/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #00CED1; /* Tyrkysová */
    --color-primary-dark: #008B8B;
    --color-bg: #FFFFFF;
    --color-bg-dark: #000000;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-text-white: #FFFFFF;
    --color-border: #e0e0e0;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s ease;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    width: 55px;
    height: 35px;
    object-fit: contain;
    display: block;
}

.logo-text {
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

.nav-menu a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
    color: var(--color-text-white);
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 206, 209, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 2rem 0;
}

.hero-logo {
    width: 100%;
    max-width: 600px;
    height: auto;
    margin: 0 auto 2rem;
    display: block;
    object-fit: contain;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--color-primary);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-bg);
    clip-path: polygon(0 50%, 100% 0%, 100% 100%, 0% 100%);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg-dark);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-white);
    border-color: var(--color-text-white);
}

.btn-secondary:hover {
    background: var(--color-text-white);
    color: var(--color-bg-dark);
    transform: translateY(-2px);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* Services Section */
.services {
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 60px;
    height: 60px;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.service-description {
    color: var(--color-text-light);
    line-height: 1.8;
}

/* Problems Section */
.problems {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.problems-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.problem-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.problem-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.problem-item:hover::before {
    transform: scaleX(1);
}

.problem-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    color: var(--color-primary);
    background: rgba(0, 206, 209, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    transition: var(--transition);
}

.problem-item:hover .problem-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(0, 206, 209, 0.2);
}

.problem-icon svg {
    width: 24px;
    height: 24px;
}

.problem-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

/* About Section */
.about {
    background: var(--color-bg);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    text-align: left;
}

.about-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.9;
}

.about-description strong {
    color: var(--color-text);
    font-weight: 600;
}

.principia-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 2rem;
    padding: 0.1rem 0.5rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
}

.principia-link:hover {
    border-color: var(--color-primary);
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.principia-logo-img {
    width: 160px;
    height: 120px;
    flex-shrink: 0;
    object-fit: contain;
    display: block;
    margin: 0;
    padding: 0;
}

.principia-link-text {
    font-weight: 500;
    color: var(--color-text);
    font-size: 1rem;
}

/* Contact Section */
.contact {
    background: var(--color-bg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-photo {
    margin-bottom: 1rem;
    text-align: center;
}

.contact-photo-img {
    width: 250px;
    height: 300px;
    object-fit: contain;
    border-radius: 12px;
    border: 4px solid var(--color-primary);
    box-shadow: var(--shadow);
    margin: 0 auto 1rem;
    display: block;
    background: var(--color-bg);
}

.contact-person {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0.5rem 0 0.25rem;
}

.contact-person-role {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin: 0;
    font-style: italic;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    color: var(--color-primary);
    background: rgba(0, 206, 209, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.contact-details p {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Contact Form */
.contact-form {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 16px;
    border: 2px solid var(--color-border);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-bg);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 206, 209, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
    font-size: 0.9rem;
    cursor: pointer;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
}

/* Form Messages */
.form-message {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
    animation: slideIn 0.3s ease-out;
}

.form-message-success {
    background: #d4edda;
    color: #155724;
    border: 2px solid #c3e6cb;
}

.form-message-error {
    background: #f8d7da;
    color: #721c24;
    border: 2px solid #f5c6cb;
}

.form-message-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 2px solid #bee5eb;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-white);
    padding: 3rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-white);
}

.footer-logo .logo-icon {
    /* Logo je již bílé SVG obrázek */
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--color-bg);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        gap: 1.5rem;
        align-items: flex-start;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu a::after {
        display: none;
    }

    .hero {
        min-height: 90vh;
        padding-top: 100px;
    }

    .hero-logo {
        max-width: 100%;
        margin-bottom: 1.5rem;
    }

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

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }

    section {
        padding: 60px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card {
        padding: 2rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-photo-img {
        width: 200px;
        height: 240px;
    }

    .contact-form {
        padding: 2rem;
    }

    .principia-link {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .logo-icon {
        width: 45px;
        height: 28px;
    }

    .logo-text {
        font-size: 1rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card {
    animation: fadeInUp 0.6s ease-out;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
    .service-card:nth-child(4) { animation-delay: 0.4s; }
    .service-card:nth-child(5) { animation-delay: 0.5s; }
    .service-card:nth-child(6) { animation-delay: 0.6s; }
    .service-card:nth-child(7) { animation-delay: 0.7s; }

/* Problems Section Responsive */
@media (max-width: 768px) {
    .problems-list {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .problem-item {
        padding: 1.5rem;
    }
}