/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --bg:#F5F6F9;--bg-alt:#EDEFF4;--bg-card:#FFFFFF;
  --header-bg:#26262F;--header-text:#E8E8ED;
  --text:#14142A;--text-secondary:#5C6070;--text-muted:#9499A8;
  --border:#E4E6ED;--border-light:#EEF0F5;
  --green:#00B341;--green-dark:#00953A;--green-light:#E4F9EC;--green-glow:rgba(0,179,65,.18);
  --blue:#3B82F6;--purple:#8B5CF6;--orange:#F59E0B;--red:#EF4444;--pink:#EC4899;--cyan:#0891B2;
  --radius-xs:6px;--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:24px;
  --shadow-xs:0 1px 2px rgba(20,20,42,.04);
  --shadow-sm:0 1px 3px rgba(20,20,42,.05),0 1px 2px rgba(20,20,42,.03);
  --shadow:0 2px 8px rgba(20,20,42,.06);
  --shadow-md:0 6px 20px rgba(20,20,42,.08);
  --shadow-lg:0 12px 40px rgba(20,20,42,.12);
  --shadow-xl:0 24px 64px rgba(20,20,42,.16);
  --transition:.22s cubic-bezier(.4,0,.2,1);
  --header-height:64px;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;min-height:100vh}
a{text-decoration:none;color:inherit}
button{cursor:pointer;font-family:inherit;border:none;background:none}
input,select,textarea{font-family:inherit;border:none;outline:none;background:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1440px;margin:0 auto;padding:0 28px}

/* Header: site-header.css */
.btn{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 18px;font-size:14px;font-weight:600;border-radius:9px;transition:var(--transition);white-space:nowrap;gap:8px;border:none;cursor:pointer;font-family:inherit;text-decoration:none}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 2px 8px rgba(0,179,65,.25)}
.btn-primary:hover{background:var(--green-dark);box-shadow:0 6px 16px rgba(0,179,65,.35);transform:translateY(-1px)}
.btn-outline{border:1.5px solid var(--border);color:var(--text);background:var(--bg-card)}
.btn-outline:hover{border-color:var(--green);color:var(--green-dark)}
.btn-lg{height:50px;padding:0 30px;font-size:15px;border-radius:var(--radius)}
.btn-full{width:100%}
.btn-sm{height:32px;padding:0 12px;font-size:12px;border-radius:8px}

/* ===== AUTH LAYOUT ===== */
.auth-page{padding-top:calc(var(--header-height) + 32px);padding-bottom:48px;min-height:100vh;display:flex;align-items:flex-start;justify-content:center}
.auth-container{width:100%;max-width:1080px;margin:0 auto;padding:0 24px}
.auth-grid{display:grid;grid-template-columns:1fr 460px;gap:48px;align-items:start}

/* ===== AUTH LEFT (branding) ===== */
.auth-left{position:sticky;top:calc(var(--header-height) + 32px);padding:24px 0}
.auth-brand-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 10px;background:var(--green-light);border:1px solid #A7F3D0;color:var(--green-dark);font-size:13px;font-weight:600;border-radius:100px;margin-bottom:20px}
.auth-brand-badge .badge-dot{width:7px;height:7px;background:var(--green);border-radius:50%;box-shadow:0 0 0 4px rgba(0,179,65,.15)}
.auth-title{font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-1.2px;margin-bottom:16px}
.auth-title .hl{color:var(--green)}
.auth-subtitle{font-size:16px;color:var(--text-secondary);line-height:1.6;margin-bottom:32px;max-width:460px}
.auth-benefits{display:flex;flex-direction:column;gap:18px;margin-bottom:32px}
.auth-benefit{display:flex;gap:14px;align-items:flex-start}
.auth-benefit-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.auth-benefit-title{font-size:15px;font-weight:700;margin-bottom:2px}
.auth-benefit-text{font-size:13.5px;color:var(--text-secondary);line-height:1.5}
.auth-stats{display:flex;gap:32px;padding-top:24px;border-top:1px solid var(--border-light);flex-wrap:wrap}
.auth-stat-value{font-size:24px;font-weight:800;letter-spacing:-.6px}
.auth-stat-label{font-size:12.5px;color:var(--text-muted)}
.auth-trust{display:flex;gap:14px;flex-wrap:wrap;margin-top:20px}
.auth-trust-item{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text-muted)}
.auth-trust-item svg{color:var(--green);flex-shrink:0}

/* ===== AUTH CARD ===== */
.auth-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:32px;position:relative}
.auth-tabs{display:flex;background:var(--bg-alt);border-radius:var(--radius);padding:4px;margin-bottom:24px}
.auth-tab{flex:1;height:40px;font-size:14px;font-weight:600;color:var(--text-secondary);border-radius:9px;transition:var(--transition)}
.auth-tab.active{background:var(--bg-card);color:var(--text);box-shadow:var(--shadow-xs)}
.auth-tab:hover:not(.active){color:var(--text)}

/* role switcher */
.role-switch{margin-bottom:20px}
.role-switch-label{font-size:12.5px;font-weight:600;color:var(--text-muted);margin-bottom:8px;display:block}
.role-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.role-option{position:relative;cursor:pointer}
.role-option input{position:absolute;opacity:0;pointer-events:none}
.role-box{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius);transition:var(--transition);background:var(--bg-card)}
.role-box:hover{border-color:var(--text-muted)}
.role-option input:checked + .role-box{border-color:var(--green);background:var(--green-light);box-shadow:0 0 0 3px var(--green-glow)}
.role-icon{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--bg-alt);color:var(--text-secondary);transition:var(--transition)}
.role-option input:checked + .role-box .role-icon{background:var(--green);color:#fff}
.role-name{font-size:13.5px;font-weight:700;line-height:1.2}
.role-desc{font-size:11.5px;color:var(--text-muted);line-height:1.2}
.role-option input:checked + .role-box .role-desc{color:var(--green-dark)}

/* auth method switcher */
.method-switch{display:flex;gap:8px;margin-bottom:18px;background:var(--bg-alt);border-radius:10px;padding:4px}
.method-btn{flex:1;height:36px;font-size:13px;font-weight:600;color:var(--text-secondary);border-radius:7px;transition:var(--transition);display:flex;align-items:center;justify-content:center;gap:6px}
.method-btn.active{background:var(--bg-card);color:var(--green-dark);box-shadow:var(--shadow-xs)}
.method-btn svg{flex-shrink:0}

/* form */
.auth-form{display:flex;flex-direction:column;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:13px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:4px}
.form-label .required{color:var(--red)}
.form-input-wrap{position:relative;display:flex;align-items:center}
.form-input{width:100%;height:48px;padding:0 14px 0 44px;background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius);font-size:14.5px;color:var(--text);transition:var(--transition)}
.form-input::placeholder{color:var(--text-muted)}
.form-input:focus{background:#fff;border-color:var(--green);box-shadow:0 0 0 3px var(--green-glow)}
.form-input-icon{position:absolute;left:15px;color:var(--text-muted);pointer-events:none;transition:var(--transition)}
.form-input:focus ~ .form-input-icon{color:var(--green)}
.form-input.error{border-color:var(--red);background:#FEF2F2}
.form-input.error:focus{box-shadow:0 0 0 3px rgba(239,68,68,.12)}
.form-prefix{position:absolute;left:14px;font-size:14.5px;color:var(--text-secondary);pointer-events:none;font-weight:500}
.form-input.has-prefix{padding-left:48px}
.form-toggle-pass{position:absolute;right:10px;width:34px;height:34px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);border-radius:8px;transition:var(--transition)}
.form-toggle-pass:hover{background:var(--bg-alt);color:var(--text)}
.form-error{font-size:12px;color:var(--red);font-weight:500;display:none;align-items:center;gap:4px;margin-top:2px}
.form-error.show{display:flex}
.form-hint{font-size:11.5px;color:var(--text-muted);margin-top:2px}

/* password strength */
.password-strength{margin-top:4px}
.ps-bars{display:flex;gap:4px;margin-bottom:6px}
.ps-bar{flex:1;height:4px;background:var(--border);border-radius:2px;transition:background .25s ease}
.ps-bar.weak{background:var(--red)}
.ps-bar.medium{background:var(--orange)}
.ps-bar.strong{background:var(--green)}
.ps-label-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.ps-label{font-size:12px;font-weight:600;color:var(--text-muted)}
.ps-label.weak{color:var(--red)}
.ps-label.medium{color:var(--orange)}
.ps-label.strong{color:var(--green-dark)}
.ps-crack{font-size:11px;color:var(--text-muted)}
.ps-reqs{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px;margin-top:6px}
.ps-req{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--text-muted);transition:color .2s ease}
.ps-req svg{flex-shrink:0;color:var(--border);transition:color .2s ease}
.ps-req.met{color:var(--green-dark)}
.ps-req.met svg{color:var(--green)}

/* checkbox */
.form-checkbox{display:flex;align-items:flex-start;gap:9px;cursor:pointer;font-size:12.5px;color:var(--text-secondary);line-height:1.5}
.form-checkbox input{display:none}
.checkbox-box{width:18px;height:18px;border:1.5px solid var(--border);border-radius:5px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:var(--transition);background:var(--bg-card);margin-top:1px}
.checkbox-box svg{opacity:0;color:#fff;transition:var(--transition)}
.form-checkbox input:checked + .checkbox-box{background:var(--green);border-color:var(--green)}
.form-checkbox input:checked + .checkbox-box svg{opacity:1}
.form-checkbox a{color:var(--green-dark);font-weight:600}
.form-checkbox a:hover{text-decoration:underline}
.form-checkbox.error .checkbox-box{border-color:var(--red)}

/* form row */
.form-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.form-link{font-size:12.5px;font-weight:600;color:var(--green-dark);transition:var(--transition)}
.form-link:hover{color:var(--green)}

/* submit */
.auth-submit{height:50px;font-size:15px;border-radius:var(--radius);margin-top:4px}
.auth-submit:disabled{opacity:.6;cursor:not-allowed;transform:none!important}

/* divider */
.auth-divider{display:flex;align-items:center;gap:12px;margin:4px 0;color:var(--text-muted);font-size:12px}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border-light)}

/* social */
.social-auth{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.social-auth-btn{display:flex;align-items:center;justify-content:center;gap:8px;height:44px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:13px;font-weight:600;color:var(--text);transition:var(--transition);background:var(--bg-card)}
.social-auth-btn:hover{border-color:var(--text-muted);background:var(--bg)}
.social-auth-btn svg{flex-shrink:0}

/* footer switch */
.auth-switch{text-align:center;font-size:13.5px;color:var(--text-secondary);margin-top:20px}
.auth-switch a{color:var(--green-dark);font-weight:700;transition:var(--transition)}
.auth-switch a:hover{color:var(--green)}

/* hidden panels */
.auth-panel{display:none}
.auth-panel.active{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* form section title */
.form-section-title{font-size:15px;font-weight:700;margin-bottom:4px}
.form-section-sub{font-size:12.5px;color:var(--text-muted);margin-bottom:16px}

/* phone input */
.phone-input-wrap{position:relative;display:flex;align-items:center}
.phone-country{position:absolute;left:12px;display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--text);padding-right:10px;border-right:1px solid var(--border);z-index:2;cursor:pointer;background:transparent}
.phone-country select{font-size:14px;font-weight:600;color:var(--text);cursor:pointer;appearance:none;padding-right:2px}
.phone-input-wrap .form-input{padding-left:92px}

/* OTP */
.otp-wrap{display:flex;gap:8px;justify-content:space-between}
.otp-input{width:100%;height:52px;text-align:center;font-size:20px;font-weight:700;background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius);color:var(--text);transition:var(--transition)}
.otp-input:focus{background:#fff;border-color:var(--green);box-shadow:0 0 0 3px var(--green-glow)}
.otp-input.filled{border-color:var(--green);background:var(--green-light)}
.otp-resend{display:flex;align-items:center;justify-content:center;gap:6px;font-size:12.5px;color:var(--text-muted);margin-top:12px}
.otp-resend button{font-size:12.5px;font-weight:600;color:var(--green-dark);transition:var(--transition)}
.otp-resend button:disabled{color:var(--text-muted);cursor:not-allowed}
.otp-resend button:hover:not(:disabled){color:var(--green)}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);background:var(--header-bg);color:#fff;padding:12px 20px;border-radius:var(--radius);font-size:13.5px;font-weight:500;box-shadow:var(--shadow-xl);opacity:0;pointer-events:none;transition:var(--transition);z-index:300;display:flex;align-items:center;gap:10px;max-width:90vw}
.toast.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.toast svg{color:var(--green);flex-shrink:0}
.toast.error svg{color:var(--red)}

/* ===== FOOTER ===== */
.footer{border-top:1px solid var(--border-light);padding:28px 0 24px;margin-top:32px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-copyright{font-size:12.5px;color:var(--text-muted)}
.footer-legal{display:flex;gap:18px}
.footer-legal a{font-size:12.5px;color:var(--text-muted);transition:var(--transition)}
.footer-legal a:hover{color:var(--text)}

/* ===== MOBILE MENU ===== */
.mobile-menu{position:fixed;top:0;right:-340px;width:340px;height:100vh;background:var(--bg-card);z-index:200;padding:24px;display:flex;flex-direction:column;gap:20px;transition:right .32s cubic-bezier(.4,0,.2,1);box-shadow:-8px 0 40px rgba(20,20,42,.15);overflow-y:auto}
.mobile-menu.open{right:0}
.mobile-menu-overlay{position:fixed;inset:0;background:rgba(20,20,42,.5);backdrop-filter:blur(2px);z-index:199;opacity:0;pointer-events:none;transition:opacity .3s}
.mobile-menu-overlay.open{opacity:1;pointer-events:auto}
.mobile-menu-header{display:flex;align-items:center;justify-content:space-between}
.mobile-menu-header .logo-text{color:var(--text)}
.mobile-menu-close{font-size:28px;color:var(--text-muted);width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:var(--transition)}
.mobile-menu-close:hover{background:var(--bg);color:var(--text)}
.mobile-menu-nav{display:flex;flex-direction:column;gap:2px;flex:1}
.mobile-menu-link{padding:11px 14px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-sm);transition:var(--transition);display:flex;align-items:center;gap:12px}
.mobile-menu-link:hover{background:var(--bg);color:var(--text)}
.mobile-menu-link svg{color:var(--text-muted)}
.mobile-menu-divider{height:1px;background:var(--border-light);margin:8px 0}
.mobile-menu-actions{display:flex;flex-direction:column;gap:10px}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .auth-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .auth-left{display:none}
}
@media(max-width:900px){
  .header-nav{display:none}
  .menu-toggle{display:flex}
  .header-actions .btn-register{display:none}
  .auth-page{padding-top:calc(var(--header-height) + 24px)}
}
@media(max-width:640px){
  .container{padding:0 16px}
  .auth-container{padding:0 16px}
  .auth-card{padding:24px 20px;border-radius:var(--radius-lg)}
  .auth-title{font-size:28px}
  .role-options{grid-template-columns:1fr 1fr}
  .role-box{padding:10px 12px;gap:8px}
  .role-icon{width:28px;height:28px}
  .role-name{font-size:12.5px}
  .role-desc{display:none}
  .social-auth{grid-template-columns:1fr}
  .ps-reqs{grid-template-columns:1fr}
  .form-row{flex-direction:column;align-items:flex-start}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .mobile-menu{width:300px}
}
@media(max-width:420px){
  .auth-card{padding:20px 16px}
  .auth-tabs{margin-bottom:18px}
  .method-switch{gap:4px}
  .method-btn{font-size:12px;padding:0 6px}
}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}