/* auth.css */
body.theme-dark{--bg:#0b0f14;--surface:#121a22;--panel:#182030;--border:#1e2d3d;--text:#e2e8f0;--muted:#64748b;--input-bg:#0f1923;--modal-bg:#121a22;--modal-border:#1e2d3d}
body.theme-light{--bg:#f4f6f9;--surface:#ffffff;--panel:#f0f2f5;--border:#dde1e8;--text:#1a202c;--muted:#718096;--input-bg:#ffffff;--modal-bg:#ffffff;--modal-border:#dde1e8}
body.theme-light .bubble.ai{color:var(--text)}body.theme-light .sidebar{background:var(--surface)}
.top-bar{position:absolute;top:12px;z-index:150;display:flex;align-items:center}
[dir="rtl"] .top-bar{left:16px}[dir="ltr"] .top-bar{right:16px}
.signup-topbtn{padding:7px 18px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;font-family:var(--font-ui);transition:all .18s}
.signup-topbtn:hover{background:#2563eb;transform:translateY(-1px)}
.user-topbtn{display:flex;align-items:center;gap:8px;padding:5px 12px 5px 8px;background:var(--surface);border:1px solid var(--border);border-radius:20px;cursor:pointer;color:var(--text);font-family:var(--font-ui);font-size:13px;transition:all .18s}
.user-topbtn:hover{border-color:var(--accent)}.top-avatar{width:26px;height:26px;border-radius:50%;object-fit:cover}.top-chevron{font-size:10px;color:var(--muted)}
.modal-veil{display:none;position:fixed;inset:0;z-index:8000;background:rgba(0,0,0,.65);backdrop-filter:blur(5px);align-items:center;justify-content:center;padding:16px}
.modal-veil.open{display:flex}
.modal-box{background:var(--modal-bg);border:1px solid var(--modal-border);border-radius:18px;width:100%;max-height:92vh;overflow-y:auto;animation:modalIn .22s ease;position:relative}
.modal-box::-webkit-scrollbar{width:4px}.modal-box::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
@keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.modal-title{font-size:17px;font-weight:700;color:var(--text);padding:18px 20px 0;margin:0}
.modal-close{position:absolute;top:14px;left:16px;background:var(--panel);border:1px solid var(--border);border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;color:var(--muted);transition:all .15s}
.modal-close:hover{color:var(--text);background:var(--border)}
.auth-box{max-width:420px;padding:0 0 20px}
.auth-tabs{display:flex;border-bottom:1px solid var(--border);padding:0 20px;margin-bottom:20px}
.auth-tab{flex:1;padding:14px 0;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--muted);font-size:14px;font-family:var(--font-ui);font-weight:600;cursor:pointer;transition:all .18s}
.auth-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
#form-login,#form-signup{padding:0 22px}
.auth-logo{font-size:18px;font-weight:700;color:var(--accent);text-align:center;margin-bottom:4px}
.auth-sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:18px}
.field-group{margin-bottom:14px}
.field-group label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;font-weight:500}
.req{color:var(--red)}
.field-group input,.field-group select{width:100%;background:var(--input-bg);border:1.5px solid var(--border);border-radius:9px;padding:10px 12px;color:var(--text);font-family:var(--font-ui);font-size:13.5px;outline:none;transition:border-color .18s;box-sizing:border-box}
.field-group input:focus{border-color:var(--accent)}
.field-hint{font-size:11px;color:var(--muted);margin-top:3px;display:block}
.fields-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:480px){.fields-row{grid-template-columns:1fr}}
.pass-wrap{position:relative}.pass-wrap input{padding-left:38px}
[dir="rtl"] .pass-wrap input{padding-left:12px;padding-right:38px}
.pass-eye{position:absolute;top:50%;transform:translateY(-50%);left:10px;background:transparent;border:none;cursor:pointer;font-size:16px;padding:0}
[dir="rtl"] .pass-eye{left:auto;right:10px}
.remember-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;cursor:pointer;user-select:none}
.auth-btn{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:10px;font-family:var(--font-ui);font-size:14px;font-weight:700;cursor:pointer;transition:all .18s;margin-top:4px}
.auth-btn:hover:not(:disabled){background:#2563eb}.auth-btn:disabled{background:var(--muted);cursor:not-allowed}
.google-btn{background:var(--surface);color:var(--text);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;gap:10px}
.google-btn:hover{background:var(--panel)}
.auth-or{text-align:center;position:relative;margin:14px 0;color:var(--muted);font-size:12px}
.auth-or::before,.auth-or::after{content:'';position:absolute;top:50%;width:40%;height:1px;background:var(--border)}
.auth-or::before{right:0}.auth-or::after{left:0}
.auth-switch{text-align:center;font-size:12.5px;color:var(--muted);margin-top:14px}
.auth-switch a{color:var(--accent);cursor:pointer;text-decoration:underline}
.setup-box{max-width:380px;padding:24px 20px 20px}
.setup-header{text-align:center;margin-bottom:20px}
.setup-logo{font-size:32px;color:var(--accent);margin-bottom:6px}
.setup-header h2{font-size:20px;color:var(--text);margin:0 0 4px}
.setup-header p{font-size:13px;color:var(--muted);margin:0}
.setup-step{display:none;text-align:center;animation:modalIn .2s ease}
.setup-step.active{display:block}.step-icon{font-size:36px;margin-bottom:10px}
.setup-step h3{font-size:16px;color:var(--text);margin:0 0 6px}.step-sub{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.setup-input{width:100%;background:var(--input-bg);border:1.5px solid var(--border);border-radius:9px;padding:10px 12px;color:var(--text);font-family:var(--font-ui);font-size:14px;outline:none;text-align:center;transition:border-color .18s;box-sizing:border-box;margin-bottom:14px}
.setup-input:focus{border-color:var(--accent)}
.grade-pills{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:16px}
.grade-pill{padding:8px 16px;border:1.5px solid var(--border);border-radius:20px;cursor:pointer;font-size:13px;color:var(--muted);transition:all .15s;user-select:none}
.grade-pill:hover,.grade-pill.selected{border-color:var(--accent);color:var(--accent)}
.grade-pill.selected{background:rgba(59,130,246,.1)}
.referral-options{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.referral-opt{padding:10px 16px;border:1.5px solid var(--border);border-radius:10px;cursor:pointer;font-size:13.5px;color:var(--muted);text-align:right;transition:all .15s;user-select:none}
[dir="ltr"] .referral-opt{text-align:left}
.referral-opt:hover{border-color:var(--accent);color:var(--accent)}
.referral-opt.selected{border-color:var(--green);background:rgba(16,185,129,.08);color:var(--green)}
.setup-next-btn{width:100%;padding:11px;background:var(--accent);color:#fff;border:none;border-radius:10px;font-family:var(--font-ui);font-size:14px;font-weight:700;cursor:pointer;transition:all .18s;margin-bottom:8px}
.setup-next-btn:hover{background:#2563eb}
.setup-back-btn{background:transparent;border:none;color:var(--muted);font-size:13px;cursor:pointer;font-family:var(--font-ui)}
.setup-back-btn:hover{color:var(--text)}
.setup-dots{display:flex;justify-content:center;gap:8px;margin-top:18px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--border);transition:all .25s}
.dot.active{background:var(--accent);width:20px;border-radius:4px}
.profile-dropdown{display:none;position:fixed;top:54px;z-index:5000;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:8px;min-width:200px;box-shadow:0 8px 24px rgba(0,0,0,.3);animation:modalIn .18s ease}
[dir="rtl"] .profile-dropdown{left:16px}[dir="ltr"] .profile-dropdown{right:16px}
.profile-dropdown.open{display:block}
.pd-header{display:flex;align-items:center;gap:10px;padding:8px;margin-bottom:4px}
.pd-avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;border:1.5px solid var(--border)}
.pd-name{font-size:13px;font-weight:700;color:var(--text)}.pd-username{font-size:11px;color:var(--muted)}
.pd-divider{height:1px;background:var(--border);margin:4px 0}
.pd-item{display:flex;align-items:center;gap:9px;width:100%;padding:9px 10px;background:transparent;border:none;border-radius:9px;color:var(--text);font-size:13px;font-family:var(--font-ui);cursor:pointer;transition:background .15s;text-align:right}
[dir="ltr"] .pd-item{text-align:left}.pd-item:hover{background:var(--panel)}.pd-logout{color:var(--red)!important}
.profile-box{max-width:460px;padding:0 0 24px}
.profile-avatar-section{display:flex;justify-content:center;padding:24px 0 12px}
.profile-avatar-wrap{position:relative}
.profile-big-avatar{width:80px;height:80px;border-radius:50%;object-fit:cover;border:3px solid var(--accent)}
.avatar-change-btn{position:absolute;bottom:0;right:-4px;width:24px;height:24px;background:var(--accent);border:2px solid var(--modal-bg);border-radius:50%;font-size:11px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all .15s}
.avatar-change-btn:hover{background:#2563eb}
.avatar-picker{padding:0 20px;text-align:center}.ap-title{font-size:13px;color:var(--muted);margin-bottom:12px}
.avatar-grid{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.av-opt{width:58px;height:58px;border-radius:50%;object-fit:cover;cursor:pointer;border:2.5px solid var(--border);transition:all .18s}
.av-opt:hover,.av-opt.selected{border-color:var(--accent);transform:scale(1.08)}
.profile-fields{padding:8px 20px}.pf-row{margin-bottom:18px}
.pf-row label{display:block;font-size:11.5px;color:var(--muted);margin-bottom:5px;font-weight:500}
.pf-val{font-size:14px;color:var(--text);padding:8px 12px;background:var(--panel);border-radius:8px}
.pf-val.locked{opacity:.7}.pf-row small{font-size:11px;color:var(--muted);margin-top:3px;display:block}
.pf-editable{display:flex;gap:8px;align-items:center}
.pf-editable input,.pf-editable select{flex:1;background:var(--input-bg);border:1.5px solid var(--border);border-radius:8px;padding:9px 11px;color:var(--text);font-family:var(--font-ui);font-size:13.5px;outline:none;transition:border-color .18s}
.pf-editable input:focus,.pf-editable select:focus{border-color:var(--accent)}
.pf-save-btn{padding:9px 16px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-family:var(--font-ui);font-size:12.5px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .18s}
.pf-save-btn:hover{background:#2563eb}
.pass-change-form{display:flex;flex-direction:column;gap:9px}
.pass-change-form input{background:var(--input-bg);border:1.5px solid var(--border);border-radius:8px;padding:9px 11px;color:var(--text);font-family:var(--font-ui);font-size:13px;outline:none;transition:border-color .18s}
.pass-change-form input:focus{border-color:var(--accent)}
.settings-box{max-width:380px;padding:0 0 24px}.settings-section{padding:16px 20px}
.settings-section h3{font-size:14px;color:var(--text);margin:0 0 12px}
.theme-options{display:flex;gap:12px}
.theme-opt{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px;border:2px solid var(--border);border-radius:12px;cursor:pointer;transition:all .18s;font-size:13px;color:var(--muted)}
.theme-opt:hover{border-color:var(--muted)}.theme-opt.active{border-color:var(--accent);color:var(--accent)}
.theme-preview{width:56px;height:36px;border-radius:6px;border:1px solid var(--border)}
.dark-prev{background:#0b0f14}.light-prev{background:#f4f6f9}