:root {
    --color-bg: #1E272E;
    --color-accent: #388E3C;
    --color-accent-secondary: #66BB6A;
    --color-text: #ECEFF1;
    --color-text-muted: rgba(236, 239, 241, 0.8);
    --color-card-bg: rgba(255, 255, 255, 0.05);
    --color-card-border: rgba(255, 255, 255, 0.1);
    
    --font-primary: 'EB Garamond', serif;
    --font-secondary: 'Roboto', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(30, 39, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-card-border);
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav__logo-img {
    height: 40px;
    width: auto;
}

.nav__slogan {
    font-family: var(--font-primary);
    font-style: italic;
    color: var(--color-accent-secondary);
    margin-left: var(--spacing-sm);
    font-size: 1.1rem;
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav__link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.nav__link:hover {
    color: var(--color-accent-secondary);
    background: rgba(102, 187, 106, 0.1);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav__toggle-line {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: calc(80px + var(--spacing-xxl)) var(--spacing-sm) var(--spacing-xxl);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero__title {
    font-family: var(--font-primary);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-secondary);
    line-height: 1.2;
}

.hero__subtitle {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-muted);
}

.hero__img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn--primary:hover {
    background: #2E7D32;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn--full {
    width: 100%;
}

/* Sections */
.about,
.products,
.experts,
.testimonials,
.education,
.gallery,
.contact {
    padding: var(--spacing-xxl) var(--spacing-sm);
}

.about__container,
.products__container,
.experts__container,
.testimonials__container,
.education__container,
.gallery__container,
.contact__container {
    max-width: 1200px;
    margin: 0 auto;
}

.about__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about__title,
.products__title,
.experts__title,
.testimonials__title,
.education__title,
.gallery__title,
.contact__title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-secondary);
    text-align: center;
}

.about__title {
    text-align: left;
}

.about__text {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.about__img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
}

/* Cards */
.products__grid,
.experts__grid,
.testimonials__grid,
.education__grid {
    display: grid;
    gap: var(--spacing-lg);
}

.products__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.experts__grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.testimonials__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.education__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.product-card,
.expert-card,
.testimonial-card,
.education-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.product-card:hover,
.expert-card:hover,
.testimonial-card:hover,
.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent-secondary);
}

.product-card__img,
.expert-card__img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.product-card__title,
.expert-card__name,
.education-card__title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-secondary);
}

.expert-card__title {
    color: var(--color-accent);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.education-card__icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-md);
}

.testimonial-card__text {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.testimonial-card__author {
    border-top: 1px solid var(--color-card-border);
    padding-top: var(--spacing-sm);
}

.testimonial-card__name {
    color: var(--color-accent-secondary);
}

.testimonial-card__location {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Gallery */
.gallery__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery__img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.gallery__img:hover {
    transform: scale(1.05);
}

/* Contact */
.contact__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact__title {
    text-align: left;
}

.contact__details {
    margin-top: var(--spacing-lg);
}

.contact__item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
}

.contact__icon {
    width: 24px;
    height: 24px;
    color: var(--color-accent-secondary);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact__form {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-card-border);
}

.contact__form-title {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-secondary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-card-border);
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent-secondary);
    box-shadow: 0 0 0 3px rgba(102, 187, 106, 0.1);
}

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

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--color-card-border);
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer__title {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-secondary);
}

.footer__links {
    list-style: none;
}

.footer__link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
    line-height: 1.8;
}

.footer__link:hover {
    color: var(--color-accent-secondary);
}

.footer__text {
    color: var(--color-text-muted);
    line-height: 1.8;
}

.footer__bottom {
    border-top: 1px solid var(--color-card-border);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer__copyright {
    color: var(--color-text-muted);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #2E7D32;
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* Page Styles */
.page {
    padding: calc(80px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
    min-height: calc(100vh - 200px);
}

.page__container {
    max-width: 800px;
    margin: 0 auto;
}

.page__title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-secondary);
    text-align: center;
}

.page__content {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-card-border);
    backdrop-filter: blur(10px);
}

.page__content h2 {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    color: var(--color-accent-secondary);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.page__content h2:first-child {
    margin-top: 0;
}

.page__content h3 {
    font-family: var(--font-primary);
    font-size: 1.4rem;
    color: var(--color-accent);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.page__content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--color-text-muted);
}

.page__content ul,
.page__content ol {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-text-muted);
}

.page__content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.page__content strong {
    color: var(--color-text);
}

.page__content a {
    color: var(--color-accent-secondary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition-fast);
}

.page__content a:hover {
    border-bottom-color: var(--color-accent-secondary);
}

/* Success Page */
.success-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: calc(var(--spacing-xxl)*2) 0 var(--spacing-lg);
}

.success-page h1 {
    font-family: var(--font-primary);
    font-size: 3rem;
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-md);
}

.success-page p {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.success-page .btn {
    margin-top: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(30, 39, 46, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__slogan {
        display: none;
    }

    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero__title {
        font-size: 2.5rem;
    }

    .about__title,
    .contact__title {
        text-align: center;
    }

    .page__title {
        font-size: 2rem;
    }

    .success-page h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xxl: 3rem;
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }

    .hero {
        padding: calc(80px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    }

    .hero__title {
        font-size: 2rem;
    }

    .products__grid,
    .experts__grid,
    .testimonials__grid,
    .education__grid {
        grid-template-columns: 1fr;
    }

    .page__title {
        font-size: 1.8rem;
    }

    .success-page h1 {
        font-size: 2rem;
    }
}

.success-content,
.error-content,
.default-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.success-icon,
.error-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-accent-secondary);
}

.error-icon {
    color: #f44336;
}

.success-page h1 {
    font-family: var(--font-primary);
    font-size: 3rem;
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-md);
}

.success-page p {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.success-details {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-card-border);
    margin: var(--spacing-lg) 0;
    text-align: left;
}

.success-details h3 {
    font-family: var(--font-primary);
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.success-details ul {
    list-style: none;
    padding: 0;
}

.success-details li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.success-details li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent-secondary);
    font-weight: bold;
}

.success-actions,
.error-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

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

.btn--secondary:hover {
    background: var(--color-accent-secondary);
    color: var(--color-bg);
}

@media (max-width: 768px) {
    .success-page h1 {
        font-size: 2.5rem;
    }

    .success-actions,
    .error-actions {
        flex-direction: column;
        align-items: center;
    }

    .success-actions .btn,
    .error-actions .btn {
        width: 100%;
        max-width: 300px;
    }
}