/* ==========================================================================
   BHAO.IN — Architectural Grid Landing Page
   A minimalist, Swiss-grid design for Studio & Friend
   ========================================================================== */

:root {
  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-indic: 'Noto Sans Devanagari', 'Noto Sans Bengali', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-devanagari: var(--font-indic);

  /* Color Palette */
  --bg-canvas: #ffffff;
  --color-black: #000000;
  --color-white: #ffffff;
  --color-ink: #111111;
  --color-ink-subtle: #333333;
  --color-gray-muted: #71717a;
  --grid-line: #e5e5e5;
  --grid-line-dark: rgba(0, 0, 0, 0.08);

  /* Architectural Grid Columns (Desktop default) */
  --col-left: clamp(140px, 35vw, 560px);
  --col-1: 130px;
  --col-2: 60px;
  --col-3: 130px;
  --col-touch: clamp(240px, 24vw, 360px);

  /* Component Heights */
  --header-height: 70px;
  --brand-row-height: clamp(170px, 23vh, 230px);
  --footer-height: 38px;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-canvas);
  color: var(--color-ink);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles for keyboard accessibility */
:focus-visible {
  outline: 2px solid var(--color-black);
  outline-offset: 3px;
}

/* ==========================================================================
   Viewport Canvas & Architectural Grid Overlay
   ========================================================================== */

.viewport-canvas {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
  overflow: hidden;
}

/* Vertical Grid Lines: Continuous architectural drafting lines */
.grid-lines-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(100% - var(--footer-height));
  pointer-events: none;
  z-index: 1;
}

.vline {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--grid-line);
}

.vline.line-1 {
  left: var(--col-left);
}

.vline.line-2 {
  left: calc(var(--col-left) + var(--col-1));
}

.vline.line-3 {
  left: calc(var(--col-left) + var(--col-1) + var(--col-2));
}

.vline.line-4 {
  left: calc(var(--col-left) + var(--col-1) + var(--col-2) + var(--col-3));
}

.vline.line-5 {
  left: calc(100% - var(--col-touch));
}

/* ==========================================================================
   Header Row & "Get in touch" Cell
   ========================================================================== */

.header-row {
  position: relative;
  z-index: 2;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--grid-line);
}

.header-left-space {
  flex: 1;
}

.touch-cell-wrapper {
  width: var(--col-touch);
  height: 100%;
  display: flex;
}

.touch-btn {
  width: 100%;
  height: 100%;
  background-color: var(--color-black);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background-color 0.15s ease, opacity 0.15s ease, transform 0.15s ease;
  user-select: none;
}

.touch-btn:hover {
  background-color: #1a1a1a;
}

.touch-btn:active {
  background-color: #2b2b2b;
}

/* ==========================================================================
   Main Content: Brand Block & Definition Block
   ========================================================================== */

.main-content {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Row 2: Brand Wordmark (Above middle horizontal line) */
.brand-row {
  position: relative;
  height: var(--brand-row-height);
  border-bottom: 1px solid var(--grid-line);
  display: flex;
  align-items: flex-end;
}

.brand-container {
  padding-left: var(--col-left);
  padding-bottom: 14px;
}

.brand-title {
  font-family: var(--font-sans);
  font-size: clamp(34px, 3.8vw, 44px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1;
  color: var(--color-black);
}

.brand-subtitle {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--color-black);
  margin-top: 6px;
}

/* Row 3: Etymology & Definition (Below middle horizontal line) */
.definition-row {
  position: relative;
  flex: 1;
  padding-top: 24px;
  padding-bottom: 32px;
}

.definition-container {
  padding-left: var(--col-left);
  max-width: calc(var(--col-left) + 430px);
}

.phonetic-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.phonetic-text {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--color-gray-muted);
  cursor: pointer;
  transition: color 0.15s ease;
}

.phonetic-text:hover {
  color: var(--color-black);
}

.pronounce-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: 4px;
  color: var(--color-gray-muted);
  transition: color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
}

.pronounce-icon-btn:hover {
  color: var(--color-black);
  background-color: rgba(0, 0, 0, 0.05);
}

.pronounce-icon-btn.playing {
  color: var(--color-black);
  transform: scale(1.15);
}

.definition-text {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.62;
  color: var(--color-ink-subtle);
  max-width: 440px;
}

.devanagari-text,
.script-indic {
  font-family: var(--font-indic);
  font-weight: 500;
}

/* ==========================================================================
   Footer Marquee Bar
   ========================================================================== */

.marquee-footer {
  position: relative;
  z-index: 2;
  height: var(--footer-height);
  background-color: var(--color-black);
  color: var(--color-white);
  overflow: hidden;
  display: flex;
  align-items: center;
  user-select: none;
}

.marquee-track {
  display: flex;
  width: max-content;
  will-change: transform;
  animation: marquee-scroll 24s linear infinite;
}

.marquee-footer:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-group {
  display: flex;
  align-items: center;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.marquee-star {
  display: inline-block;
  margin: 0 16px;
  opacity: 0.7;
}

@keyframes marquee-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ==========================================================================
   Contact Dialog & Modal Card
   ========================================================================== */

.contact-dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: backdrop-fade-in 0.2s ease forwards;
}

.contact-dialog-backdrop[hidden] {
  display: none;
}

.contact-dialog-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background-color: var(--color-white);
  border: 1px solid var(--color-black);
  padding: 28px 28px 24px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
  animation: card-pop-in 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes backdrop-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes card-pop-in {
  from {
    opacity: 0;
    transform: scale(0.97) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.dialog-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-muted);
  margin-bottom: 4px;
}

.dialog-title {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-black);
}

.dialog-close-btn {
  font-size: 26px;
  line-height: 1;
  color: var(--color-gray-muted);
  padding: 2px 6px;
  border-radius: 2px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.dialog-close-btn:hover {
  color: var(--color-black);
  background-color: rgba(0, 0, 0, 0.05);
}

.dialog-body {
  margin-bottom: 24px;
}

.dialog-sub {
  font-size: 13.5px;
  color: var(--color-ink-subtle);
  line-height: 1.5;
  margin-bottom: 14px;
}

.email-display-card {
  background-color: #f7f7f7;
  border: 1px solid var(--grid-line);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.email-address {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-black);
  letter-spacing: -0.01em;
}

.email-address:hover {
  text-decoration: underline;
}

.dialog-footer {
  display: flex;
  gap: 12px;
}

.action-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  transition: all 0.15s ease;
}

.copy-btn {
  background-color: var(--color-white);
  color: var(--color-black);
  border: 1px solid var(--color-black);
}

.copy-btn:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

.copy-btn.copied {
  background-color: var(--color-black);
  color: var(--color-white);
}

.mailto-btn {
  background-color: var(--color-black);
  color: var(--color-white);
  border: 1px solid var(--color-black);
}

.mailto-btn:hover {
  background-color: #222222;
  border-color: #222222;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 900px) {
  :root {
    --col-left: clamp(28px, 10vw, 80px);
    --col-touch: clamp(160px, 28vw, 220px);
    --header-height: 64px;
  }

  .vline.line-4 {
    display: none;
  }
}

@media (max-width: 600px) {
  :root {
    --col-left: 20px;
    --col-touch: 130px;
    --header-height: 58px;
    --footer-height: 34px;
    --brand-row-height: 160px;
  }

  .vline.line-2,
  .vline.line-3,
  .vline.line-4 {
    display: none;
  }

  .touch-btn {
    font-size: 12px;
  }

  .brand-title {
    font-size: 30px;
  }

  .brand-subtitle {
    font-size: 10px;
    letter-spacing: 0.15em;
  }

  .definition-text {
    font-size: 12px;
    max-width: calc(100vw - 40px);
  }

  .dialog-footer {
    flex-direction: column;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .marquee-track {
    animation: none;
    transform: none;
  }
}