/* ==========================================================================
   Vandera Engineers - Stylesheet
   Barvy podle nového stylu:
   - Primární akcent (Sexy Modrá): #0B66C2 / Hover: #084B90
   - Tmavé pozadí/Text: #111827 / #374151
   - Světlé pozadí: #F8FAFC
   - Bílá: #ffffff
   ========================================================================== */

:root {
    --primary-color: #0B66C2;     /* Sexy sytá modrá pro tlačítka, linky a nadpisy */
    --primary-hover: #084B90;     /* Tmavší modrá při najetí myší */
    --dark-color: #111827;        /* Tmavě grafitová (působí lépe než čistá černá) */
    --text-color: #374151;        /* Příjemně čitelný tmavý text */
    --light-bg: #F8FAFC;          /* Velmi jemný ledovo-šedý podklad sekcí */
    --white: #ffffff;
    --border-color: #E2E8F0;      /* Čisté, jemné rámečky */
    --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typografie & Nadpisy */
h1, h2, h3 {
    color: var(--dark-color);
    line-height: 1.3;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
    color: var(--dark-color);
}

h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 25px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
}

h3 {
    font-size: 1.3rem;
}

p {
    margin-bottom: 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover);
}

/* Tlačítka */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;    
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: var(--white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--dark-color);
    border: 2px solid var(--dark-color);
}

.btn-secondary:hover {
    background-color: var(--dark-color);
    color: var(--white);
}

.btn-nav {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 8px 18px;
}

.btn-nav:hover {
    background-color: var(--primary-hover);
    color: var(--white);
}

/* Hlavička */
.site-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo strong {
    font-size: 1.5rem;
    color: var(--dark-color);
    letter-spacing: -0.5px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 25px;
}

.main-nav a {
    color: var(--dark-color);
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--primary-color);
}

/* Sekce obecně */
.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--light-bg);
}

/* Hero Sekce */
.hero-section {
    padding: 90px 0 70px 0;
    background: linear-gradient(135deg, #ffffff 0%, var(--light-bg) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 30px;
    max-width: 900px;
}

.hero-bullets {
    list-style: none;
    margin-bottom: 35px;
}

.hero-bullets li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 12px;
}

.hero-bullets li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.hero-cta {
    display: flex;
    gap: 15px;
}

/* Sekce Služby */
.section-intro {
    font-size: 1.15rem;
    color: #555;
    margin-bottom: 20px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
}

/* ==========================================================================
   Sekce O nás / Tým
   ========================================================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.team-card {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}

.team-photo-wrapper {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background-color: var(--border-color);
}

.team-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.team-info {
    padding: 25px;
}

.team-info h3 {
    margin-bottom: 5px;
    color: var(--dark-color);
}

.team-role {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.team-experience {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
}

/* Úprava pro mobily */
@media (max-width: 768px) {
    .team-photo-wrapper {
        height: 240px;
    }
}

/* Sekce Konstrukce */
.construction-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.construction-item {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

/* Sekce FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.faq-item {
    background: var(--white);
    padding: 25px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.faq-item p:last-child {
    margin-bottom: 0;
}

/* Sekce Kontakt */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    margin-top: 30px;
}

.contact-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Patička */
.site-footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 30px 0;
    text-align: center;
    font-size: 0.9rem;
}

.site-footer p {
    margin: 0;
    color: #888;
}

/* Responsivita pro mobilní zařízení */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }

    .main-nav ul {
        gap: 15px;
        font-size: 0.95rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}