/* ============================================================================
   ACM CAMPUS — student sign-in / registration
   Same tokens as the public site (site/acm-site.css): navy #102d41,
   teal #33998b, gold #dda440, Poppins, 16px cards, pill buttons.
   ============================================================================ */
:root{
  --primary:#102d41; --secondary:#33998b; --secondary-deep:#2a8074; --accent:#dda440;
  --fg:#121f2b; --muted:#f5fafa; --muted-fg:#657380; --border:#e6edf0; --input:#e1e8eb;
  --grad-mint:linear-gradient(135deg,#edf7f6,#f1f6f9);
  --grad-primary:linear-gradient(135deg,#102d41,#33998b);
  --hero-overlay:linear-gradient(135deg,#102d41e6,#297a70b3);
  --shadow-card:0 2px 16px -4px #102d410f;
  --shadow-hover:0 4px 10px -2px #102d4112,0 16px 34px -10px #102d4129;
  --font:'Poppins','Noto Sans Sinhala',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body.acm-auth{font-family:var(--font);font-size:15px;line-height:1.5;color:var(--fg);background:#fff;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.acm-auth a{color:inherit;text-decoration:none}
.acm-auth button,.acm-auth input,.acm-auth select{font:inherit;color:inherit}

.auth-shell{display:flex;min-height:100vh}

/* ---------- LEFT: campus photo panel (same look as the home hero) ---------- */
.auth-aside{position:sticky;top:0;flex:1.05;height:100vh;display:flex;flex-direction:column;justify-content:space-between;
  padding:40px clamp(32px,4.5vw,64px);color:#fff;background:var(--primary);overflow:hidden}
.auth-aside-media{position:absolute;inset:0}
.auth-aside-media img{width:100%;height:100%;object-fit:cover}
.auth-aside-media::after{content:"";position:absolute;inset:0;background:var(--hero-overlay)}
.auth-aside>*:not(.auth-aside-media){position:relative;z-index:1}
.auth-aside-logo img{height:56px;width:auto}
.auth-aside-copy{max-width:560px}
.auth-badge{display:inline-block;background:rgba(221,164,64,.2);color:var(--accent);backdrop-filter:blur(4px);
  padding:6px 16px;border-radius:999px;font-size:13px;font-weight:500;margin-bottom:22px}
.auth-aside h1{font-size:clamp(32px,3.4vw,50px);font-weight:700;line-height:1.1;letter-spacing:-.5px;margin-bottom:18px}
.auth-aside h1 span{color:#8fdccf}
.auth-aside p{font-size:16px;line-height:1.7;color:rgba(255,255,255,.8);max-width:500px}
.auth-points{display:flex;flex-wrap:wrap;gap:10px}
.auth-points li{list-style:none;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(6px);font-size:13px;font-weight:500}
.auth-points i{color:var(--accent)}

/* ---------- RIGHT: form column ---------- */
.auth-main{flex:1;display:flex;flex-direction:column;min-height:100vh;background:var(--muted)}
.auth-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px clamp(20px,4vw,48px)}
.auth-top-logo{display:none}
.auth-top-logo img{height:40px;width:auto}
.auth-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:rgba(18,31,43,.75)!important;transition:color .15s}
.auth-back:hover{color:var(--secondary)!important}
.auth-top-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang-pick{display:inline-flex;background:#fff;border:1px solid var(--border);border-radius:999px;overflow:hidden}
.lang-pick a{padding:6px 14px;font-size:13px;font-weight:600;color:var(--muted-fg)!important;transition:.15s}
.lang-pick a:hover{color:var(--primary)!important}
.lang-pick a.on{background:var(--primary);color:#fff!important}

.auth-center{flex:1;display:flex;align-items:center;justify-content:center;padding:12px clamp(16px,4vw,48px) 40px}
.auth-card{width:100%;max-width:460px;background:#fff;border:1px solid var(--border);border-radius:24px;
  padding:40px;box-shadow:var(--shadow-card)}
.auth-card.is-wide{max-width:580px}
.auth-eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--secondary);margin-bottom:10px}
.auth-card h2{font-size:30px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.4px;margin-bottom:8px}
.auth-card .auth-sub{color:var(--muted-fg);font-size:14px;line-height:1.65;margin-bottom:28px}

.auth-error{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;margin-bottom:22px;border-radius:12px;
  background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:14px;font-weight:500;line-height:1.5}
.auth-error i{margin-top:3px}

.form-group{margin-bottom:18px}
.form-group>label{display:block;font-size:13px;font-weight:500;color:var(--fg);margin-bottom:8px}
.form-group>label .opt{color:var(--muted-fg);font-weight:400}
.form-group>label .req{color:#dc2626}
.input-wrapper{position:relative;display:flex;align-items:center}
.input-wrapper .field-icon{position:absolute;left:16px;color:var(--muted-fg);font-size:15px;pointer-events:none;transition:color .15s}
.input-wrapper input,.input-wrapper select{width:100%;height:50px;padding:0 16px 0 46px;background:#fff;border:1px solid var(--input);
  border-radius:12px;font-size:15px;color:var(--fg);outline:none;transition:border-color .15s,box-shadow .15s;appearance:none;-webkit-appearance:none}
.input-wrapper select{padding-right:40px;cursor:pointer}
.input-wrapper input::placeholder{color:#a3adb5}
.input-wrapper input:focus,.input-wrapper select:focus{border-color:var(--secondary);box-shadow:0 0 0 4px rgba(51,153,139,.14)}
.input-wrapper:focus-within .field-icon{color:var(--secondary)}
.password-toggle{position:absolute;right:14px;padding:6px;color:var(--muted-fg);cursor:pointer;font-size:15px}
.password-toggle:hover{color:var(--primary)}
.input-wrapper input[type=password],.input-wrapper input#password{padding-right:46px}
.select-arrow{position:absolute;right:16px;color:var(--muted-fg);font-size:12px;pointer-events:none}

.mode-options{display:flex;gap:10px;flex-wrap:wrap}
.mode-option{flex:1;min-width:130px;display:flex;align-items:center;gap:10px;padding:13px 16px;border:1px solid var(--input);
  border-radius:12px;background:#fff;font-weight:500;cursor:pointer;transition:border-color .15s,background .15s}
.mode-option input{width:18px;height:18px;accent-color:var(--secondary)}
.mode-option:has(input:checked){border-color:var(--secondary);background:#edf7f6}

.auth-forgot{display:flex;justify-content:flex-end;margin:-6px 0 14px}
.auth-forgot a,.auth-link{color:var(--secondary)!important;font-weight:600}
.auth-forgot a{font-size:13px}
.auth-forgot a:hover,.auth-link:hover{color:var(--secondary-deep)!important;text-decoration:underline}

.acm-auth .auth-btn{width:100%;height:52px;margin-top:6px;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  background:var(--grad-primary);color:#fff;border:0;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;
  box-shadow:var(--shadow-hover);transition:opacity .15s,transform .15s}
.acm-auth .auth-btn:hover{opacity:.92;transform:translateY(-1px)}

.auth-alt{margin-top:22px;text-align:center;font-size:14px;color:var(--muted-fg)}
.auth-extra{margin-top:18px;padding-top:18px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:10px}
.auth-extra a{display:flex;align-items:center;justify-content:center;gap:8px;padding:11px 14px;border:1px solid var(--border);
  border-radius:999px;font-size:14px;font-weight:500;color:var(--primary)!important;background:#fff;transition:border-color .15s,background .15s}
.auth-extra a:hover{border-color:var(--secondary);background:#f5fafa}
.auth-extra a i{color:var(--secondary)}

.auth-foot{padding:0 20px 24px;text-align:center;font-size:12.5px;color:var(--muted-fg)}

/* SweetAlert in the site palette */
.acm-auth .swal2-popup{font-family:var(--font);border-radius:20px}
.acm-auth .swal2-styled.swal2-confirm{border-radius:999px!important;padding:10px 28px}

/* ---------- responsive ---------- */
@media(max-width:991px){
  .auth-aside{display:none}
  .auth-main{background:var(--grad-mint)}
  .auth-top{background:rgba(255,255,255,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);padding:14px 16px;position:sticky;top:0;z-index:10}
  .auth-top-logo{display:block}
  .auth-back span{display:none}
  .auth-center{align-items:flex-start;padding:28px 16px 32px}
}
@media(max-width:480px){
  .auth-card{padding:28px 20px;border-radius:20px}
  .auth-card h2{font-size:25px}
  .auth-top-logo img{height:34px}
  .lang-pick a{padding:6px 10px}
}