/* ═══════════════════════════════════════════════
   BOZ GmbH – Main Stylesheet
   ═══════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────── */
:root {
    --primary: #00AEEF;
    --primary-dark: #0090c5;
    --primary-light: rgba(0, 174, 239, 0.1);
    --primary-glow: rgba(0, 174, 239, 0.25);
    --anthracite: #1e2533;
    --anthracite-light: #2d3548;
    --foreground: #1a1f2e;
    --muted: #64748b;
    --muted-bg: #f8fafc;
    --border: #e2e8f0;
    --card-bg: #ffffff;
    --bg: #f8fafc;
    --white: #ffffff;
    --radius: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 40px -8px rgba(0,0,0,0.1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: 'DM Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--foreground);
    background: var(--bg);
    line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* ── Buttons ───────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    font-weight: 600;
    border: none;
    cursor: pointer;
    border-radius: 9999px;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1;
}

.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }
.btn-lg { padding: 0.875rem 2rem; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px var(--primary-glow);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(0, 174, 239, 0.4);
    transform: translateY(-1px);
}

.btn-outline-light {
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(8px);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.2);
}

/* ── Header ────────────────────────────────────── */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    transition: all var(--transition);
}
.site-header.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border);
}
.site-header.scrolled .nav-link { color: var(--foreground); }
.site-header.scrolled .nav-link:hover { color: var(--primary); }
.site-header.scrolled .nav-link.active { color: var(--primary); background: var(--primary-light); }
.site-header.scrolled .logo-text { color: var(--foreground); }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 2.5rem; height: 2.5rem;
    border-radius: var(--radius);
    background: var(--primary);
    color: var(--white);
    font-weight: 700;
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--white);
    transition: color var(--transition);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    border-radius: var(--radius);
    transition: all 0.2s;
}
.nav-link:hover { color: var(--white); background: rgba(255,255,255,0.1); }
.nav-link.active { color: var(--primary); background: var(--primary-light); }

.nav-cta { margin-left: 0.5rem; }

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
}
.mobile-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition);
}
.site-header.scrolled .mobile-toggle span { background: var(--foreground); }

.mobile-menu {
    display: none;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
}
.mobile-menu.open { display: block; }
.mobile-nav { display: flex; flex-direction: column; gap: 0.25rem; }
.mobile-link {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground);
    border-radius: var(--radius);
    transition: background var(--transition);
}
.mobile-link:hover { background: var(--primary-light); }

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

/* ── Hero ──────────────────────────────────────── */
.hero-section {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    will-change: transform;
}
.hero-bg img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to right, rgba(30,37,51,0.9), rgba(30,37,51,0.7), rgba(30,37,51,0.4));
}
.hero-overlay-bottom {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(30,37,51,0.6), transparent);
}

.hero-content {
    position: relative;
    z-index: 10;
    padding-top: 5rem;
}

.hero-inner { max-width: 48rem; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary-glow);
    border-radius: 9999px;
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}
.badge-dot {
    width: 0.5rem; height: 0.5rem;
    border-radius: 50%;
    background: var(--primary);
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}
.hero-subtitle {
    display: block;
    font-size: clamp(1.25rem, 2.5vw, 2rem);
    font-weight: 400;
    color: rgba(255,255,255,0.8);
    margin-top: 0.5rem;
}

.hero-text {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.7);
    max-width: 36rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-services {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}
@media (max-width: 640px) { .hero-services { grid-template-columns: repeat(2, 1fr); } }

.hero-service-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-xl);
    padding: 0.75rem 1rem;
    transition: background var(--transition);
}
.hero-service-card:hover { background: rgba(255,255,255,0.1); }
.hero-service-card svg { color: var(--primary); flex-shrink: 0; }
.hero-service-card span { font-size: 0.875rem; color: rgba(255,255,255,0.8); font-weight: 500; }

/* ── Sections ──────────────────────────────────── */
.section { padding: 6rem 0; }
.section-light { background: var(--bg); }
.section-muted { background: var(--muted-bg); }

.section-header {
    max-width: 48rem;
    margin: 0 auto 4rem;
    text-align: center;
}
.section-label {
    display: inline-block;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-top: 0.75rem;
    margin-bottom: 1rem;
}
.section-desc {
    color: var(--muted);
    font-size: 1.125rem;
    line-height: 1.7;
}

/* ── Features ──────────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
@media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; } }

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    transition: all 0.5s;
}
.feature-card:hover {
    border-color: var(--primary-glow);
    box-shadow: var(--shadow-xl), 0 0 0 1px var(--primary-light);
}

.feature-icon {
    width: 3.5rem; height: 3.5rem;
    border-radius: var(--radius-xl);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: background var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary-glow); }
.feature-icon svg { color: var(--primary); }

.feature-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; }
.feature-card p { color: var(--muted); line-height: 1.7; }

/* ── Services ──────────────────────────────────── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
@media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .services-grid { grid-template-columns: 1fr; } }

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all 0.5s;
}
.service-card:hover {
    border-color: var(--primary-glow);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.service-image {
    position: relative;
    height: 12rem;
    overflow: hidden;
}
.service-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.service-card:hover .service-image img { transform: scale(1.05); }

.service-image-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(30,37,51,0.6), transparent);
}
.service-image-title {
    position: absolute;
    bottom: 1rem; left: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.service-image-title h3 { color: var(--white); font-size: 1.125rem; font-weight: 700; }

.service-body { padding: 1.5rem; }
.service-body ul { display: flex; flex-direction: column; gap: 0.5rem; }
.service-body li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--muted);
}
.bullet {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}

/* ── References ────────────────────────────────── */
.references-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
@media (max-width: 1024px) { .references-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .references-grid { grid-template-columns: 1fr; } }

.reference-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all 0.3s;
}
.reference-card:hover {
    border-color: var(--primary-glow);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.reference-image {
    aspect-ratio: 4/3;
    background: var(--muted-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.placeholder-icon { color: rgba(100,116,139,0.3); }

.reference-body { padding: 1.5rem; }
.reference-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    transition: color var(--transition);
}
.reference-card:hover .reference-body h3 { color: var(--primary); }
.reference-body p { color: var(--muted); font-size: 0.875rem; }

/* ── CTA ───────────────────────────────────────── */
.cta-section {
    position: relative;
    padding: 6rem 0;
    background: var(--anthracite);
    overflow: hidden;
}
.cta-gradient {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0,174,239,0.1), transparent);
}
.cta-content {
    position: relative;
    z-index: 10;
    text-align: center;
}
.cta-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}
.cta-content p {
    color: rgba(255,255,255,0.6);
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 36rem;
    margin-left: auto;
    margin-right: auto;
}
.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* ── Contact ───────────────────────────────────── */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}
@media (max-width: 1024px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info h3, .contact-form-wrap h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.contact-persons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}
@media (max-width: 480px) { .contact-persons { grid-template-columns: 1fr; } }

.person-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    padding: 1.5rem;
    transition: border-color var(--transition);
}
.person-card:hover { border-color: var(--primary-glow); }

.person-avatar {
    width: 3rem; height: 3rem;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}
.person-avatar svg { color: var(--primary); }

.person-card h4 { font-size: 1.125rem; font-weight: 700; }
.person-role { color: var(--muted); font-size: 0.875rem; margin-bottom: 0.75rem; }
.person-phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.875rem;
}
.person-phone svg { color: var(--primary); }

.contact-details { display: flex; flex-direction: column; gap: 1rem; }
.detail-row { display: flex; align-items: flex-start; gap: 1rem; }
.detail-icon {
    width: 2.5rem; height: 2.5rem;
    border-radius: var(--radius-xl);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.detail-icon svg { color: var(--primary); }
.detail-row h5 { font-weight: 600; margin-bottom: 0.25rem; }
.detail-row p { color: var(--muted); font-size: 0.875rem; }

/* ── Contact Form ──────────────────────────────── */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.contact-form input,
.contact-form textarea {
    font-family: inherit;
    font-size: 0.9375rem;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: var(--card-bg);
    color: var(--foreground);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    width: 100%;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.contact-form textarea { min-height: 10rem; resize: none; }

.form-message {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
}
.form-message.success { background: #dcfce7; color: #166534; }
.form-message.error { background: #fee2e2; color: #991b1b; }

/* ── Footer ────────────────────────────────────── */
.site-footer {
    background: var(--anthracite);
    color: rgba(255,255,255,0.6);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
}
@media (max-width: 768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.footer-logo .logo-text { color: var(--white); }
.footer-desc { font-size: 0.875rem; line-height: 1.7; }

.footer-col h4 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col a {
    font-size: 0.875rem;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }

.footer-contact { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}
.contact-row svg { color: var(--primary); flex-shrink: 0; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 3rem;
    padding: 2rem 0;
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.4);
}

/* ── Animations ────────────────────────────────── */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Utility ───────────────────────────────────── */
::selection { background: var(--primary); color: var(--white); }

@media (max-width: 768px) {
    .section { padding: 4rem 0; }
    .section-header { margin-bottom: 2.5rem; }
}