/* --- PROMĚNNÉ A ZÁKLAD --- */
:root {
    --page-bg: #ffffff;
    --text-color: #000000;
    --secondary-text: #555555;
    --nav-bg: rgba(255, 255, 255, 0.9);
    --border-color: #e0e0e0;
}

body.dark-mode {
    --page-bg: #0a0a0a;
    --text-color: #ffffff;
    --secondary-text: #aaaaaa;
    --nav-bg: rgba(0, 0, 0, 0.9);
    --border-color: #333333;
}

body {
    font-family: "Google Sans Flex", sans-serif;
    background: var(--page-bg);
    color: var(--text-color);
    margin: 0;
    transition: background 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

/* --- NAVIGACE --- */
.top-nav {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2100;
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    color: var(--secondary-text); 
    text-decoration: none;
    font-family: "Funnel Sans", sans-serif;
    font-size: 1.5vmin;
    letter-spacing: 2px;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    text-transform: uppercase;
    font-weight: 600;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--text-color);
    border-bottom: 2px solid var(--text-color);
}

/* --- DARK MODE SLIDER --- */
.theme-switch-wrapper {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 2200;
    display: flex;
    align-items: center;
    background: rgba(128, 128, 128, 0.1);
    padding: 10px;
    border-radius: 50px;
    backdrop-filter: blur(5px);
}

.theme-switch {
    display: inline-block;
    height: 20px;
    position: relative;
    width: 44px;
}

.theme-switch input { display: none; }

.slider {
    background-color: #ccc;
    bottom: 0; cursor: pointer; left: 0; position: absolute; right: 0; top: 0;
    transition: .4s; border-radius: 34px;
}

.slider:before {
    background-color: white;
    bottom: 3px; content: ""; height: 14px; left: 4px;
    position: absolute; transition: .4s; width: 14px; border-radius: 50%;
}

input:checked + .slider { background-color: #444; }
input:checked + .slider:before { transform: translateX(22px); }

/* --- OBSAH KONTAKTŮ --- */
.contact-container { 
    padding: 150px 5% 50px; 
    max-width: 1400px; 
    margin: 0 auto; 
}

h1 { 
    font-size: clamp(4rem, 10vw, 8rem); 
    font-weight: 800; 
    line-height: 0.9; 
    margin-bottom: 60px; 
    letter-spacing: -2px; 
}

.contact-grid { 
    display: grid; 
    grid-template-columns: 1.2fr 1fr; 
    gap: 80px; 
}

.intro-text { 
    font-size: 1.2rem; 
    margin-bottom: 40px; 
    opacity: 0.8; 
}

.contact-section { margin-bottom: 40px; }
.contact-section h2 { 
    font-size: 0.8rem; 
    letter-spacing: 2px; 
    opacity: 0.5; 
    margin-bottom: 15px; 
}
.contact-section p { font-size: 1.1rem; margin: 5px 0; }
.contact-section a { 
    color: var(--text-color); 
    text-decoration: none; 
    border-bottom: 1px solid var(--text-color); 
}

/* --- NOVÉ: KONTAKTNÍ FORMULÁŘ --- */
.form-section {
    margin-bottom: 60px;
    margin-top: 20px;
}

.form-section h2 {
    font-size: 0.8rem;
    letter-spacing: 2px;
    opacity: 0.5;
    margin-bottom: 25px;
}

.form-wrapper {
    position: relative;
    overflow: hidden;
    min-height: 280px;
}

.input-group {
    position: relative;
    margin-bottom: 30px;
    padding-top: 15px;
}

.input-group input,
.input-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: 1.1rem;
    padding: 10px 0;
    outline: none;
    transition: border-color 0.3s ease;
    resize: none;
}

.input-group input:focus,
.input-group textarea:focus {
    border-bottom: 1px solid var(--text-color);
}

.input-group label {
    position: absolute;
    top: 25px;
    left: 0;
    color: var(--secondary-text);
    pointer-events: none;
    transition: 0.3s ease all;
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group textarea:focus ~ label,
.input-group textarea:not(:placeholder-shown) ~ label {
    top: 0;
    font-size: 0.75rem;
    color: var(--text-color);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.submit-btn {
    background: transparent;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 15px 35px;
    font-family: "Funnel Sans", sans-serif;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.4s ease;
}

.submit-btn:hover {
    background: var(--text-color);
    color: var(--page-bg);
}

.submit-btn svg {
    transition: transform 0.3s ease;
}

.submit-btn:hover svg {
    transform: translateX(5px);
}

/* --- ANIMACE ODESLÁNÍ --- */
#contactForm {
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.success-message {
    position: absolute;
    top: 40%;
    left: 0;
    opacity: 0;
    pointer-events: none;
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform: translateY(20px);
}

.form-wrapper.sent #contactForm {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.form-wrapper.sent .success-message {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.check-icon {
    color: #2ecc71;
    margin-bottom: 15px;
}

/* --- MAPA --- */
.map-section { margin: 60px 0 80px; }
.map-section h2 { font-size: 0.8rem; letter-spacing: 2px; opacity: 0.5; text-transform: uppercase; }

.map-wrapper {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    filter: grayscale(0.2);
    transition: filter 0.4s ease;
}

body.dark-mode .map-wrapper iframe {
    filter: invert(90%) hue-rotate(180deg) brightness(0.9) contrast(0.9);
}

.map-wrapper:hover { filter: grayscale(0); }

/* --- FAQ ACCORDION --- */
.faq-section { margin-top: 80px; }
.accordion-item { border-top: 1px solid var(--border-color); }
.accordion-header {
    width: 100%; padding: 25px 0; background: none; border: none;
    color: var(--text-color); text-align: left; font-size: 1.1rem;
    font-weight: 600; cursor: pointer; display: flex; justify-content: space-between;
}

.accordion-content { max-height: 0; overflow: hidden; transition: all 0.4s ease; opacity: 0; }
.accordion-item.active .accordion-content { max-height: 200px; padding-bottom: 30px; opacity: 0.7; }

/* --- OBRÁZEK A PARALLAX --- */
.contact-image-wrapper { 
    position: sticky; 
    top: 150px; 
    height: 80vh; 
    overflow: hidden; 
    border-radius: 20px; 
}
.parallax-img { width: 100%; height: 120%; object-fit: cover; }

/* --- RESPONZIVITA --- */
@media (max-width: 900px) {
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-image-wrapper { height: 50vh; position: static; margin-top: 40px; }
    .top-nav { gap: 20px; }
}