/**
 * PARVATHI TRAVELS - BASE STYLES & RESET
 * Bright 50/50 balanced theme, fluid typography, clean modern scrollbar, and section background utilities.
 */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Invisible Modern Scrollbar */
  scrollbar-width: none;
  -ms-overflow-style: none;
  overflow-x: hidden;
}

::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

:focus-visible {
  outline: 2px solid var(--blue-royal);
  outline-offset: 3px;
}

/* Typography Hierarchy (Refined Luxury Serif + Modern Sans) */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif-display);
  font-weight: 700;
  color: var(--color-text-heading);
  line-height: 1.25;
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

h3 {
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

p {
  color: var(--color-text-muted);
  font-size: clamp(0.96rem, 1.1vw, 1.05rem);
  line-height: 1.7;
}

.font-serif-quote {
  font-family: var(--font-serif-quote);
  font-style: italic;
}

/* Ornamental Lines & Heritage Dividers */
.ornament-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem auto;
  max-width: 240px;
}

.ornament-divider::before,
.ornament-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-gold-gradient);
  opacity: 0.6;
}

.ornament-diamond {
  width: 6px;
  height: 6px;
  background-color: var(--color-gold);
  transform: rotate(45deg);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  user-select: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

/* Containers */
.site-container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.2rem, 3vw, 2.5rem);
  padding-right: clamp(1.2rem, 3vw, 2.5rem);
}

.site-container-compact {
  width: 100%;
  max-width: var(--container-compact-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.2rem, 3vw, 2rem);
  padding-right: clamp(1.2rem, 3vw, 2rem);
}

/* Section Background Alternations (Warm Sandstone & Rich Midnight) */
.section-bg-white {
  background-color: var(--bg-white);
}

.section-bg-soft {
  background-color: var(--color-sandstone-soft);
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-blue-tint {
  background-color: #edf4f9;
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-navy {
  background-color: var(--color-midnight-rich);
  color: var(--color-text-on-dark);
}

.section-bg-navy h1,
.section-bg-navy h2,
.section-bg-navy h3,
.section-bg-navy h4 {
  color: var(--color-text-on-dark);
}

.section-bg-navy p {
  color: var(--color-text-muted-on-dark);
}

/* ==========================================================================
   Scenic Travel Backgrounds with Balanced Protective Overlays
   Ensures 100% legibility of foreground headings, cards, and buttons
   ========================================================================== */
.section-bg-scenic-highway {
  position: relative;
  background-image: url('../assets/backgrounds/bg-scenic-highway.jpg');
  background-size: cover;
  background-position: center 38%;
  background-repeat: no-repeat;
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-scenic-highway::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250, 246, 238, 0.86) 0%, rgba(250, 246, 238, 0.80) 50%, rgba(250, 246, 238, 0.89) 100%);
  pointer-events: none;
  z-index: 1;
}

.section-bg-tea-hills {
  position: relative;
  background-image: url('../assets/backgrounds/bg-mountain-highway.jpg');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-tea-hills::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250, 246, 238, 0.88) 0%, rgba(250, 246, 238, 0.82) 50%, rgba(250, 246, 238, 0.90) 100%);
  pointer-events: none;
  z-index: 1;
}

.section-bg-kerala-backwaters {
  position: relative;
  background-image: url('../assets/backgrounds/bg-kerala-backwaters.jpg');
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-kerala-backwaters::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250, 246, 238, 0.86) 0%, rgba(250, 246, 238, 0.80) 50%, rgba(250, 246, 238, 0.88) 100%);
  pointer-events: none;
  z-index: 1;
}

.section-bg-temple-heritage {
  position: relative;
  background-image: url('../assets/backgrounds/bg-temple-heritage.jpg');
  background-size: cover;
  background-position: center 35%;
  background-repeat: no-repeat;
  border-top: 1px solid var(--border-gold-subtle);
  border-bottom: 1px solid var(--border-gold-subtle);
}

.section-bg-temple-heritage::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250, 246, 238, 0.88) 0%, rgba(250, 246, 238, 0.82) 50%, rgba(250, 246, 238, 0.90) 100%);
  pointer-events: none;
  z-index: 1;
}

/* Ensure content sits above backdrop overlay */
.section-bg-scenic-highway > *,
.section-bg-tea-hills > *,
.section-bg-kerala-backwaters > *,
.section-bg-temple-heritage > * {
  position: relative;
  z-index: 2;
}

/* Section Header Typography */
.section-header {
  margin-bottom: clamp(2.5rem, 4.5vw, 3.5rem);
  position: relative;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.6rem;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1.5px;
  background-color: var(--color-gold);
}

.section-bg-navy .section-tag {
  color: var(--color-gold-bright);
}

.section-bg-navy .section-tag::before {
  background-color: var(--color-gold-bright);
}

.section-title {
  margin-bottom: 0.75rem;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
}

.section-subtitle {
  color: var(--color-text-muted);
  max-width: 660px;
  font-size: 1.02rem;
  line-height: 1.65;
}

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Full-Viewport Photographic Page Banners
   ========================================================================== */
.page-banner {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100svh;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--nav-height);
  padding-bottom: 0;
  margin: 0;
  box-sizing: border-box;
  overflow: hidden;
  background-color: var(--color-midnight);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  color: #ffffff;
  border-bottom: none;
  text-align: center;
}

/* Atmospheric luxury gradient overlay for optimal text legibility */
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, 
    rgba(8, 19, 34, 0.78) 0%, 
    rgba(8, 19, 34, 0.54) 50%, 
    rgba(8, 19, 34, 1) 100%);
  pointer-events: none;
  z-index: 1;
}

/* Bottom luxury gold horizon accent - disabled to seamlessly merge into marquee ribbon with zero gap */
.page-banner::after {
  display: none;
}

.page-banner > .site-container {
  position: relative;
  z-index: 3;
}

/* Breadcrumb Navigation */
.banner-breadcrumbs {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
}

.banner-breadcrumb-link {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.banner-breadcrumb-link:hover {
  color: var(--color-gold-bright);
}

.banner-breadcrumb-sep {
  color: var(--color-gold-bright);
  font-size: 0.75rem;
}

.banner-breadcrumb-current {
  color: var(--color-gold-bright);
}

.page-banner .section-tag {
  color: var(--color-gold-bright);
}

.page-banner .section-tag::before {
  background-color: var(--color-gold-bright);
}

.page-banner-title {
  font-family: var(--font-serif-display);
  font-size: clamp(2.3rem, 4.4vw, 3.6rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.18;
  margin-bottom: 0.85rem;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

.page-banner-desc {
  max-width: 680px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(0.98rem, 1.8vw, 1.12rem);
  line-height: 1.65;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}

/* Page-Specific Unique Photographic Banner Backgrounds */
.page-banner-about {
  background-image: url('../assets/backgrounds/bg-tea-hills.jpg');
  background-position: center 38%;
}

.page-banner-services {
  background-image: url('../assets/backgrounds/bg-mountain-highway.jpg');
  background-position: center 35%;
}

.page-banner-vehicles {
  background-image: url('../assets/backgrounds/bg-scenic-highway.jpg');
  background-position: center 36%;
}

.page-banner-tours {
  background-image: url('../assets/backgrounds/bg-temple-heritage.jpg');
  background-position: center 30%;
}

.page-banner-contact {
  background-image: url('../assets/backgrounds/bg-kerala-backwaters.jpg');
  background-position: center 42%;
}

/* ==========================================================================
   Cinematic AOS Engine: Smooth, Regal & Classy Scroll Transitions
   GPU-accelerated with optical depth-of-field and silky cubic-bezier deceleration.
   ========================================================================== */
[data-aos] {
  opacity: 0;
  transition-property: transform, opacity, filter;
  transition-duration: 850ms;
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity, filter;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* 1. Cinematic Fade Variations */
[data-aos="fade-up"] {
  transform: translate3d(0, 36px, 0);
  filter: blur(4px);
}

[data-aos="fade-down"] {
  transform: translate3d(0, -32px, 0);
  filter: blur(4px);
}

[data-aos="fade-right"] {
  transform: translate3d(-38px, 0, 0);
  filter: blur(4px);
}

[data-aos="fade-left"] {
  transform: translate3d(38px, 0, 0);
  filter: blur(4px);
}

/* 2. Cinematic Zoom Variations */
[data-aos="zoom-in"] {
  transform: scale3d(0.94, 0.94, 1) translate3d(0, 20px, 0);
  filter: blur(4px);
}

[data-aos="zoom-in-up"] {
  transform: translate3d(0, 36px, 0) scale3d(0.96, 0.96, 1);
  filter: blur(4px);
}

[data-aos="zoom-out"] {
  transform: scale3d(1.06, 1.06, 1);
  filter: blur(4px);
}

/* 3. Pure Fade / Optical Reveal */
[data-aos="fade"] {
  transform: translate3d(0, 0, 0);
  filter: blur(6px);
}

/* 4. Cinematic Flip Up (Classy Card Elevation) */
[data-aos="flip-up"] {
  transform: perspective(1000px) rotateX(10deg) translate3d(0, 28px, 0);
  filter: blur(3px);
}

/* Active State: Crystallizes into Pristine 100% Clarity */
[data-aos].aos-animate {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale3d(1, 1, 1) rotateX(0deg);
  filter: none;
}

/* Granular Staggered Delays for Rhythmic Choreography */
[data-aos-delay="50"]  { transition-delay: 50ms; }
[data-aos-delay="100"] { transition-delay: 100ms; }
[data-aos-delay="150"] { transition-delay: 150ms; }
[data-aos-delay="200"] { transition-delay: 200ms; }
[data-aos-delay="250"] { transition-delay: 250ms; }
[data-aos-delay="300"] { transition-delay: 300ms; }
[data-aos-delay="350"] { transition-delay: 350ms; }
[data-aos-delay="400"] { transition-delay: 400ms; }
[data-aos-delay="450"] { transition-delay: 450ms; }
[data-aos-delay="500"] { transition-delay: 500ms; }
[data-aos-delay="600"] { transition-delay: 600ms; }
[data-aos-delay="700"] { transition-delay: 700ms; }
[data-aos-delay="800"] { transition-delay: 800ms; }

/* Cinematic Duration Modifiers */
[data-aos-duration="600"]  { transition-duration: 600ms; }
[data-aos-duration="800"]  { transition-duration: 800ms; }
[data-aos-duration="950"]  { transition-duration: 950ms; }
[data-aos-duration="1100"] { transition-duration: 1100ms; }
[data-aos-duration="1300"] { transition-duration: 1300ms; }

/* Accessibility: Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  [data-aos],
  [data-aos].aos-animate {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}