/* =================================================================
   ZINBLE · Splash Gateway
   -----------------------------------------------------------------
   1.  Design tokens (CSS variables)
   2.  Reset & base
   3.  Background  (nebula + canvas + vignette)
   4.  Layout      (gateway / panels / brand)
   5.  Panels      (glassmorphism cards)
   6.  Hover FX    (cyber glow · gold glow · watermark · button)
   7.  Brand logo
   8.  Footer
   9.  Custom rupee cursor
   10. Responsive  (mobile-first overrides at the bottom)
   11. Accessibility (reduced motion / focus)
   ================================================================= */

/* ============ 1. DESIGN TOKENS ============ */
:root {
  /* Core palette */
  --bg:            #04050a;   /* deep space base            */
  --text:          #eef4ff;   /* primary text (cool white)  */
  --text-muted:    rgba(214, 226, 247, 0.66);

  /* Glass surface */
  --glass-bg:      linear-gradient(160deg, rgba(255,255,255,0.065), rgba(255,255,255,0.02));
  --glass-border:  rgba(255, 255, 255, 0.10);

  /* Easing + radii */
  --ease:   cubic-bezier(0.22, 0.7, 0.25, 1);
  --radius: 24px;
}

/* ============ 2. RESET & BASE ============ */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
a  { text-decoration: none; color: inherit; }

/* ============ 3. BACKGROUND ============ */
/* Fixed layer that sits behind everything. */
.space {
  position: fixed;
  inset: 0;
  z-index: 0;
  /* Base radial wash so the page never looks flat black,
     even before the canvas paints. */
  background:
    radial-gradient(120% 120% at 50% 12%, #0a1030 0%, #06070f 45%, var(--bg) 100%);
}

/* Soft, slowly drifting colour clouds — built entirely from
   layered radial-gradients (cheaper & smoother than blur filters). */
.nebula {
  position: absolute;
  inset: -25%;                 /* overscan so rotation never reveals edges */
  background:
    radial-gradient(40% 50% at 20% 25%, rgba(86, 72, 222, 0.30), transparent 70%),
    radial-gradient(38% 46% at 82% 30%, rgba(20, 150, 205, 0.24), transparent 72%),
    radial-gradient(46% 52% at 68% 82%, rgba(150, 46, 170, 0.20), transparent 72%),
    radial-gradient(52% 60% at 28% 80%, rgba(30, 90, 210, 0.18), transparent 74%);
  animation: nebula-rotate 150s linear infinite;
  will-change: transform;
}
.nebula::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(30% 40% at 50% 48%, rgba(40, 120, 230, 0.16), transparent 70%),
    radial-gradient(28% 34% at 76% 64%, rgba(0, 200, 180, 0.13), transparent 72%);
  animation: nebula-drift 95s ease-in-out infinite alternate;
  will-change: transform;
}

/* Twinkling starfield (drawn by main.js) */
#galaxy {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* Edge vignette for depth + centre focus */
.space::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(110% 110% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

@keyframes nebula-rotate {
  from { transform: rotate(0deg)   scale(1);    }
  50%  { transform: rotate(180deg) scale(1.08); }
  to   { transform: rotate(360deg) scale(1);    }
}
@keyframes nebula-drift {
  from { transform: translate3d(-3%, -2%, 0); }
  to   { transform: translate3d( 3%,  2%, 0); }
}

/* ============ 4. LAYOUT ============ */
/* Mobile-first: a simple vertical stack.
   The desktop side-by-side split is applied later in the media query. */
.gateway {
  position: relative;
  z-index: 2;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;       /* vertically centre the stack on mobile */
  gap: clamp(1rem, 3vw, 1.75rem);
  padding: clamp(1.5rem, 6vw, 2.5rem);
}

/* ============ 5. PANELS (glassmorphism) ============ */
.panel {
  position: relative;
  overflow: hidden;
  display: flex;
  flex: 0 0 auto;               /* size to content; desktop repositions these */
  padding: clamp(1.75rem, 3.2vw, 3rem);
  border-radius: var(--radius);

  /* The frosted glass */
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(16px) saturate(125%);
          backdrop-filter: blur(16px) saturate(125%);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);

  transition:
    transform   0.55s var(--ease),
    box-shadow  0.55s var(--ease),
    border-color 0.55s var(--ease);
}

/* Per-panel accent colours (used by buttons, glows, eyebrows, …) */
.panel--wealth { --accent: #ffd27d; --accent-rgb: 255, 210, 125; } /* warm gold  */
.panel--tech   { --accent: #46e7ff; --accent-rgb:  70, 231, 255; } /* electric cyan */

.panel__content {
  position: relative;
  z-index: 2;                 /* above the watermark */
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: clamp(0.65rem, 1.4vw, 1rem);
  max-width: 32rem;
  margin: auto;               /* vertically + horizontally centred on mobile */
}

.panel__eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.panel__title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: clamp(1.6rem, 1rem + 2.4vw, 2.6rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: #f4f8ff;
}

.panel__text {
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.08rem);
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 34ch;
}

/* Small capability chips */
.panel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.15rem 0 0.35rem;
}
.panel__tags li {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.32em 0.8em;
  border-radius: 100px;
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
}

/* Large faint glyph behind the content */
.panel__watermark {
  position: absolute;
  z-index: 1;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  line-height: 1;
  font-size: clamp(9rem, 26vw, 20rem);
  color: rgba(var(--accent-rgb), 0.05);
  user-select: none;
  pointer-events: none;
  transition: color 0.55s var(--ease);
}
.panel--wealth .panel__watermark { right: -1.5rem; bottom: -3rem; }
.panel--tech   .panel__watermark { left:  -1rem;   bottom: -3rem; }

/* ============ 6. HOVER FX ============ */

/* -- Shared lift + accent glow on hover/focus -- */
.panel:hover,
.panel:focus-visible {
  transform: translateY(-6px);
  border-color: rgba(var(--accent-rgb), 0.55);
  box-shadow:
    0 34px 80px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(var(--accent-rgb), 0.25),
    0 0 70px rgba(var(--accent-rgb), 0.22);
}
.panel:hover .panel__watermark {
  color: rgba(var(--accent-rgb), 0.10);
}

/* -- RIGHT (Tech): digital / cyber glow -- */
/* A faint tech grid that fades in, masked to a soft circle. */
.panel--tech::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  background-image:
    linear-gradient(rgba(70, 231, 255, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(70, 231, 255, 0.10) 1px, transparent 1px);
  background-size: 34px 34px;
  -webkit-mask-image: radial-gradient(circle at 70% 60%, #000 0%, transparent 72%);
          mask-image: radial-gradient(circle at 70% 60%, #000 0%, transparent 72%);
  transition: opacity 0.5s var(--ease);
}
.panel--tech:hover::before { opacity: 1; }

/* A diagonal light "scan" that sweeps across once on hover. */
.panel--tech::after {
  content: "";
  position: absolute;
  top: 0;
  left: -75%;
  width: 60%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transform: skewX(-18deg);
  background: linear-gradient(100deg, transparent, rgba(120, 240, 255, 0.14), transparent);
}
.panel--tech:hover::after {
  opacity: 1;
  animation: cyber-sweep 1.3s var(--ease) forwards;
}
@keyframes cyber-sweep {
  from { left: -75%; }
  to   { left: 130%; }
}

/* -- LEFT (Wealth): hide the native cursor so the custom ₹ shows.
      Gated by .fine-pointer (added via JS) so we never hide the
      cursor on touch / coarse-pointer devices. -- */
body.fine-pointer .panel--wealth,
body.fine-pointer .panel--wealth *,
body.fine-pointer .panel--tech,
body.fine-pointer .panel--tech * { cursor: none; }

/* ============ 6b. CALL-TO-ACTION BUTTON ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  margin-top: 0.4rem;
  padding: 0.85em 1.55em;
  border-radius: 100px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  color: #fff;
  border: 1px solid rgba(var(--accent-rgb), 0.45);
  background: rgba(var(--accent-rgb), 0.07);
  transition: background 0.4s var(--ease), color 0.4s var(--ease),
              box-shadow 0.4s var(--ease), transform 0.4s var(--ease);
}
.btn__arrow { transition: transform 0.4s var(--ease); }

/* Light up when the parent card is hovered/focused */
.panel:hover .btn,
.panel:focus-visible .btn {
  color: #04050a;
  background: linear-gradient(120deg, rgba(var(--accent-rgb), 0.95), rgba(var(--accent-rgb), 0.6));
  box-shadow: 0 0 28px rgba(var(--accent-rgb), 0.5);
}
.panel:hover .btn__arrow,
.panel:focus-visible .btn__arrow { transform: translateX(5px); }

/* ============ 7. BRAND LOGO ============ */
.brand {
  position: relative;
  text-align: center;
  pointer-events: none;          /* clicks pass through to panels */
  user-select: none;
}
/* Dark halo keeps the logo legible over either panel on desktop */
.brand::before {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 150%; height: 280%;
  z-index: -1;
  background: radial-gradient(closest-side, rgba(4, 5, 12, 0.7), transparent 78%);
}

.brand__name {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: clamp(2.6rem, 1rem + 7vw, 6.25rem);
  letter-spacing: 0.18em;
  text-indent: 0.18em;           /* optical-centre the tracked text */
  /* White → soft-blue metallic sheen */
  background: linear-gradient(180deg, #ffffff 0%, #cfe2ff 55%, #9cc2ff 100%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  /* Glow (filter works on clipped text where text-shadow can't) */
  filter: drop-shadow(0 0 16px rgba(120, 190, 255, 0.5));
  animation: brand-pulse 5s ease-in-out infinite;
}

/* Per-letter hover: sweeping across ZINBLE lights each letter in neon
   green (#39FD13). Green pops against the deep-space blues and pairs
   with the cyan tech side, without red's "warning/error" connotation.
   `-webkit-text-fill-color` is required to override the gradient clip. */
.brand__name span {
  display: inline-block;
  pointer-events: auto;          /* re-enable: the .brand wrapper is none */
  cursor: pointer;
  transition: color 0.18s var(--ease),
              -webkit-text-fill-color 0.18s var(--ease),
              text-shadow 0.18s var(--ease),
              transform 0.18s var(--ease);
}
.brand__name span:hover {
  color: #39FD13;
  -webkit-text-fill-color: #39FD13;
  transform: translateY(-3px);
  text-shadow:
    0 0 10px rgba(57, 253, 19, 0.95),
    0 0 24px rgba(57, 253, 19, 0.6),
    0 0 48px rgba(57, 253, 19, 0.35);
}

.brand__tagline {
  margin-top: 1rem;
  font-size: clamp(0.6rem, 0.5rem + 0.6vw, 0.8rem);
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  text-transform: uppercase;
  color: rgba(190, 208, 236, 0.78);
}

@keyframes brand-pulse {
  0%, 100% { filter: drop-shadow(0 0 14px rgba(120, 190, 255, 0.45)); }
  50%      { filter: drop-shadow(0 0 30px rgba(120, 190, 255, 0.75)); }
}

/* ============ 8. FOOTER ============ */
.site-footer {
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(176, 190, 214, 0.5);
}

/* ============ 9. CUSTOM RUPEE CURSOR ============ */
/* Shared base for BOTH custom cursors */
.custom-cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  /* `scale` is separate from `transform` (set by JS) so they don't fight */
  scale: 1;
  transition: opacity 0.25s var(--ease), scale 0.2s var(--ease);
  will-change: transform;
}
.custom-cursor.is-active  { opacity: 1; }
.custom-cursor.is-pointer { scale: 1.35; }   /* grows over the CTA */

/* Pulsing halo ring (colour comes from per-cursor variables) */
.custom-cursor::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 42px; height: 42px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid var(--ring-border);
  box-shadow: 0 0 18px var(--ring-glow);
  animation: cursor-ring 1.8s ease-in-out infinite;
}

/* LEFT — glowing ₹ (gold) */
.rupee-cursor { --ring-border: rgba(255, 200, 110, 0.5); --ring-glow: rgba(255, 180, 70, 0.4); }
.rupee-cursor span {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  color: #ffd98a;
  text-shadow:
    0 0 10px rgba(255, 200, 100, 0.9),
    0 0 22px rgba(255, 170, 60, 0.7),
    0 0 40px rgba(255, 150, 40, 0.4);
}

/* RIGHT — glowing computer-mouse (cyan) */
.tech-cursor {
  --ring-border: rgba(125, 240, 255, 0.5);
  --ring-glow:   rgba(70, 231, 255, 0.4);
  color: #bdf4ff;                 /* drives the SVG's currentColor */
}
.tech-cursor svg {
  display: block;
  width: 26px; height: auto;
  filter:
    drop-shadow(0 0 4px rgba(120, 240, 255, 0.95))
    drop-shadow(0 0 12px rgba(70, 231, 255, 0.65));
}
@keyframes cursor-ring {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(0.9); }
  50%      { opacity: 1;   transform: translate(-50%, -50%) scale(1.15); }
}

/* ============ 10. RESPONSIVE — DESKTOP SPLIT ============ */
/* From 900px up we switch to the immersive two-way split: panels
   pinned left & right, the brand floating dead-centre over the seam. */
@media (min-width: 900px) {
  .gateway {
    height: 100dvh;
    display: block;            /* panels become absolutely positioned */
    padding: 0;
  }

  .panel {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: clamp(19rem, 30vw, 32rem);
    min-height: 0;
    max-height: min(82vh, 640px);
    padding: clamp(2rem, 3vw, 3.25rem);
  }
  .panel--wealth { left:  clamp(2rem, 5vw, 6rem); }
  .panel--tech   { right: clamp(2rem, 5vw, 6rem); }

  /* Re-assert the lift transform (overrides the centring transform) */
  .panel--wealth:hover, .panel--wealth:focus-visible,
  .panel--tech:hover,   .panel--tech:focus-visible {
    transform: translateY(-50%) translateY(-6px);
  }

  /* Mirror the right panel so both flank the logo symmetrically */
  .panel--tech .panel__content { align-items: flex-end; text-align: right; }
  .panel--tech .panel__text    { margin-left: auto; }
  .panel--tech .panel__tags    { justify-content: flex-end; }
  .panel__content              { margin: 0; }

  .brand {
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
  }

  .site-footer {
    position: absolute;
    bottom: clamp(0.9rem, 2.4vh, 1.6rem);
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
  }
}

/* Extra breathing room on very large / ultra-wide screens */
@media (min-width: 1800px) {
  .panel { width: clamp(30rem, 26vw, 40rem); }
}

/* ============ 11. ACCESSIBILITY ============ */
/* Clear keyboard focus ring */
.panel:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.9);
  outline-offset: 4px;
}

/* Honour reduced-motion: kill all ambient animation */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Graceful fallback if backdrop-filter is unsupported:
   make the glass a touch more opaque so text stays readable. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .panel { background: rgba(12, 16, 28, 0.82); }
}