/* ================================
   Layout Utilities
   ================================ */

/* Scroll Progress Indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 9999;
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary), var(--color-accent-teal));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s ease-out;
  box-shadow: 0 0 10px rgba(91, 159, 215, 0.5);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
  overflow: visible;
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* Section */
.section {
  padding: var(--space-24) 0;
  overflow: visible;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scroll reveal for sections */
.section.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
}

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

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .section.scroll-reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-16) 0;
  }
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

/* Spacing utilities */
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Theme transition */
.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
  transition: background-color var(--duration-base) var(--ease-smooth),
              color var(--duration-base) var(--ease-smooth),
              border-color var(--duration-base) var(--ease-smooth) !important;
}

/* Section Variants */
.section-alt {
  background-color: var(--color-bg-secondary);
  position: relative;
}

/* Section Dividers */
.section-divider {
  position: relative;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
  background: linear-gradient(
    180deg,
    var(--color-bg-secondary) 0%,
    var(--color-bg-primary) 100%
  );
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Scroll reveal for section dividers */
.section-divider.scroll-reveal {
  opacity: 0;
  transform: translateY(-20px);
}

.section-divider.scroll-reveal.reveal {
  opacity: 1;
  transform: translateY(0);
}

.divider-line {
  position: absolute;
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-border) 30%,
    var(--color-border) 70%,
    transparent 100%
  );
  top: 50%;
  transform: translateY(-50%);
}

.divider-dot {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  z-index: 1;
  font-family: var(--font-family-mono);
  font-size: 20px;
  font-weight: 300;
}

.divider-dot::before {
  content: '[';
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.divider-dot::after {
  content: ']';
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* Center dot */
.divider-dot > span {
  width: 7px;
  height: 7px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(91, 159, 215, 0.3);
}

/* Reverse gradient for alt sections */
.section-alt + .section-divider {
  background: linear-gradient(
    180deg,
    var(--color-bg-primary) 0%,
    var(--color-bg-secondary) 100%
  );
}

@media (max-width: 768px) {
  .section-divider {
    height: 80px;
  }

  .divider-dot {
    font-size: 16px;
    gap: 6px;
  }

  .divider-dot > span {
    width: 5px;
    height: 5px;
  }
}

/* Simple Chevron Divider */
.section-divider-simple {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) 0;
  opacity: 0.3;
  transition: opacity 0.3s ease, transform 0.3s ease;
  width: 100%;
  text-align: center;
}

.section-divider-simple:hover {
  opacity: 0.6;
}

.section-divider-simple svg {
  color: var(--color-text-tertiary);
  margin: 0 auto;
  animation: gentle-pulse 3s ease-in-out infinite;
}

/* Gentle pulse animation for divider */
@keyframes gentle-pulse {
  0%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 0.6;
    transform: translateY(3px);
  }
}

/* Scroll reveal state for dividers */
.section-divider-simple.scroll-reveal {
  opacity: 0;
  transform: translateY(-20px);
}

.section-divider-simple.scroll-reveal.reveal {
  opacity: 0.3;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .section-divider-simple svg {
    animation: none;
  }

  .section-divider-simple.scroll-reveal {
    opacity: 0.3;
    transform: none;
  }
}

@media (max-width: 768px) {
  .section-divider-simple {
    padding: var(--space-4) 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .section-divider-simple svg {
    width: 24px;
    height: 24px;
  }
}