:root {

    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    --color-secondary: #fcd34d;
    --color-secondary-dark: #fbbf24;
    --color-accent: #10b981;
    --color-background-light: #f9fafb;
    --color-background-dark: #1f2937;
    --color-text-dark: #111827;
    --color-text-light: #6b7280;
    --color-white: #ffffff;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-divider: #e0e7ff;
    --color-overlay-start: rgba(0, 0, 0, 0.4);
    --color-overlay-end: rgba(0, 0, 0, 0.7);


    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-size-base: 1rem;
    --font-size-h1: 3.5rem;
    --font-size-h2: 2.5rem;
    --font-size-h3: 1.75rem;
    --line-height-heading: 1.2;
    --line-height-body: 1.6;


    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    --section-padding-y: 6rem;


    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);


    --transition-fast: 0.2s ease-in-out;
    --transition-slow: 0.4s ease-in-out;
}


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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
    line-height: var(--line-height-body);
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover,
a:focus {
    color: var(--color-primary-dark);
    text-decoration: underline;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--section-padding-y) 0;
}

.section__title {
    font-family: var(--font-heading);
    font-size: var(--font-size-h2);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-heading);
}

.section__subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.text-center {
    text-align: center;
}

.button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

.button--primary:hover,
.button--primary:focus {
    background-color: var(--color-primary-dark);
    text-decoration: none;
    color: white;
}

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

.button--secondary:hover,
.button--secondary:focus {
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.button--tertiary {
    background-color: var(--color-gray-200);
    color: var(--color-text-dark);
    border-color: var(--color-gray-200);
}

.button--tertiary:hover,
.button--tertiary:focus {
    background-color: var(--color-gray-300);
    text-decoration: none;
}

.button--read {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
}

.button--read i {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.button--read:hover i {
    transform: translateX(5px);
}

.tag {
    display: inline-block;
    background-color: var(--color-gray-200);
    color: var(--color-text-light);
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}


.animated-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animated-fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}


.about-us__grid,
.categories__grid,
.featured__grid,
.reviews__grid,
.calculator__grid,
.contact__grid,
.footer__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.about-us__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
}

.categories__grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

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

.calculator__grid {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact__grid {
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xxl);
}

.footer__grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}


.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.navbar__brand {
    font-size: 25px;
    font-weight: 700;
}

.navbar__menu {
    display: flex;
    list-style: none;
}

.navbar__menu li {
    margin-left: var(--spacing-lg);
}

.navbar__menu a {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-dark);
}

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

.navbar__toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--spacing-md);
    cursor: pointer;
    color: var(--color-primary);
}

.mobile-menu {
    display: none;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    box-shadow: var(--shadow-md);
}

.mobile-menu__list {
    list-style: none;
}

.mobile-menu__list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.mobile-menu__link {
    display: block;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-dark);
    font-size: 1.1rem;
}



.hero {
    background-image: url('../img/hero.png');
    background-size: cover;
    background-position: center;
    position: relative;
    padding: var(--section-padding-y) 0;
    color: var(--color-white);
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-overlay-start) 0%, var(--color-overlay-end) 100%);
}

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

.hero__title {
    font-size: var(--font-size-h1);
    font-weight: 700;
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-gray-100);
}

.hero__actions .button {
    margin: 0 var(--spacing-sm);
}


.about-us__image-wrapper img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-us__list {
    list-style: none;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.about-us__list li {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    color: var(--color-text-dark);
}

.about-us__list li i {
    color: var(--color-accent);
    margin-right: var(--spacing-sm);
}


.category-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-card__icon {
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.category-card__title {
    font-family: var(--font-heading);
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-xs);
}

.category-card__description {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.category-card__examples {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-sm);
}


.featured-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.featured-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.featured-card__media img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-fast);
}

.featured-card:hover .featured-card__media img {
    transform: scale(1.05);
}

.featured-card__content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.featured-card__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.featured-card__meta {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.featured-card__meta i {
    margin-right: var(--spacing-xs);
}

.featured-card__tags {
    margin-bottom: var(--spacing-sm);
}

.featured-card__excerpt {
    color: var(--color-text-dark);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}


.guide__timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 20px;
}

.guide__timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background-color: var(--color-gray-200);
}

.timeline__item {
    position: relative;
    padding-bottom: var(--spacing-xxl);
    padding-left: var(--spacing-xl);
}

.timeline__icon {
    position: absolute;
    left: -20px;
    top: 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 10;
}

.timeline__content {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

.timeline__content h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.timeline__content p {
    margin-bottom: var(--spacing-sm);
}

.checklist-link {
    display: inline-block;
    font-weight: 500;
}


.calculator {
    background-color: var(--color-gray-100);
}

.calculator__form {
    background-color: var(--color-white);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.calculator__result {
    background-color: var(--color-white);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

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

.form-group input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
}

.result-box {
    border: 1px dashed var(--color-primary-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
}

.result-box h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.result-box p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.result-disclaimer {
    font-size: 0.9rem;
    color: var(--color-text-light);
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.result-disclaimer i {
    color: var(--color-primary);
    margin-right: var(--spacing-xs);
}


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

.review-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--color-gray-200);
}

.review-card img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
}

.review-card__stars {
    color: var(--color-secondary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.review-card__text {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    font-style: italic;
    color: var(--color-text-dark);
}

.review-card__author {
    font-weight: 500;
    color: var(--color-primary-dark);
    margin-top: var(--spacing-sm);
}

.reviews__disclaimer {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-xl);
}

.reviews__disclaimer i {
    color: var(--color-accent);
    margin-right: var(--spacing-xs);
}


.faq {
    background-color: var(--color-gray-100);
}

.faq__item {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
}

.faq__question {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-dark);
}

.faq__question i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.faq__answer {
    margin-top: var(--spacing-sm);
    color: var(--color-text-dark);
}

.faq__answer a {
    font-weight: 500;
}


.contact__info {
    font-size: 1.1rem;
    color: var(--color-text-dark);
}

.contact__info h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-sm);
}

.contact__info address {
    font-style: normal;
    margin-bottom: var(--spacing-md);
}

.contact__info p {
    margin-bottom: var(--spacing-sm);
}

.contact__info p i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.contact__info a {
    color: var(--color-text-dark);
}

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

.contact__form {
    background-color: var(--color-white);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact__form textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: var(--font-body);
}

.form-group--checkbox {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group--checkbox input {
    width: auto;
    margin-right: var(--spacing-sm);
}

.form-group--checkbox label {
    display: inline;
}

.form-group--checkbox a {
    text-decoration: underline;
}

#form-status {
    margin-top: var(--spacing-md);
    font-weight: 500;
    text-align: center;
}

.recaptcha-placeholder {
    width: 304px;
    height: 78px;
    background-color: var(--color-gray-200);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}


.footer {
    background-color: var(--color-text-dark);
    color: var(--color-gray-200);
    padding: var(--section-padding-y) 0;
}

.footer__brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer__col {
    display: flex;
    flex-direction: column;
}

.footer__heading {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.footer__menu,
.footer__contacts {
    list-style: none;
}

.footer__menu li,
.footer__contacts li {
    margin-bottom: var(--spacing-sm);
}

.footer__menu a,
.footer__contacts a {
    color: var(--color-gray-200);
}

.footer__menu a:hover,
.footer__contacts a:hover {
    color: var(--color-primary);
}

.footer__contacts i {
    margin-right: var(--spacing-sm);
    color: var(--color-primary);
}

.footer__disclaimer {
    border-top: 1px solid var(--color-gray-300);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    font-size: 0.85rem;
    color: var(--color-gray-300);
    text-align: center;
}

.footer__copyright {
    font-size: 0.9rem;
    color: var(--color-gray-400);
    margin-top: var(--spacing-sm);
}


.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-fast);
    z-index: 100;
}

.scroll-to-top:hover {
    opacity: 0.8;
}


.header--privacy {
    position: static;
}

.privacy-page {
    padding-top: var(--spacing-xl);
}

.page-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-h2);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.privacy-date {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.breadcrumb {
    list-style: none;
    display: flex;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin: 0 0.5rem;
    color: var(--color-gray-300);
}

.privacy-block {
    margin-bottom: var(--spacing-xxl);
}

.privacy-block h2 {
    font-family: var(--font-heading);
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.privacy-block p,
.privacy-block li {
    color: var(--color-text-dark);
    line-height: var(--line-height-body);
}

.privacy-block ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.privacy-block li {
    margin-bottom: var(--spacing-sm);
}


@media (max-width: 992px) {
    .navbar__menu {
        display: none;
    }

    .navbar__toggle {
        display: block;
    }

    .about-us__grid,
    .calculator__grid,
    .contact__grid {
        grid-template-columns: 1fr;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__actions {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero__actions .button {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }

    .section__title {
        font-size: 2rem;
    }

    .section__subtitle {
        font-size: 1rem;
    }

    .featured-card {
        flex-direction: column;
    }

    .featured-card__media img {
        height: 200px;
    }

    .calculator__form,
    .calculator__result {
        padding: var(--spacing-lg);
    }

    .contact__form {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    .hero__title {
        font-size: 2rem;
    }

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

    .footer__col:first-child {
        margin-bottom: var(--spacing-lg);
    }
}