/*
 * STEWO CONSTRUCT s.r.o. - Industrial corporate site styles (CZ/EN)
 * Aligns with redesign spec: steel palette, bilingual controls, responsive layout.
 */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Roboto:wght@400;500;700&family=Roboto+Mono:wght@500&display=swap');

:root {
    --primary-steel: #37474F;
    --primary-dark: #263238;
    --primary-light: #ECEFF1;
    --accent-orange: #FF6D00;
    --accent-blue: #1565C0;
    --text-dark: #212121;
    --text-medium: #616161;
    --border-color: #BDBDBD;
    --background-white: #FAFAFA;
    --max-width: 1200px;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', 'Arial', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background: #F5F7F9;
}

img {
    width: 100%;
    display: block;
    border-radius: 6px;
}

a {
    color: var(--accent-orange);
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
    color: var(--accent-blue);
}

.container {
    width: min(var(--max-width), 92%);
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.section-tight {
    padding: 60px 0;
}

.section-muted {
    background: var(--primary-light);
}

.section-dark {
    background: var(--primary-dark);
    color: #FFFFFF;
}

h1, h2, h3, h4 {
    font-family: 'Oswald', 'Impact', sans-serif;
    letter-spacing: 0.5px;
    color: var(--text-dark);
}

h1 {
    font-size: 3rem;
    line-height: 1.1;
    text-transform: uppercase;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    text-transform: uppercase;
}

h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

p {
    margin-bottom: 16px;
    color: var(--text-medium);
}

.eyebrow {
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-orange);
    font-weight: 700;
}

.tag {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
    border-radius: 4px;
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(255, 109, 0, 0.1);
    color: var(--accent-orange);
    border: 1px solid rgba(255, 109, 0, 0.4);
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 4px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 1.5px solid transparent;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-solid {
    background: var(--accent-orange);
    color: #fff;
}

.btn-solid:hover {
    background: #e65f00;
    transform: translateY(-1px);
}

.btn-outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn-ghost {
    background: transparent;
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.btn-ghost:hover {
    background: rgba(255, 109, 0, 0.08);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 10px 14px;
    background: #000;
    color: #fff;
    z-index: 1001;
}

/* Header */
header {
    position: sticky;
    top: 0;
    width: 100%;
    background: rgba(38, 50, 56, 0.96);
    color: #FFFFFF;
    z-index: 1000;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(6px);
}

header .bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 20px;
}

.logo {
    font-family: 'Oswald', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #FFFFFF;
    text-transform: uppercase;
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 18px;
}

nav a {
    color: #CFD8DC;
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

nav a:hover,
nav a.current {
    color: #FFFFFF;
    border-color: var(--accent-orange);
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.lang-switcher a {
    padding: 8px 10px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    color: #FFFFFF;
    letter-spacing: 1px;
}

.lang-switcher a.active {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
    background: rgba(255, 109, 0, 0.08);
}

.lang-switcher .separator {
    color: #546E7A;
}

.nav-toggle {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 4px;
    color: #FFFFFF;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    cursor: pointer;
}

.nav-toggle-box {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle-line {
    width: 18px;
    height: 2px;
    background: #FFFFFF;
}

.nav-toggle-text {
    font-size: 0.9rem;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--accent-orange);
    outline-offset: 2px;
}

/* Hero */
.hero {
    position: relative;
    min-height: 82vh;
    background: linear-gradient(110deg, rgba(38, 50, 56, 0.92) 0%, rgba(38, 50, 56, 0.85) 50%, rgba(38, 50, 56, 0.82) 100%), url('../images/03_robotic_welding.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: #FFFFFF;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(38, 50, 56, 0.35) 0%, rgba(38, 50, 56, 0.75) 100%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 720px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero h1 {
    color: #FFFFFF;
    font-size: 3.4rem;
    letter-spacing: 3px;
}

.hero p {
    color: #ECEFF1;
    font-size: 1.1rem;
    max-width: 640px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #B0BEC5;
    font-size: 0.95rem;
    margin-top: 6px;
}

/* Sections */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.section-header p {
    max-width: 600px;
}

.split-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    align-items: center;
}

.card {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 6px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

.card.dark {
    background: #2E373C;
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.card.dark p {
    color: #CFD8DC;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 22px;
}

.service-card {
    background: #2C3439;
    color: #FFFFFF;
    padding: 26px;
    border-left: 4px solid var(--accent-orange);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.service-card h3 {
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-card p {
    color: #CFD8DC;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.service-features li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.95rem;
}

.service-features li::before {
    content: '✓';
    color: var(--accent-orange);
    margin-right: 10px;
    font-weight: 700;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 6px;
}

.project-item {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.project-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
    border-radius: 0;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(38, 50, 56, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.project-title {
    color: #FFFFFF;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 10px 12px;
    background: rgba(38, 50, 56, 0.75);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.project-item:hover img {
    transform: scale(1.08);
}

.project-item:hover .project-overlay {
    background: rgba(38, 50, 56, 0.65);
}

.project-item:hover .project-title {
    opacity: 1;
    transform: translateY(0);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.04);
}

.stat-number {
    font-family: 'Oswald', sans-serif;
    font-size: 2.6rem;
    color: var(--accent-orange);
    line-height: 1;
}

.stat-unit {
    font-family: 'Roboto Mono', monospace;
    color: #90A4AE;
}

.stat-label {
    color: #CFD8DC;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
    margin-top: 8px;
}

.cert-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.cert-list .cert {
    padding: 10px 14px;
    border: 1px dashed #B0BEC5;
    border-left: 4px solid var(--accent-orange);
    background: #FFFFFF;
    color: var(--text-dark);
    font-weight: 600;
}

.cta {
    text-align: center;
    background: linear-gradient(90deg, #263238 0%, #313D44 100%);
    color: #FFFFFF;
    padding: 60px 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
}

.cta h2 {
    color: #FFFFFF;
}

.cta p {
    color: #CFD8DC;
    margin-bottom: 20px;
}

/* Page hero for subpages */
.page-hero {
    position: relative;
    min-height: 280px;
    display: flex;
    align-items: center;
    background: linear-gradient(120deg, rgba(38, 50, 56, 0.95) 0%, rgba(38, 50, 56, 0.85) 100%), url('../images/23_factory_exterior.png');
    background-size: cover;
    background-position: center;
    color: #FFFFFF;
}

.page-hero .container {
    position: relative;
    z-index: 1;
}

.breadcrumb {
    color: #B0BEC5;
    font-size: 0.95rem;
    margin-top: 10px;
}

.content-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 28px;
}

.sidebar-nav {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 6px;
    padding: 18px;
    box-shadow: var(--shadow-soft);
}

.sidebar-nav h3 {
    margin-bottom: 12px;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li a {
    display: block;
    padding: 10px 12px;
    border-radius: 4px;
    color: var(--text-dark);
    border: 1px solid transparent;
}

.sidebar-nav li a:hover,
.sidebar-nav li a.active {
    background: var(--primary-light);
    border-color: var(--border-color);
    color: var(--text-dark);
    font-weight: 700;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin-top: 12px;
}

.info-card {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 6px;
    padding: 18px;
    box-shadow: var(--shadow-soft);
    height: 100%;
}

.list-check {
    list-style: none;
    padding: 0;
}

.list-check li {
    padding: 8px 0;
    border-bottom: 1px solid #EEE;
}

.list-check li::before {
    content: '•';
    color: var(--accent-orange);
    margin-right: 8px;
    font-weight: 900;
}

.highlight-box {
    background: #2E373C;
    color: #FFFFFF;
    border-left: 4px solid var(--accent-orange);
    padding: 18px;
    border-radius: 4px;
}

.highlight-box p {
    color: #CFD8DC;
    margin: 8px 0 0;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 14px;
}

.table th,
.table td {
    border: 1px solid #E0E0E0;
    padding: 10px 12px;
    text-align: left;
}

.table th {
    background: var(--primary-light);
    color: var(--text-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

form .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
    padding: 12px 14px;
    border: 1px solid #CFD8DC;
    border-radius: 4px;
    background: #FFFFFF;
    font-size: 1rem;
}

textarea {
    min-height: 140px;
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--accent-orange);
    border-color: var(--accent-orange);
}

.legal-box {
    background: #F1F3F4;
    border-left: 4px solid var(--accent-orange);
    padding: 16px;
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--text-medium);
}

/* Footer */
footer {
    background: var(--primary-dark);
    color: #CFD8DC;
    padding: 50px 0 30px;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.footer-grid h4 {
    color: #FFFFFF;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.footer-grid ul {
    list-style: none;
}

.footer-grid li {
    margin-bottom: 8px;
}

.footer-grid a {
    color: #CFD8DC;
}

.footer-grid a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    text-align: center;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.95rem;
}

/* Language visibility */
body.lang-cs .lang-en,
body.lang-cs [lang="en"] {
    display: none !important;
}

body.lang-en .lang-cs,
body.lang-en [lang="cs"] {
    display: none !important;
}

/* Responsive */
@media (max-width: 992px) {
    h1 { font-size: 2.6rem; }
    h2 { font-size: 1.9rem; }
    .hero { min-height: 70vh; }
    .content-layout {
        grid-template-columns: 1fr;
    }
    nav ul {
        gap: 12px;
    }
}

@media (max-width: 768px) {
    header .bar {
        flex-direction: row;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
    }
    header.nav-enhanced .nav-toggle {
        display: inline-flex;
    }
    header.nav-enhanced nav {
        display: none;
        width: 100%;
    }
    header.nav-enhanced.nav-open nav {
        display: block;
    }
    header.nav-enhanced nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    header.nav-enhanced nav a {
        padding: 10px 0;
    }
    header.nav-enhanced .lang-switcher {
        width: 100%;
        display: none;
        justify-content: flex-start;
        gap: 10px;
    }
    header.nav-enhanced.nav-open .lang-switcher {
        display: flex;
    }
    .hero {
        padding: 80px 0;
    }
    .section, .section-tight {
        padding: 60px 0;
    }
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}

@media (max-width: 576px) {
    h1 { font-size: 2.2rem; }
    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}