/* ============================================
   INDEX STRUCTURAL STYLES
   Uses semantic tokens from index-themes.css
   ============================================ */

/* Reset + base */
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font-family-base);
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  scroll-behavior: smooth;
}

/* Slideshow container */
.slideshow {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity var(--transition-slow);
  will-change: opacity;
}

.slide-bg.visible {
  opacity: 1;
}

/* Dark overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-overlay);
  z-index: 1;
}

/* First section (hero) */
.center-container {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
  animation: fadeIn 2s ease-out forwards;
  z-index: 2;
  position: relative;
}

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

h1 {
  font-size: clamp(var(--font-size-h1-min), 6vw, var(--font-size-h1-max));
  margin: 0;
  font-weight: 700;
  letter-spacing: 2px;
  text-shadow: 0 3px 10px rgba(0,0,0,0.7);
  animation: floatTitle 6s ease-in-out infinite alternate;
}

@keyframes floatTitle {
  from { transform: translateY(0); }
  to   { transform: translateY(-8px); }
}

p {
  font-size: clamp(var(--font-size-p-min), 3vw, var(--font-size-p-max));
  margin-top: 1rem;
  font-weight: 300;
  text-shadow: 0 2px 6px rgba(0,0,0,0.7);
  opacity: var(--opacity-muted);
}

/* Scroll indicator */
.scroll-indicator {
  color: var(--color-accent-primary);
  position: absolute;
  bottom: 40px;
  font-size: 1rem;
  opacity: 0.8;
  animation: bounce 2s infinite;
  cursor: pointer;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* Second section */
.second-section {
  height: 100vh;
  background: url("/images/bg4.jpg") center center / cover no-repeat fixed;
  padding: 80px 20px;
  text-align: center;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-med), transform var(--transition-med);
  position: relative;
  z-index: 2;
}

.second-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-bg-overlay);
  z-index: 0;
}

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

.second-section h2,
.second-section p,
.link-tile {
  position: relative;
  z-index: 1;
}

.second-section h2 {
  font-size: clamp(var(--font-size-h2-min), 5vw, var(--font-size-h2-max));
  margin-bottom: 20px;
}

.second-section p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
  opacity: var(--opacity-muted);
}

/* Link tile */
.link-tile {
  margin: 40px auto;
  display: block;
  padding: 18px 28px;
  background: var(--color-surface-tile-dark);
  border-radius: var(--radius-tile);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-tile);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  max-width: 320px;
  text-align: center;
}

.link-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-tile-hover);
}

.link-tile a {
  color: var(--color-accent-primary);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Third section */
.services-section {
  height: 100vh;
  background: url("/images/bg5.jpg") center center / cover no-repeat fixed;
  padding: 80px 20px;
  text-align: center;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-med), transform var(--transition-med);
  position: relative;
  z-index: 2;
}

.services-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-bg-overlay);
  z-index: 0;
}

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

.services-section h2 {
  font-size: clamp(var(--font-size-h2-min), 5vw, var(--font-size-h2-max));
  margin-bottom: 40px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: var(--bp-md)) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: var(--bp-sm)) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: var(--color-surface-glass);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-card);
  padding: 40px 20px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.service-card h3 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.5px;
}

.service-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--color-surface-backtotop);
  backdrop-filter: blur(10px);
  padding: 14px 20px;
  border-radius: var(--radius-backtotop);
  border: 1px solid var(--color-border-strong);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.3s ease;
  z-index: 10;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* Footer */
.footer {
  background: var(--color-bg-page);
  text-align: center;
  padding: 30px 0 40px;
  font-size: 1rem;
  opacity: 0;
  animation: footerFade 1.4s ease-out forwards;
  letter-spacing: 0.5px;
  border-top: 1px solid var(--color-border-subtle);
  position: relative;
  z-index: 5;
}

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

.footer-sub {
  color: var(--color-accent-primary);
  margin-top: 6px;
  font-size: 0.95rem;
  opacity: 0.75;
  letter-spacing: 0.6px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

/* Fell icons */
.fell-icon {
  width: 16px;
  height: 12px;
  display: inline-block;
  background: var(--fell-icon-gradient);
  clip-path: polygon(0% 100%, 50% 0%, 100% 100%);
  position: relative;
  opacity: 0.9;
}

.fell-left {
  transform: scale(0.8) translateY(3px);
  margin-right: -4px;
}

.fell-center {
  transform: scale(1) translateY(0);
  margin-right: -4px;
  margin-left: -4px;
}

.fell-right {
  transform: scale(0.9) translateY(2px);
  margin-left: -4px;
}

.fell-icon::before {
  content: "";
  position: absolute;
  inset: -5px;
  background: radial-gradient(
    circle,
    rgba(var(--color-fell-icon-rgb), 0.25),
    transparent 70%
  );
  filter: blur(5px);
  z-index: -1;
}