/* Reset, typography, shared components (buttons, glass panels, inputs, hover effects). */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-0);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; margin: 0; line-height: 1.1; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font: inherit; color: inherit; }
::selection { background: rgba(139, 92, 246, 0.45); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.14) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.14); border-radius: 8px; }

/* Glass surfaces */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-1);
}
.glass-strong {
  background: var(--glass-strong);
  border: 1px solid var(--glass-border-hi);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  box-shadow: var(--shadow-2);
}

/* Eyebrow label with a Japanese sub-glyph, used across the UI */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-2);
}
.eyebrow .jp { font-family: var(--font-jp); font-weight: 500; letter-spacing: 0.3em; color: var(--violet-2); opacity: 0.8; }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: linear-gradient(90deg, var(--violet), transparent); }

/* Buttons: the "katana slash" shine sweep on hover is the house signature */
.btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 20px; border-radius: 999px;
  font-weight: 600; font-size: 14px; letter-spacing: 0.01em; white-space: nowrap;
  color: var(--ink-0); background: var(--glass-strong);
  border: 1px solid var(--glass-border-hi);
  transition: transform var(--dur-mid) var(--ease-spring), box-shadow var(--dur-mid) var(--ease-out),
              background var(--dur-fast), border-color var(--dur-fast);
}
.btn::before {
  content: ""; position: absolute; inset: -40% -60%; z-index: -1;
  background: linear-gradient(115deg, transparent 38%, rgba(255,255,255,0.35) 48%, rgba(255,255,255,0.05) 52%, transparent 62%);
  transform: translateX(-70%) skewX(-18deg);
  transition: transform var(--dur-slow) var(--ease-out);
  pointer-events: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,0.4); border-color: rgba(255,255,255,0.35); }
.btn:hover::before { transform: translateX(70%) skewX(-18deg); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:focus-visible { outline: 2px solid var(--violet-2); outline-offset: 2px; }
.btn svg { width: 16px; height: 16px; flex: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--violet) 0%, #a855f7 45%, var(--rose) 100%);
  border-color: rgba(255,255,255,0.25);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
}
.btn-primary:hover { box-shadow: 0 14px 40px rgba(168, 85, 247, 0.5), 0 0 0 1px rgba(255,255,255,0.3) inset; }
.btn-primary .spark { position: absolute; top: 4px; right: 10px; font-size: 10px; color: #fff; opacity: 0;
  transform: scale(0.4) rotate(-30deg); transition: all var(--dur-mid) var(--ease-spring); }
.btn-primary:hover .spark { opacity: 1; transform: scale(1) rotate(0); }

.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-1); }
.btn-ghost:hover { background: var(--glass); border-color: var(--glass-border); color: var(--ink-0); box-shadow: none; }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; }
.btn-icon { width: 38px; height: 38px; padding: 0; border-radius: 12px; }
.btn-danger:hover { border-color: rgba(244, 63, 94, 0.6); color: #fecdd3; box-shadow: 0 0 24px rgba(244,63,94,0.25); }

/* Inputs */
.input, .textarea, .select {
  width: 100%; background: rgba(0,0,0,0.25); border: 1px solid var(--glass-border);
  border-radius: 10px; padding: 9px 12px; color: var(--ink-0); outline: none;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), background var(--dur-fast);
}
.input:hover, .textarea:hover, .select:hover { border-color: var(--glass-border-hi); }
.input:focus, .textarea:focus, .select:focus { border-color: var(--violet); box-shadow: 0 0 0 3px rgba(139,92,246,0.25); background: rgba(0,0,0,0.35); }
.textarea { resize: vertical; min-height: 80px; line-height: 1.55; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink-2) 50%), linear-gradient(135deg, var(--ink-2) 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 32px; }
.select option { background: var(--bg-2); }
.label { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 6px; }
.field { margin-bottom: 14px; }

/* Chips */
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; border-radius: 999px;
  font-size: 12px; background: rgba(var(--accent-rgb, 139, 92, 246), 0.15); color: var(--accent-2, var(--violet-2));
  border: 1px solid rgba(var(--accent-rgb, 139, 92, 246), 0.35);
}

/* Tooltip (data-tip) */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip); position: absolute; left: calc(100% + 12px); top: 50%; transform: translateY(-50%) translateX(-6px);
  background: var(--bg-2); color: var(--ink-0); font-size: 12px; font-weight: 500; padding: 6px 10px; border-radius: 8px;
  border: 1px solid var(--glass-border-hi); white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity var(--dur-fast), transform var(--dur-mid) var(--ease-out); z-index: 50;
}
[data-tip]:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }
[data-tip-top]::after { left: 50%; top: auto; bottom: calc(100% + 10px); transform: translateX(-50%) translateY(6px); }
[data-tip-top]:hover::after { transform: translateX(-50%) translateY(0); }

/* Keyframes shared across pages */
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes drift { from { transform: translate3d(0, -10vh, 0) rotate(0); } to { transform: translate3d(var(--dx, 60px), 110vh, 0) rotate(540deg); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse-ring { 0% { box-shadow: 0 0 0 0 rgba(var(--accent-rgb, 139,92,246), 0.5); } 100% { box-shadow: 0 0 0 14px rgba(var(--accent-rgb, 139,92,246), 0); } }
@keyframes shimmer { from { background-position: -200% 0; } to { background-position: 200% 0; } }
@keyframes spin { to { transform: rotate(360deg); } }
.rise { animation: rise var(--dur-slow) var(--ease-out) both; }
.rise-2 { animation-delay: 120ms; } .rise-3 { animation-delay: 240ms; } .rise-4 { animation-delay: 360ms; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }