/* ================================================================
   BUSCA-RITMES · Landing Page — Premium Dark
   ================================================================ */

:root {
  --bg:      #05050d;
  --glass:   rgba(255,255,255,0.038);
  --border:  rgba(255,255,255,0.08);
  --txt:     #eeeef8;
  --dim:     #50507a;
  --acc:     #6650f0;
  --acc2:    #3d8ef0;
  --n1:#d4a017; --n2:#3d8ef0; --n3:#28c87a; --n4:#c0334d;
}

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

html,body { height:100%; }

body {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--txt);
  overflow: hidden;
  position: relative;
}

/* ── Background layers ───────────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 18% 18%, rgba(102,80,240,.13) 0%, transparent 55%),
    radial-gradient(ellipse 55% 45% at 85% 82%, rgba(61,142,240,.10) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(40,200,122,.04) 0%, transparent 60%);
  pointer-events: none;
}

/* Grid mesh */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
}

/* ── Floating notes ──────────────────────────────────────── */
.bg-notes { position:fixed; inset:0; pointer-events:none; z-index:0; }

.bn {
  position: absolute;
  opacity: .11;
  animation: floatNote 8s ease-in-out infinite;
}
.bn.c1 { color: var(--n1); }
.bn.c2 { color: var(--n2); }
.bn.c3 { color: var(--n3); }
.bn.c4 { color: var(--n4); }

@keyframes floatNote {
  0%,100% { transform: translateY(0) rotate(0deg); }
  30%      { transform: translateY(-22px) rotate(5deg); }
  65%      { transform: translateY(-10px) rotate(-3deg); }
}

/* ── Main card ───────────────────────────────────────────── */
.landing-card {
  position: relative; z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 48px 52px 40px;
  max-width: 520px;
  width: 94vw;
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  text-align: center;
  box-shadow:
    0 0 0 1px rgba(255,255,255,.04) inset,
    0 32px 100px rgba(0,0,0,.55),
    0 0 80px rgba(102,80,240,.06);
  animation: cardIn .65s cubic-bezier(.16,1,.3,1);
}

@keyframes cardIn {
  from { opacity:0; transform:translateY(28px) scale(.96); }
  to   { opacity:1; transform:translateY(0) scale(1); }
}

/* Brand badge */
.brand-badge {
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--dim);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 16px;
  animation: cardIn .65s .1s cubic-bezier(.16,1,.3,1) backwards;
}

/* Title */
.landing-title {
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, #ffffff 0%, #c0c8ff 45%, #8868ff 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation:
    cardIn .65s .15s cubic-bezier(.16,1,.3,1) backwards,
    gradShift 6s ease infinite;
}

@keyframes gradShift {
  0%,100% { background-position:0% 50%; }
  50%      { background-position:100% 50%; }
}

.landing-sub {
  font-size: .85rem;
  color: var(--dim);
  letter-spacing: .04em;
  margin-top: -10px;
  animation: cardIn .65s .2s cubic-bezier(.16,1,.3,1) backwards;
}

/* ── Preview board ───────────────────────────────────────── */
.preview-board {
  display: grid;
  grid-template-columns: repeat(7, 38px);
  grid-template-rows: repeat(5, 38px);
  gap: 3px;
  padding: 8px;
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 14px;
  box-shadow:
    0 0 0 1px rgba(255,255,255,.03) inset,
    0 8px 40px rgba(0,0,0,.4);
  animation: cardIn .65s .25s cubic-bezier(.16,1,.3,1) backwards;
}

.pv-cell {
  width: 38px; height: 38px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.055);
  animation: cellReveal .5s cubic-bezier(.16,1,.3,1) backwards;
}
@keyframes cellReveal {
  from { opacity:0; transform:scale(.6); }
  to   { opacity:1; transform:scale(1); }
}

.pv-hidden { background: #141422; }
.pv-empty  { background: #07070e; border-color: rgba(255,255,255,.025); }
.pv-note   { background: #0b0b16; }
.pv-flag   { background: rgba(245,197,66,.09); border-color:rgba(245,197,66,.2); font-size:.9rem; }

/* ── Action buttons ──────────────────────────────────────── */
.landing-actions {
  display: flex;
  gap: 12px;
  width: 100%;
  animation: cardIn .65s .3s cubic-bezier(.16,1,.3,1) backwards;
}

.lbtn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 0;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}

.lbtn-primary {
  background: linear-gradient(135deg, var(--acc) 0%, var(--acc2) 100%);
  color: #fff;
  box-shadow: 0 4px 24px rgba(102,80,240,.38);
}
.lbtn-primary:hover  { transform:translateY(-3px) scale(1.03); box-shadow: 0 12px 40px rgba(102,80,240,.55); }
.lbtn-primary:active { transform:scale(.96); }

.lbtn-secondary {
  background: rgba(255,255,255,.055);
  color: var(--txt);
  border: 1px solid var(--border);
}
.lbtn-secondary:hover  { background: rgba(255,255,255,.09); border-color:rgba(255,255,255,.18); transform:translateY(-3px) scale(1.03); }
.lbtn-secondary:active { transform:scale(.96); }

/* ── Pills ───────────────────────────────────────────────── */
.landing-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  animation: cardIn .65s .35s cubic-bezier(.16,1,.3,1) backwards;
}

.landing-pills span {
  font-size: .66rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--dim);
  background: rgba(255,255,255,.036);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 14px;
}

.landing-home {
  display: inline-block;
  margin-top: 20px;
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--dim);
  text-decoration: none;
  opacity: .75;
  transition: opacity .16s ease, color .16s ease;
  animation: cardIn .65s .4s cubic-bezier(.16,1,.3,1) backwards;
}
.landing-home:hover { opacity: 1; color: var(--txt); }

/* ── Footer ──────────────────────────────────────────────── */
.lnd-foot {
  position: fixed; bottom:18px; left:50%; transform:translateX(-50%);
  font-size: .58rem; letter-spacing:.14em; color:rgba(255,255,255,.12);
  text-transform: uppercase; white-space:nowrap; z-index:1;
}