/* ===== Глобальные переменные CSS ===== */
:root {
  /* Основные цвета */
  --color-primary: #ff3e00;
  --color-primary-dark: #e23600;
  --color-primary-light: #ff6b40;
  
  --color-secondary: #5d00ff;
  --color-secondary-dark: #4b00cc;
  --color-secondary-light: #7c33ff;
  
  --color-tertiary: #00c2ff;
  --color-tertiary-dark: #0095c2;
  --color-tertiary-light: #33d6ff;
  
  --color-accent: #ffcc00;
  --color-accent-dark: #e6b800;
  --color-accent-light: #ffd633;

  /* Нейтральные цвета */
  --color-white: #ffffff;
  --color-light-gray: #f5f5f5;
  --color-medium-gray: #e0e0e0;
  --color-dark-gray: #333333;
  --color-black: #111111;
  
  /* Фоновые градиенты */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-tertiary) 100%);
  --gradient-dark-overlay: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.7) 100%);
  
  /* Тени */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Скругления */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Анимации */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Шрифты */
  --font-heading: 'Inter', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  
  /* Размеры */
  --header-height: 80px;
  --container-padding: 2rem;
}

/* ===== Базовые стили ===== */
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
  scroll-behavior: smooth;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  margin-top: 0;
  line-height: 1.2;
  color: var(--color-black);
}

p {
  margin-bottom: 1.5rem;
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ===== Заголовки секций ===== */
.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.title-underline {
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 0 auto 2rem;
  border-radius: var(--radius-full);
}

.section-description {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  color: var(--color-dark-gray);
  text-align: center;
}

/* ===== Кнопки ===== */
.btn,
button,
input[type="submit"] {
  display: inline-block;
  font-weight: 600;
  font-family: var(--font-heading);
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 2px solid transparent;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn::after,
button::after,
input[type="submit"]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  transition: all var(--transition-normal);
  z-index: -1;
}

.btn:hover::after,
button:hover::after,
input[type="submit"]:hover::after {
  height: 100%;
}

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

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-outline-light {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-outline-light:hover, .btn-outline-light:focus {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ===== Header ===== */
.header {
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.navbar {
  height: var(--header-height);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.navbar-nav {
  background-color: rgba(255, 255, 255, 0.9);
}

.navbar-nav .nav-link {
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  color: var(--color-dark-gray);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover {
  color: var(--color-primary);
}

.navbar-nav .nav-link:hover::after {
  width: 50%;
}

/* ===== Hero Section ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + 2rem) 0 2rem;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-section .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-dark-overlay);
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-section h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--color-white);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-section .lead {
  font-size: 1.25rem;
  color: var(--color-white);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Частицы */
.particles-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* ===== About Section ===== */
.about-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-white);
}

.about-image-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2rem;
}

.about-image-container img {
  transition: transform var(--transition-slow);
}

.about-image-container:hover img {
  transform: scale(1.05);
}

.about-content {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background-color: var(--color-light-gray);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.about-content:hover {
  transform: translateY(-10px);
}

.about-content h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

/* ===== Projects Section ===== */
.projects-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-light-gray);
}

.project-card {
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.project-card:hover {
  transform: translateY(-15px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  position: relative;
  width: 100%;
  overflow: hidden;
  height: 250px;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .card-image img {
  transform: scale(1.1);
}

.card-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
}

.card-content h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

/* ===== Resources Section ===== */
.resources-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-white);
}

.resource-card {
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.resource-card .card-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.resource-card .card-title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.resource-card .btn {
  margin-top: auto;
}

/* ===== Clientele Section ===== */
.clientele-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-light-gray);
}

.testimonial-card {
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.testimonial-card .card-image {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  height: auto;
}

.testimonial-card .card-image img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid var(--color-white);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.testimonial-card:hover .card-image img {
  transform: scale(1.1);
}

.testimonial-position {
  font-size: 0.9rem;
  color: var(--color-tertiary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 1rem;
}

.testimonial-rating {
  color: var(--color-accent);
  font-size: 1.2rem;
  letter-spacing: 2px;
}

/* ===== FAQ Section ===== */
.faq-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-white);
}

.accordion-item {
  border: none;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.accordion-item:hover {
  box-shadow: var(--shadow-md);
}

.accordion-button {
  padding: 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
}

.accordion-button:not(.collapsed) {
  color: var(--color-primary);
  background-color: rgba(255, 62, 0, 0.05);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}

.accordion-body {
  padding: 1.5rem;
  background-color: var(--color-light-gray);
}

.accordion-body ul {
  padding-left: 1.5rem;
}

.accordion-body li {
  margin-bottom: 0.5rem;
}

/* ===== Contact Section ===== */
.contact-section {
  position: relative;
  padding: 5rem 0;
  background-color: var(--color-light-gray);
}

.contact-info {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  height: 100%;
}

.contact-info h3 {
  font-size: 1.75rem;
  margin-bottom: 2rem;
  color: var(--color-primary);
}

.info-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.info-item i {
  margin-right: 1rem;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.info-item p {
  margin-bottom: 0;
}

.map-container {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.contact-form-container {
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  height: 100%;
}

.contact-form-container h3 {
  font-size: 1.75rem;
  margin-bottom: 2rem;
  color: var(--color-primary);
}

.form-control, .form-select {
  border: 2px solid var(--color-medium-gray);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  font-family: var(--font-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.25rem rgba(255, 62, 0, 0.25);
}

/* ===== Footer ===== */
.footer {
  position: relative;
  background-color: var(--color-dark-gray);
  color: var(--color-white);
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.footer h4, .footer h5 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer h4::after, .footer h5::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.footer p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--color-primary-light);
  text-decoration: none;
  transform: translateX(5px);
}

.footer hr {
  border-color: rgba(255, 255, 255, 0.1);
}

/* Cookie Consent */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-black);
  color: var(--color-white);
  padding: 1rem;
  z-index: 9999;
  display: none;
  box-shadow: var(--shadow-lg);
}

.cookie-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cookie-content p {
  margin-bottom: 0;
  flex: 1;
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.success-content {
  max-width: 600px;
  padding: 3rem;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.success-icon {
  font-size: 5rem;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

/* Terms & Privacy Pages */
.terms-page, .privacy-page {
  padding-top: 100px;
  padding-bottom: 5rem;
}

.terms-content, .privacy-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
}

/* Анимированный фон и эффекты */
@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.animated-bg {
  background-size: 200% 200%;
  animation: gradient-shift 15s ease infinite;
}

/* Медиа-запросы */
@media (max-width: 992px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons .btn {
    margin-bottom: 1rem;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .about-content, .contact-info, .contact-form-container {
    padding: 1.5rem;
  }
  
  .info-item {
    flex-direction: column;
  }
  
  .info-item i {
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 576px) {
  .hero-section h1 {
    font-size: 1.75rem;
  }
  
  .hero-section .lead {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .btn, button, input[type="submit"] {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
}

/* Анимации для частиц */
.particle {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
}

@keyframes float-up {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(-500px) rotate(360deg);
    opacity: 0;
  }
}