/* 
 * domain - Services d'audit financier
 * Main stylesheet
 */

/* Color variables */
:root {
    --color-primary: #114B8A;    /* Сапфирово-синий */
    --color-accent: #D4FF00;     /* Золотисто-лаймовый */
    --color-bg: #FDFDF9;         /* Молочно-белый */
    --color-secondary: #3E3E3E;  /* Аспальтово-серый */
    --color-interface: #EAEAEA;  /* Серебристо-белый */
    --color-white: #FFFFFF;
    --color-black: #000000;
    --container-width: 1200px;
    --header-height: 80px;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%; /* 10px = 1rem */
    scroll-behavior: smooth;
}

body {
    font-family: 'Arial', sans-serif;
    font-size: 1.6rem;
    line-height: 1.6;
    color: var(--color-secondary);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 2rem;
    color: var(--color-primary);
}

h1 {
    font-size: 4.8rem;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 2.4rem;
}

h4 {
    font-size: 2rem;
}

p {
    margin-bottom: 1.6rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--color-accent);
}

ul, ol {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1.2rem 2.4rem;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    transition: all 0.3s;
    font-size: 1.6rem;
}

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

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

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

/* Header */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 100;
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: var(--header-height);
}

.header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

/* Logo */
.logo {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo__text {
    text-transform: lowercase;
}

/* Navigation */
.main-nav__list {
    display: flex;
    align-items: center;
}

.main-nav__link {
    display: inline-block;
    padding: 1rem 1.5rem;
    color: var(--color-secondary);
    font-weight: 600;
}

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

.main-nav__link--cta {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 4px;
    margin-left: 1rem;
}

.main-nav__link--cta:hover {
    background-color: var(--color-accent);
    color: var(--color-secondary);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 3rem;
    height: 2.4rem;
}

.menu-toggle__line {
    width: 100%;
    height: 0.3rem;
    background-color: var(--color-primary);
    transition: all 0.3s;
}

/* Sections common styling */
.section {
    padding: 8rem 0;
}

.section__header {
    text-align: center;
    margin-bottom: 4rem;
}

.section__title {
    font-size: 3.6rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 6rem;
    height: 0.3rem;
    background-color: var(--color-accent);
}

.section__description {
    max-width: 70rem;
    margin: 0 auto;
    font-size: 1.8rem;
}

/* Hero section */
.hero {
    height: 100vh;
    min-height: 600px;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    position: relative;
    margin-top: var(--header-height);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 70rem;
    text-align: center;
    margin: 0 auto;
}

.hero__title {
    font-size: 5.6rem;
    color: var(--color-white);
    margin-bottom: 2rem;
}

.hero__subtitle {
    font-size: 2.4rem;
    margin-bottom: 4rem;
}

/* About section */
.about__content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    align-items: center;
}

/* Services section */
.services__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.service-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-card__content {
    padding: 0 2rem 2rem;
}

.service-card__image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.service-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-card__title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Advantages section */
.advantages {
    background-color: var(--color-interface);
}

.advantages__list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
}

.advantage-item__icon {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.advantage-item__title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

/* Process section */
.process__list {
    max-width: 80rem;
    margin: 0 auto;
}

.process-step {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 7rem;
    left: 3.5rem;
    width: 0.2rem;
    height: calc(100% - 4rem);
    background-color: var(--color-accent);
}

.process-step__number {
    flex-shrink: 0;
    width: 7rem;
    height: 7rem;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.4rem;
    font-weight: 700;
    margin-right: 2rem;
    position: relative;
    z-index: 1;
}

.process-step__content {
    padding-top: 1.5rem;
}

/* Testimonials section */
.testimonials {
    background-color: var(--color-white);
}

.testimonials__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.testimonial-card {
    background-color: var(--color-bg);
    border-radius: 8px;
    padding: 3rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    position: relative;
}

.testimonial-card__content {
    margin-bottom: 2rem;
}

.testimonial-card__author {
    display: flex;
    align-items: center;
}

.testimonial-card__avatar {
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 1.5rem;
}

.testimonial-card__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-card__name {
    font-weight: 600;
    font-size: 1.8rem;
}

.testimonial-card__role {
    color: var(--color-primary);
    font-size: 1.4rem;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 3rem;
    font-size: 8rem;
    color: var(--color-accent);
    opacity: 0.2;
    line-height: 1;
}

/* FAQ section */
.faq {
    background-color: var(--color-interface);
}

.faq__list {
    max-width: 80rem;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: 8px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.faq-item__question {
    padding: 2rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item__answer {
    padding: 0 2rem 2rem;
    display: none;
}

.faq-item.active .faq-item__answer {
    display: block;
}

.faq-item__icon {
    font-size: 2rem;
}

/* Contact section */
.contact {
    background-color: var(--color-white);
}

.contact__content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
}

.contact__info {
    padding-right: 2rem;
}

.contact-form {
    background-color: var(--color-bg);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 1.2rem;
    border: 1px solid var(--color-interface);
    border-radius: 4px;
    font-size: 1.6rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23114B8A' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.form-checkbox input[type="checkbox"] {
    margin-right: 1rem;
    margin-top: 0.3rem;
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 6rem 0 3rem;
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer__title {
    color: var(--color-white);
    font-size: 2.4rem;
    margin-bottom: 2rem;
}

.footer__description {
    color: var(--color-interface);
}

.footer h4 {
    color: var(--color-white);
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

.contact-list__item {
    margin-bottom: 1.5rem;
    display: flex;
}

.contact-list__icon {
    margin-right: 1rem;
    font-size: 2rem;
}

.footer a {
    color: var(--color-interface);
    transition: color 0.3s;
}

.footer a:hover {
    color: var(--color-accent);
}

.footer-links li {
    margin-bottom: 1rem;
}

.footer__bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Cookie popup */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    z-index: 1000;
    display: none;
}

.cookie-popup.active {
    display: block;
}

.cookie-popup__content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cookie-popup__text {
    margin-right: 2rem;
    margin-bottom: 0;
}

/* Policy pages */
.policy-page {
    padding: 12rem 0 6rem;
}

.policy-content {
    max-width: 80rem;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: 4rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* Responsive styles */

/* Tablets */
@media screen and (max-width: 991px) {
    html {
        font-size: 56.25%; /* 9px = 1rem */
    }
    
    .services__list, 
    .testimonials__list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages__list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer__info {
        grid-column: 1 / -1;
    }
}

/* Mobile devices */
@media screen and (max-width: 767px) {
    html {
        font-size: 50%; /* 8px = 1rem */
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-nav__list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: 0;
        overflow: hidden;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: height 0.3s;
    }
    
    .main-nav__list--active {
        height: auto;
        padding: 2rem 0;
    }
    
    .main-nav__link {
        width: 100%;
        padding: 1.5rem 2rem;
    }
    
    .main-nav__link--cta {
        margin: 1rem 2rem;
        text-align: center;
    }
    
    .about__content, 
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .services__list, 
    .testimonials__list {
        grid-template-columns: 1fr;
    }
    
    .cookie-popup__content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-popup__text {
        margin-right: 0;
        margin-bottom: 2rem;
    }
    
    .policy-content {
        padding: 2rem;
    }
}

/* Small mobile devices */
@media screen and (max-width: 479px) {
    .advantages__list {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
    }
    
    .hero__title {
        font-size: 4.2rem;
    }
}