/* ============================ RESET & VARIABLES ============================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-deep:#03051a;
  --glass-bg:rgba(255,255,255,0.045);
  --glass-border:rgba(255,255,255,0.12);
  --glass-hover:rgba(255,255,255,0.08);
  --neon-blue:#00d4ff;
  --neon-purple:#a855f7;
  --text-primary:#ffffff;
  --text-secondary:rgba(255,255,255,0.72);
  --text-muted:rgba(255,255,255,0.5);
  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --ease:cubic-bezier(0.22,1,0.36,1);
}
html{}
body{
  font-family:var(--font-body);
  background:var(--bg-deep);
  color:var(--text-primary);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;outline:none}


/* Background handled by .auth-bg in HTML */
body{overflow-x:hidden;line-height:1.6;-moz-osx-font-smoothing:grayscale}
body::before,body::after{display:none}

/* ============================ AUTH LAYOUT ============================ */
.auth-bg{position:fixed;inset:0;z-index:0;overflow:hidden}
.auth-bg picture,.auth-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
.auth-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(3,5,26,0.55) 0%,rgba(3,5,26,0.35) 45%,rgba(3,5,26,0.8) 100%);pointer-events:none}
.auth-wrap{position:relative;z-index:2;min-height:100vh;max-width:1600px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;align-items:stretch}
.auth-brand{position:relative;display:flex;flex-direction:column;justify-content:space-between;padding:56px 64px;overflow:hidden}
.auth-brand::before{content:'';position:absolute;top:15%;left:-10%;width:460px;height:460px;background:radial-gradient(circle,rgba(0,212,255,0.10) 0%,transparent 60%);pointer-events:none}
.auth-brand::after{content:'';position:absolute;bottom:5%;right:-5%;width:380px;height:380px;background:radial-gradient(circle,rgba(168,85,247,0.10) 0%,transparent 60%);pointer-events:none}
.auth-logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:3px;color:#fff;position:relative;z-index:2}
.auth-logo .logo-dot{width:11px;height:11px;background:linear-gradient(135deg,var(--neon-blue),var(--neon-purple));border-radius:50%;box-shadow:0 0 14px rgba(0,212,255,0.7);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 14px rgba(0,212,255,0.7);transform:scale(1)}50%{box-shadow:0 0 22px rgba(0,212,255,1);transform:scale(1.18)}}
.auth-brand-center{position:relative;z-index:2;max-width:440px;margin-left:auto;margin-right:24px}
.auth-brand-center h1{font-family:var(--font-display);font-size:clamp(36px,4.5vw,56px);font-weight:700;line-height:1.12;margin-bottom:20px;background:linear-gradient(135deg,#ffffff 0%,#e0e7ff 45%,var(--neon-blue) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.auth-brand-center p{font-size:17px;color:var(--text-secondary);line-height:1.7}
.auth-brand-center .brand-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.brand-tag{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;font-size:13px;font-weight:500;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:40px;color:var(--text-secondary);backdrop-filter:blur(12px)}
.tag-icon{width:15px;height:15px;flex:0 0 auto;fill:none;stroke:#22d3ee;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.auth-brand-foot{position:relative;z-index:2;font-size:13px;color:var(--text-muted)}
.auth-form-side{display:flex;align-items:center;justify-content:flex-start;padding:48px 40px 48px 64px;position:relative}
.auth-card{width:100%;max-width:420px;background:var(--glass-bg);backdrop-filter:blur(24px) saturate(180%);-webkit-backdrop-filter:blur(24px) saturate(180%);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:44px 40px;box-shadow:0 20px 60px rgba(0,0,0,0.4)}
.auth-card h2{font-family:var(--font-display);font-size:30px;font-weight:700;margin-bottom:8px}
.auth-card .sub{font-size:14px;color:var(--text-muted);margin-bottom:32px}
.auth-card .sub a{color:var(--neon-blue);font-weight:500}
.auth-card .sub a:hover{text-decoration:underline}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}
.field input{width:100%;padding:14px 16px;font-size:15px;font-family:inherit;color:#fff;background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);border-radius:var(--radius-sm);transition:border-color 0.3s,background 0.3s}
.field input::placeholder{color:rgba(255,255,255,0.35)}
.field input:focus{border-color:rgba(0,212,255,0.5);background:rgba(0,212,255,0.06);box-shadow:0 0 0 3px rgba(0,212,255,0.12)}
.field-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;font-size:14px}
.field-row label{display:flex;align-items:center;gap:8px;color:var(--text-secondary);cursor:pointer}
.field-row input[type=checkbox]{width:16px;height:16px;accent-color:var(--neon-blue);cursor:pointer}
.field-row a{color:var(--neon-blue);font-weight:500}
.field-row a:hover{text-decoration:underline}
.btn-primary{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 24px;font-size:15px;font-weight:600;background:linear-gradient(135deg,var(--neon-blue),var(--neon-purple));border-radius:var(--radius-sm);color:#fff;box-shadow:0 4px 30px rgba(0,212,255,0.35);transition:all 0.3s var(--ease)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 40px rgba(0,212,255,0.5)}
.back-bar{position:fixed;top:24px;right:max(28px,calc(50% - 800px + 28px));z-index:5;display:flex;gap:8px;align-items:center}
.back-home{font-size:13px;font-weight:500;color:var(--text-secondary);display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:40px;backdrop-filter:blur(12px);transition:all 0.3s}
.back-home:hover{color:#fff;background:var(--glass-hover)}
.back-lang{font-size:13px;font-weight:600;padding:8px 14px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:40px;color:var(--text-secondary);backdrop-filter:blur(12px);transition:all 0.3s;cursor:pointer}
.back-lang:hover{color:#fff;background:var(--glass-hover)}
.form-hint{font-size:12px;color:#ec4899;margin-top:-12px;margin-bottom:16px;min-height:0}
.invite-desc{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:22px}
.code-inputs{display:flex;gap:10px;justify-content:space-between}
.code-box{width:100%;min-width:0;height:56px;text-align:center;font-size:22px;font-weight:600;color:#fff;background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);border-radius:var(--radius-sm);transition:border-color 0.2s,background 0.2s,box-shadow 0.2s}
.code-box:focus{border-color:rgba(0,212,255,0.5);background:rgba(0,212,255,0.06);box-shadow:0 0 0 3px rgba(0,212,255,0.12);outline:none}
.code-box.filled{border-color:rgba(0,212,255,0.35)}
@media(max-width:900px){.auth-wrap{grid-template-columns:1fr}.auth-brand{display:none}.auth-form-side{padding:32px 20px}.back-bar{top:16px;right:16px}}
@media(max-width:480px){.auth-card{padding:32px 24px}}

/* Shake animation for login errors */
@keyframes shake{0%,100%{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-6px)}20%,40%,60%,80%{transform:translateX(6px)}}
.auth-card.shake{animation:shake 0.5s ease-in-out}