/* /login — direction-A skin (same palette/type as /about). Auth markup untouched. */
:root {
  color-scheme: dark;
  --ink: #fff6f2; --muted: #e8cfd6; --plum: #140a12; --pink: #f4b6c8; --peach: #ffc9a8; --blue2: #8fa0d8;
  --line: rgba(255, 214, 226, .22); --accent: var(--pink); --accent-ink: #2a0f1c;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--plum); color: var(--ink); }
body { font: 16px/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--pink); outline-offset: 2px; }

.page { position: relative; min-height: 100svh; overflow: hidden; isolation: isolate; display: grid; align-items: end; }
.bg { position: absolute; inset: -4%; z-index: 0; }
.bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.fx { position: absolute; inset: 0; z-index: 1; pointer-events: none; mix-blend-mode: screen; opacity: .5;
  background: url(/mzki-brand/about/v6.1/fx-particles.webp) center / 720px repeat; animation: drift 40s linear infinite; }
@keyframes drift { to { background-position: 0 -720px; } }
.scrim { position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(180deg, rgba(20, 10, 18, .2), rgba(20, 10, 18, 0) 30%, rgba(20, 10, 18, .35) 60%, rgba(20, 10, 18, .96) 100%); }
.name-bg { position: absolute; z-index: 3; left: 50%; top: 6svh; transform: translateX(-50%); font-family: Anton, Impact, sans-serif; text-transform: uppercase;
  font-size: clamp(5rem, 22vw, 17rem); line-height: .9; letter-spacing: .02em; color: transparent; -webkit-text-stroke: 1.5px rgba(255, 241, 236, .4); white-space: nowrap; pointer-events: none; user-select: none; }

/* character: poster (real render) + optional sprite layer driven by login-scene.js */
.girl { position: absolute; z-index: 4; left: 50%; bottom: 46svh; height: min(50svh, 860px); transform: translateX(-50%); }
.girl .poster img, .girl .sprite { filter: drop-shadow(0 30px 40px rgba(40, 10, 30, .55)); }
.girl .poster { display: block; height: 100%; }
.girl .poster img { height: 100%; width: auto; display: block; transition: opacity .35s ease; }
.girl .sprite { position: absolute; left: 50%; bottom: 0; --fx: 0%; transform: translateX(calc(-50% + var(--fx))); height: 100%; aspect-ratio: 9 / 16; opacity: 0; transition: opacity .35s ease; pointer-events: none; }
.girl .sprite .sprite-sheet { position: absolute; inset: 0; background-repeat: no-repeat; }
.girl .sprite .idle-video, .girl .sprite .idle-webp { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: bottom center; opacity: 0; transition: opacity .28s ease; }
.girl .sprite .idle-video.on, .girl .sprite .idle-webp { opacity: 1; }
.girl.live .sprite { opacity: 1; }
.girl.live .poster img { opacity: 0; }

/* card */
.card { position: relative; z-index: 5; width: min(440px, 92vw); margin: 0 auto; padding: 22px 20px 18px; border-radius: 20px 20px 0 0;
  background: rgba(20, 10, 18, .74); backdrop-filter: blur(18px) saturate(1.2); -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid var(--line); border-bottom: 0; box-shadow: 0 -20px 60px rgba(20, 6, 16, .5); }
.wordmark { display: flex; align-items: center; gap: 10px; font-size: .78rem; letter-spacing: .24em; text-transform: uppercase; font-weight: 800; color: var(--muted); margin: 0 0 14px; }
.wordmark img { width: 31px; height: 31px; image-rendering: pixelated; backface-visibility: hidden; transform: translate3d(0, 0, 0); animation: emote-bob 2.6s infinite; }
@keyframes emote-bob { 0%, 50% { transform: translate3d(0, 0, 0); } 50.01%, 100% { transform: translate3d(0, -2px, 0); } }
h1 { margin: 0 0 4px; font-family: Anton, Impact, sans-serif; font-weight: 400; text-transform: uppercase; letter-spacing: .02em; font-size: 2rem; line-height: .95; }
.sub { margin: 0 0 14px; color: var(--muted); font-size: .9rem; }
label { display: block; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 12px 0 6px; }
input[type=text], input[type=password] { width: 100%; min-height: 46px; padding: 0 14px; border-radius: 10px; border: 1px solid var(--line); background: rgba(255, 255, 255, .05); color: #fff; font: inherit; }
form.has-error input[type=text], form.has-error input[type=password] { border-color: #ff9fb3; }
.err { color: #ffb3c1; font-size: .85rem; margin: 8px 0 0; }
button[type=submit] { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 48px; margin-top: 18px; border: 0; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink); font: inherit; font-weight: 700; letter-spacing: .04em; box-shadow: 0 8px 30px rgba(244, 182, 200, .28); cursor: pointer; transition: transform .3s cubic-bezier(.2, .7, .2, 1); }
button[type=submit]:hover { transform: translateY(-1px); }
button[type=submit]:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 14px; font-size: .8rem; color: var(--muted); }
.meta .meet { color: var(--blue2); }
.meta .meet:hover { color: #fff; }
.foot { display: flex; gap: 10px; justify-content: center; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.foot .dl { display: contents; }
.foot a:hover { color: #fff; }
.quote { display: none; }

@media (min-width: 900px) {
  /* desktop: card centred, Mizuki standing behind it (slightly right of centre so her face clears the card) */
  .page { align-items: center; justify-items: stretch; }
  .name-bg { left: 4vw; transform: none; top: 8svh; }
  .girl { left: 50%; right: auto; bottom: 0; height: min(92svh, 1040px); transform: translateX(calc(-50% + 19vw)); z-index: 4; }
  .girl .poster img, .girl .sprite { filter: drop-shadow(0 30px 40px rgba(40, 10, 30, .55)); }
  .card { position: relative; z-index: 5; margin: 0; justify-self: center; width: min(440px, 42vw); border-radius: 20px; border-bottom: 1px solid var(--line); box-shadow: 0 30px 80px rgba(20, 6, 16, .6);
    background: rgba(20, 10, 18, .62); }
  .quote { display: block; position: absolute; z-index: 5; left: clamp(24px, 6vw, 110px); bottom: 5svh; margin: 0; max-width: 30ch; text-align: left; font-family: "Zen Kaku Gothic New", Inter, sans-serif; font-size: 1.05rem; color: var(--muted); text-shadow: 0 2px 20px rgba(20, 10, 18, .8); }
  .quote em { display: block; font-style: normal; color: var(--blue2); font-size: .85em; margin-bottom: .3em; }
}

@media (prefers-reduced-motion: reduce) {
  .fx, .wordmark img { animation: none; }
  .wordmark img { transform: none; }
  .girl .sprite, .girl .poster img, button[type=submit] { transition: none; }
}