/* ============================================================
   SKYMARK ONE — Sector 98, Noida Expressway
   Airy sky glass. Sora + Outfit. Cloud gradients, frosted
   glass cards, and an altitude ticker up the skyline.
   ============================================================ */

:root {
  --sky-high: #c9e2fa;
  --sky-mid: #e8f3fd;
  --sky-low: #ffffff;
  --air: #f4f9ff;
  --ink: #14263d;
  --grey: #5d7189;
  --blue: #1f7ae0;
  --blue-deep: #135cb0;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-edge: rgba(255, 255, 255, 0.85);
  --glass-shadow: 0 18px 50px rgba(110, 155, 205, 0.25);
  --display: 'Sora', sans-serif;
  --body-font: 'Outfit', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--body-font);
  font-size: 17.5px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--ink);
  background: var(--air);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

img { display: block; max-width: 100%; }

/* ---------- Preloader ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 200;
  background: linear-gradient(180deg, var(--sky-high), var(--sky-mid) 60%, var(--sky-low));
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
.preloader.done { opacity: 0; visibility: hidden; }
.preloader__mark {
  font-family: var(--display); font-weight: 700; font-size: 26px;
  letter-spacing: 0.28em; color: var(--ink); text-align: center;
}
.preloader__alt {
  display: block; margin-bottom: 12px;
  font-family: var(--body-font); font-weight: 500; font-size: 12px;
  letter-spacing: 0.3em; color: var(--blue);
}

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2.5px; width: 0;
  background: linear-gradient(90deg, var(--blue), #6db4f5); z-index: 150;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.55);
  border-bottom: 1px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.nav.scrolled { background: rgba(255, 255, 255, 0.85); box-shadow: 0 8px 30px rgba(110, 155, 205, 0.15); }
.nav__inner {
  max-width: 1160px; margin: 0 auto; padding: 16px 28px;
  display: flex; align-items: center; gap: 30px;
}
.nav__brand {
  font-family: var(--display); font-weight: 700; font-size: 15px; letter-spacing: 0.14em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.nav__brand em {
  font-style: normal; font-family: var(--body-font); font-weight: 400;
  font-size: 12px; letter-spacing: 0.02em; color: var(--grey);
  display: block;
}
.nav__links { display: flex; gap: 26px; margin-left: auto; }
.nav__link {
  font-size: 14.5px; font-weight: 400; color: var(--grey); text-decoration: none;
  transition: color 0.2s ease;
}
.nav__link:hover { color: var(--blue); }
.nav__cta {
  font-family: var(--display); font-size: 13.5px; font-weight: 600;
  text-decoration: none; color: #ffffff;
  background: linear-gradient(135deg, var(--blue), #4a9bef);
  padding: 10px 20px; border-radius: 999px; white-space: nowrap;
  box-shadow: 0 8px 22px rgba(31, 122, 224, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(31, 122, 224, 0.45); }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__toggle span {
  display: block; width: 22px; height: 2px; background: var(--ink);
  margin: 5px 0; border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav__toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(700px 260px at 15% 18%, rgba(255, 255, 255, 0.9), transparent 65%),
    radial-gradient(900px 320px at 85% 30%, rgba(255, 255, 255, 0.75), transparent 60%),
    linear-gradient(180deg, var(--sky-high) 0%, var(--sky-mid) 55%, var(--air) 100%);
  padding: 158px 0 90px;
}
.hero__meta {
  font-family: var(--display); font-size: 12.5px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--blue);
}
.hero__title {
  margin-top: 16px;
  font-family: var(--display);
  font-size: clamp(50px, 8vw, 104px);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.0;
}
.hero__line { display: block; }
.hero__title .word { display: inline-block; white-space: nowrap; }
.hero__title .char {
  display: inline-block; opacity: 0; transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.hero__title .char.in { opacity: 1; transform: translateY(0); }
.hero__sub {
  max-width: 660px; margin: 22px 0 0;
  font-size: 20px; line-height: 1.6; color: var(--grey);
}

/* ---------- Altitude ticker ---------- */
.ticker { margin-top: 44px; overflow-x: auto; }
.ticker__scale {
  display: flex; align-items: flex-end; gap: 0;
  border-bottom: 2px solid rgba(31, 122, 224, 0.35);
  min-width: 640px;
}
.tick {
  flex: 1; position: relative;
  font-family: var(--display); font-size: 11px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey);
  padding: 0 0 10px 10px; white-space: nowrap;
}
.tick i {
  position: absolute; left: 0; bottom: 0;
  width: 2px; height: 18px; background: rgba(31, 122, 224, 0.45);
}
.tick--top { color: var(--blue); }
.tick--top i { height: 34px; background: var(--blue); }

.hero__grid {
  margin-top: 48px;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 30px;
  align-items: stretch;
}

/* ---------- Glass cards ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 22px;
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(14px);
}
.glass--photo { margin: 0; padding: 12px; display: flex; flex-direction: column; }
.glass--photo img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; flex: 1; }
.glass--photo figcaption {
  padding: 12px 6px 4px;
  font-size: 13.5px; font-weight: 400; color: var(--grey); text-align: center;
}
.hero__grid .glass--photo img { min-height: 360px; }

/* ---------- Fade / reveal ---------- */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.show { opacity: 1; transform: translateY(0); }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Enquiry panel ---------- */
.panel--hero { padding: 30px 28px; }
.panel__flag {
  font-family: var(--display); font-size: 12px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue);
}
.panel__head {
  font-family: var(--display); font-size: 22px; font-weight: 700;
  letter-spacing: -0.01em; margin: 6px 0 18px;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { margin-bottom: 12px; }
.field label {
  display: block; margin-bottom: 6px;
  font-size: 13px; font-weight: 500; color: var(--grey);
}
.field input, .field select {
  width: 100%; padding: 11px 13px;
  font-family: var(--body-font); font-size: 15.5px; font-weight: 400; color: var(--ink);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(140, 175, 215, 0.4); border-radius: 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(31, 122, 224, 0.15);
}
.field--hidden { display: none; }

.btn {
  display: inline-block; cursor: pointer;
  font-family: var(--display); font-size: 14.5px; font-weight: 600;
  text-decoration: none; text-align: center;
  color: #ffffff; background: linear-gradient(135deg, var(--blue), #4a9bef);
  border: none; border-radius: 999px;
  padding: 14px 30px;
  box-shadow: 0 10px 26px rgba(31, 122, 224, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 32px rgba(31, 122, 224, 0.45); }
.btn--full { width: 100%; }
.btn--line {
  background: rgba(255, 255, 255, 0.7); color: var(--blue);
  border: 1px solid rgba(31, 122, 224, 0.45); box-shadow: none;
}
.btn--line:hover { background: var(--blue); color: #ffffff; }

.contact__note { margin-top: 10px; font-size: 14px; font-weight: 400; color: var(--grey); min-height: 20px; }
.contact__note.ok { color: var(--blue); }
.contact__note.err { color: #c2402a; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section--sky {
  background:
    radial-gradient(800px 300px at 80% 0%, rgba(255, 255, 255, 0.9), transparent 60%),
    linear-gradient(180deg, var(--sky-mid), var(--air));
}
.section__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 20px;
  margin-bottom: 48px;
}
.section__head h2 {
  font-family: var(--display);
  font-size: clamp(30px, 4.2vw, 46px);
  font-weight: 700; letter-spacing: -0.02em;
}
.section__tag {
  font-family: var(--display); font-size: 12px; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--blue);
  white-space: nowrap;
}

/* ---------- Stats ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  margin-bottom: 48px;
}
.stat {
  background: var(--glass-bg); border: 1px solid var(--glass-edge);
  border-radius: 18px; box-shadow: var(--glass-shadow);
  padding: 26px 24px; text-align: center;
}
.stat__num {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(28px, 3.6vw, 44px); letter-spacing: -0.02em; color: var(--blue);
}
.stat p { margin-top: 6px; font-size: 14.5px; color: var(--grey); }

/* ---------- Tower cards ---------- */
.towergrid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px; }
.tower { padding: 34px 32px; }
.tower__flag {
  font-family: var(--display); font-size: 13px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue);
}
.tower__alt {
  font-family: var(--display); font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 700; letter-spacing: -0.02em; margin: 4px 0 18px;
}
.tower__rows div {
  display: grid; grid-template-columns: 130px 1fr; gap: 16px;
  padding: 11px 0; border-top: 1px solid rgba(140, 175, 215, 0.35);
}
.tower__rows span { font-size: 13.5px; font-weight: 500; color: var(--grey); padding-top: 2px; }
.tower__rows b { font-weight: 500; font-size: 16.5px; }

/* ---------- Table ---------- */
.table {
  background: var(--glass-bg); border: 1px solid var(--glass-edge);
  border-radius: 18px; box-shadow: var(--glass-shadow);
  padding: 10px 28px;
}
.table__row {
  display: grid; grid-template-columns: 220px 1fr; gap: 22px;
  padding: 14px 2px; border-bottom: 1px solid rgba(140, 175, 215, 0.3);
}
.table__row:last-child { border-bottom: none; }
.table__row span { font-size: 13.5px; font-weight: 500; color: var(--grey); padding-top: 3px; }
.table__row b { font-weight: 500; font-size: 17px; }
.section .btn--line.reveal { margin-top: 32px; }

/* ---------- Sky grid ---------- */
.skygrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.sky { padding: 30px 28px; }
.sky h3 {
  font-family: var(--display); font-size: 19px; font-weight: 700;
  letter-spacing: -0.01em; margin-bottom: 10px;
}
.sky p { font-size: 16px; color: var(--grey); }

/* ---------- Occupiers ---------- */
.occ { max-width: 920px; }
.occ__names { display: flex; flex-wrap: wrap; gap: 12px; }
.occ__names span {
  font-family: var(--display); font-size: 14px; font-weight: 600;
  color: var(--ink);
  background: var(--glass-bg); border: 1px solid var(--glass-edge);
  border-radius: 999px; box-shadow: 0 8px 22px rgba(110, 155, 205, 0.18);
  padding: 10px 22px;
}
.occ__note { margin-top: 26px; font-size: 19px; color: var(--grey); }

/* ---------- Shots ---------- */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.shots .glass--photo img { min-height: 220px; }

/* ---------- Contact ---------- */
.contactrow {
  display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center;
}
.contactrow__big {
  font-family: var(--display); font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 700; letter-spacing: -0.01em;
}
.contactrow__big a { color: var(--ink); text-decoration: none; }
.contactrow__big a:hover { color: var(--blue); }
.contactrow__sub { margin-top: 10px; font-size: 15.5px; color: var(--grey); }
.contactrow__cta { display: flex; flex-direction: column; gap: 12px; }

/* ---------- Footer ---------- */
.footer {
  background: linear-gradient(180deg, var(--air), var(--sky-mid));
  padding: 60px 0 48px; text-align: center;
}
.footer__brand {
  font-family: var(--display); font-weight: 700; font-size: 16px;
  letter-spacing: 0.26em;
}
.footer__meta { margin-top: 10px; font-size: 15px; color: var(--grey); }
.footer__legal { margin-top: 16px; font-size: 13.5px; color: #8ba0b8; }
.footer__legal a { color: var(--grey); }

/* ---------- Chat ---------- */
.chat { position: fixed; right: 26px; bottom: 26px; z-index: 120; }
.chat__fab {
  cursor: pointer;
  font-family: var(--display); font-size: 14px; font-weight: 600;
  color: #ffffff; background: linear-gradient(135deg, var(--blue), #4a9bef);
  border: none; border-radius: 999px;
  padding: 14px 24px;
  box-shadow: 0 12px 32px rgba(31, 122, 224, 0.4);
  transition: transform 0.2s ease;
}
.chat__fab:hover { transform: translateY(-1px); }
.chat__panel {
  position: absolute; right: 0; bottom: 66px;
  width: min(380px, calc(100vw - 52px));
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--glass-edge); border-radius: 22px;
  box-shadow: 0 24px 70px rgba(110, 155, 205, 0.35);
  backdrop-filter: blur(16px);
  padding: 22px;
  display: none; flex-direction: column; max-height: 560px;
}
.chat.open .chat__panel { display: flex; }
.chat__close {
  position: absolute; top: 8px; right: 14px;
  background: none; border: none; cursor: pointer;
  font-size: 24px; color: var(--grey);
}
.chat__flag {
  font-family: var(--display); font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue);
}
.chat__panel h3 { font-family: var(--display); font-size: 18px; font-weight: 700; margin: 4px 0 12px; }
.chat__msgs { flex: 1; overflow-y: auto; min-height: 120px; max-height: 330px; margin-bottom: 12px; }
.chat__msg { margin-bottom: 10px; font-size: 15px; font-weight: 400; line-height: 1.5; }
.chat__msg--user { text-align: right; color: var(--blue); }
.chat__msg--assistant { color: var(--ink); }
.chat__msg--typing { color: var(--grey); font-style: italic; }
.chat__form { display: flex; gap: 8px; }
.chat__form input {
  flex: 1; padding: 10px 12px;
  font-family: var(--body-font); font-size: 15px; font-weight: 400;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(140, 175, 215, 0.4); border-radius: 12px;
}
.chat__form input:focus { outline: none; border-color: var(--blue); }
.chat__send {
  cursor: pointer; color: #ffffff;
  background: linear-gradient(135deg, var(--blue), #4a9bef);
  border: none; border-radius: 12px; font-size: 17px; padding: 0 15px;
}

/* ---------- To top ---------- */
.to-top {
  position: fixed; left: 26px; bottom: 26px; z-index: 110;
  width: 46px; height: 46px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg); color: var(--blue);
  border: 1px solid var(--glass-edge); text-decoration: none; font-size: 18px;
  box-shadow: var(--glass-shadow); backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__grid .glass--photo img { min-height: 280px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .towergrid { grid-template-columns: 1fr; }
  .skygrid { grid-template-columns: 1fr; }
  .shots { grid-template-columns: 1fr; }
  .contactrow { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav__links {
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--glass-edge);
    flex-direction: column; align-items: center; gap: 0;
    padding: 10px 0; display: none;
  }
  .nav__links.open { display: flex; }
  .nav__link { padding: 12px 0; }
  .nav__cta { display: none; }
  .nav__toggle { display: block; margin-left: auto; }
  .nav__brand em { display: none; }
  .hero { padding: 126px 0 66px; }
  .section { padding: 68px 0; }
  .section__head { flex-direction: column; gap: 6px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .table__row { grid-template-columns: 1fr; gap: 3px; }
  .stats { gap: 14px; }
  .chat { right: 16px; bottom: 16px; }
  .to-top { left: 16px; bottom: 16px; }
}