/* Aarambh Residency — site styles (mobile first, desktop from 900px) */

:root {
  --euc: #1E3B34;
  --euc-2: #274A41;
  --euc-line: #3E6258;
  --brass: #B8904A;
  --brass-light: #E3C27E;
  --brass-hover: #CFA55B;
  --concrete: #E6E7E3;
  --white: #FFFFFF;
  --ink: #22262A;
  --ink-2: #555C62;
  --line: #CDD0CA;
  --on-euc: #EEF2EE;
  --on-euc-2: #B9C9C2;

  --font-display: 'Jost', system-ui, sans-serif;
  --font-body: 'Source Serif 4', Georgia, serif;

  --gutter: 20px;
  --max: 1200px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  background: var(--concrete);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--euc); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; margin: 0; line-height: 1.1; }
h2 { font-size: clamp(32px, 5vw, 48px); letter-spacing: -0.01em; }
h3 { font-size: 20px; font-weight: 600; }
p { margin: 0; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  padding: 10px 16px; background: var(--ink); color: #fff;
}
.skip-link:focus { top: 8px; color: #fff; }

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

.section-lead { margin-top: 12px; color: var(--ink-2); max-width: 34em; }

/* ---------- Buttons: square corners, like drawing sheets ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 500; letter-spacing: .02em; text-decoration: none; line-height: 1;
  border: 1.5px solid transparent; border-radius: 2px; cursor: pointer;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn-sm { height: 42px; padding: 0 16px; font-size: 15px; }
.btn-lg { height: 54px; padding: 0 26px; font-size: 17px; }
.btn-block { width: 100%; }
.btn-brass { background: var(--brass); color: var(--euc); }
.btn-brass:hover { background: var(--brass-hover); color: var(--euc); }
.btn-outline { border-color: var(--on-euc-2); color: var(--on-euc); }
.btn-outline:hover { background: var(--on-euc); color: var(--euc); }
.btn-euc { background: var(--euc); color: var(--on-euc); }
.btn-euc:hover { background: var(--euc-2); color: var(--on-euc); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--euc); border-bottom: 1px solid var(--euc-line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: flex; align-items: baseline; gap: 8px; text-decoration: none; color: var(--on-euc); font-family: var(--font-display); }
.brand:hover { color: var(--on-euc); }
.brand-name { font-size: 22px; font-weight: 600; letter-spacing: .14em; }
.brand-sub { font-size: 15px; color: var(--brass-light); letter-spacing: .06em; }
.site-nav { display: none; }

@media (max-width: 400px) { .brand-sub { display: none; } }
@media (min-width: 960px) {
  .site-nav { display: flex; gap: 26px; margin-left: auto; margin-right: 8px; }
  .site-nav a { color: var(--on-euc-2); text-decoration: none; font-family: var(--font-display); font-size: 16px; }
  .site-nav a:hover { color: var(--on-euc); }
}

/* ---------- Hero ---------- */
.hero {
  background-color: var(--euc);
  /* faint drafting grid */
  background-image:
    linear-gradient(rgba(227, 194, 126, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(227, 194, 126, .06) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--on-euc);
  padding: 48px 0 0;
  overflow: hidden;
}
.hero-grid { display: grid; gap: 24px; }
.hero h1 { font-size: clamp(36px, 6.6vw, 62px); font-weight: 400; letter-spacing: -0.015em; max-width: 16ch; }
.lead { margin-top: 20px; font-size: 19px; color: var(--on-euc-2); max-width: 32em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.hero-facts { margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, auto); justify-content: start; border-top: 1px solid var(--euc-line); }
.hero-facts div { padding: 16px 18px 0 0; }
.hero-facts div + div { padding-left: 18px; border-left: 1px solid var(--euc-line); }
.hero-facts dt { font-family: var(--font-display); font-size: 14px; color: var(--on-euc-2); }
.hero-facts dd { margin: 2px 0 0; font-family: var(--font-display); font-size: clamp(18px, 4.6vw, 26px); color: var(--brass-light); white-space: nowrap; }

.hero-art { align-self: end; }
.tower { width: 100%; max-width: 520px; display: block; margin: 0 auto -4px; overflow: visible; }
.tower .t-line line, .tower .t-line rect, .tower .t-line circle { stroke: var(--brass); stroke-width: 1.2; }
.tower .t-line .t-thick { stroke-width: 2.2; }
.tower .t-fine { stroke: var(--brass); stroke-width: .7; opacity: .7; }
.tower .t-core { fill: rgba(227, 194, 126, .1); stroke: var(--brass); stroke-width: 1; }
.tower .t-fill { fill: var(--brass); stroke: none; }
.tower .w { fill: var(--euc-2); stroke: var(--brass); stroke-width: 1; }
.tower .w.on { fill: var(--brass-light); }
.tower .t-label { fill: var(--brass-light); font: 500 12px var(--font-display); letter-spacing: .1em; }

/* One moment on load: the flats light up floor by floor, like the building at dusk */
@media (prefers-reduced-motion: no-preference) {
  .tower .w.on { animation: light 0.5s ease-out both; animation-delay: var(--d); }
  @keyframes light { from { fill: var(--euc-2); } to { fill: var(--brass-light); } }
}

@media (min-width: 900px) {
  .hero { padding-top: 72px; }
  .hero-grid { grid-template-columns: 1.1fr 1fr; gap: 56px; }
  .hero-copy { padding-bottom: 88px; }
}

/* ---------- Floor plans ---------- */
.plans { padding: 64px 0; background: var(--white); }
.head-row { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 20px; }
.tabs { display: inline-flex; border: 1.5px solid var(--euc); border-radius: 2px; }
.tabs button {
  height: 46px; padding: 0 22px; border: 0; cursor: pointer;
  font: 500 16px var(--font-display); letter-spacing: .04em; color: var(--euc); background: transparent;
}
.tabs button[aria-pressed="true"] { background: var(--euc); color: var(--on-euc); }

.plans-grid { display: grid; gap: 36px; margin-top: 36px; align-items: center; }
.plan-figure { margin: 0; }
.plan { width: 100%; height: auto; display: block; background: #F7F7F4; border: 1px solid var(--line); }
.plan .room { fill: #FFFFFF; stroke: var(--ink); stroke-width: 3; }
.plan .room.wet { fill: #EAF0F1; }
.plan .room.out { fill: #EEF1EA; stroke-dasharray: 6 4; stroke-width: 2; }
.plan .r-name { font: 600 11px var(--font-display); fill: var(--ink); text-anchor: middle; letter-spacing: .03em; }
.plan .r-dim { font: 400 9.5px var(--font-display); fill: var(--ink-2); text-anchor: middle; }
.plan-figure figcaption { margin-top: 10px; font-size: 14px; color: var(--ink-2); }

.plan-facts { margin: 0; display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid var(--euc); }
.plan-facts div { padding: 16px 0; border-bottom: 1px solid var(--line); }
.plan-facts div:nth-child(odd) { padding-right: 16px; }
.plan-facts dt { font-family: var(--font-display); font-size: 14px; color: var(--ink-2); }
.plan-facts dd { margin: 2px 0 0; font-family: var(--font-display); font-size: 26px; font-weight: 500; }
.plan-note { margin: 24px 0 28px; color: var(--ink-2); }

@media (min-width: 900px) {
  .plans { padding: 104px 0; }
  .plans-grid { grid-template-columns: 1.35fr 1fr; gap: 64px; }
}

/* ---------- EMI ---------- */
.emi { padding: 64px 0; }
.emi-grid { display: grid; gap: 32px; }
.emi-form { display: grid; gap: 26px; background: var(--white); padding: 24px; border: 1px solid var(--line); }
.slider { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; align-items: baseline; }
.slider label { font-family: var(--font-display); font-weight: 500; }
.slider output { font-family: var(--font-display); font-size: 20px; font-weight: 600; color: var(--euc); }
.slider input { grid-column: 1 / -1; width: 100%; accent-color: var(--euc); height: 28px; margin: 0; }

.emi-result { background: var(--euc); color: var(--on-euc); padding: 24px; margin: 4px -24px -24px; }
.emi-label { font-family: var(--font-display); color: var(--on-euc-2); font-size: 15px; }
.emi-value { font-family: var(--font-display); font-size: clamp(40px, 9vw, 56px); font-weight: 500; color: var(--brass-light); line-height: 1.1; }
.emi-bar { height: 10px; margin: 18px 0 14px; background: #7E6A45; display: flex; }
.emi-bar span { background: var(--brass-light); transition: width .25s; }
.emi-split { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.emi-split dt { font-family: var(--font-display); font-size: 14px; color: var(--on-euc-2); display: flex; align-items: center; gap: 8px; }
.emi-split dd { margin: 2px 0 0; font-family: var(--font-display); font-size: 20px; }
.dot { width: 10px; height: 10px; display: inline-block; }
.dot-p { background: var(--brass-light); }
.dot-i { background: #7E6A45; }

@media (min-width: 900px) {
  .emi { padding: 104px 0; }
  .emi-grid { grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: start; }
  .emi-form { padding: 36px; }
  .emi-result { margin: 8px -36px -36px; padding: 32px 36px; }
}

/* ---------- Amenities ---------- */
.amenities { padding: 64px 0; background: var(--white); }
.amen-grid { display: grid; gap: 32px; margin-top: 36px; }
.amen-grid h3 { padding-bottom: 12px; border-bottom: 2px solid var(--brass); }
.amen-grid ul { list-style: none; margin: 0; padding: 0; }
.amen-grid li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 17px; }

@media (min-width: 900px) {
  .amenities { padding: 104px 0; }
  .amen-grid { grid-template-columns: repeat(3, 1fr); gap: 48px; }
}

/* ---------- Progress ---------- */
.progress { padding: 64px 0; }
.timeline { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 0; counter-reset: step; }
.timeline li { position: relative; padding: 0 0 28px 40px; display: grid; gap: 2px; }
.timeline li::before {
  content: ""; position: absolute; left: 6px; top: 6px; width: 14px; height: 14px;
  border: 2px solid var(--ink-2); background: var(--concrete); border-radius: 50%; z-index: 1;
}
.timeline li::after { content: ""; position: absolute; left: 13px; top: 20px; bottom: 0; width: 2px; background: var(--line); }
.timeline li:last-child::after { display: none; }
.timeline li.done::before { background: var(--euc); border-color: var(--euc); }
.timeline li.done::after { background: var(--euc); }
.timeline li.now::before { background: var(--brass); border-color: var(--brass); box-shadow: 0 0 0 5px rgba(184, 144, 74, .25); }
.tl-date { font-family: var(--font-display); font-size: 14px; color: var(--ink-2); }
.tl-step { font-family: var(--font-display); font-size: 19px; font-weight: 500; }
.timeline li.now .tl-step::after { content: "Now"; margin-left: 10px; padding: 2px 8px; font-size: 13px; background: var(--brass); color: var(--euc); vertical-align: 2px; }

@media (min-width: 900px) {
  .progress { padding: 104px 0; }
  .timeline { grid-template-columns: repeat(5, 1fr); }
  .timeline li { padding: 36px 20px 0 0; }
  .timeline li::before { left: 0; top: 0; }
  .timeline li::after { left: 14px; right: 0; top: 7px; bottom: auto; width: auto; height: 2px; }
}

/* ---------- Location ---------- */
.location { padding: 64px 0; background: var(--white); }
.location-grid { display: grid; gap: 32px; }
.distances { list-style: none; margin: 28px 0 0; padding: 0; border-top: 2px solid var(--euc); }
.distances li { display: flex; justify-content: space-between; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.distances b { font-family: var(--font-display); font-weight: 600; white-space: nowrap; }
.map { width: 100%; height: 360px; border: 1px solid var(--line); background: var(--concrete); }

@media (min-width: 900px) {
  .location { padding: 104px 0; }
  .location-grid { grid-template-columns: 1fr 1.3fr; gap: 72px; align-items: center; }
  .map { height: 460px; }
}

/* ---------- Visit ---------- */
.visit { background: var(--euc); color: var(--on-euc); padding: 64px 0; }
.visit-grid { display: grid; gap: 32px; }
.visit-copy p { margin-top: 14px; color: var(--on-euc-2); max-width: 30em; }
.brochure { display: inline-block; margin-top: 24px; color: var(--brass-light); font-family: var(--font-display); font-weight: 500; font-size: 18px; text-underline-offset: 5px; }
.brochure:hover { color: var(--white); }

.visit-form { display: grid; gap: 18px; background: var(--euc-2); padding: 24px; border: 1px solid var(--euc-line); }
.field-row { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-family: var(--font-display); font-size: 15px; color: var(--on-euc-2); }
.field input, .field select {
  width: 100%; height: 52px; padding: 0 14px;
  font: 400 17px var(--font-display); color: var(--ink);
  background: var(--white); border: 2px solid transparent; border-radius: 2px;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--brass); }
.field input[aria-invalid="true"] { border-color: #E48A7B; }
.form-error { color: #F4B3A7; font-family: var(--font-display); }

@media (min-width: 600px) { .field-row { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) {
  .visit { padding: 104px 0; }
  .visit-grid { grid-template-columns: 1fr 1.1fr; gap: 80px; align-items: start; }
  .visit-form { padding: 36px; }
}

/* ---------- Footer ---------- */
.site-footer { background: #16302A; color: var(--on-euc-2); padding: 32px 0 40px; font-size: 15px; }
.footer-inner { display: grid; gap: 6px; }
.footer-brand { font-family: var(--font-display); font-size: 18px; color: var(--on-euc); letter-spacing: .06em; }
.credits { font-size: 13px; opacity: .8; }