/* DIRK/OS 98 — boot, splash, login, shutdown surfaces */

/* ---------- BIOS ---------- */
#bios {
  position: absolute; inset: 0; background: #05100a; color: var(--phos);
  font-family: var(--font-mono); font-size: 14px; line-height: 1.5;
  padding: 22px 26px; overflow: hidden; text-shadow: 0 0 3px rgba(58,255,110,0.35);
}
#bios .bios-head { display: flex; justify-content: space-between; margin-bottom: 10px; color: #cfeecf; }
#bios .bios-lines { white-space: pre-wrap; }
#bios .bios-foot { position: absolute; left: 26px; bottom: 20px; color: #cfeecf; }
#bios .amber { color: var(--amber); }
#bios .cur::after { content: "\2588"; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Splash ---------- */
#splash {
  position: absolute; inset: 0; background: radial-gradient(circle at 50% 40%, #123, #05100d 70%);
  color: #fff5e6; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px;
}
#splash .logo { text-align: center; }
#splash .logo .mark {
  font-family: var(--font-ui); font-weight: 900; font-size: 60px; letter-spacing: 1px;
  color: #fff5e6; text-shadow: 3px 3px 0 #5b2d1d, 6px 6px 0 rgba(0,0,0,0.4);
}
#splash .logo .mark small { display:block; font-size: 22px; letter-spacing: 8px; color: var(--amber); margin-top: 4px; }
#splash .logo .sub { margin-top: 12px; font-family: var(--font-mono); font-size: 12px; color: #9fb; opacity: 0.8; }
#splash .barwrap { width: 340px; }
#splash .bar {
  height: 20px; background: #0a1a16; border: 2px solid;
  border-color: #3f3c34 #fffef7 #fffef7 #3f3c34; padding: 2px;
}
#splash .bar > i {
  display: block; height: 100%; width: 0%;
  background: repeating-linear-gradient(90deg, var(--amber) 0 10px, #5b2d1d 10px 14px);
}
#splash .bartext { margin-top: 8px; font-family: var(--font-mono); font-size: 12px; text-align: center; color: #cfeecf; min-height: 16px; }

/* ---------- Login ---------- */
#login {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 4px),
    radial-gradient(circle at 50% 30%, #0c6b5e, #063f37 100%);
  display: flex; align-items: center; justify-content: center;
}
#login .panel { width: 460px; }
#login .brand {
  text-align: center; padding: 14px; color: var(--title-text);
  background: linear-gradient(90deg, var(--title-a), var(--title-b));
  font-weight: 900; font-size: 22px; letter-spacing: 1px;
}
#login .brand small { display: block; font-size: 11px; letter-spacing: 3px; font-weight: normal; color: #ffdca8; margin-top: 3px; }
#login .body { padding: 16px; }
#login .prompt { margin: 2px 0 12px; font-size: 13px; }
#login .users { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
#login .user {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px; cursor: default;
  background: var(--field); border: 2px solid; border-color: var(--btn-dk) var(--btn-hi) var(--btn-hi) var(--btn-dk);
}
#login .user svg { width: 32px; height: 32px; }
#login .user .u-name { font-weight: bold; }
#login .user .u-desc { font-size: 11px; color: #6a6255; }
#login .user.sel { background: var(--sel); color: var(--sel-fg); }
#login .user.sel .u-desc { color: #f0d9c8; }
#login .user.locked { opacity: 0.65; }
#login .user.locked .u-name { font-style: italic; letter-spacing: 1px; }
#login .pw-row { display: flex; gap: 8px; align-items: center; }
#login .pw-row label { font-size: 12px; }
#login .pw-row input { flex: 1 1 auto; }
#login .pw-note { font-size: 11px; color: #6a6255; margin-top: 10px; min-height: 14px; }

/* ---------- Shutdown ---------- */
#shutdown {
  position: absolute; inset: 0; background: #05100d; color: #ffb000;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px;
  font-family: var(--font-ui); text-align: center;
}
#shutdown .big { font-size: 26px; font-weight: bold; max-width: 560px; line-height: 1.4; text-shadow: 0 0 10px rgba(255,176,0,0.3); }
#shutdown .sub { font-family: var(--font-mono); font-size: 13px; color: #9fb; }
#shutdown .restart { margin-top: 8px; }

/* Press-any-key veil over splash before audio unlock */
#press-key {
  position: absolute; inset: 0; z-index: 210; background: #000;
  color: #fff5e6; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 14px;
  font-family: var(--font-mono); cursor: pointer;
}
#press-key .k { font-size: 20px; letter-spacing: 2px; animation: pulse 1.6s ease-in-out infinite; }
#press-key .m { font-size: 12px; color: #7a9; }
@keyframes pulse { 50% { opacity: 0.35; } }

@media (prefers-reduced-motion: reduce) {
  #bios .cur::after, #press-key .k { animation: none; }
}