/* =========== 
   Основні стилі 
   =========== */
:root {
    /* Палітра кольорів */
    --color-deep-water: #003F5C;
    --color-sky-blue: #7aabd4;
    --color-light-blue: #BEE3DB;
    --color-bg: #F2F2F2;
    --color-text: #333;
    --color-text-light: #666;
    --color-text-lighter: #999;
    --color-white: #fff;
    --color-black: rgba(0, 0, 0, 0.8);
    
    /* Шрифти */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    /* Розміри */
    --container-width: 1280px;
    --container-padding: 20px;
    --section-spacing: 100px;
    --section-spacing-mobile: 60px;
    
    /* Переходи */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
    
    /* Тіні */
    --shadow-light: 0 5px 15px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 15px 40px rgba(0, 0, 0, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

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

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

a {
    color: var(--color-deep-water);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* =========== 
   Типографіка 
   =========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: 1.5rem;
}

.section-title {
    color: var(--color-deep-water);
    text-align: center;
    position: relative;
    margin-bottom: 0.5rem;
}

.section-line {
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--color-deep-water), var(--color-sky-blue));
    margin: 0 auto 2rem;
    border-radius: 3px;
}

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.highlight-title {
    color: var(--color-deep-water);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.highlight-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 40px;
    height: 2px;
    background: var(--color-light-blue);
    transition: width var(--transition-medium);
}

.highlight-title:hover::after {
    width: 100%;
}

/* =========== 
   Кнопки 
   =========== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-deep-water);
    color: var(--color-white);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    background-color: var(--color-sky-blue);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
    background-color: var(--color-deep-water);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-hero {
    background-color: var(--color-white);
    color: var(--color-deep-water);
    font-weight: 600;
    box-shadow: var(--shadow-medium);
    padding: 14px 32px;
}

.btn-hero:hover {
    background-color: var(--color-deep-water);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-dark);
}

.btn-newsletter {
    background-color: var(--color-deep-water);
    color: var(--color-white);
    border-radius: 0 30px 30px 0;
    padding: 0 20px;
    height: 100%;
}

.btn-newsletter:hover {
    background-color: var(--color-sky-blue);
    color: var(--color-white);
}

/* =========== 
   Форми 
   =========== */
.form-group {
    margin-bottom: 1.5rem;
}

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

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    border-color: var(--color-sky-blue);
    box-shadow: 0 0 0 3px rgba(122, 171, 212, 0.2);
    outline: none;
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.form-check input[type="checkbox"] {
    margin-right: 10px;
}

.form-errors {
    background-color: rgba(255, 0, 0, 0.1);
    border-left: 4px solid #ff0000;
    padding: 10px 15px;
    margin-bottom: 20px;
    border-radius: 0 4px 4px 0;
}

.form-errors ul {
    list-style: disc;
    margin-left: 20px;
}

.newsletter-group {
    display: flex;
    position: relative;
}

.newsletter-group input {
    border-radius: 30px 0 0 30px;
    border-right: none;
}

/* =========== 
   Шапка (Header) 
   =========== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: background-color var(--transition-fast), padding var(--transition-fast);
    background-color: transparent;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 12px 0;
    box-shadow: var(--shadow-light);
    backdrop-filter: blur(10px);
}

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

.logo {
    z-index: 1010;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-deep-water);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-deep-water);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1010;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-deep-water);
    position: absolute;
    left: 0;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle span:nth-child(1) {
    top: 0;
}

.mobile-menu-toggle span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.mobile-menu-toggle span:nth-child(3) {
    bottom: 0;
}

.mobile-menu-toggle.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

.header-cta {
    display: inline-block;
}

/* =========== 
   Hero-блок 
   =========== */
.hero {
    height: 100vh;
    background-image: url('images/hero.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    color: var(--color-white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 63, 92, 0.8), rgba(0, 0, 0, 0.4));
}

.hero-container {
    position: relative;
    z-index: 10;
    max-width: 800px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s forwards 0.3s;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s forwards 0.6s;
}

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

/* =========== 
   Секція: Спорт 
   =========== */
.section {
    padding: var(--section-spacing) 0;
}

.sport-section {
    background-color: var(--color-white);
}

.sport-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.sport-text {
    order: 1;
}

.sport-image {
    order: 2;
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
}

.sport-image-container {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.sport-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-slow);
}

.energized-athlete {
    opacity: 0;
}

.sport-image:hover .tired-athlete {
    opacity: 0;
}

.sport-image:hover .energized-athlete {
    opacity: 1;
}

/* =========== 
   Секція: Шкіра 
   =========== */
.skin-section {
    background-color: #f9f9f9;
    position: relative;
    overflow: hidden;
}

.skin-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background-color: rgba(190, 227, 219, 0.2);
    border-radius: 50%;
    z-index: 1;
}

.skin-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.skin-image {
    position: relative;
}

.skin-img {
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
    transition: transform var(--transition-medium);
}

.skin-img:hover {
    transform: scale(1.02);
}

.water-drop {
    position: absolute;
    top: -30px;
    right: -30px;
    z-index: 3;
}

.drop-outer {
    width: 60px;
    height: 60px;
    border-radius: 0 50% 50% 50%;
    background: linear-gradient(45deg, var(--color-deep-water), var(--color-sky-blue));
    transform: rotate(45deg);
    animation: pulseDrop 3s infinite;
}

.drop-inner {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 40px;
    height: 40px;
    border-radius: 0 50% 50% 50%;
    background: rgba(255, 255, 255, 0.7);
    transform: rotate(45deg);
}

@keyframes pulseDrop {
    0%, 100% {
        transform: rotate(45deg) scale(1);
    }
    50% {
        transform: rotate(45deg) scale(1.1);
    }
}

.skin-facts {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

.skin-fact {
    flex: 1;
    background-color: var(--color-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: transform var(--transition-fast);
}

.skin-fact:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.fact-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-deep-water);
    margin-bottom: 0.5rem;
}

.fact-text {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* =========== 
   Секція: Імунітет (Kehon tasapaino) 
   =========== */
.body-section {
    background: linear-gradient(to right, #fff, #f0f8ff);
    position: relative;
    overflow: hidden;
}

.body-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.body-image {
    position: relative;
}

.body-img {
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
}

.body-molecules {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.molecule {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--color-sky-blue);
    opacity: 0.7;
}

.molecule-1 {
    top: 20%;
    left: 10%;
    animation: floatMolecule 5s infinite;
}

.molecule-2 {
    top: 60%;
    left: 50%;
    animation: floatMolecule 7s infinite 1s;
}

.molecule-3 {
    top: 30%;
    left: 70%;
    animation: floatMolecule 6s infinite 2s;
}

@keyframes floatMolecule {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(180deg);
    }
}

.body-diagram {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
}

.diagram-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.diagram-bar {
    height: 12px;
    width: 100%;
    background-color: #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.diagram-fill {
    height: 100%;
    background: linear-gradient(to right, var(--color-deep-water), var(--color-sky-blue));
    border-radius: 6px;
    width: 0;
    transition: width 1.5s ease;
}

.diagram-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* =========== 
   Секція: Цитата 
   =========== */
.quote-section {
    height: 400px;
    background-image: url('images/sect.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--color-white);
}

.quote-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.quote {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 800px;
}

.quote p {
    font-family: var(--font-display);
    font-size: 2.5rem;
    line-height: 1.4;
    margin-bottom: 0;
}

/* =========== 
   Секція: Підписка 
   =========== */
.subscribe-section {
    background-color: var(--color-white);
}

.subscribe-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.subscribe-image {
    position: relative;
    padding-right: 2rem;
}

.bottle-img {
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
    transition: transform var(--transition-medium);
}

.bottle-img:hover {
    transform: translateY(-10px);
}

.subscribe-form {
    background-color: #f9f9f9;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
}

.subscribe-form h3 {
    margin-bottom: 1rem;
}

/* =========== 
   Секція: Відгуки 
   =========== */
.reviews-section {
    background-color: var(--color-deep-water);
    color: var(--color-white);
}

.reviews-section .section-title {
    color: var(--color-white);
}

.reviews-section .section-line {
    background: linear-gradient(to right, var(--color-white), var(--color-light-blue));
}

.reviews-slider {
    position: relative;
    display: flex;
    overflow: hidden;
    margin-bottom: 2rem;
}

.review-card {
    min-width: 100%;
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-fast);
}

.review-avatar {
    flex: 0 0 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-light-blue);
}

.review-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.review-content {
    flex: 1;
}

.review-content p {
    font-style: italic;
    margin-bottom: 1rem;
}

.review-author {
    font-weight: 500;
    color: var(--color-light-blue);
}

.reviews-slogan {
    text-align: center;
    margin: 2rem 0;
    font-family: var(--font-display);
    font-size: 1.2rem;
}

.slider-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.slider-prev,
.slider-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    cursor: pointer;
    position: relative;
    transition: background-color var(--transition-fast);
}

.slider-prev:hover,
.slider-next:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.slider-prev::before,
.slider-next::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--color-white);
    border-right: 2px solid var(--color-white);
}

.slider-prev::before {
    transform: translate(-30%, -50%) rotate(-135deg);
}

.slider-next::before {
    transform: translate(-70%, -50%) rotate(45deg);
}

.slider-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active,
.dot:hover {
    background-color: var(--color-white);
    transform: scale(1.2);
}

/* =========== 
   Секція: Контакти 
   =========== */
.contact-section {
    background-color: var(--color-bg);
}

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

.contact-form-container {
    background-color: var(--color-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
}

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

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 24px;
    height: 24px;
    fill: var(--color-deep-water);
}

.google-map {
    height: 300px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

/* =========== 
   Footer 
   =========== */
.footer {
    background-color: var(--color-deep-water);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer a {
    color: var(--color-white);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer a:hover {
    opacity: 1;
    color: var(--color-light-blue);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-nav-list {
    display: flex;
    gap: 1.5rem;
}

.footer-middle {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-newsletter h3 {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-copyright {
    opacity: 0.7;
}

/* =========== 
   Медіа-запити 
   =========== */
@media (max-width: 1280px) {
    :root {
        --section-spacing: 80px;
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 4rem;
    }
}

@media (max-width: 992px) {
    :root {
        --section-spacing: 70px;
    }
    
    .sport-content,
    .skin-content,
    .body-content,
    .subscribe-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .sport-text {
        order: 2;
    }
    
    .sport-image {
        order: 1;
    }
    
    .skin-facts {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-cta {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: center;
        padding: 2rem;
        box-shadow: var(--shadow-dark);
        transition: right var(--transition-medium);
        z-index: 1000;
    }
    
    .nav-list.active {
        right: 0;
    }
    
    .footer-top {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-nav-list {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --section-spacing: var(--section-spacing-mobile);
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .quote p {
        font-size: 1.8rem;
    }
    
    .review-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .quote p {
        font-size: 1.5rem;
    }
    
    .footer-nav-list {
        gap: 1rem;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* =========== 
   Анімації 
   =========== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s, transform 1s;
}

.animate-on-scroll.active {
    opacity: 1;
    transform: translateY(0);
}

/* =========== 
   Мобільний оверлей 
   =========== */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 990;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* =========== 
   Класи для JS 
   =========== */
.hidden {
    display: none;
}

.fade-in {
    animation: fadeIn 0.5s forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-out {
    animation: fadeOut 0.5s forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}