/* DTIS public pages: landing, login and offline. Tokens follow design/dtis-web-brand-refactor/references/brand-tokens.json. */
/* Ravi is licensed and not committed: place the owner's files in infra/nginx/public/static/fonts/ (see README there). */
@font-face{font-family:'Ravi';src:url('/static/fonts/Ravi-Light.woff2') format('woff2'),url('/static/fonts/Ravi-Light.ttf') format('truetype');font-weight:300;font-display:swap}
@font-face{font-family:'Ravi';src:url('/static/fonts/Ravi-Regular.woff2') format('woff2'),url('/static/fonts/Ravi-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:'Ravi';src:url('/static/fonts/Ravi-Medium.woff2') format('woff2'),url('/static/fonts/Ravi-Medium.ttf') format('truetype');font-weight:500;font-display:swap}
@font-face{font-family:'Ravi';src:url('/static/fonts/Ravi-Bold.woff2') format('woff2'),url('/static/fonts/Ravi-Bold.ttf') format('truetype');font-weight:700;font-display:swap}
@font-face{font-family:'Ravi';src:url('/static/fonts/Ravi-Black.woff2') format('woff2'),url('/static/fonts/Ravi-Black.ttf') format('truetype');font-weight:900;font-display:swap}

:root{
  --navy-950:#06142E;--navy-900:#0B1F4B;--navy-800:#123773;
  --blue-600:#2563FF;--blue-500:#3B82F6;--cyan-300:#67C9FF;
  --bg:#F8FAFF;--surface:#FFFFFF;--surface-muted:#EAF3FF;--border:#DAE5F5;
  --text:#111827;--muted:#64748B;--danger:#B91C1C;--success:#166534;
  --on-dark:#F8FAFC;--on-dark-muted:#C7D6F2;--dark-border:rgba(191,219,254,.16);--dark-overlay:rgba(255,255,255,.06);
  --r-sm:8px;--r-control:12px;--r-card:20px;--r-hero:28px;
  --shadow-card:0 12px 38px rgba(11,31,75,.08);--shadow-hover:0 24px 56px rgba(11,31,75,.14);
  --ease:cubic-bezier(.2,.8,.2,1);--fast:160ms;--base:220ms;--slow:320ms;
  --font:'Ravi',Tahoma,'Segoe UI',sans-serif;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:400 16px/1.85 var(--font);color:var(--text);background:var(--bg);min-height:100dvh}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-600)}
h1,h2,h3,p{margin:0}
button,input{font:inherit}
.ltr{direction:ltr;unicode-bidi:isolate;display:inline-block}
.skip{position:absolute;inset-inline-start:16px;top:-60px;background:var(--surface);color:var(--navy-900);padding:8px 14px;border-radius:var(--r-sm);z-index:10}
.skip:focus{top:12px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-control);font:700 15px/1.5 var(--font);text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease),background-color var(--fast) ease}
.btn-primary{color:#fff;background:linear-gradient(120deg,var(--blue-600),#1153DA);box-shadow:0 8px 20px rgba(37,99,255,.22)}
.btn-ghost-dark{color:var(--on-dark);background:var(--dark-overlay);border-color:var(--dark-border)}
.btn-secondary{color:var(--navy-900);background:var(--surface);border-color:#CBDDFB}
@media(hover:hover) and (pointer:fine){.btn:not(:disabled):hover{transform:translateY(-2px)}.btn-primary:hover{box-shadow:0 14px 28px rgba(37,99,255,.3)}}
.btn:active:not(:disabled){transform:scale(.985)}
.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid var(--cyan-300);outline-offset:3px}
.btn[hidden]{display:none}

/* Landing: header + hero */
.hero{position:relative;isolation:isolate;overflow:hidden;color:var(--on-dark);background:var(--navy-950)}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,rgba(6,20,46,.25),rgba(6,20,46,.82)),url('/static/brand/bg-aurora.svg') center/cover no-repeat}
.hero::after{content:"";position:absolute;z-index:-1;width:520px;height:520px;inset-inline-end:-160px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,255,.32),transparent 65%);animation:float 18s ease-in-out infinite alternate}
@keyframes float{to{transform:translate3d(0,-8px,0)}}
.topnav{max-width:1200px;margin:0 auto;padding:20px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topnav .mark{display:flex;align-items:center;gap:12px;color:var(--on-dark);text-decoration:none;font-weight:700}
.topnav .mark img{width:44px}
.topnav .mark small{display:block;font-weight:400;font-size:12px;color:var(--on-dark-muted);line-height:1.4}
.topnav .actions{display:flex;gap:10px;align-items:center}
.hero-body{max-width:1200px;margin:0 auto;padding:56px 16px 96px;display:grid;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--dark-overlay);border:1px solid var(--dark-border);color:var(--on-dark-muted);font-size:13px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan-300)}
.hero h1{font-size:clamp(30px,5vw,44px);line-height:1.3;font-weight:900;margin:20px 0 16px;max-width:640px}
.hero p.lead{font-size:17px;color:var(--on-dark-muted);max-width:560px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-card{background:rgba(11,31,75,.55);border:1px solid var(--dark-border);border-radius:var(--r-hero);padding:32px;backdrop-filter:blur(6px);display:grid;gap:20px;justify-items:center;text-align:center}
.hero-card img{width:min(300px,80%)}
.hero-card ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.hero-card li{padding:6px 14px;border-radius:999px;background:var(--dark-overlay);border:1px solid var(--dark-border);font-size:13px;direction:ltr}

/* Landing: sections */
.section{max-width:1200px;margin:0 auto;padding:72px 16px}
.section-head{max-width:640px;margin-bottom:40px}
.section-head .kicker{color:var(--blue-600);font-weight:700;font-size:14px}
.section-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.35;font-weight:900;color:var(--navy-900);margin-top:6px}
.section-head p{color:var(--muted);margin-top:10px}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-card);
  transition:transform var(--base) var(--ease),box-shadow var(--base) var(--ease)}
@media(hover:hover) and (pointer:fine){.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}}
.card .icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--surface-muted);color:var(--blue-600);margin-bottom:16px}
.card .icon svg{width:24px;height:24px}
.card h3{font-size:20px;line-height:1.5;color:var(--navy-900);margin-bottom:8px}
.card p{color:var(--muted);font-size:15px;line-height:1.85}
.band{background:var(--navy-950);color:var(--on-dark);position:relative;isolation:isolate;overflow:hidden}
.band::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.9;background:url('/static/brand/bg-constellation.svg') center/cover no-repeat}
.band .section-head h2{color:var(--on-dark)}.band .section-head p{color:var(--on-dark-muted)}.band .section-head .kicker{color:var(--cyan-300)}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));counter-reset:step}
.steps li{counter-increment:step;background:rgba(11,31,75,.6);border:1px solid var(--dark-border);border-radius:var(--r-card);padding:24px}
.steps li::before{content:counter(step);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--blue-600);color:#fff;font-weight:700;margin-bottom:12px}
.steps h3{font-size:18px;margin-bottom:6px}.steps p{color:var(--on-dark-muted);font-size:15px}
.pwa{background:var(--surface-muted) url('/static/brand/bg-pale-grid.svg') center/cover no-repeat;border-radius:var(--r-hero);padding:40px 28px;display:grid;gap:20px;align-items:center;border:1px solid var(--border)}
.pwa h2{font-size:26px;line-height:1.4;color:var(--navy-900);font-weight:900}
.pwa p{color:#334155}
.pwa .cta{display:flex;flex-wrap:wrap;gap:12px}
.note{font-size:13px;color:var(--muted)}
.footer{border-top:1px solid var(--border);background:var(--surface)}
.footer .section{padding:28px 16px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted)}
.footer img{width:120px}

/* Login */
.auth{min-height:100dvh;display:grid}
.auth-art{display:none;position:relative;isolation:isolate;overflow:hidden;color:var(--on-dark);background:var(--navy-950);padding:48px}
.auth-art::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(0deg,rgba(6,20,46,.7),rgba(6,20,46,.1)),url('/static/brand/bg-aurora.svg') center/cover no-repeat}
.auth-art img{width:240px}
.auth-art h2{font-size:34px;line-height:1.35;font-weight:900;margin:auto 0 12px;max-width:460px}
.auth-art p{color:var(--on-dark-muted);max-width:440px}
.auth-art .inner{height:100%;display:flex;flex-direction:column;gap:24px}
.auth-side{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 16px;background:var(--bg) url('/static/brand/bg-pale-grid.svg') center/cover no-repeat}
.auth-card{width:min(440px,100%);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:32px 28px;box-shadow:var(--shadow-card);animation:enter var(--slow) var(--ease) both}
@keyframes enter{from{opacity:.75;transform:translateY(8px)}to{opacity:1;transform:none}}
.auth-card .logo{width:150px;margin:0 auto 20px}
.auth-card h1{font-size:26px;line-height:1.4;font-weight:900;color:var(--navy-900);text-align:center}
.auth-card>p{color:var(--muted);font-size:14px;text-align:center;margin:6px 0 8px}
.auth-card label{display:block;font-weight:700;font-size:14px;color:var(--navy-900);margin:18px 0 8px}
.auth-card input{width:100%;min-height:44px;padding:10px 14px;border-radius:var(--r-control);border:1px solid var(--border);background:#fff;color:var(--text)}
.auth-card input:focus{border-color:var(--blue-600);box-shadow:0 0 0 4px rgba(37,99,255,.12);outline:none}
.auth-card .btn-primary{width:100%;margin-top:24px}
.captcha{display:flex;gap:10px;align-items:center}
.captcha img{border:1px solid var(--border);border-radius:var(--r-sm);max-width:calc(100% - 56px);background:#fff}
.captcha button{flex:none;width:46px;height:46px;border-radius:var(--r-control);border:1px solid #CBDDFB;background:var(--surface-muted);color:var(--navy-900);cursor:pointer;font-size:18px}
#error{display:none;margin-top:16px;padding:10px 14px;border-radius:var(--r-control);background:#FEF2F2;border:1px solid #FECACA;color:var(--danger);font-size:14px}
.auth-card small{display:block;margin-top:20px;text-align:center;color:var(--muted);font-size:12px;line-height:1.7}
.back{margin-top:20px;font-size:14px;color:var(--navy-900);text-decoration:none;font-weight:700}
.back:hover{text-decoration:underline}

/* Offline */
.offline{min-height:100dvh;display:grid;place-items:center;padding:24px 16px;background:var(--navy-950) url('/static/brand/bg-constellation.svg') center/cover no-repeat;color:var(--on-dark);text-align:center}
.offline .box{max-width:420px;display:grid;gap:16px;justify-items:center}
.offline img{width:72px}
.offline h1{font-size:26px;font-weight:900}
.offline p{color:var(--on-dark-muted)}

@media(min-width:768px){
  .topnav{padding:24px 32px}
  .hero-body{padding:72px 32px 120px;grid-template-columns:1.2fr .8fr}
  .section{padding:96px 32px}
  .footer .section{padding:32px}
  .pwa{grid-template-columns:1.4fr .6fr;padding:48px}
}
@media(min-width:1024px){
  .auth{grid-template-columns:1fr 1fr}
  .auth-art{display:block}
}
@media(max-width:480px){
  .topnav .mark small{display:none}
  .topnav .btn{padding:0 14px}
  .hero-card{padding:24px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .hero::after{animation:none}
}