/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:#f5f7fa;color:#1a1a2e;min-height:100vh;font-size:14px}
a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}

/* ===== Layout ===== */
.app-layout{display:flex;min-height:100vh}

/* ===== Sidebar ===== */
.sidebar{width:200px;min-width:200px;background:#fff;border-right:1px solid #e8ecf0;display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:100;transition:width .2s}
.sidebar{width:200px;min-width:200px;background:#fff;border-right:1px solid #e8ecf0;display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:100;transition:width .2s;overflow:hidden}
.sidebar-logo{padding:0 14px;border-bottom:1px solid rgba(255,255,255,0.08);display:flex;align-items:center;gap:10px;height:64px;background:linear-gradient(145deg,#04071a 0%,#0c1a52 100%);flex-shrink:0}
.sidebar-logo-icon{width:34px;height:34px;min-width:34px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 3px 12px rgba(59,130,246,0.5),0 0 0 1px rgba(255,255,255,0.1)}
.sidebar-logo h1{font-size:16px;font-weight:700;letter-spacing:-0.3px;line-height:1.1;color:#fff}
.sidebar-logo h1 .logo-sms{color:#60a5fa}
.sidebar-logo h1 .logo-dot{display:inline-block;width:5px;height:5px;background:#4ade80;border-radius:50%;margin-left:1px;vertical-align:middle;box-shadow:0 0 6px #4ade80;animation:dotpulse 2s ease-in-out infinite}
@keyframes dotpulse{0%,100%{box-shadow:0 0 4px #4ade80}50%{box-shadow:0 0 10px #4ade80,0 0 20px #4ade80}}
.sidebar-section{padding:16px 12px 4px;font-size:11px;font-weight:600;color:#8c8c8c;text-transform:uppercase;letter-spacing:.8px}
.sidebar-nav{flex:1;padding:8px 8px;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:6px;font-size:13px;color:#595959;cursor:pointer;transition:all .15s;margin-bottom:1px;border:none;background:none;width:100%;text-align:left;font-weight:400}
.nav-item:hover{background:#f0f5ff;color:#1677ff}
.nav-item.active{background:#e6f4ff;color:#1677ff;font-weight:500}
.nav-item.active .nav-icon{color:#1677ff}
.nav-icon{width:16px;height:16px;flex-shrink:0;color:#8c8c8c}
.nav-item:hover .nav-icon,.nav-item.active .nav-icon{color:#1677ff}
.sidebar-footer{padding:10px 14px;border-top:1px solid rgba(255,255,255,0.07);font-size:11px;color:rgba(255,255,255,0.3);background:linear-gradient(145deg,#04071a 0%,#0c1a52 100%)}

/* ===== Main Content ===== */
.main-content{margin-left:200px;flex:1;display:flex;flex-direction:column;min-height:100vh;background:#f5f7fa}

/* ===== Topbar ===== */
.topbar{background:#fff;border-bottom:1px solid #e8ecf0;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.topbar-left{display:flex;align-items:center;gap:8px;font-size:13px;color:#8c8c8c}
.topbar-left .sep{color:#d9d9d9}
.topbar-left .current{color:#1a1a2e;font-weight:500}
.topbar-right{display:flex;align-items:center;gap:16px}
.api-key-badge{display:flex;align-items:center;gap:8px;background:#f5f7fa;border:1px solid #e8ecf0;border-radius:6px;padding:5px 12px;font-size:12px;color:#595959}
.api-key-badge .key-label{color:#8c8c8c;font-weight:500}
.api-key-badge .key-value{font-family:monospace;color:#1677ff;font-weight:600}
.balance-chip{display:flex;align-items:center;gap:6px;background:#f6ffed;border:1px solid #b7eb8f;border-radius:6px;padding:5px 12px;font-size:13px;color:#389e0d;font-weight:600}
.user-menu{display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 8px;border-radius:6px;transition:background .15s}
.user-menu:hover{background:#f5f7fa}
.user-avatar{width:32px;height:32px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.user-name{font-size:13px;color:#1a1a2e;font-weight:500}

/* ===== Page Content ===== */
.page{display:none;padding:24px}.page.active{display:block}
.page-header{margin-bottom:20px}
.page-title{font-size:20px;font-weight:600;color:#1a1a2e;display:flex;align-items:center;gap:8px}
.page-title::before{content:'';width:4px;height:22px;background:#1677ff;border-radius:2px;display:inline-block}

/* ===== Cards ===== */
.card{background:#fff;border:1px solid #e8ecf0;border-radius:8px;padding:20px;margin-bottom:16px}
.card-title{font-size:15px;font-weight:600;color:#1a1a2e;margin-bottom:4px}
.card-desc{font-size:13px;color:#8c8c8c;margin-bottom:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}

/* ===== Grid ===== */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}

/* ===== Stat Cards ===== */
.stat-card{background:#fff;border:1px solid #e8ecf0;border-radius:8px;padding:20px;position:relative;overflow:hidden}
.stat-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;border-radius:8px 0 0 8px}
.stat-card.blue::before{background:#1677ff}.stat-card.green::before{background:#52c41a}
.stat-card.red::before{background:#ff4d4f}.stat-card.orange::before{background:#fa8c16}
.stat-card.purple::before{background:#722ed1}
.stat-label{font-size:12px;color:#8c8c8c;margin-bottom:8px;font-weight:500}
.stat-value{font-size:28px;font-weight:700;color:#1a1a2e;line-height:1}
.stat-sub{font-size:12px;color:#8c8c8c;margin-top:6px}

/* ===== Forms ===== */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:500;color:#595959;margin-bottom:6px}
.form-label .req{color:#ff4d4f;margin-left:2px}
.form-input,.form-textarea,.form-select{width:100%;background:#fff;border:1px solid #d9d9d9;border-radius:6px;padding:8px 12px;font-size:14px;color:#1a1a2e;outline:none;transition:all .2s}
.form-input:hover,.form-textarea:hover,.form-select:hover{border-color:#4096ff}
.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:#1677ff;box-shadow:0 0 0 2px rgba(22,119,255,.1)}
.form-textarea{resize:vertical;min-height:120px}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238c8c8c' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
.form-hint{font-size:12px;color:#8c8c8c;margin-top:4px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:14px;font-weight:500;border:none;transition:all .2s;white-space:nowrap;line-height:1.5}
.btn:active{transform:scale(.98)}
.btn-primary{background:#1677ff;color:#fff;border:1px solid #1677ff}
.btn-primary:hover{background:#4096ff;border-color:#4096ff}
.btn-primary:disabled{background:#bae0ff;border-color:#bae0ff;cursor:not-allowed;transform:none}
.btn-success{background:#52c41a;color:#fff;border:1px solid #52c41a}.btn-success:hover{background:#73d13d}
.btn-danger{background:#ff4d4f;color:#fff;border:1px solid #ff4d4f}.btn-danger:hover{background:#ff7875}
.btn-warning{background:#fa8c16;color:#fff;border:1px solid #fa8c16}.btn-warning:hover{background:#ffa940}
.btn-outline{background:#fff;color:#595959;border:1px solid #d9d9d9}.btn-outline:hover{color:#1677ff;border-color:#1677ff}
.btn-ghost{background:transparent;color:#595959;border:1px solid transparent}.btn-ghost:hover{background:#f5f7fa}
.btn-sm{padding:5px 12px;font-size:13px}.btn-lg{padding:10px 20px;font-size:15px}.btn-full{width:100%;justify-content:center}

/* ===== Alerts ===== */
.alert{padding:12px 16px;border-radius:6px;font-size:13px;margin-bottom:12px;display:flex;align-items:flex-start;gap:10px;border:1px solid}
.alert-danger{background:#fff2f0;border-color:#ffccc7;color:#cf1322}
.alert-success{background:#f6ffed;border-color:#b7eb8f;color:#389e0d}
.alert-warning{background:#fffbe6;border-color:#ffe58f;color:#d46b08}
.alert-info{background:#e6f4ff;border-color:#91caff;color:#0958d9}

/* ===== Table ===== */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
thead{background:#fafafa}
th{text-align:left;padding:10px 12px;color:#8c8c8c;font-weight:500;border-bottom:1px solid #e8ecf0;white-space:nowrap}
td{padding:10px 12px;border-bottom:1px solid #f0f0f0;color:#1a1a2e;vertical-align:middle}
tbody tr:hover td{background:#fafcff}

/* ===== Badges ===== */
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:500;border:1px solid}
.badge-green{background:#f6ffed;color:#389e0d;border-color:#b7eb8f}
.badge-red{background:#fff2f0;color:#cf1322;border-color:#ffccc7}
.badge-yellow{background:#fffbe6;color:#d46b08;border-color:#ffe58f}
.badge-blue{background:#e6f4ff;color:#0958d9;border-color:#91caff}
.badge-gray{background:#fafafa;color:#8c8c8c;border-color:#d9d9d9}
.badge-purple{background:#f9f0ff;color:#531dab;border-color:#d3adf7}

/* ===== Slider ===== */
.slider{-webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:2px;background:#e8ecf0;outline:none}
.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:#1677ff;cursor:pointer;border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.2)}

/* ===== Upload Zone ===== */
.upload-zone{border:1px dashed #d9d9d9;border-radius:8px;padding:24px;text-align:center;cursor:pointer;transition:all .2s;color:#8c8c8c;background:#fafafa}
.upload-zone:hover{border-color:#1677ff;color:#1677ff;background:#f0f5ff}
.upload-zone svg{width:32px;height:32px;margin-bottom:8px}

/* ===== Log Viewer ===== */
.log-viewer{max-height:400px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}
.log-item{display:flex;align-items:flex-start;gap:10px;padding:8px 12px;background:#fafafa;border-radius:6px;border:1px solid #f0f0f0;font-size:13px}
.log-item .log-phone{font-weight:600;color:#1a1a2e}.log-item .log-msg{color:#8c8c8c;font-size:12px;margin-top:2px;word-break:break-all}
.log-item .log-status{margin-left:auto;font-size:12px;font-weight:500;white-space:nowrap}
.log-item.sent .log-status{color:#52c41a}.log-item.error .log-status{color:#ff4d4f}

/* ===== Progress ===== */
.progress-wrap{background:#f0f0f0;border-radius:4px;height:6px;overflow:hidden;margin-top:6px}
.progress-bar{height:100%;background:#1677ff;border-radius:4px;transition:width .3s}

/* ===== Spinner ===== */
.spinner{width:16px;height:16px;border:2px solid #e8ecf0;border-top-color:#1677ff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== Toast ===== */
#toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px;max-width:360px}
.toast{padding:12px 16px;border-radius:8px;font-size:13px;display:flex;align-items:center;gap:10px;box-shadow:0 4px 12px rgba(0,0,0,.12);animation:slideIn .2s ease;border:1px solid}
.toast-success{background:#f6ffed;border-color:#b7eb8f;color:#389e0d}
.toast-error{background:#fff2f0;border-color:#ffccc7;color:#cf1322}
.toast-info{background:#e6f4ff;border-color:#91caff;color:#0958d9}
.toast-warning{background:#fffbe6;border-color:#ffe58f;color:#d46b08}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ===== Filter Bar ===== */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.filter-btn{padding:5px 14px;border-radius:20px;font-size:13px;border:1px solid #d9d9d9;background:#fff;color:#595959;cursor:pointer;transition:all .15s}
.filter-btn:hover{border-color:#1677ff;color:#1677ff}.filter-btn.active{background:#1677ff;border-color:#1677ff;color:#fff}

/* ===== Auth Pages ===== */
.auth-page{min-height:100vh;display:flex;background:#fff}
.auth-left{width:480px;min-width:480px;background:linear-gradient(135deg,#1677ff 0%,#0958d9 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px;color:#fff;position:relative;overflow:hidden}
.auth-left::before{content:'';position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:rgba(255,255,255,.05);border-radius:50%}
.auth-left::after{content:'';position:absolute;bottom:-80px;left:-80px;width:300px;height:300px;background:rgba(255,255,255,.05);border-radius:50%}
.auth-left-logo{font-size:28px;font-weight:700;margin-bottom:32px;display:flex;align-items:center;gap:12px;z-index:1}
.auth-left-title{font-size:22px;font-weight:600;margin-bottom:12px;z-index:1}
.auth-left-desc{font-size:14px;opacity:.85;text-align:center;line-height:1.7;z-index:1}
.auth-right{flex:1;display:flex;align-items:center;justify-content:center;padding:48px;background:#fff}
.auth-card{width:100%;max-width:400px}
.auth-title{font-size:28px;font-weight:600;color:#1a1a2e;margin-bottom:8px}
.auth-subtitle{font-size:14px;color:#8c8c8c;margin-bottom:32px}

/* ===== Divider ===== */
.divider{height:1px;background:#f0f0f0;margin:16px 0}

/* ===== Tabs ===== */
.tabs{display:flex;gap:0;border-bottom:1px solid #e8ecf0;margin-bottom:16px}
.tab-btn{padding:10px 16px;font-size:13px;font-weight:500;color:#8c8c8c;border:none;background:none;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .15s}
.tab-btn:hover{color:#1677ff}.tab-btn.active{color:#1677ff;border-bottom-color:#1677ff}
.tab-panel{display:none}.tab-panel.active{display:block}

/* ===== Msg Tabs ===== */
.msg-tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:12px}

/* ===== Responsive ===== */
@media(max-width:768px){
  .sidebar{width:56px;min-width:56px}.sidebar-logo h1,.sidebar-logo span,.nav-item span,.sidebar-section{display:none}
  .main-content{margin-left:56px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .auth-left{display:none}.auth-right{padding:24px}
}