/* ====================================================================== *
 *  LOGIN SPLASH  ·  Training-Tool auth/login.html
 *  Ported from AI-Platform apps/static/assets/css/pages/login.css so the
 *  Training-Tool login matches the platform's brand splash.
 *
 *  Adaptations:
 *    - No per-tenant logo system → fixed AEROSOPHIA wordmark (no .ls-tenant).
 *    - No SSO providers → .ls-sso* blocks retained for future use but unused.
 *    - Hero art lives at ../vendor/images/aerosophia/ (synced by
 *      scripts/sync-design-system.sh), not the platform's assets/images path.
 *    - English-only (no Flask-Babel); copy is plain text in the template.
 *
 *  Brand-expression surface (DESIGN-SYSTEM §6 "rotor = telemetry"): needs a
 *  dark-navy hero, sky + lime accents that the component --accent/surface
 *  aliases do not cover. Per DESIGN-SYSTEM §1 escape hatch, those brand
 *  colors are declared here as FILE-PRIVATE tokens in this scoped :root
 *  (the only place hex is allowed); every rule below consumes them via var().
 *  All classes are `ls-` prefixed and scoped under `.ls` so nothing collides
 *  with the DS component styles loaded by base.html.
 * ====================================================================== */
:root{
  --ls-navy-0:#060b13; --ls-navy-1:#0d1726; --ls-navy-2:#13243a; --ls-scene:#0a1622;
  --ls-brand-300:#7dd3fc; --ls-brand-400:#38bdf8; --ls-brand-500:#0369a1; --ls-brand-700:#0c4a6e;
  --ls-live:#A8E63A;                       /* lime = "live" (telemetry) */
  --ls-white:#ffffff;
  --ls-d-text:#eaf2fb; --ls-d-soft:#d7e3f1; --ls-d-faint:#6c819a;
  --ls-ink:#0f2c3a; --ls-body:#52647a; --ls-muted:#9aa7b8; --ls-mute2:#94a3b8;
  --ls-rule:#e4e9f0; --ls-field:#f4f7fb; --ls-foot:#64748b;
  --ls-panel-top:#eef4fa; --ls-panel-bot:#e7eef6;
  --ls-danger:#dc2626; --ls-danger-bg:#fef2f2; --ls-danger-bd:#fecaca;
}

.ls{display:grid;grid-template-columns:1.12fr .88fr;min-height:100vh;
  font-family:var(--font-sans,"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif);
  color:var(--ls-ink);background:var(--ls-navy-1)}
.ls *{box-sizing:border-box}

/* ===================== LEFT · AEROSOPHIA BRAND HERO ===================== */
.ls-hero{position:relative;overflow:hidden;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:clamp(40px,4.5vw,72px);color:var(--ls-d-text)}
.ls-hero__scene{position:absolute;inset:0;background:var(--ls-scene) center/cover no-repeat;
  background-image:url("../vendor/images/aerosophia/hero-pattern.jpg")}
.ls-hero__scrim{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(46% 42% at 50% 44%, rgba(13,30,52,.78) 0%, rgba(11,23,42,.30) 55%, transparent 78%),
    radial-gradient(70% 60% at 90% 6%, rgba(99,179,237,.12) 0%, transparent 55%),
    linear-gradient(0deg, rgba(6,11,19,.6) 0%, rgba(6,11,19,0) 38%)}
@keyframes ls-rspin{to{transform:rotate(360deg)}}

.ls-hero__center{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;max-width:600px}
.ls-brand{display:flex;flex-direction:column;align-items:center}
.ls-brand__rotor{width:clamp(112px,12.5vw,162px);height:auto;aspect-ratio:1/1;margin-bottom:24px;
  filter:drop-shadow(0 0 18px rgba(99,179,237,.5)) drop-shadow(0 6px 22px rgba(0,0,0,.5));
  animation:ls-rspin 150s linear infinite;transform-origin:50% 50%}
.ls-brand__word{font-weight:800;color:var(--ls-white);font-size:clamp(42px,5.8vw,72px);line-height:.92;
  letter-spacing:.12em;padding-left:.12em;text-shadow:0 4px 30px rgba(0,0,0,.55)}
.ls-brand__desc{margin-top:11px;font-weight:700;color:var(--ls-brand-300);
  font-size:clamp(12px,1.5vw,15px);letter-spacing:.42em;padding-left:.42em;text-transform:uppercase}
.ls-hero__rule{width:72px;height:3px;border-radius:3px;margin:30px 0 22px;
  background:linear-gradient(90deg,var(--ls-brand-500),var(--ls-brand-300),var(--ls-live))}
.ls-hero__lede{font-size:clamp(15px,1.5vw,17px);line-height:1.6;color:var(--ls-d-soft);max-width:440px;
  text-shadow:0 1px 14px rgba(0,0,0,.6)}

/* live-mission strip, pinned to the foot of the hero */
.ls-mission{position:absolute;z-index:2;left:0;right:0;bottom:clamp(30px,4vw,56px);
  display:flex;align-items:center;justify-content:center;gap:clamp(20px,3vw,40px);flex-wrap:wrap;padding:0 24px}
.ls-mission__item{display:flex;flex-direction:column;gap:3px;align-items:center}
.ls-mission__k{font-family:var(--font-mono,"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace);
  font-size:10.5px;letter-spacing:.14em;color:var(--ls-d-faint);text-transform:uppercase;white-space:nowrap}
.ls-mission__v{font-family:var(--font-mono,"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace);
  font-size:14px;color:var(--ls-d-text);letter-spacing:.02em;white-space:nowrap}
.ls-mission__v .ls-live{color:var(--ls-live)}
.ls-mission__live{display:inline-flex;align-items:center;gap:7px}
.ls-mission__live .ls-dot{width:8px;height:8px;border-radius:50%;background:var(--ls-live);
  box-shadow:0 0 0 0 rgba(168,230,58,.6);animation:ls-pulse 2.2s ease-out infinite}
.ls-mission__sep{width:1px;height:30px;background:rgba(125,211,252,.18)}
@keyframes ls-pulse{0%{box-shadow:0 0 0 0 rgba(168,230,58,.55)}70%{box-shadow:0 0 0 10px rgba(168,230,58,0)}100%{box-shadow:0 0 0 0 rgba(168,230,58,0)}}

/* ===================== RIGHT · LOGIN PANEL ===================== */
.ls-panel{position:relative;display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:48px clamp(28px,3.5vw,56px);
  background:linear-gradient(180deg,var(--ls-panel-top) 0%,var(--ls-panel-bot) 100%);
  border-left:1px solid rgba(99,179,237,.16)}
.ls-panel__inner{position:relative;width:100%;max-width:404px;background:var(--ls-white);
  border:1px solid var(--ls-rule);border-radius:18px;overflow:hidden;
  padding:36px clamp(24px,3vw,34px) 32px;
  box-shadow:0 22px 50px -26px rgba(15,44,58,.40),0 3px 10px -4px rgba(15,44,58,.10)}
.ls-panel__inner::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--ls-brand-500),var(--ls-brand-300),var(--ls-live))}

.ls-form__title{font-size:23px;font-weight:800;letter-spacing:-.01em;color:var(--ls-ink);margin-bottom:4px;text-align:center}
.ls-form__sub{font-size:13.5px;color:var(--ls-body);margin-bottom:22px;text-align:center}

.ls-alert{background:var(--ls-danger-bg);border:1px solid var(--ls-danger-bd);color:var(--ls-danger);
  font-size:12.5px;font-weight:600;border-radius:10px;padding:10px 12px;margin-bottom:16px;text-align:center}

.ls-field{margin-bottom:15px}
.ls-field__label{display:block;font-size:12px;font-weight:700;color:var(--ls-ink);margin-bottom:6px;letter-spacing:.01em}
.ls-input{display:flex;align-items:center;gap:10px;background:var(--ls-field);
  border:1px solid var(--ls-rule);border-radius:11px;padding:0 13px;height:48px;
  transition:border-color .15s,box-shadow .15s,background .15s}
.ls-input:focus-within{border-color:var(--ls-brand-400);background:var(--ls-white);box-shadow:0 0 0 4px rgba(56,189,248,.16)}
.ls-input > svg{width:17px;height:17px;color:var(--ls-mute2);flex:0 0 17px}
.ls-input__field{border:0;background:transparent;outline:0;width:100%;height:100%;
  font-size:14.5px;color:var(--ls-ink);
  font-family:var(--font-sans,"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif)}
.ls-input__field::placeholder{color:var(--ls-muted)}
.ls-input__reveal{margin-left:auto;background:none;border:0;cursor:pointer;color:var(--ls-mute2);display:flex;padding:4px}
.ls-input__reveal:hover{color:var(--ls-brand-500)}
.ls-input__reveal svg{width:17px;height:17px}

.ls-form__row{display:flex;align-items:center;justify-content:flex-end;margin:2px 0 20px}

.ls-btn{display:flex;align-items:center;justify-content:center;gap:9px;width:100%;height:50px;
  border:0;border-radius:12px;cursor:pointer;font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--ls-white);
  background:linear-gradient(120deg,var(--ls-brand-700) 0%,var(--ls-brand-500) 55%,var(--ls-brand-400) 100%);
  box-shadow:0 12px 26px -12px rgba(3,105,161,.9);
  transition:transform .12s,box-shadow .15s,filter .15s}
.ls-btn:hover{filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(3,105,161,1);transform:translateY(-1px)}
.ls-btn svg{width:17px;height:17px}

.ls-btn--secondary{margin-top:12px;background:var(--ls-white);color:var(--ls-ink);
  border:1px solid var(--ls-rule);box-shadow:none;font-weight:700}
.ls-btn--secondary:hover{background:var(--ls-field);border-color:var(--ls-mute2);box-shadow:0 6px 16px -8px rgba(0,0,0,.22);filter:none;transform:none}

.ls-panel__foot{position:absolute;left:0;right:0;bottom:0;padding:20px;text-align:center;
  font-size:11px;color:var(--ls-muted);letter-spacing:.01em}
.ls-panel__foot a{color:var(--ls-foot);text-decoration:none}
.ls-panel__foot a:hover{text-decoration:underline}

@media (prefers-reduced-motion: reduce){
  .ls-brand__rotor,.ls-mission__live .ls-dot{animation:none !important}
}
@media (max-width:991px){
  .ls{grid-template-columns:1fr}
  .ls-hero{min-height:auto;padding:clamp(40px,7vw,64px) clamp(28px,6vw,48px) clamp(80px,12vw,104px)}
  .ls-panel{padding-top:44px;padding-bottom:72px;align-items:stretch}
  .ls-panel__inner{margin:0 auto}
}
@media (max-width:560px){
  .ls-hero__lede{font-size:14px}
  .ls-mission{gap:18px}
  .ls-mission__sep{display:none}
}