:root{
  --bg:#f7f8fb;--surface:#ffffff;--surface2:#f1f4f8;--surface3:#e8edf4;
  --border:#1e1e2e;--border2:#2a2a3e;
  --accent:#111827;--accent-dim:rgba(226,125,136,.14);--accent-light:#2f3a4a;
  --green:#78a7c7;--red:#e27d88;
  --text:#1b2430;--text-muted:#687385;--text-dim:#9aa5b5;
  --font-display:'Space Mono',monospace;
  --font-body:'IBM Plex Sans Arabic',sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:14px;overflow:hidden;}

/* grid noise bg */
body::before{
  content:'';position:fixed;inset:0;
  background-image:
    linear-gradient(var(--border) 1px,transparent 1px),
    linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.4;pointer-events:none;z-index:0;
}
body::after{
  content:'';position:fixed;inset:0;
  background:radial-gradient(ellipse 60% 70% at 30% 50%,rgba(17,24,39,.07) 0%,transparent 70%);
  pointer-events:none;z-index:0;
}

/* ─── SPLIT LAYOUT ─── */
.layout{display:grid;grid-template-columns:1fr 480px;height:100vh;position:relative;z-index:1;}

/* ─── LEFT PANEL ─── */
.left-panel{display:flex;flex-direction:column;justify-content:space-between;padding:36px 48px;border-left:1px solid var(--border);overflow:hidden;position:relative;}
.left-panel::after{
  content:'GLITCHZONE';
  position:absolute;bottom:-20px;right:-30px;
  font-family:var(--font-display);font-size:110px;font-weight:700;
  color:rgba(17,24,39,.04);line-height:1;pointer-events:none;
  white-space:nowrap;
}

.brand-logo{font-family:var(--font-display);font-size:20px;letter-spacing:4px;color:var(--text);}
.brand-logo em{color:var(--accent);font-style:normal;}

.left-middle{flex:1;display:flex;flex-direction:column;justify-content:center;padding:40px 0;}
.left-tag{font-size:10px;color:var(--accent);letter-spacing:3px;margin-bottom:16px;}
.left-headline{font-family:var(--font-display);font-size:34px;font-weight:700;line-height:1.15;color:var(--text);margin-bottom:20px;}
.left-headline em{color:var(--accent);font-style:normal;}
.left-sub{font-size:14px;color:var(--text-muted);line-height:1.8;max-width:360px;}

.features{display:flex;flex-direction:column;gap:14px;margin-top:36px;}
.feature{display:flex;align-items:center;gap:12px;}
.feat-icon{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.feat-icon.purple{background:var(--accent-dim);border:1px solid rgba(17,24,39,.2);}
.feat-icon.green{background:rgba(120,167,199,.1);border:1px solid rgba(120,167,199,.2);}
.feat-icon.orange{background:rgba(224,90,43,.1);border:1px solid rgba(224,90,43,.2);}
.feat-text{font-size:13px;color:var(--text-muted);}
.feat-text strong{color:var(--text);display:block;font-size:13px;margin-bottom:1px;}

.left-footer{font-size:11px;color:var(--text-dim);}

/* ─── RIGHT PANEL (FORM) ─── */
.right-panel{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;}

/* tabs */
.auth-tabs{display:flex;border-bottom:1px solid var(--border);flex-shrink:0;}
.auth-tab{flex:1;padding:18px;text-align:center;font-family:var(--font-display);font-size:10px;letter-spacing:2px;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s;}
.auth-tab:hover{color:var(--text);}
.auth-tab.active{color:var(--accent-light);border-bottom-color:var(--accent);}

/* form panels */
.form-panel{padding:36px 40px;display:none;flex-direction:column;flex:1;}
.form-panel.active{display:flex;}

.form-title{font-family:var(--font-display);font-size:16px;letter-spacing:1px;color:var(--text);margin-bottom:6px;}
.form-sub{font-size:13px;color:var(--text-muted);margin-bottom:28px;line-height:1.6;}

/* inputs */
.field{margin-bottom:16px;}
.field-label{font-size:11px;color:var(--text-muted);letter-spacing:1px;margin-bottom:7px;display:flex;justify-content:space-between;}
.field-label a{color:var(--accent);text-decoration:none;font-size:11px;}
.field-label a:hover{text-decoration:underline;}

.input-wrap{position:relative;}
.field-input{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:12px 16px;color:var(--text);font-family:var(--font-body);font-size:13px;outline:none;transition:border-color .2s,background .2s;}
.field-input:focus{border-color:var(--accent);background:var(--surface3);}
.field-input::placeholder{color:var(--text-dim);}
.field-input.error{border-color:var(--red);}
.field-input.success{border-color:var(--green);}
.input-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-dim);pointer-events:none;}
.input-suffix{position:absolute;left:14px;top:50%;transform:translateY(-50%);cursor:pointer;color:var(--text-dim);transition:color .2s;}
.input-suffix:hover{color:var(--text);}

.field-error{font-size:11px;color:var(--red);margin-top:5px;display:none;}
.field-error.show{display:block;}
.field-hint{font-size:11px;color:var(--text-dim);margin-top:5px;}

/* password strength */
.strength-bar{display:flex;gap:4px;margin-top:8px;}
.strength-seg{flex:1;height:3px;background:var(--border2);border-radius:2px;transition:background .3s;}
.strength-seg.weak{background:var(--red);}
.strength-seg.mid{background:var(--accent);}
.strength-seg.strong{background:var(--green);}
.strength-label{font-size:10px;color:var(--text-dim);margin-top:4px;}

/* phone prefix */
.phone-wrap{display:flex;gap:0; flex-direction: row-reverse;}
.phone-prefix{background:var(--surface3);border:1px solid var(--border);border-left:none;border-radius:8px 0 0 8px;padding:12px 14px;font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px;white-space:nowrap;font-family:var(--font-display);}
.phone-input{border-radius:0 8px 8px 0!important;border-right:none!important;}

/* grid */
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}

/* checkboxes */
.check-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px;}
.check-box{width:16px;height:16px;border:1.5px solid var(--border2);border-radius:4px;flex-shrink:0;margin-top:1px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;background:var(--surface2);}
.check-box.checked{background:var(--accent);border-color:var(--accent);}
.check-box.checked::after{content:'';width:8px;height:5px;border-left:1.5px solid #fff;border-bottom:1.5px solid #fff;transform:rotate(-45deg) translateY(-1px);display:block;}
.check-label{font-size:12px;color:var(--text-muted);line-height:1.5;cursor:pointer;}
.check-label a{color:var(--accent);}

/* submit */
.submit-btn{width:100%;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:14px;font-family:var(--font-body);font-size:14px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .2s,transform .1s;margin-bottom:20px;}
.submit-btn:hover{background:#2f3a4a;}
.submit-btn:active{transform:scale(.98);}
.submit-btn.loading{background:#534AB7;cursor:not-allowed;}
.submit-btn.success-state{background:var(--green);}

/* divider */
.or-divider{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.or-line{flex:1;height:1px;background:var(--border);}
.or-text{font-size:11px;color:var(--text-dim);}

/* social btns */
.social-btns{display:flex;gap:10px;margin-bottom:24px;}
.social-btn{flex:1;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:11px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;color:var(--text-muted);cursor:pointer;transition:all .2s;}
.social-btn:hover{border-color:var(--border2);color:var(--text);}

/* switch text */
.switch-txt{text-align:center;font-size:12px;color:var(--text-muted);}
.switch-txt a{color:var(--accent);cursor:pointer;text-decoration:none;}
.switch-txt a:hover{text-decoration:underline;}

/* OTP panel */
.otp-grid{display:flex;gap:10px;justify-content:center;margin:24px 0;}
.otp-input{width:52px;height:58px;background:var(--surface2);border:1px solid var(--border);border-radius:8px;text-align:center;font-family:var(--font-display);font-size:22px;color:var(--text);outline:none;transition:border-color .2s;}
.otp-input:focus{border-color:var(--accent);background:var(--surface3);}
.otp-resend{text-align:center;font-size:12px;color:var(--text-muted);margin-bottom:20px;}
.otp-resend button{background:none;border:none;color:var(--accent);cursor:pointer;font-size:12px;font-family:var(--font-body);}
.otp-timer{color:var(--text-dim);}

/* success state */
.success-screen{display:none;flex-direction:column;align-items:center;justify-content:center;flex:1;text-align:center;padding:40px;}
.success-screen.show{display:flex;}
.success-circle{width:72px;height:72px;border-radius:50%;background:rgba(120,167,199,.12);border:2px solid var(--green);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;animation:popIn .5s cubic-bezier(.68,-.55,.265,1.55);}
@keyframes popIn{from{transform:scale(0)}to{transform:scale(1)}}
.success-title{font-family:var(--font-display);font-size:18px;color:var(--text);letter-spacing:1px;margin-bottom:8px;}
.success-sub{font-size:13px;color:var(--text-muted);line-height:1.7;margin-bottom:24px;}

/* toast */
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(60px);background:var(--surface2);border:1px solid var(--accent);color:var(--text);border-radius:8px;padding:10px 18px;font-size:12px;display:flex;align-items:center;gap:8px;z-index:9000;transition:transform .3s ease;}
.toast.show{transform:translateX(-50%) translateY(0);}

@media(max-width:800px){
  .layout{grid-template-columns:1fr;}
  .left-panel{display:none;}
  .right-panel{height:100vh;}
}