:root{
  --bg1: #0f172a;
  --bg2: #0ea5a4;
  --card-bg: #0f172a;
  --accent: #7c3aed;
  --glass: rgba(255,255,255,0.06);
  --muted: #9ca3af;
  --radius: 14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color-scheme: dark;
  color: #e6eef8;
}

/* Reset-ish */
*{box-sizing:border-box}
html,body{height:100%; margin:0; background: linear-gradient(135deg, #071124 0%, #071b2a 40%, #071124 100%);}
body{
  font-family:var(--font-family);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.4;
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:20px;
  align-items:center;
}

/* Header */
.site-header{
  width:100%;
  max-width:1200px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:18px 22px;
  border-radius:16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  box-shadow: 0 6px 30px rgba(2,6,23,0.6);
  border:1px solid rgba(255,255,255,0.03);
}
.brand h1{margin:0; font-size:1.35rem; letter-spacing:0.3px}
.brand .subtitle{ margin:4px 0 0; color:var(--muted); font-size:0.9rem; }

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  color:inherit;
  border:1px solid rgba(255,255,255,0.04);
  border-radius:12px;
  cursor:pointer;
  font-weight:600;
  transition: transform .18s ease, box-shadow .18s ease, background .2s ease;
  position:relative;
  overflow:hidden;
}
.btn:hover{ transform: translateY(-4px); box-shadow: 0 10px 30px rgba(2,6,23,0.6); }
.btn:active{ transform: translateY(-1px); }

.btn.ghost{
  background: transparent;
  border:1px solid rgba(255,255,255,0.06);
  color: #dbeafe;
}

/* Container & grid */
.container{ width:100%; max-width:1200px; }
.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:18px;
  margin-top:12px;
}

/* Card */
.card{
  background: linear-gradient(135deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:16px;
  padding:0;
  overflow:visible;
  min-height:220px;
  position:relative;
  border: 1px solid rgba(255,255,255,0.03);
  transform-style: preserve-3d;
  transition: transform .25s ease, box-shadow .25s ease;
  box-shadow: 0 8px 30px rgba(2,6,23,0.55);
  cursor:default;
}
.card:hover{ box-shadow: 0 18px 60px rgba(2,6,23,0.7); transform: translateY(-6px) rotateX(1deg) rotateY(1deg); }

/* decorative media */
.card-media{
  height:110px;
  border-radius:16px 16px 0 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.9), rgba(14,165,164,0.9));
  mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
  position:relative;
  overflow:hidden;
}
.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background-image: radial-gradient(circle at 10% 20%, rgba(255,255,255,0.06), transparent 8%),
                    radial-gradient(circle at 70% 80%, rgba(255,255,255,0.03), transparent 6%);
  mix-blend-mode: overlay;
  pointer-events:none;
}

/* body */
.card-body{ padding:16px; display:flex; flex-direction:column; gap:10px; }
.card-title{ margin:0; font-size:1.05rem; }
.card-desc{ margin:0; color:var(--muted); font-size:0.94rem; }

/* actions row */
.card-actions{ display:flex; gap:8px; margin-top:auto; }

/* Download button specifics */
.btn.download{ --btn-w:130px; width:var(--btn-w); justify-content:center; background:linear-gradient(90deg, rgba(255,255,255,0.015), rgba(255,255,255,0.01)); }
.btn .btn-spinner{
  width:16px; height:16px; border-radius:50%; display:inline-block; border:2px solid rgba(255,255,255,0.1); border-top-color:transparent; margin-left:6px; opacity:0; transform:scale(.8);
  transition: opacity .18s ease, transform .18s ease;
}
.btn.loading .btn-spinner{ opacity:1; animation:spin .9s linear infinite; transform:scale(1); border-top-color: #fff; }
@keyframes spin { to { transform: rotate(360deg); } }

/* success state */
.btn.success{ background: linear-gradient(90deg, rgba(34,197,94,0.18), rgba(34,197,94,0.12)); border-color: rgba(34,197,94,0.2); color:#dffcf0; }
.btn.success .btn-text{ transform: translateY(-2px); }
.btn.success::after{
  content: "✓";
  display:inline-block;
  margin-left:8px;
  font-weight:800;
}

/* ripple effect */
.btn::before{
  content:"";
  position:absolute;
  inset:0;
  background: radial-gradient(circle at var(--rx, 50%) var(--ry, 50%), rgba(255,255,255,0.06), transparent 18%);
  opacity:0;
  transition: opacity .35s ease;
  pointer-events:none;
}
.btn:active::before{ opacity:1; transition: none; }

/* toast */
.toast{
  position:fixed;
  right:20px;
  bottom:20px;
  min-width:220px;
  max-width:360px;
  background: linear-gradient(90deg, rgba(2,6,23,0.85), rgba(8,10,23,0.75));
  color:#e6f4ff;
  padding:12px 16px;
  border-radius:12px;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
  border:1px solid rgba(255,255,255,0.03);
  opacity:0;
  transform: translateY(14px);
  pointer-events:none;
  transition: opacity .28s ease, transform .28s ease;
  z-index:9999;
}

/* Responsive */
@media (max-width:1000px){
  .grid{ grid-template-columns: repeat(2, 1fr); }
  body{ padding:18px; }
}
@media (max-width:640px){
  .grid{ grid-template-columns: 1fr; gap:14px; }
  .site-header{ flex-direction:column; align-items:flex-start; gap:12px; }
}

/* entrance animation for cards */
.card{ opacity:0; transform: translateY(18px) scale(.995); animation:cardIn .6s cubic-bezier(.2,.9,.3,1) forwards; }
.card:nth-child(1){ animation-delay: .08s }
.card:nth-child(2){ animation-delay: .12s }
.card:nth-child(3){ animation-delay: .16s }
.card:nth-child(4){ animation-delay: .20s }
.card:nth-child(5){ animation-delay: .24s }
.card:nth-child(6){ animation-delay: .28s }
.card:nth-child(7){ animation-delay: .32s }
@keyframes cardIn {
  to { opacity:1; transform: translateY(0) scale(1); }
}