/**
 * PARVATHI TRAVELS - CINEMATIC ANIMATED PRELOADER
 * Dark luxury aesthetic featuring flapping bird wings, magical left-to-right
 * text reveal, and an unclipped, perfectly synchronized golden star sparkle.
 * Stacked brand lockup: PARVATHI on top, TRAVELS below.
 */

/* 1. Fullscreen Fixed Overlay */
.preloader-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 50% 50%, #0d1e35 0%, #081322 60%, #040911 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999999;
  pointer-events: auto;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 700ms cubic-bezier(0.16, 1, 0.3, 1),
              visibility 700ms;
}

/* Prevent body scrolling while preloader is active */
body.preloader-active {
  overflow: hidden !important;
}

/* 2. Soft Ambient Golden Backlight */
.preloader-ambient-glow {
  position: absolute;
  width: clamp(280px, 45vw, 520px);
  height: clamp(180px, 30vw, 320px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(197, 155, 39, 0.16) 0%, rgba(212, 175, 55, 0.06) 45%, rgba(8, 19, 34, 0) 70%);
  filter: blur(40px);
  pointer-events: none;
  animation: preloaderAmbientPulse 3.2s ease-in-out infinite alternate;
}

@keyframes preloaderAmbientPulse {
  0% {
    opacity: 0.55;
    transform: scale(0.92);
  }
  100% {
    opacity: 1;
    transform: scale(1.08);
  }
}

/* 3. Centered Stage & Container */
.preloader-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2.4vw, 24px);
  padding: 1.5rem;
  max-width: 94vw;
  animation: preloaderStageEntrance 550ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes preloaderStageEntrance {
  0% {
    opacity: 0;
    transform: scale(0.92) translate3d(0, 10px, 0);
  }
  100% {
    opacity: 1;
    transform: scale(1) translate3d(0, 0, 0);
  }
}

/* 4. Layered Logo & Flapping Wings */
.preloader-logo-wrap {
  position: relative;
  width: clamp(52px, 7.2vw, 86px);
  height: clamp(50px, 7vw, 82px);
  flex-shrink: 0;
  /* Elevated slightly so bird's top apex levels with top of PARVATHI and matches total height */
  margin-top: clamp(-6px, -0.7vw, -10px);
  animation: preloaderBirdGlide 2s ease-in-out infinite;
}

/* Bird Body & Letter P (Stable Foundation) */
.preloader-bird-body {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 14px rgba(197, 155, 39, 0.35));
  z-index: 1;
}

/* Bird Wing (Flapping Layer with Natural Shoulder Pivot) */
.preloader-bird-wing {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 2;
  /* Shoulder Joint Pivot: x ~ 54%, y ~ 53.5% */
  transform-origin: 54% 53.5%;
  animation: preloaderWingFlap 1200ms cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  filter: drop-shadow(0 2px 10px rgba(229, 190, 88, 0.45));
}

/* Natural, Organic Wing Flapping Cycle */
@keyframes preloaderWingFlap {
  0% {
    transform: rotateZ(0deg) scale3d(1, 1, 1);
  }
  22% {
    /* Upstroke initiation */
    transform: rotateZ(-8deg) scale3d(0.98, 1.05, 1) translate3d(-1px, -2px, 0);
  }
  45% {
    /* Apex of wing rise */
    transform: rotateZ(-12deg) scale3d(0.96, 1.08, 1) translate3d(-2px, -3px, 0);
  }
  70% {
    /* Downstroke power thrust */
    transform: rotateZ(7deg) scale3d(1.02, 0.95, 1) translate3d(1px, 2px, 0);
  }
  88% {
    /* Recovery glide */
    transform: rotateZ(2deg) scale3d(1.01, 0.98, 1) translate3d(0, 1px, 0);
  }
  100% {
    transform: rotateZ(0deg) scale3d(1, 1, 1);
  }
}

/* Aerodynamic Body Lift Modulation */
@keyframes preloaderBirdGlide {
  0%, 100% {
    transform: translate3d(0, 0, 0);
  }
  45% {
    /* Slight aerodynamic dip at wing apex */
    transform: translate3d(0, 2px, 0);
  }
  70% {
    /* Subtle thrust lift as wings power downwards */
    transform: translate3d(0, -2px, 0);
  }
}

/* 5. Brand Typography & Magical Reveal Track (Stacked Lockup) */
.preloader-text-container {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  width: max-content;
  max-width: 100%;
}

/* Masked Track for Left-to-Right Reveal */
.preloader-text-track {
  position: relative;
  width: 100%;
  overflow: visible;
  clip-path: inset(0 100% 0 0);
  animation: preloaderTextRevealLtr 1400ms cubic-bezier(0.25, 1, 0.35, 1) 400ms forwards;
}

@keyframes preloaderTextRevealLtr {
  0% {
    clip-path: inset(0 100% 0 0);
  }
  100% {
    clip-path: inset(0 0% 0 0);
  }
}

/* Brand Title Layout: PARVATHI on top, TRAVELS below */
.preloader-brand-title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  white-space: nowrap;
  user-select: none;
  line-height: 1;
}

.preloader-word-parvathi {
  font-family: var(--font-serif-display, 'Cinzel', Georgia, serif);
  font-size: clamp(1.6rem, 4.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #ffffff 0%, #f7eed8 25%, #d4af37 60%, #c59b27 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 20px rgba(197, 155, 39, 0.35);
  line-height: 1.05;
  display: block;
}

.preloader-word-travels {
  font-family: var(--font-display, 'Plus Jakarta Sans', sans-serif);
  font-size: clamp(0.72rem, 1.8vw, 1.15rem);
  font-weight: 800;
  letter-spacing: 0.38em;
  background: linear-gradient(135deg, #e5be58 0%, #d4af37 50%, #c59b27 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  text-transform: uppercase;
  margin-top: clamp(2px, 0.5vw, 5px);
  display: block;
}

/* 6. The Perfected UNCLIPPED Sparkle Track (Sibling to text-track, NEVER clipped) */
.preloader-sparkle-track {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: visible;
  z-index: 10;
}

.preloader-sparkle-rider {
  position: absolute;
  top: 50%;
  left: 0%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: preloaderSparkleTravel 1400ms cubic-bezier(0.25, 1, 0.35, 1) 400ms forwards;
}

@keyframes preloaderSparkleTravel {
  0% {
    left: 0%;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.3) rotate(0deg);
  }
  6% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(15deg);
  }
  82% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.05) rotate(180deg);
  }
  92% {
    left: 100%;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.4) rotate(225deg);
  }
  96% {
    left: 100%;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.6) rotate(270deg);
  }
  100% {
    left: 100%;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(360deg);
  }
}

/* Radiant Sparkle Flare Core */
.preloader-sparkle-core {
  position: relative;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sparkle-halo {
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 248, 220, 0.95) 0%, rgba(229, 190, 88, 0.55) 45%, rgba(197, 155, 39, 0) 75%);
  filter: blur(3px);
}

.sparkle-star-svg {
  position: relative;
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 1)) drop-shadow(0 0 16px rgba(229, 190, 88, 0.9));
}

/* Vertical light beam on leading edge spanning both stacked words */
.sparkle-edge-beam {
  position: absolute;
  top: -18px;
  bottom: -18px;
  width: 2.5px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 245, 200, 0.95) 30%, rgba(255, 255, 255, 1) 50%, rgba(255, 245, 200, 0.95) 70%, rgba(255, 255, 255, 0) 100%);
  filter: blur(0.5px);
  box-shadow: 0 0 10px rgba(229, 190, 88, 0.85);
}

/* 7. Dismiss Transition */
.preloader-overlay.is-loaded {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.02);
  pointer-events: none;
}

/* 8. Full Responsive Adaptations */
@media (max-width: 600px) {
  .preloader-stage {
    gap: clamp(10px, 2.5vw, 16px);
    padding: 1rem;
  }
  .preloader-logo-wrap {
    width: clamp(44px, 12vw, 60px);
    height: clamp(42px, 11.5vw, 56px);
    margin-top: -5px;
  }
  .preloader-word-parvathi {
    font-size: clamp(1.4rem, 5.2vw, 1.95rem);
    letter-spacing: 0.1em;
  }
  .preloader-word-travels {
    font-size: clamp(0.64rem, 2.2vw, 0.88rem);
    letter-spacing: 0.32em;
    margin-top: 2px;
  }
}

@media (max-width: 360px) {
  .preloader-stage {
    gap: 8px;
    padding: 0.75rem;
  }
  .preloader-logo-wrap {
    width: 38px;
    height: 36px;
    margin-top: -4px;
  }
  .preloader-word-parvathi {
    font-size: 1.25rem;
    letter-spacing: 0.08em;
  }
  .preloader-word-travels {
    font-size: 0.58rem;
    letter-spacing: 0.26em;
  }
}

/* 9. Accessibility: Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .preloader-stage,
  .preloader-bird-wing,
  .preloader-logo-wrap,
  .preloader-ambient-glow,
  .preloader-text-track,
  .preloader-sparkle-rider {
    animation: none !important;
    clip-path: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .preloader-sparkle-rider {
    display: none !important;
  }
}