/* 
* domain.com - Стили для сайта аудиторской компании 
* Адаптивный дизайн, анимации на CSS без JS
*/

/* ======== ПЕРЕМЕННЫЕ И СБРОС ======== */
:root {
    /* Цветовая палитра */
    --color-primary: #FFA552;      /* Мандариновый */
    --color-secondary: #3F2DA5;    /* Ультрамариновый сине-фиолетовый */
    --color-accent: #00B5AD;       /* Лазурный */
    --color-bg: #F7F5F2;           /* Светлый серо-бежевый */
    --color-text: #2B2B2B;         /* Глубокий угольно-серый */
    --color-light: #FFFFFF;
    --color-gray: #E0E0E0;
    --color-dark-gray: #616161;
    
    /* Тени */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* Скругления */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Переходы */
    --transition: all 0.3s ease;
    
    /* Типографика */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
}

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

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

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

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

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

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

ul, ol {
    list-style-type: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

section {
    padding: 8rem 0;
}

/* ======== ТИПОГРАФИКА ======== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 2rem;
}

h1 {
    font-size: 4.2rem;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 2.4rem;
}

h4 {
    font-size: 2rem;
}

p {
    margin-bottom: 1.5rem;
}

.section-title {
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
    padding-bottom: 1.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 8rem;
    height: 4px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
}

/* ======== КНОПКИ ======== */
.btn {
    display: inline-block;
    padding: 1.2rem 2.4rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1.6rem;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    color: var(--color-light);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--color-secondary);
    color: var(--color-light);
    transform: translateY(-2px);
}

.btn-nav {
    padding: 0.8rem 1.5rem;
    background-color: var(--color-primary);
    color: var(--color-light);
    border-radius: var(--radius-sm);
}

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

/* ======== ШАПКА САЙТА ======== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 1.5rem 0;
    backdrop-filter: blur(8px);
}

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

.logo {
    font-size: 2.8rem;
    font-weight: 700;
}

.logo-text {
    color: var(--color-primary);
    position: relative;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease-in-out;
}

.logo:hover .logo-text::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-list li a {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
}

.nav-list li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-list li a:hover {
    color: var(--color-primary);
}

.nav-list li a:hover::after {
    transform: scaleX(1);
}

/* Мобильное меню (CSS-only) */
.menu-toggle {
    display: none;
}

.menu-icon {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 25px;
    height: 20px;
    cursor: pointer;
}

.menu-icon span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--color-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ======== ГЕРОЙ-СЕКЦИЯ ======== */
.hero-section {
    position: relative;
    padding-top: 15rem;
    padding-bottom: 10rem;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/bppa11.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    color: var(--color-light);
}

.hero-title {
    margin-bottom: 2rem;
    font-size: 5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: 2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-content .btn {
    animation: fadeIn 1s ease 0.6s both;
    font-size: 1.8rem;
}

/* ======== О НАС ======== */
.about-section {
    background-color: var(--color-light);
}

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

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

.about-image:hover {
    transform: perspective(1000px) rotateY(0);
}

/* ======== ПРЕИМУЩЕСТВА ======== */
.benefits-section {
    background-color: var(--color-bg);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.benefit-item {
    background-color: var(--color-light);
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.benefit-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    margin-bottom: 2rem;
    color: var(--color-primary);
    font-size: 4rem;
    height: 8rem;
    width: 8rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(255, 165, 82, 0.1);
    border-radius: 50%;
    margin: 0 auto 2rem;
}

.benefit-item h3 {
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
}

/* ======== УСЛУГИ ======== */
.services-section {
    background-color: var(--color-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 4rem;
}

.service-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background-color: var(--color-light);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-image {
    height: 220px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-content {
    padding: 2.5rem;
}

.service-content h3 {
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
}

.service-content .btn {
    margin-top: 1.5rem;
}

/* ======== ПОЧЕМУ МЫ ======== */
.why-us-section {
    background-color: var(--color-secondary);
    color: var(--color-light);
    position: relative;
    overflow: hidden;
}

.why-us-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 30%;
    height: 100%;
    background-image: radial-gradient(var(--color-accent) 2px, transparent 2px);
    background-size: 18px 18px;
    opacity: 0.1;
}

.why-us-section .section-title {
    color: var(--color-light);
}

.why-us-section .section-title::after {
    background-color: var(--color-primary);
}

.why-us-list {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.why-us-list li {
    padding: 1rem 0;
    display: flex;
    align-items: center;
}

.why-us-list li i {
    color: var(--color-primary);
    margin-right: 1.5rem;
    font-size: 2rem;
}

/* ======== ОТЗЫВЫ ======== */
.testimonials-section {
    background-color: var(--color-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.testimonial-card {
    background-color: var(--color-light);
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 2rem;
    left: 2rem;
    font-size: 8rem;
    font-family: Georgia, serif;
    color: rgba(63, 45, 165, 0.1);
    line-height: 1;
}

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

.testimonial-content {
    margin-bottom: 2rem;
    font-style: italic;
    position: relative;
    z-index: 1;
}

.testimonial-author h4 {
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.testimonial-author p {
    font-size: 1.4rem;
    color: var(--color-dark-gray);
    margin-bottom: 0;
}

/* ======== КОНТАКТЫ ======== */
.contact-section {
    background-color: var(--color-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: var(--color-secondary);
    margin-bottom: 2.5rem;
}

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

.contact-details li {
    display: flex;
    align-items: flex-start;
}

.contact-details i {
    color: var(--color-primary);
    margin-right: 1.5rem;
    font-size: 2rem;
}

.contact-form {
    background-color: var(--color-bg);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 1.2rem;
    border: 1px solid var(--color-gray);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 1.6rem;
    transition: var(--transition);
    background-color: var(--color-light);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 165, 82, 0.2);
}

.form-group.checkbox {
    display: flex;
    align-items: flex-start;
}

.form-group.checkbox input {
    width: auto;
    margin-right: 1rem;
    margin-top: 0.5rem;
}

.contact-form .btn {
    width: 100%;
    font-size: 1.8rem;
    padding: 1.5rem;
}

/* ======== ПОДВАЛ ======== */
.site-footer {
    background-color: var(--color-secondary);
    color: rgba(255, 255, 255, 0.8);
    padding: 6rem 0 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-info .footer-logo {
    margin-bottom: 2rem;
}

.footer-logo .logo-text {
    font-size: 2.8rem;
    color: var(--color-light);
}

.footer-info p {
    opacity: 0.8;
    font-size: 1.5rem;
}

.footer-contact h3,
.footer-links h3 {
    color: var(--color-primary);
    margin-bottom: 2rem;
    font-size: 2rem;
}

.footer-contact address {
    font-style: normal;
}

.footer-contact address p {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.footer-contact address i {
    margin-right: 1.5rem;
    color: var(--color-primary);
}

.footer-contact address a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact address a:hover {
    color: var(--color-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1.4rem;
}

/* ======== COOKIE POPUP ======== */
.cookie-popup {
    position: fixed;
    bottom: -100%;
    left: 0;
    right: 0;
    background-color: var(--color-light);
    padding: 2rem;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: bottom 0.5s ease-in-out;
}

.cookie-popup.show {
    bottom: 0;
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    gap: 2rem;
}

.cookie-content p {
    margin-bottom: 0;
}

/* ======== СТИЛИ ДЛЯ ОБРАБОТКИ ОШИБОК ФОРМЫ ======== */
.form-errors {
    background-color: rgba(255, 82, 82, 0.1);
    border-left: 4px solid #ff5252;
    padding: 1.5rem 2rem;
    margin-bottom: 3rem;
    border-radius: var(--radius-sm);
}

.form-errors ul {
    margin: 0;
    padding-left: 2rem;
    list-style-type: circle;
}

.form-errors ul li {
    color: #d32f2f;
    margin-bottom: 0.5rem;
}

.form-send-error {
    background-color: rgba(255, 82, 82, 0.1);
    border-left: 4px solid #ff5252;
    padding: 1.5rem 2rem;
    margin-bottom: 3rem;
    border-radius: var(--radius-sm);
    color: #d32f2f;
    font-weight: 500;
}

.form-group.has-error input,
.form-group.has-error select {
    border-color: #ff5252;
}

.form-group.has-error label {
    color: #d32f2f;
}

/* ======== АНИМАЦИИ ======== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ======== АДАПТИВНОСТЬ ======== */
@media (max-width: 1024px) {
    html {
        font-size: 60%;
    }
    
    .hero-title {
        font-size: 4.2rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 58%;
    }
    
    .hero-title {
        font-size: 3.6rem;
    }
    
    section {
        padding: 6rem 0;
    }
    
    .benefits-grid,
    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    /* Мобильное меню */
    .menu-icon {
        display: flex;
    }
    
    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 2rem 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
        box-shadow: var(--shadow-md);
        backdrop-filter: blur(10px);
    }
    
    .menu-toggle:checked ~ .nav-list {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    .menu-toggle:checked ~ .menu-icon span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle:checked ~ .menu-icon span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle:checked ~ .menu-icon span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 55%;
    }
    
    .hero-title {
        font-size: 3.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
    
    section {
        padding: 5rem 0;
    }
    
    .section-title {
        font-size: 2.8rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
}