:root {
  --color-primary: #1E40AF;
  --color-soft: #93C5FD;
  --color-background: #F3F4F6;
  --color-text: #1F2937;
  --color-muted: #6B7280;
  --color-accent: #34D399;
  --color-white: #FFFFFF;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-soft: 0 15px 35px rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.card img {
  height: 220px;
}

.container {
  width: min(1200px, 100% - 2rem);
  margin: 0 auto;
}

main {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
  padding: 1.5rem 0 3rem;
}

header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  z-index: 10;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
}

.logo {
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

nav {
  gap: 1.5rem;
  font-size: 0.95rem;
}

nav a {
  color: var(--color-muted);
  font-weight: 500;
  transition: color 0.25s ease;
}

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

.desktop-nav {
  display: none;
}

.mobile-only {
  display: flex;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.3s ease;
}

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

.btn-primary:hover {
  background: #122867;
  transform: translateY(-2px);
}

.hero .btn {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 600;
  border-radius: var(--radius-md);
}

.hero .btn:hover {
  background: #f1f5f9;
  transform: translateY(-2px);
}

.hero {
  margin-top: 1.25rem;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 3vw, 3rem);
  box-shadow: var(--shadow-soft);
  background-image: linear-gradient(135deg, rgba(30, 64, 175, 0.92), rgba(147, 197, 253, 0.82)),
    url("assets/images/alexandr-podvalny-tE7_jvK-_YU-unsplash.jpg");
  background-size: cover;
  background-position: center;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.4), rgba(15, 23, 42, 0.75));
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: min(560px, 100%);
}

.hero-content h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  margin-bottom: 1rem;
}

.hero-content p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
}

.hero-content h1,
.hero-content h2 {
  color: var(--color-white);
}

.hero .section-title {
  color: rgba(226, 232, 240, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

section {
  margin-top: 2.5rem;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.grid-3,
.grid-2,
.grid-4 {
  display: grid;
  gap: 1.5rem;
  align-items: stretch;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  grid-auto-rows: 1fr;
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  grid-auto-rows: 1fr;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 100%;
}

.card h3 {
  font-size: 1.15rem;
  color: var(--color-text);
}

.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.card .card-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--color-primary);
}

.card button,
.card .link-btn {
  background: transparent;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  font-weight: 600;
}

.card button:hover,
.card .link-btn:hover {
  color: #122867;
}

.cta-block {
  background: linear-gradient(135deg, var(--color-primary), #1627b6);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  margin-bottom: 3rem;
}

.cta-block h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta-block p {
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.filters button {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(30, 64, 175, 0.2);
  padding: 0.5rem 1rem;
  background: var(--color-white);
  color: var(--color-text);
  cursor: pointer;
  font-weight: 500;
}

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

.hero-fade,
.magic-slide {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

.hero-slide {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(6px);
  display: none;
  justify-content: flex-end;
  z-index: 20;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu nav {
  background: var(--color-white);
  min-width: 220px;
  padding: 2rem 1.5rem;
  border-radius: 0 0 0 var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-menu nav a {
  font-weight: 600;
  color: var(--color-text);
  opacity: 0.9;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 24px;
  height: 3px;
  background: var(--color-text);
  border-radius: 999px;
  transition: transform 0.3s ease;
}

.footer {
  padding: 3rem 1rem;
  background: #0f172a;
  color: var(--color-white);
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  width: min(1200px, 100% - 2rem);
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: flex-start;
}

.footer h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  display: inline-block;
  margin-bottom: 0.25rem;
}

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

.footer-note {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

main section ul {
  margin-left: 1rem;
  padding-left: 1rem;
  color: var(--color-muted);
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
}

.contact-section {
  background: var(--color-white);
  border-radius: 30px;
  padding: 2.5rem;
  box-shadow: var(--shadow-soft);
  margin-bottom: 2rem;
}

.contact-grid {
  display: grid;
  gap: 2rem;
}

.contact-panel {
  background: var(--color-soft);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-panel h3 {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.contact-panel p {
  color: var(--color-muted);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid-column {
  display: grid;
  gap: 1rem;
}

.contact-hero {
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
  margin-top: 2rem;
}

.contact-hero-content {
  max-width: 520px;
  color: var(--color-white);
}

.contact-hero-content h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 1rem;
}

.contact-hero-content p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.5rem;
}

.contact-hero .btn {
  background: var(--color-white);
  color: var(--color-primary);
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
}

.contact-hero .btn:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
}

.contact-hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 280px;
  box-shadow: 0 30px 60px rgba(15,23,42,0.35);
  padding: 1rem;
  background: rgba(255, 255, 255, 0.15);
}

.contact-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-form label span {
  color: var(--color-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid rgba(15,23,42,0.2);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  background: #f9fafb;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
}

.contact-section {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-soft);
  margin-top: 2rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  align-items: center;
}

.contact-panel {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid rgba(15,23,42,0.05);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid rgba(15, 23, 42, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  background: #fff;
  font-family: inherit;
}

.contact-form button {
  width: fit-content;
}

.success-message {
  background: #d1fae5;
  border: 1px solid #34d399;
  color: #065f46;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
}

@media (min-width: 640px) {
  .hero {
    padding: 3rem;
  }
}

@media (min-width: 768px) {
  nav {
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 1.5rem;
  }

  .hero {
    min-height: 360px;
  }
}

@media (min-width: 1024px) {
  .desktop-nav {
    display: flex;
  }

  .mobile-only {
    display: none;
  }
}

@media (min-width: 1280px) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(240px, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(4, minmax(210px, 1fr));
  }
}