/* =============================================
   RUPAYAN LAND DEVELOPMENT — MAIN STYLESHEET
   Fully Responsive | Mobile-First
   ============================================= */

/* ── GOOGLE FONTS ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,400&family=Hind+Siliguri:wght@300;400;500;600&display=swap');

/* ── CSS VARIABLES ── */
:root {
  --yellow:       #F5C800;
  --yellow-dark:  #C8A200;
  --yellow-light: #FFF8D6;
  --black:        #111111;
  --dark:         #1A1A1A;
  --dark2:        #242424;
  --gray:         #6B6B6B;
  --gray-light:   #F4F4F2;
  --white:        #FFFFFF;
  --border:       rgba(0,0,0,0.10);
  --border-dark:  rgba(255,255,255,0.08);

  --font-en:      'DM Sans', sans-serif;
  --font-bn:      'Hind Siliguri', sans-serif;
  --font-display: 'Playfair Display', serif;

  --container:    1200px;
  --gap:          24px;
  --radius-sm:    6px;
  --radius-md:    10px;
  --radius-lg:    16px;

  --transition:   0.25s ease;
}

/* ── RESET & BASE ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-en); background: var(--white); color: var(--black); overflow-x: hidden; line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul { list-style: none; }
input, select, textarea { font-family: var(--font-bn); font-size: 14px; }

/* ── CONTAINER ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px)  { .container { padding: 0 32px; } }
@media (min-width: 1024px) { .container { padding: 0 48px; } }
@media (min-width: 1280px) { .container { padding: 0 60px; } }

/* ── PROTOTYPE NAV ── */
.proto-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  background: var(--black);
  border-bottom: 2px solid var(--yellow);
  padding: 0 16px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.proto-nav .proto-label {
  color: var(--yellow);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}
.proto-nav .proto-label.right { display: none; }
@media (min-width: 768px) { .proto-nav .proto-label.right { display: block; } }

.proto-pages {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 1;
}
.proto-pages::-webkit-scrollbar { display: none; }
.proto-pages a {
  color: #666;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  transition: all var(--transition);
}
@media (min-width: 640px) { .proto-pages a { padding: 4px 12px; font-size: 12px; } }
.proto-pages a:hover,
.proto-pages a.active { color: var(--yellow); background: rgba(245,200,0,0.1); }

/* ── SITE HEADER ── */
.site-header {
  position: sticky;
  top: 42px;
  z-index: 100;
  background: var(--dark);
  border-bottom: 1px solid var(--border-dark);
  transition: all 0.3s;
}
.site-header.scrolled {
  background: rgba(26,26,26,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}
@media (min-width: 768px) { .header-inner { height: 68px; } }

/* Logo */
.logo-area { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 34px; height: 34px;
  background: var(--yellow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 18px; height: 18px; }
.logo-text .logo-en {
  color: var(--yellow);
  font-size: 13px; font-weight: 500;
  letter-spacing: 0.5px; line-height: 1;
}
.logo-text .logo-bn {
  font-family: var(--font-bn);
  color: rgba(255,255,255,0.4);
  font-size: 10px; line-height: 1.4;
  display: none;
}
@media (min-width: 480px) { .logo-text .logo-bn { display: block; } }

/* Desktop nav */
.main-nav { display: none; }
@media (min-width: 1024px) {
  .main-nav {
    display: flex; align-items: center; gap: 28px;
  }
  .main-nav a {
    color: rgba(255,255,255,0.65);
    font-size: 13px;
    transition: color var(--transition);
    position: relative; padding-bottom: 2px;
  }
  .main-nav a:hover { color: var(--white); }
  .main-nav a.active { color: var(--white); }
  .main-nav a.active::after {
    content: '';
    position: absolute; bottom: -4px; left: 0; right: 0;
    height: 2px; background: var(--yellow); border-radius: 1px;
  }
}

/* Header CTA */
.header-cta { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.btn-wa {
  display: none;
  align-items: center; gap: 6px;
  background: #25D366; color: var(--white);
  font-size: 12px; font-weight: 500;
  padding: 7px 12px; border-radius: var(--radius-sm);
  transition: opacity var(--transition);
}
.btn-wa:hover { opacity: 0.9; }
@media (min-width: 640px) { .btn-wa { display: flex; } }

.btn-book {
  background: var(--yellow); color: var(--black);
  font-size: 12px; font-weight: 600;
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-family: var(--font-bn);
  transition: background var(--transition);
  white-space: nowrap;
}
@media (min-width: 640px) { .btn-book { font-size: 13px; padding: 9px 18px; } }
.btn-book:hover { background: var(--yellow-dark); }

/* Hamburger */
.hamburger {
  display: flex; flex-direction: column;
  gap: 5px; padding: 6px; cursor: pointer;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: all 0.3s;
}
@media (min-width: 1024px) { .hamburger { display: none; } }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  background: var(--dark2);
  border-top: 1px solid var(--border-dark);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-family: var(--font-bn);
  font-size: 15px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-dark);
  transition: all var(--transition);
}
.mobile-nav a:hover { color: var(--yellow); background: rgba(245,200,0,0.04); }
@media (min-width: 1024px) { .mobile-nav { display: none !important; } }

/* ── PAGE SECTIONS ── */
.page-section { display: none; }
.page-section.active { display: block; }

/* ── COMMON BUTTONS ── */
.btn-primary {
  background: var(--yellow); color: var(--black);
  font-family: var(--font-bn);
  font-size: 14px; font-weight: 600;
  padding: 12px 24px; border-radius: var(--radius-md);
  transition: all var(--transition);
  display: inline-block; text-align: center;
}
.btn-primary:hover { background: var(--yellow-dark); transform: translateY(-1px); }
.btn-outline {
  border: 1.5px solid rgba(255,255,255,0.25);
  color: var(--white);
  font-family: var(--font-bn);
  font-size: 14px;
  padding: 11px 22px; border-radius: var(--radius-md);
  transition: all var(--transition);
  display: inline-block;
}
.btn-outline:hover { border-color: var(--yellow); color: var(--yellow); }
.btn-dark {
  background: var(--black); color: var(--yellow);
  font-family: var(--font-bn);
  font-size: 14px; font-weight: 600;
  padding: 13px 26px; border-radius: var(--radius-md);
  transition: all var(--transition);
  display: inline-block;
}
.btn-dark:hover { background: var(--dark2); transform: translateY(-1px); }

/* ── SECTION HELPERS ── */
.section-pad { padding: 60px 0; }
@media (min-width: 768px) { .section-pad { padding: 80px 0; } }
.section-tag {
  font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--yellow);
  font-weight: 500; margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-display);
  font-size: 28px; line-height: 1.2;
}
@media (min-width: 640px)  { .section-title { font-size: 32px; } }
@media (min-width: 1024px) { .section-title { font-size: 38px; } }
.section-sub {
  font-family: var(--font-bn);
  color: var(--gray); font-size: 14px;
  line-height: 1.8; margin-top: 8px;
}
.section-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  margin-bottom: 36px;
}
.see-all {
  font-size: 13px; color: var(--yellow-dark);
  font-weight: 500; border-bottom: 1px solid var(--yellow);
  padding-bottom: 2px; white-space: nowrap;
  flex-shrink: 0; align-self: flex-end;
  transition: opacity var(--transition);
}
.see-all:hover { opacity: 0.7; }

/* ── FORM ELEMENTS ── */
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-family: var(--font-bn);
  font-size: 12px; color: var(--gray);
  margin-bottom: 5px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px; color: var(--black);
  background: var(--gray-light);
  outline: none;
  transition: border var(--transition), background var(--transition);
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus { border-color: var(--yellow); background: var(--white); }
.form-submit {
  width: 100%;
  background: var(--yellow); color: var(--black);
  font-family: var(--font-bn);
  font-size: 14px; font-weight: 600;
  padding: 13px; border-radius: var(--radius-md);
  transition: background var(--transition);
}
.form-submit:hover { background: var(--yellow-dark); }
.form-note {
  text-align: center;
  font-family: var(--font-bn);
  font-size: 11px; color: var(--gray);
  margin-top: 10px;
}

/* ── DIVIDERS ── */
hr { border: none; border-top: 1px solid var(--border); }
hr.dark { border-color: var(--border-dark); }

/* ── WHATSAPP FLOAT ── */
.wa-float {
  position: fixed; bottom: 20px; right: 20px; z-index: 500;
  width: 50px; height: 50px;
  background: #25D366; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: transform var(--transition);
}
.wa-float:hover { transform: scale(1.1); }
@media (min-width: 768px) { .wa-float { width: 56px; height: 56px; bottom: 28px; right: 28px; } }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.fade-up { animation: fadeUp 0.6s ease forwards; }