/* ==========================================
   HIMETA – Premium Industrial Design
   Professional Grade Stylesheet
   ========================================== */

/* === Design Tokens === */
:root {
    /* RAL 5011 Stahlblau Palette - Industrial Premium */
    --gray-950: #0d1117;
    --gray-900: #151c24;
    --gray-850: #1a232e;
    --gray-800: #232c3a;
    --gray-700: #2d3a4a;
    --gray-600: #3d4d5f;
    --gray-500: #5a6d82;
    --gray-400: #8b9db3;
    --gray-300: #c4cfdb;
    --gray-200: #dfe5ec;
    --gray-100: #f0f3f6;
    
    /* Accent - HIMETA Red */
    --accent: #dc2626;
    --accent-light: #ef4444;
    --accent-dark: #b91c1c;
    --accent-glow: rgba(220, 38, 38, 0.4);
    
    /* Functional */
    --bg-primary: var(--gray-900);
    --bg-secondary: var(--gray-850);
    --bg-tertiary: var(--gray-800);
    --bg-elevated: var(--gray-700);
    
    --text-primary: var(--gray-100);
    --text-secondary: var(--gray-400);
    --text-muted: var(--gray-500);
    
    --border-subtle: var(--gray-800);
    --border-default: var(--gray-700);
    
    /* Typography */
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Layout */
    --max-width: 1280px;
    --nav-height: 72px;
    
    /* Effects */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 60px var(--accent-glow);
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* === Container === */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-8);
}

.section-title em {
    font-style: normal;
    color: var(--accent);
}

.section-header {
    margin-bottom: var(--space-16);
}

.section-header-center {
    text-align: center;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-sm), 0 0 0 0 var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-light);
    box-shadow: var(--shadow-md), 0 0 30px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-primary svg {
    transition: transform var(--transition-base);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-ghost {
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    background: var(--bg-tertiary);
}

/* === Navigation === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, var(--bg-primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.nav.scrolled::before {
    opacity: 1;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

/* Logo */
.logo-mark {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    background: var(--accent);
    padding: var(--space-2) var(--space-4);
    transition: all var(--transition-base);
}

.logo:hover .logo-mark {
    background: var(--accent-light);
}

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-menu a {
    padding: var(--space-3) var(--space-4);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-cta {
    background: var(--accent) !important;
    color: white !important;
    margin-left: var(--space-2);
}

.nav-cta:hover {
    background: var(--accent-light) !important;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all var(--transition-base);
}

.nav-toggle.active span:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:last-child {
    transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        justify-content: center;
        gap: var(--space-4);
        background: var(--bg-primary);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu a {
        font-size: 1.25rem;
        padding: var(--space-4) var(--space-6);
    }
    
    .nav-cta {
        margin-left: 0;
        margin-top: var(--space-4);
    }
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 50% 0%, var(--gray-800) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(220, 38, 38, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    pointer-events: none;
}

.hero-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: calc(var(--nav-height) + var(--space-16)) var(--space-6) var(--space-16);
    position: relative;
    z-index: 1;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        padding-top: calc(var(--nav-height) + var(--space-20));
        padding-bottom: var(--space-20);
    }
}

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

@media (min-width: 1024px) {
    .hero-text {
        text-align: left;
    }
}

.hero-label {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--space-6);
}

.title-line {
    display: block;
}

.title-accent {
    color: var(--accent);
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    margin-bottom: var(--space-10);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
}

@media (min-width: 1024px) {
    .hero-actions {
        justify-content: flex-start;
    }
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    order: -1;
}

@media (min-width: 1024px) {
    .hero-visual {
        order: 0;
    }
}

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.hero-image {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(0,0,0,0.5));
    animation: float 6s ease-in-out infinite;
}

.hero-image-glow {
    position: absolute;
    inset: 10%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(60px);
    opacity: 0.5;
    z-index: -1;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--text-muted), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.5; transform: scaleY(0.8); }
}

@media (max-width: 768px) {
    .hero-scroll {
        display: none;
    }
}

/* === Trust Bar === */
.trust-bar {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-8) 0;
}

.trust-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .trust-items {
        gap: var(--space-12);
    }
}

.trust-item {
    text-align: center;
}

.trust-number {
    display: block;
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.trust-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: var(--space-2);
}

.trust-divider {
    width: 1px;
    height: 40px;
    background: var(--border-default);
    display: none;
}

@media (min-width: 768px) {
    .trust-divider {
        display: block;
    }
}

/* === Sortiment Section === */
.sortiment {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
}

.product-grid {
    display: grid;
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .product-card-large {
        grid-row: span 2;
    }
}

.product-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

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

.product-icon {
    color: var(--accent);
    margin-bottom: var(--space-6);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.product-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-6);
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.product-specs li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-left: var(--space-4);
    border-left: 2px solid var(--border-default);
}

.product-specs strong {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
}

/* Extras */
.extras {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
}

.extras-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
}

.extras-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
}

.extras-list span {
    padding: var(--space-3) var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.extras-list span:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* === Vorteile Section === */
.vorteile {
    padding: var(--space-24) 0;
    background: var(--bg-primary);
}

.vorteile-grid {
    display: grid;
    gap: var(--space-6);
    margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
    .vorteile-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.vorteil-card {
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.vorteil-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--space-4);
}

.vorteil-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
}

.vorteil-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Quote Block */
.quote-block {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.quote-block blockquote {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
    position: relative;
    padding: var(--space-8);
}

.quote-block blockquote::before {
    content: '"';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 6rem;
    color: var(--accent);
    opacity: 0.2;
    line-height: 1;
    font-family: Georgia, serif;
}

/* === Werkstoffe Section === */
.werkstoffe {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
}

.material-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.material {
    padding: var(--space-4) var(--space-6);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.material:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.material-lg {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
}

.material-accent {
    border-color: var(--accent);
    color: var(--accent);
}

.werkstoffe-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* === Kontakt Section === */
.kontakt {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--gray-850) 100%);
    position: relative;
}

.kontakt::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: radial-gradient(ellipse at right, rgba(220, 38, 38, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.kontakt-grid {
    display: grid;
    gap: var(--space-12);
    position: relative;
}

@media (min-width: 768px) {
    .kontakt-grid {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.kontakt-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-4);
}

.kontakt-lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.kontakt-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.kontakt-item {
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--border-subtle);
}

.kontakt-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.kontakt-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.kontakt-value:hover {
    color: var(--accent);
}

/* Checklist */
.kontakt-checklist {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

.kontakt-checklist h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-6);
}

.kontakt-checklist ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.kontakt-checklist li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.kontakt-checklist svg {
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 2px;
}

/* === Footer === */
.footer {
    background: var(--gray-950);
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-main {
    display: grid;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-main {
        grid-template-columns: 1fr auto;
    }
}

.footer-tagline {
    color: var(--text-muted);
    margin-top: var(--space-3);
    font-size: 0.9375rem;
}

.footer-nav {
    display: flex;
    gap: var(--space-16);
}

.footer-col h5 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-col a {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* === Animations === */
@media (prefers-reduced-motion: no-preference) {
    .hero-label,
    .hero-title .title-line,
    .hero-subtitle,
    .hero-actions {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeUp 0.8s ease forwards;
    }
    
    .hero-label { animation-delay: 0.1s; }
    .hero-title .title-line:nth-child(1) { animation-delay: 0.2s; }
    .hero-title .title-line:nth-child(2) { animation-delay: 0.3s; }
    .hero-title .title-line:nth-child(3) { animation-delay: 0.4s; }
    .hero-subtitle { animation-delay: 0.5s; }
    .hero-actions { animation-delay: 0.6s; }
    
    .hero-visual {
        opacity: 0;
        transform: scale(0.95);
        animation: scaleIn 1s ease forwards 0.4s;
    }
}

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

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* === Utility === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}