/* skydiving.su — shared styles */

/* CSS variables */
:root {
  --color-primary: #0a4fa3;
  --color-primary-dark: #073b7a;
  --color-secondary: #ff6b00;
  --color-secondary-dark: #cc5500;
  --color-accent: #00a8e8;
  --color-dark: #1a1a2e;
  --color-gray: #4a4a5a;
  --color-light: #f4f7fb;
  --color-white: #ffffff;
  --font-heading: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.18);
  --transition: 0.25s ease;
  --container: 1200px;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-dark);
  background: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--color-dark);
}

p {
  margin: 0 0 1rem;
}

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

a:hover {
  text-decoration: underline;
}

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

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

button {
  font-family: inherit;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1001;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--color-secondary);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-primary);
}

.logo__icon {
  width: 2.5rem;
  height: 2.5rem;
  fill: var(--color-secondary);
}

.logo:hover {
  text-decoration: none;
}

/* Navigation */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-dark);
  padding: 0.5rem 0;
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: width var(--transition);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--color-primary);
}

.menu-toggle__icon {
  width: 2rem;
  height: 2rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  padding: 7rem 1.25rem 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--color-primary);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(10, 79, 163, 0.82), rgba(26, 26, 46, 0.72));
}

.hero__content {
  max-width: 800px;
  animation: fadeInUp 0.8s ease both;
}

.hero__title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  margin-bottom: 2rem;
  opacity: 0.95;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.8rem;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-secondary);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(255, 107, 0, 0.35);
}

.btn--primary:hover {
  background: var(--color-secondary-dark);
  box-shadow: 0 6px 20px rgba(255, 107, 0, 0.45);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.8);
}

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

.btn--small {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

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

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2.5rem;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section__lead {
  font-size: 1.1rem;
  color: var(--color-gray);
}

/* Two column layout */
.two-col {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 768px) {
  .two-col {
    grid-template-columns: 1fr 1fr;
  }
}

.two-col__image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.two-col__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

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

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.card__body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.card__text {
  color: var(--color-gray);
  margin-bottom: 1rem;
  flex: 1;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.gallery__item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  background: var(--color-light);
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery__item:hover img {
  transform: scale(1.06);
}

/* Gallery filter */
.gallery-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.gallery-filter__btn {
  cursor: pointer;
}

.gallery-filter__btn.btn--outline {
  color: var(--color-dark) !important;
  border-color: var(--color-gray) !important;
}

.gallery-filter__btn.btn--outline:hover {
  color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
}

.gallery-filter__btn.btn--primary {
  color: var(--color-white) !important;
}

.gallery__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: var(--color-white);
  font-weight: 600;
  transform: translateY(100%);
  transition: transform var(--transition);
}

.gallery__item:hover .gallery__caption {
  transform: translateY(0);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  padding: 1rem;
}

.lightbox--open {
  display: flex;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-sm);
}

.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  border: 0;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Lists and details */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 800;
}

.numbered-list {
  list-style: decimal inside;
  padding-left: 0;
}

.numbered-list li {
  padding-left: 0;
  margin-bottom: 0.75rem;
}

/* Contacts */
.contacts-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .contacts-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.contact-card h3 {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.contact-card a {
  color: var(--color-primary);
  font-weight: 600;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--color-light);
  color: var(--color-primary);
  font-weight: 700;
  transition: background var(--transition), color var(--transition);
}

.social-links a:hover {
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

.map-placeholder {
  aspect-ratio: 16 / 9;
  background: var(--color-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray);
  font-weight: 600;
}

/* Footer */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0 1.5rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.85);
}

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

.footer__grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer__title {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
  padding: 0;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 767px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav--open {
    max-height: 400px;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
  }

  .site-nav__link {
    display: block;
    padding: 0.85rem 1.25rem;
    width: 100%;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    background: var(--color-light);
  }

  .hero {
    min-height: auto;
    padding-top: 7rem;
    padding-bottom: 4rem;
  }

  .section {
    padding: 3rem 0;
  }

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

@media (max-width: 480px) {
  .gallery {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}