/* welcome.css
 * Fullscreen welcome / tour overlay for VeloDrive.
 */

.welcome-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg, #0c0c0c);
  opacity: 1;
  transition: opacity 220ms ease;
}

.welcome-shell {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text-main);
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 24px;
}

@media (max-width: 720px) {
  .welcome-shell {
    padding: 16px;
  }
}

/* Close button */

.welcome-close-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.welcome-close-btn:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text-main);
}

@media (prefers-color-scheme: dark) {
  .welcome-close-btn:hover {
    background: rgba(255, 255, 255, 0.08);
  }
}

/* Slide wrapper (animated) */

.welcome-slide {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-rows: minmax(60px, 0.18fr) 1fr minmax(90px, 0.22fr);
  align-items: center;
  justify-items: center;
  gap: 12px;
  transition: transform 220ms ease, opacity 220ms ease;
  max-width: none;
  padding: 20px 0 52px;
}

.welcome-slide--animating {
  will-change: transform, opacity;
}

/* Header */

.welcome-header {
  text-align: center;
}

.welcome-title {
  font-size: 34px;
  /* 2x-ish */
  font-weight: 600;
  margin: 0;
  color: var(--text-main);
  text-align: center;
}

/* Main: arrows + media */

.welcome-main {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 6px 0 18px;
}

/* Carets at side edge, large clickable area
   Use fixed positioning so they hug the viewport edges. */

.welcome-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  color: var(--text-muted);
  width: 56px;
  height: 56px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 61;
  /* above slide content, still under overlay root */
  transition: opacity 160ms ease;
  opacity: 1;
}

.welcome-overlay:not(.welcome-overlay--visible) .welcome-nav {
  opacity: 0;
  pointer-events: none;
}

.welcome-slide--splash .welcome-nav {
  opacity: 0;
  animation: welcome-nav-boot 280ms ease-out forwards;
  animation-delay: 620ms;
}

@keyframes welcome-nav-boot {
  from {
    opacity: 0;
    transform: translateY(-50%) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(-50%) scale(1);
  }
}

.welcome-nav-prev {
  left: 0;
}

.welcome-nav-next {
  right: 0;
}

.welcome-nav span {
  display: inline-block;
  font-size: 22px;
  line-height: 1;
}

.welcome-nav:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text-main);
}

.welcome-nav:disabled {
  opacity: 0.4;
  cursor: default;
}

@media (prefers-color-scheme: dark) {
  .welcome-nav:hover {
    background: rgba(255, 255, 255, 0.08);
  }
}

/* Media wrapper: square, capped at 60% of viewport width/height */

.welcome-video-wrapper {
  position: relative;
  width: 100%;
  max-width: 60vw;
  max-height: 60vh;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: none;
  /* no visible border */
  background: var(--surface-elevated);
  aspect-ratio: 1 / 1;
  /* square */
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-video {
  width: 100%;
  height: 100%;
  display: none;
  object-fit: contain;
}

/* Large logo for splash */

.welcome-logo {
  display: none;
  max-width: min(40vh, 40vw);
  max-height: min(40vh, 40vw);
  opacity: 0;
}

/* Splash animation (boot-style) */

.welcome-slide--splash .welcome-logo {
  opacity: 0;
  animation: welcome-logo-boot 480ms ease-out forwards;
  animation-delay: 80ms;
}

@keyframes welcome-logo-boot {
  from {
    opacity: 0;
    transform: scale(0.92);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.welcome-slide--splash .welcome-title,
.welcome-slide--splash .welcome-body {
  opacity: 0;
  animation: welcome-text-boot 420ms ease-out forwards;
  animation-delay: 520ms;
}

@keyframes welcome-text-boot {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Body text */

.welcome-body {
  margin: 0;
  font-size: 18px;
  color: var(--text-main);
  line-height: 1.6;
  text-align: center;
  max-width: 60vw;
  min-height: 72px;
  max-height: 132px;
  overflow: auto;
}

.welcome-body-line {
  display: inline-block;
}

/* Icon-only slide (splash) */

.welcome-slide--icon-only .welcome-main {
  max-width: 82vw;
}

.welcome-overlay--splash-only .welcome-nav,
.welcome-overlay--splash-only .welcome-close-btn,
.welcome-overlay--splash-only .welcome-header,
.welcome-overlay--splash-only .welcome-body {
  display: none !important;
}

.welcome-overlay--splash-only .welcome-shell {
  pointer-events: none;
  display: grid;
  place-items: center;
}

.welcome-overlay--splash-only .welcome-slide {
  height: auto;
  padding: 0;
  grid-template-rows: 1fr;
  align-content: center;
}

.welcome-overlay--splash-only .welcome-main {
  padding: 0;
}

.welcome-overlay--hiding {
  opacity: 0;
  pointer-events: none;
}

/* Hide main UI while welcome is active to prevent flash */
body.welcome-active .page-root,
body.welcome-active .bottom-nav {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}


/* Mobile tweaks */

@media (max-width: 720px) {
  .welcome-slide {
    max-width: 100%;
    gap: 14px;
  }

  .welcome-title {
    font-size: 26px;
  }

  .welcome-body {
    font-size: 16px;
  }

  .welcome-video-wrapper {
    max-width: 80vw;
    max-height: 50vh;
  }

  .welcome-logo {
    max-width: min(32vh, 32vw);
    max-height: min(32vh, 32vw);
  }
}