*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#f5f2ec;--surface:#fff;--surface2:#f7f4ef;
  --border:#e0dcd4;--ink:#0f0f0f;--ink2:#3a3a3a;--muted:#888;
  --accent:#c8401a;--accent-dim:rgba(200,64,26,.1);
  --green:#2a7a4b;--red:#c8401a;
  --radius:10px;--radius-sm:7px;
}
[data-theme="dark"]{
  --bg:#131210;--surface:#1e1c19;--surface2:#252320;
  --border:#2e2b27;--ink:#f0ede8;--ink2:#b0a898;--muted:#666;
}
html,body{height:100%;font-family:"DM Sans",system-ui,sans-serif;-webkit-font-smoothing:antialiased;}
body{display:flex;}

/* ── LEFT BRAND PANEL ── */
.brand-panel{
  width:480px;flex-shrink:0;
  background:var(--ink);
  display:flex;flex-direction:column;
  padding:40px 48px;
  position:relative;overflow:hidden;
  min-height:100vh;
}
.brand-panel::before{
  content:'';position:absolute;
  top:-80px;right:-60px;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(200,64,26,.18) 0%,transparent 65%);
  pointer-events:none;
}
.brand-grain{
  position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:repeat;
}
.brand-logo{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:800;letter-spacing:-.3px;
  color:#fff;text-decoration:none;margin-bottom:64px;
  position:relative;z-index:1;
}
.brand-logo img{width:26px;height:26px;border-radius:6px;}
.brand-h{
  font-family:"DM Serif Display",serif;
  font-size:clamp(32px,3vw,44px);line-height:1.08;
  letter-spacing:-.04em;color:#fff;
  margin-bottom:16px;position:relative;z-index:1;
}
.brand-h em{font-style:italic;color:var(--accent);}
.brand-sub{
  font-size:14px;color:rgba(255,255,255,.45);
  line-height:1.65;margin-bottom:40px;
  position:relative;z-index:1;
}
.brand-features{
  display:flex;flex-direction:column;gap:12px;
  position:relative;z-index:1;margin-bottom:40px;
}
.brand-feature{
  display:flex;align-items:center;gap:12px;
}
.brand-feature-icon{
  width:32px;height:32px;border-radius:8px;
  background:rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-feature-icon .material-icons-round{font-size:16px;color:rgba(255,255,255,.7);}
.brand-feature-text{font-size:13px;color:rgba(255,255,255,.55);}
.brand-stats{
  display:flex;gap:24px;margin-top:auto;
  padding-top:32px;border-top:1px solid rgba(255,255,255,.08);
  position:relative;z-index:1;
}
.brand-stat-n{font-size:20px;font-weight:800;color:#fff;margin-bottom:3px;}
.brand-stat-text{font-size:11px;color:rgba(255,255,255,.35);line-height:1.4;}

/* ── RIGHT FORM PANEL ── */
.form-panel{
  flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:40px 32px;background:var(--bg);
  min-height:100vh;overflow-y:auto;
  position:relative;
}
.form-panel-top{
  position:absolute;top:20px;right:20px;left:20px;
  display:flex;align-items:center;justify-content:space-between;
}
.back-link{
  font-size:13px;color:var(--muted);text-decoration:none;
  display:flex;align-items:center;gap:4px;transition:color .14s;
}
.back-link:hover{color:var(--ink2);}
.dark-toggle-btn{
  background:none;border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:6px 10px;
  cursor:pointer;font-size:14px;
  transition:background .14s;
}
.dark-toggle-btn:hover{background:var(--surface2);}

.form-box{
  width:100%;max-width:400px;
}
.form-box-title{
  font-family:"DM Serif Display",serif;
  font-size:28px;font-weight:400;letter-spacing:-.02em;
  color:var(--ink);margin-bottom:6px;
}
.form-box-sub{
  font-size:13px;color:var(--muted);margin-bottom:28px;
}
.form-box-sub a{color:var(--accent);text-decoration:none;font-weight:600;cursor:pointer;}
.form-box-sub a:hover{text-decoration:underline;}

/* Mode tabs */
.mode-tabs{
  display:flex;gap:3px;
  background:var(--surface2);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:3px;
  margin-bottom:28px;
}
.mode-tab{
  flex:1;font-family:inherit;font-size:13px;font-weight:600;
  background:none;border:none;padding:8px;border-radius:6px;
  cursor:pointer;color:var(--muted);transition:all .15s;
}
.mode-tab.active{
  background:var(--surface);color:var(--ink);
  box-shadow:0 1px 4px rgba(0,0,0,.08);
}

/* Progress dots (signup) */
.progress-dots{display:flex;gap:6px;margin-bottom:20px;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--border);transition:background .2s;}
.dot.active{background:var(--accent);}

/* Fields */
.field{margin-bottom:16px;position:relative;}
.field-label{
  display:block;font-size:11px;font-weight:700;
  color:var(--ink2);letter-spacing:.04em;text-transform:uppercase;
  margin-bottom:6px;
}
.field-input{
  width:100%;padding:11px 14px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  font-family:inherit;font-size:14px;background:var(--surface);color:var(--ink);
  transition:border-color .15s,box-shadow .15s;outline:none;
}
.field-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim);}
.field-hint{font-size:11px;color:var(--muted);margin-top:5px;}
.forgot-link{
  font-size:11px;color:var(--accent);cursor:pointer;
  position:absolute;right:0;top:0;font-weight:600;
}
.forgot-link:hover{text-decoration:underline;}

/* Password strength */
.pw-strength-bar{
  display:flex;gap:3px;margin-top:6px;
}
.pw-seg{height:3px;flex:1;border-radius:2px;background:var(--border);transition:background .2s;}
.pw-seg.weak{background:#e74c3c;}
.pw-seg.fair{background:#f39c12;}
.pw-seg.strong{background:var(--green);}

/* Buttons */
.btn-primary{
  width:100%;font-family:inherit;font-size:14px;font-weight:800;
  color:#fff;background:var(--accent);border:none;
  padding:13px;border-radius:var(--radius-sm);cursor:pointer;
  box-shadow:0 2px 0 #8f2e12;transition:opacity .15s;
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-bottom:14px;
}
.btn-primary:hover{opacity:.88;}
.btn-primary:disabled{opacity:.5;cursor:default;}
.btn-primary.loading .btn-text{opacity:.5;}
.spin{
  display:none;width:14px;height:14px;
  border:2px solid rgba(255,255,255,.3);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite;
}
.btn-primary.loading .spin{display:block;}
@keyframes spin{to{transform:rotate(360deg);}}

.divider{
  display:flex;align-items:center;gap:12px;
  font-size:11px;color:var(--muted);text-transform:uppercase;
  letter-spacing:.06em;margin:12px 0;
}
.divider::before,.divider::after{content:'';flex:1;height:1px;background:var(--border);}

.btn-guest{
  width:100%;font-family:inherit;font-size:13px;font-weight:600;
  color:var(--ink2);background:var(--surface);border:1px solid var(--border);
  padding:11px;border-radius:var(--radius-sm);cursor:pointer;
  transition:background .14s;
}
.btn-guest:hover{background:var(--surface2);}

.tos{font-size:11px;color:var(--muted);text-align:center;margin-top:16px;line-height:1.5;}
.tos a{color:var(--accent);text-decoration:none;}
.tos a:hover{text-decoration:underline;}

/* Alerts */
.alert{
  padding:10px 14px;border-radius:var(--radius-sm);
  font-size:13px;margin-bottom:14px;display:none;
}
.alert-error{background:rgba(200,64,26,.08);border:1px solid rgba(200,64,26,.25);color:var(--accent);}
.alert-success{background:rgba(42,122,75,.08);border:1px solid rgba(42,122,75,.25);color:var(--green);}
.alert-warning{background:rgba(184,134,11,.08);border:1px solid rgba(184,134,11,.25);color:#92400e;}

/* Verify / Reset / Forgot panels */
.verify-banner{
  background:rgba(42,122,75,.08);border:1px solid rgba(42,122,75,.2);
  border-radius:var(--radius-sm);padding:12px 14px;
  font-size:13px;color:var(--green);display:none;margin-bottom:14px;
}
.form-title{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:4px;}
.api-notice{
  background:rgba(184,134,11,.08);border:1px solid rgba(184,134,11,.2);
  border-radius:var(--radius-sm);padding:10px 14px;
  font-size:12px;color:#92400e;display:none;margin-bottom:16px;
}
.form-sub{font-size:13px;color:var(--muted);margin-bottom:20px;}
.form-sub a{color:var(--accent);cursor:pointer;font-weight:600;text-decoration:none;}

/* Debug toggle */
.debug-toggle{font-size:11px;color:var(--muted);text-align:center;margin-top:20px;cursor:pointer;}
.debug-panel{display:none;margin-top:12px;padding:12px;background:var(--surface2);border-radius:var(--radius-sm);font-size:11px;color:var(--muted);}

/* Responsive */
@media(max-width:800px){
  .brand-panel{display:none;}
  .form-panel{min-height:100vh;}
}