*{margin:0;padding:0;box-sizing:border-box}
:root{
--bg:#0b0d13;--bg2:#12141e;--bg3:#1a1d2b;--bg4:#242739;
--text:#e4e6ef;--text2:#8b8ea6;--text3:#5c5f78;
--accent:#7b6aef;--accent-hover:#8d7ff5;--accent-muted:rgba(123,106,239,0.12);
--success:#34d399;--success-muted:rgba(52,211,153,0.12);
--danger:#f87171;--danger-muted:rgba(248,113,113,0.1);
--border:rgba(255,255,255,0.06);--border-hover:rgba(255,255,255,0.1);
--r-sm:6px;--r-md:10px;--r-lg:16px;--r-xl:20px;
--shadow-sm:0 1px 3px rgba(0,0,0,0.25);--shadow-md:0 8px 32px rgba(0,0,0,0.45);
--ease:cubic-bezier(0.4,0,0.2,1);
--font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif
}
html{font-size:14px;line-height:1.5}
body{font-family:var(--font);background:var(--bg);color:var(--text);height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#fff}

.screen{display:none;height:100vh}
.screen.active{display:flex}

/* ====== Buttons & inputs ====== */
.input-group{margin-bottom:20px}
.input-group label{display:block;font-size:11px;color:var(--text3);margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;font-weight:500}
.input-group input,.input-group select{width:100%;padding:12px 16px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text);font-size:14px;font-family:var(--font);outline:none;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.input-group input:focus,.input-group select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-muted)}
.input-group input::placeholder{color:var(--text3)}
.btn-primary{width:100%;padding:12px 20px;background:var(--accent);border:none;border-radius:var(--r-md);color:#fff;font-size:14px;font-weight:600;font-family:var(--font);cursor:pointer;transition:background .15s var(--ease),transform .1s var(--ease),box-shadow .15s var(--ease)}
.btn-primary:hover{background:var(--accent-hover);box-shadow:0 4px 16px rgba(123,106,239,0.3)}
.btn-primary:active{transform:scale(0.98)}
.btn-primary:disabled{opacity:0.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-secondary{padding:8px 16px;background:transparent;border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text2);font-size:13px;font-family:var(--font);cursor:pointer;transition:all .15s var(--ease)}
.btn-secondary:hover{border-color:var(--border-hover);color:var(--text);background:var(--bg3)}
.btn-secondary.sm{padding:6px 12px;font-size:12px}
.btn-back{padding:6px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text2);cursor:pointer;font-size:13px;font-family:var(--font);transition:all .15s var(--ease)}
.btn-back:hover{border-color:var(--border-hover);color:var(--text);background:var(--bg4)}

/* ====== AUTH SCREEN — split layout ====== */
#auth-screen{align-items:center;justify-content:center;padding:24px;background:var(--bg);overflow-y:auto}
.auth-container{width:100%;max-width:880px}
.auth-header{text-align:center;margin-bottom:28px}
.auth-logo{margin:0 auto 12px;width:48px;height:48px;font-size:24px;display:flex;align-items:center;justify-content:center;background:var(--accent-muted);border-radius:var(--r-md);color:var(--accent)}
.auth-header h1{font-size:28px;font-weight:600;letter-spacing:-0.5px;color:var(--text)}
.auth-subtitle{color:var(--text3);font-size:13px;margin-top:4px}
.auth-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:720px){.auth-split{grid-template-columns:1fr}}
.auth-panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:28px 24px;display:flex;flex-direction:column;gap:16px}
.auth-panel-register{background:linear-gradient(135deg,rgba(123,106,239,0.06),rgba(141,127,245,0.02));border-color:rgba(123,106,239,0.2)}
.auth-panel-title{font-size:20px;font-weight:600;letter-spacing:-0.2px}
.auth-panel-desc{font-size:13px;color:var(--text3);margin-top:-8px}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-error{color:var(--danger);font-size:13px;min-height:18px}

/* Register form fields */
.reg-field{display:flex;flex-direction:column;gap:6px}
.reg-field label{font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:1px;font-weight:500}
.reg-input{padding:11px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text);font-size:14px;font-family:var(--font);outline:none;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.reg-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-muted)}
.reg-input::placeholder{color:var(--text3)}

/* Captcha row */
.captcha-row{display:flex;gap:8px;align-items:center}
.captcha-row canvas{border-radius:var(--r-sm);border:1px solid var(--border);background:var(--bg);flex-shrink:0;max-width:100%;height:auto}

/* Domains picker */
.domains-list{display:flex;flex-wrap:wrap;gap:8px}
.domain-chip{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer;transition:all .15s var(--ease);font-size:13px}
.domain-chip:hover{border-color:var(--border-hover)}
.domain-chip.active{background:var(--accent-muted);border-color:var(--accent);color:var(--accent)}
.dc-name{font-weight:600}
.dc-count{font-size:11px;color:var(--text3)}
.domain-chip.active .dc-count{color:var(--accent)}
.custom-domain-block{margin-top:8px;font-size:12px;color:var(--text3)}
.custom-domain-block summary{cursor:pointer;padding:4px 0}
.custom-domain-block[open] summary{margin-bottom:8px}

/* Email preview */
.email-preview{padding:10px 14px;background:var(--bg);border:1px dashed var(--border);border-radius:var(--r-sm);font-family:monospace;font-size:14px;color:var(--text3);text-align:center;transition:all .15s var(--ease)}
.email-preview.valid{color:var(--accent);border-color:var(--accent);border-style:solid;background:var(--accent-muted)}

/* ====== Sidebar ====== */
.main-screen{flex-direction:row}
.sidebar{width:252px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}
.sidebar-header{display:flex;align-items:center;gap:10px;padding:20px 20px 16px;font-size:16px;font-weight:600;letter-spacing:-0.3px}
.logo-sm{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--accent-muted);border-radius:var(--r-sm);font-size:16px;color:var(--accent)}
.logo-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--accent-muted);border-radius:var(--r-md);font-size:22px;color:var(--accent)}
.sidebar-nav{flex:1;padding:4px 8px;display:flex;flex-direction:column;gap:2px}
.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--r-sm);color:var(--text2);cursor:pointer;font-size:14px;font-weight:450;transition:all .15s var(--ease)}
.nav-link:hover{background:var(--bg3);color:var(--text)}
.nav-link.active{background:var(--accent-muted);color:var(--accent)}
.nav-icon{width:20px;text-align:center;font-size:15px;opacity:0.7;flex-shrink:0}
.nav-link.active .nav-icon{opacity:1}
.badge{margin-left:auto;background:var(--accent);color:#fff;font-size:11px;padding:2px 8px;border-radius:20px;font-weight:600;min-width:22px;text-align:center;line-height:1.4}

/* ====== Account manager ====== */
.acct-mgr{border-top:1px solid var(--border);padding:8px}
.acct-current{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--r-sm);cursor:pointer;transition:background .15s var(--ease)}
.acct-current:hover{background:var(--bg3)}
.acct-current.open{background:var(--accent-muted);border-radius:var(--r-sm) var(--r-sm) 0 0}
.acct-av{width:32px;height:32px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:#fff;flex-shrink:0}
.acct-info{flex:1;min-width:0}
.acct-email{font-size:12px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}
.acct-sub{font-size:11px;color:var(--text3);margin-top:1px}
.acct-arrow{color:var(--text3);font-size:10px;transition:transform .2s var(--ease)}
.acct-current.open .acct-arrow{transform:rotate(180deg)}
.acct-list{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.acct-list.open{max-height:200px;overflow-y:auto}
.acct-item{display:flex;align-items:center;gap:8px;padding:8px 10px;cursor:pointer;transition:background .15s var(--ease);border-bottom:1px solid var(--border)}
.acct-item:last-child{border-bottom:none}
.acct-item:hover{background:var(--bg3)}
.acct-item.active{background:var(--accent-muted)}
.acct-item .ai-av{width:26px;height:26px;border-radius:50%;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:600;color:var(--accent);flex-shrink:0}
.acct-item.active .ai-av{background:var(--accent);color:#fff}
.acct-item .ai-email{flex:1;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text2)}
.acct-item.active .ai-email{color:var(--text)}
.acct-item .ai-x{color:var(--text3);font-size:14px;padding:2px 6px;border-radius:4px;opacity:0;transition:opacity .15s var(--ease)}
.acct-item:hover .ai-x{opacity:1}
.acct-item .ai-x:hover{color:var(--danger);background:var(--danger-muted)}
.acct-actions{display:flex;gap:4px;padding:8px 4px 4px;border-top:1px solid var(--border);margin-top:2px}
.acct-add,.acct-logout{flex:1;text-align:center;padding:8px;border-radius:var(--r-sm);font-size:11px;font-weight:500;cursor:pointer;transition:background .15s var(--ease)}
.acct-add{color:var(--accent)}.acct-add:hover{background:var(--accent-muted)}
.acct-logout{color:var(--danger)}.acct-logout:hover{background:var(--danger-muted)}

/* ====== Content area ====== */
.content{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.content-header{padding:20px 28px 16px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border);flex-shrink:0}
.content-header h2{font-size:20px;font-weight:600;letter-spacing:-0.3px}
.msg-count{font-size:12px;color:var(--text3);font-weight:400}
.tab{display:none;flex:1;flex-direction:column;overflow:hidden}
.tab.active{display:flex}

/* ====== Message list ====== */
.message-list{flex:1;overflow-y:auto}
.msg-item{display:flex;gap:14px;padding:16px 28px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s var(--ease);animation:fadeSlideIn .2s var(--ease)}
.msg-item:hover{background:var(--bg2)}
.msg-item:active{background:var(--bg3)}
.msg-avatar{width:36px;height:36px;border-radius:50%;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:var(--accent);flex-shrink:0;transition:background .15s var(--ease)}
.msg-item:hover .msg-avatar{background:var(--accent-muted)}
.msg-body{flex:1;min-width:0}
.msg-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.msg-from{font-size:13px;font-weight:600;color:var(--text)}
.msg-time{font-size:11px;color:var(--text3);flex-shrink:0;margin-left:12px}
.msg-subject{font-size:14px;color:var(--text);margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msg-preview{font-size:12px;color:var(--text3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.4}
.empty-inbox{padding:80px 40px;text-align:center}
.empty-inbox::before{content:"\2709";display:block;font-size:48px;margin-bottom:16px;opacity:0.2;color:var(--text3)}
.empty-inbox{color:var(--text3);font-size:14px}

/* ====== Message detail ====== */
.message-detail{flex:1;overflow-y:auto;padding:32px 28px}
.msg-detail-subject{font-size:24px;font-weight:600;letter-spacing:-0.5px;margin-bottom:20px;line-height:1.3}
.msg-detail-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text2);margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.msg-detail-meta span{background:var(--bg3);padding:6px 12px;border-radius:var(--r-sm)}
.msg-detail-meta b{color:var(--text);font-weight:500}
.msg-detail-body{font-size:14px;line-height:1.7;color:var(--text);white-space:pre-wrap;word-break:break-word}
.code-highlight{display:inline-block;background:var(--accent-muted);color:var(--accent);padding:12px 28px;border-radius:var(--r-md);font-size:32px;font-weight:700;letter-spacing:8px;margin:16px 0;border:1px solid rgba(123,106,239,0.2)}

/* ====== Plan tab ====== */
.plan-body{flex:1;overflow-y:auto;padding:24px 28px;display:flex;flex-direction:column;gap:20px}
.current-plan-card{background:linear-gradient(135deg,rgba(123,106,239,0.1),rgba(141,127,245,0.04));border:1px solid rgba(123,106,239,0.3);border-radius:var(--r-lg);padding:24px}
.cp-label{font-size:11px;text-transform:uppercase;letter-spacing:1.2px;color:var(--text3)}
.cp-tier{font-size:32px;font-weight:700;letter-spacing:-0.5px;color:var(--accent);margin:4px 0 8px}
.cp-quota{font-size:22px;font-weight:600}
.cp-quota small{font-size:13px;color:var(--text3);font-weight:400;margin-left:4px}
.cp-status{font-size:13px;color:var(--text2);margin-top:4px}
.upgrade-title{font-size:16px;font-weight:600;margin-top:8px}

/* Plans grid (used in tab-plan now) */
.plans-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:720px){.plans-grid{grid-template-columns:1fr}}
.plan-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-md);padding:20px 16px;display:flex;flex-direction:column;gap:12px;transition:all .15s var(--ease)}
.plan-card:hover{border-color:var(--border-hover)}
.plan-card.current{border-color:var(--accent);background:linear-gradient(135deg,rgba(123,106,239,0.08),rgba(141,127,245,0.02));box-shadow:0 0 0 3px var(--accent-muted)}
.plan-tier{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1.2px;color:var(--accent)}
.plan-quota{font-size:20px;font-weight:700;letter-spacing:-0.2px;color:var(--text)}
.plan-quota small{font-size:12px;color:var(--text3);font-weight:400;margin-left:2px}
.plan-periods{display:flex;gap:4px;flex-wrap:wrap}
.plan-chip{padding:8px 10px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-sm);font-size:11px;color:var(--text2);cursor:pointer;transition:all .15s var(--ease);font-family:var(--font);display:flex;flex-direction:column;gap:2px;align-items:center;min-width:72px;line-height:1.2;text-align:center;flex:1}
.plan-chip:hover{border-color:var(--border-hover);color:var(--text)}
.plan-chip.active{background:var(--accent);border-color:var(--accent);color:#fff}
.plan-chip strong{font-size:13px;font-weight:600}
.plan-buy-btn{margin-top:4px;padding:10px 16px;font-size:13px}

/* ====== SMS ====== */
.sms-body{flex:1;overflow-y:auto;padding:32px 28px}
.sms-order-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:32px;max-width:480px;margin-bottom:20px}
.sms-hero{margin-bottom:24px}
.sms-hero-title{font-size:20px;font-weight:600;letter-spacing:-0.3px;margin-bottom:4px}
.sms-desc{font-size:13px;color:var(--text3);line-height:1.5}
.sms-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.sms-row label{font-size:13px;color:var(--text2);width:72px;flex-shrink:0;font-weight:500}
.sms-row select{flex:1;padding:10px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text);font-size:14px;outline:none;font-family:var(--font);transition:border-color .15s var(--ease),box-shadow .15s var(--ease);-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235c5f78' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.sms-row select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-muted)}
.sms-buy-btn{width:100%;padding:14px;background:var(--accent);border:none;border-radius:var(--r-md);color:#fff;font-size:15px;font-weight:600;cursor:pointer;font-family:var(--font);transition:all .15s var(--ease);margin-top:8px}
.sms-buy-btn:hover{background:var(--accent-hover);box-shadow:0 4px 20px rgba(123,106,239,0.35)}
.sms-buy-btn:active{transform:scale(0.98)}
.sms-buy-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none;box-shadow:none}
.sms-active{background:var(--bg2);border:1px solid rgba(52,211,153,0.25);border-radius:var(--r-lg);padding:32px;max-width:480px;margin-bottom:20px}
.sms-active-header{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.sms-active-dot{width:8px;height:8px;border-radius:50%;background:var(--success);animation:pulse-dot 2s var(--ease) infinite}
.sms-active-label{font-size:13px;font-weight:500;color:var(--success);text-transform:uppercase;letter-spacing:0.5px}
.sms-number-card{text-align:center;padding:24px 0;margin-bottom:16px}
.sms-number{font-size:32px;font-weight:700;letter-spacing:3px;color:var(--text)}
.sms-status{font-size:13px;color:var(--text3);margin-top:8px}
.sms-code{font-size:40px;font-weight:700;color:var(--accent);letter-spacing:10px;text-align:center;padding:20px;background:var(--accent-muted);border-radius:var(--r-md);margin-bottom:16px;border:1px solid rgba(123,106,239,0.2)}
.sms-actions{display:flex;gap:8px}

/* ====== Loading & animations ====== */
.loading{padding:60px 40px;text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center;color:transparent;font-size:0;user-select:none}
.loading::before{content:"";display:block;width:200px;height:8px;background:var(--bg3);border-radius:4px;animation:skeleton 1.5s var(--ease) infinite}
.loading::after{content:"";display:block;width:160px;height:8px;background:var(--bg3);border-radius:4px;animation:skeleton 1.5s var(--ease) infinite;animation-delay:0.15s}
.empty{padding:40px 20px;text-align:center;color:var(--text3);font-size:13px}

@keyframes skeleton{0%,100%{opacity:0.4}50%{opacity:1}}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
@keyframes fadeSlideIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* ====== Scrollbar ====== */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bg4);border-radius:2px}
::-webkit-scrollbar-thumb:hover{background:var(--text3)}

input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
input[type=number]{-moz-appearance:textfield}