/* ==========================================================================
   MachineMax Secure Operations Portal — Login
   Cinematic industrial backdrop + refractive glass panel with 3D parallax.
   ========================================================================== */

:root{
  --ink-950:#05080f;
  --ink-900:#080d18;
  --ink-800:#0d1424;
  --ink-700:#131c30;
  --line:rgba(140,168,220,.14);
  --line-strong:rgba(140,168,220,.26);
  --txt:#e8eefb;
  --txt-dim:#93a4c4;
  --txt-faint:#63739244;
  --accent:#4f8cff;
  --accent-2:#22c39a;
  --accent-3:#7aa8ff;
  --danger:#ff5d7a;
  --radius:22px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  background:var(--ink-950);
  color:var(--txt);
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* ─────────────────────────────────────────────────────────────────────────
   BACKGROUND — layered depth: base wash, aurora fields, engineering grid,
   particle canvas, vignette. Every layer drifts at a different rate so the
   scene reads as volumetric rather than flat.
   ───────────────────────────────────────────────────────────────────────── */
.stage{position:fixed;inset:0;overflow:hidden;z-index:0}

.stage::before{
  content:"";position:absolute;inset:-20%;
  background:
    radial-gradient(58% 46% at 22% 18%, rgba(38,86,180,.42), transparent 62%),
    radial-gradient(52% 44% at 82% 24%, rgba(24,120,148,.30), transparent 64%),
    radial-gradient(64% 58% at 62% 92%, rgba(20,52,120,.44), transparent 66%),
    linear-gradient(168deg,#070c17 0%,#0a1122 46%,#060a13 100%);
  animation:drift 34s var(--ease) infinite alternate;
}

/* Slow-moving light fields */
.aurora{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;mix-blend-mode:screen;will-change:transform}
.aurora-1{width:56vw;height:56vw;left:-14vw;top:-18vw;background:radial-gradient(circle,rgba(79,140,255,.60),transparent 66%);animation:float-a 26s var(--ease) infinite alternate}
.aurora-2{width:48vw;height:48vw;right:-12vw;top:6vh;background:radial-gradient(circle,rgba(34,195,154,.40),transparent 66%);animation:float-b 32s var(--ease) infinite alternate}
.aurora-3{width:62vw;height:62vw;left:24vw;bottom:-30vw;background:radial-gradient(circle,rgba(122,168,255,.36),transparent 68%);animation:float-c 38s var(--ease) infinite alternate}

/* Engineering grid — the industrial signature */
.grid-plane{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(120,160,230,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,230,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 78% 68% at 50% 46%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 78% 68% at 50% 46%,#000 30%,transparent 78%);
  animation:grid-pan 44s linear infinite;
}

/* Horizon sweep — a single slow beam of light crossing the scene */
.sweep{
  position:absolute;top:0;left:-40%;width:36%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(150,190,255,.09) 44%,rgba(150,190,255,.16) 50%,rgba(150,190,255,.09) 56%,transparent);
  transform:skewX(-14deg);
  animation:sweep 15s var(--ease) infinite;
}

#particles{position:absolute;inset:0;width:100%;height:100%;opacity:.65}

.vignette{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 96% 84% at 50% 42%,transparent 34%,rgba(3,6,12,.62) 88%);
}

@keyframes drift{
  0%  {transform:translate3d(0,0,0) scale(1)}
  100%{transform:translate3d(-2.5%,-1.8%,0) scale(1.06)}
}
@keyframes float-a{0%{transform:translate3d(0,0,0)}100%{transform:translate3d(9vw,7vh,0)}}
@keyframes float-b{0%{transform:translate3d(0,0,0)}100%{transform:translate3d(-8vw,10vh,0)}}
@keyframes float-c{0%{transform:translate3d(0,0,0)}100%{transform:translate3d(6vw,-8vh,0)}}
@keyframes grid-pan{0%{background-position:0 0,0 0}100%{background-position:64px 128px,64px 128px}}
@keyframes sweep{
  0%,72%{transform:translateX(0) skewX(-14deg);opacity:0}
  78%   {opacity:1}
  100%  {transform:translateX(400%) skewX(-14deg);opacity:0}
}

/* ─────────────────────────────────────────────────────────────────────────
   LAYOUT
   ───────────────────────────────────────────────────────────────────────── */
.shell{
  position:relative;z-index:2;height:100%;
  display:grid;place-items:center;
  padding:28px 20px;
  overflow-y:auto;
}

/* The 3D scene: perspective lives on the wrapper, transforms on the card. */
.scene{perspective:1400px;perspective-origin:50% 44%;width:100%;max-width:432px}

/* ─────────────────────────────────────────────────────────────────────────
   GLASS PANEL
   ───────────────────────────────────────────────────────────────────────── */
.panel{
  position:relative;
  padding:38px 34px 30px;
  border-radius:var(--radius);
  background:
    linear-gradient(158deg,rgba(255,255,255,.13),rgba(255,255,255,.05) 42%,rgba(255,255,255,.02) 100%),
    rgba(16,24,42,.52);
  border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(26px) saturate(165%);
  -webkit-backdrop-filter:blur(26px) saturate(165%);
  box-shadow:
    0 42px 84px -28px rgba(0,0,0,.78),
    0 8px 26px -12px rgba(0,0,0,.5),
    inset 0 1px 0 rgba(255,255,255,.28),
    inset 0 -1px 0 rgba(255,255,255,.05);
  transform-style:preserve-3d;
  transition:transform .18s var(--ease), box-shadow .4s var(--ease);
  animation:panel-in 1.05s var(--ease) both;
  will-change:transform;
}

/* Refraction: a bright rim that catches the ambient light */
.panel::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(150deg,rgba(255,255,255,.55),rgba(255,255,255,.05) 34%,transparent 56%,rgba(122,168,255,.28));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;
}

/* Specular highlight that tracks the pointer (position set from JS) */
.panel::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.14),transparent 62%);
  opacity:0;transition:opacity .45s var(--ease);
}
.panel:hover::after,.panel:focus-within::after{opacity:1}

@keyframes panel-in{
  0%  {opacity:0;transform:translateY(34px) scale(.94) rotateX(9deg);filter:blur(9px)}
  60% {opacity:1;filter:blur(0)}
  100%{opacity:1;transform:translateY(0) scale(1) rotateX(0);filter:blur(0)}
}

/* Children float above the glass in Z, which is what sells the depth */
.panel > *{transform:translateZ(24px)}
.brand{transform:translateZ(44px)}
.btn-login{transform:translateZ(38px)}

/* Error shake */
.panel.shake{animation:shake .5s cubic-bezier(.36,.07,.19,.97) both}
@keyframes shake{
  10%,90%{transform:translateX(-2px)}
  20%,80%{transform:translateX(4px)}
  30%,50%,70%{transform:translateX(-8px)}
  40%,60%{transform:translateX(8px)}
}

/* ─────────────────────────────────────────────────────────────────────────
   BRAND
   ───────────────────────────────────────────────────────────────────────── */
.brand{display:flex;align-items:center;gap:13px;margin-bottom:26px}
.brand-mark{
  width:46px;height:46px;flex:none;display:grid;place-items:center;
  border-radius:13px;color:#cfe0ff;
  background:linear-gradient(150deg,rgba(79,140,255,.34),rgba(34,195,154,.16));
  border:1px solid rgba(160,195,255,.30);
  box-shadow:0 8px 22px -8px rgba(79,140,255,.6),inset 0 1px 0 rgba(255,255,255,.32);
}
.brand-mark svg,.brand-mark img{width:24px;height:24px;display:block;object-fit:contain}
.brand-text{min-width:0;display:block}
.brand-name{display:block;font-size:16px;font-weight:700;letter-spacing:.24px;line-height:1.2}
.brand-sub{display:block;font-size:10.5px;color:var(--txt-dim);letter-spacing:1.1px;text-transform:uppercase;margin-top:4px}

.title{font-size:27px;font-weight:700;letter-spacing:-.5px;margin:0 0 7px}
.subtitle{font-size:13.5px;color:var(--txt-dim);margin:0 0 26px;line-height:1.55}

/* ─────────────────────────────────────────────────────────────────────────
   FORM
   ───────────────────────────────────────────────────────────────────────── */
.field{position:relative;margin-bottom:15px}

.field input{
  width:100%;height:54px;
  padding:22px 46px 8px 15px;
  font-size:14.5px;font-family:inherit;color:var(--txt);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:13px;
  outline:none;
  transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
.field input:hover{background:rgba(255,255,255,.07)}
.field input:focus{
  border-color:rgba(110,168,255,.62);
  background:rgba(255,255,255,.08);
  box-shadow:0 0 0 3.5px rgba(79,140,255,.16);
}
.field input::placeholder{color:transparent}

/* Floating label */
.field label{
  position:absolute;left:16px;top:17px;
  font-size:14px;color:var(--txt-dim);
  pointer-events:none;
  transform-origin:left top;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label{
  transform:translateY(-10px) scale(.76);
  color:var(--accent-3);
}

/* Trailing icon buttons */
.field-icon{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:38px;height:38px;display:grid;place-items:center;
  border:0;background:none;color:var(--txt-dim);cursor:pointer;border-radius:10px;
  transition:color .2s,background .2s;
}
.field-icon:hover{color:var(--txt);background:rgba(255,255,255,.07)}
.field-icon:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.field-icon svg{width:19px;height:19px}
.field-icon.static{pointer-events:none}

/* Remember row */
.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 22px}
.check{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:13px;color:var(--txt-dim);user-select:none}
.check input{position:absolute;opacity:0;width:0;height:0}
.check .box{
  width:18px;height:18px;flex:none;border-radius:6px;
  border:1px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.05);
  display:grid;place-items:center;
  transition:all .2s var(--ease);
}
.check .box svg{width:11px;height:11px;opacity:0;transform:scale(.5);transition:all .2s var(--ease);color:#04121c}
.check input:checked + .box{
  background:linear-gradient(140deg,var(--accent-2),#3ecfd6);
  border-color:transparent;
  box-shadow:0 3px 12px -3px rgba(34,195,154,.7);
}
.check input:checked + .box svg{opacity:1;transform:scale(1)}
.check input:focus-visible + .box{box-shadow:0 0 0 3px rgba(79,140,255,.35)}
.hint{font-size:12px;color:#5f6f8d}

/* Submit */
.btn-login{
  position:relative;width:100%;height:52px;
  border:0;border-radius:13px;cursor:pointer;
  font-family:inherit;font-size:15px;font-weight:650;letter-spacing:.3px;color:#03101f;
  background:linear-gradient(122deg,#6ea8ff 0%,#4f8cff 42%,#22c39a 100%);
  box-shadow:0 14px 30px -12px rgba(79,140,255,.75),inset 0 1px 0 rgba(255,255,255,.42);
  overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .28s var(--ease),filter .2s;
}
.btn-login:hover:not(:disabled){transform:translateZ(38px) translateY(-2px);box-shadow:0 20px 38px -12px rgba(79,140,255,.85),inset 0 1px 0 rgba(255,255,255,.5)}
.btn-login:active:not(:disabled){transform:translateZ(38px) translateY(0) scale(.988)}
.btn-login:disabled{cursor:progress;filter:saturate(.55) brightness(.9)}
.btn-login:focus-visible{outline:2px solid #cfe0ff;outline-offset:3px}

/* Light streak across the button */
.btn-login::after{
  content:"";position:absolute;top:0;left:-120%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.42),transparent);
  transform:skewX(-18deg);
}
.btn-login:hover:not(:disabled)::after{animation:streak .85s var(--ease)}
@keyframes streak{to{left:150%}}

.btn-label{display:inline-flex;align-items:center;gap:9px;justify-content:center}
.spinner{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(3,16,31,.32);border-top-color:#03101f;
  animation:spin .7s linear infinite;display:none;
}
.btn-login.loading .spinner{display:inline-block}
.btn-login.loading .btn-text{opacity:.8}
@keyframes spin{to{transform:rotate(360deg)}}

/* ─────────────────────────────────────────────────────────────────────────
   MESSAGES
   ───────────────────────────────────────────────────────────────────────── */
.alert{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 13px;margin-bottom:18px;
  font-size:13px;line-height:1.5;border-radius:11px;
  animation:alert-in .35s var(--ease) both;
}
.alert svg{width:16px;height:16px;flex:none;margin-top:1px}
.alert-error{background:rgba(255,93,122,.13);border:1px solid rgba(255,93,122,.34);color:#ffc2ce}
.alert-info {background:rgba(79,140,255,.12);border:1px solid rgba(79,140,255,.32);color:#c5d9ff}
@keyframes alert-in{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

.foot{
  margin-top:24px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.09);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:11.5px;color:#5c6b88;
}
.foot .secure{display:inline-flex;align-items:center;gap:6px}
.foot svg{width:13px;height:13px}

/* ─────────────────────────────────────────────────────────────────────────
   RESPONSIVE
   ───────────────────────────────────────────────────────────────────────── */
@media (max-width:520px){
  body{overflow:auto}
  .shell{padding:22px 16px;align-items:flex-start}
  .scene{max-width:100%;margin-top:4vh}
  .panel{padding:30px 22px 24px;border-radius:20px}
  .title{font-size:24px}
  .grid-plane{background-size:44px 44px}
  .foot{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-height:640px){
  .shell{align-items:flex-start}
  .panel{padding-top:26px}
  .subtitle{margin-bottom:18px}
}

/* ─────────────────────────────────────────────────────────────────────────
   ACCESSIBILITY — motion is decoration, never a requirement
   ───────────────────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .panel{animation:none;opacity:1;transform:none}
  .sweep,#particles{display:none}
}