky-call:hover { background: var(--color-accent-hover); color: #fff; transform: scale(1.05); }

/* === Cookie Banner === */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #1a1a2e;
    color: #e8ecf0;
    padding: 20px 24px;
    z-index: 2000;
    display: none;
    border-top: 3px solid var(--color-accent);
}
.cookie-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.cookie-inner p { font-size: .9rem; flex: 1; min-width: 250px; margin: 0; }
.cookie-inner p a { color: #7ec8e3; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }

/* === Alert / Flash === */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 18px;
    font-size: .95rem;
}
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-info { background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }

/* === Page Hero (inner pages) === */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    padding: 56px 0 48px;
    color: #fff;
}
.page-hero h1 { color: #fff; margin-bottom: 8px; }
.page-hero p { color: rgba(255,255,255,.75); font-size: 1.05rem; }
.breadcrumb { font-size: .85rem; color: rgba(255,255,255,.55); margin-bottom: 12px; }
.breadcrumb a { color: rgba(255,255,255,.65); }
.breadcrumb span { margin: 0 8px; }

/* === Responsive === */
@media (max-width: 1024px) {
    .usp-grid { grid-template-columns: repeat(2, 1fr); }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .main-nav { display: none; }
    .burger { display: flex; }
    .mobile-nav.open { display: block; }

    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { display: none; }
    .hero { padding: 64px 0 56px; }
    .hero-trust { flex-wrap: wrap; gap: 16px; }

    .usp-grid { grid-template-columns: 1fr; gap: 20px; }
    .service-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    .sticky-call { display: flex; }
    .section { padding: 48px 0; }

    .form-row { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: flex-start; }
    .cta-actions { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .hero-trust { gap: 20px; }
    .trust-item strong { font-size: 1.4rem; }
}