*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#ffffff;--bg2:#f9fafb;--bg3:#f3f4f6;--bg4:#e5e7eb;
  --border:#e5e7eb;--border2:#d1d5db;
  --text:#111827;--text2:#6b7280;--text3:#9ca3af;
  --accent:#10B981;--accent-bg:rgba(16,185,129,0.08);--accent-hover:#059669;
  --pink:#EC4899;--pink-bg:rgba(236,72,153,0.08);
  --green:#10B981;--green-bg:rgba(16,185,129,0.08);
  --amber:#D97706;--amber-bg:rgba(217,119,6,0.06);
  --red:#EF4444;--red-bg:rgba(239,68,68,0.06);
  --purple:#8B5CF6;--purple-bg:rgba(139,92,246,0.06);
  --radius:10px;--radius-lg:16px;
  --mono:'DM Mono',monospace;
  --shadow-sm:0 1px 2px rgba(0,0,0,0.05);
  --shadow:0 1px 3px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);
}

html,body{height:100%;-webkit-font-smoothing:antialiased}
body{font-family:'DM Sans',sans-serif;background:var(--bg2);color:var(--text);font-size:15px;line-height:1.6}

::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}

h1{font-size:26px;font-weight:600;letter-spacing:-0.02em;color:var(--text)}
h2{font-size:20px;font-weight:600;letter-spacing:-0.01em;color:var(--text)}
h3{font-size:16px;font-weight:500;color:var(--text)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--text2)}
.small{font-size:13px}
.mono{font-family:var(--mono)}

.app{display:flex;min-height:100vh}

.sidebar{width:240px;min-width:240px;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:24px 0;position:sticky;top:0;height:100vh;overflow-y:auto}
.sidebar-logo{padding:0 20px 24px;border-bottom:1px solid var(--border);margin-bottom:16px}
.sidebar-logo .wordmark{font-size:15px;font-weight:600;color:var(--text)}
.sidebar-logo .badge{font-size:11px;font-family:var(--mono);color:var(--text3);background:var(--bg3);padding:2px 7px;border-radius:4px;margin-top:4px;display:inline-block}
.nav-section{padding:0 12px;margin-bottom:8px}
.nav-label{font-size:11px;font-weight:500;color:var(--text3);letter-spacing:0.08em;text-transform:uppercase;padding:0 8px;margin-bottom:4px}
.nav-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;color:var(--text2);font-size:14px;cursor:pointer;transition:all 0.15s;text-decoration:none;border:none;background:none;width:100%;text-align:left;font-family:'DM Sans',sans-serif}
.nav-item:hover{background:var(--bg3);color:var(--text);text-decoration:none}
.nav-item.active{background:var(--accent-bg);color:var(--accent)}
.nav-item svg{width:16px;height:16px;flex-shrink:0;stroke-width:1.8}
.sidebar-footer{margin-top:auto;padding:16px 20px 0;border-top:1px solid var(--border)}

.main{flex:1;overflow-y:auto;min-width:0}
.main-header{padding:28px 36px 0;display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:12px}
.main-header p{color:var(--text2);font-size:14px;margin-top:4px}
.main-content{padding:0 36px 48px}

.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm)}
.card+.card{margin-top:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.card-title{font-size:15px;font-weight:500}

.btn{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;font-family:'DM Sans',sans-serif;cursor:pointer;border:none;transition:all 0.15s;text-decoration:none;white-space:nowrap}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--bg3);color:var(--text)}
.btn-danger{background:var(--red-bg);color:var(--red);border:1px solid rgba(239,68,68,0.15)}
.btn-danger:hover{background:rgba(239,68,68,0.12)}
.btn-ghost{background:transparent;color:var(--text2);padding:6px 10px}
.btn-ghost:hover{color:var(--text);background:var(--bg3)}
.btn-sm{padding:5px 11px;font-size:13px}
.btn svg{width:15px;height:15px;stroke-width:2}

.form-group{margin-bottom:18px}
.form-group:last-child{margin-bottom:0}
label{display:block;font-size:13px;font-weight:500;color:var(--text2);margin-bottom:6px}
input[type=text],input[type=email],input[type=password],input[type=number],textarea,select{width:100%;padding:10px 14px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px;font-family:'DM Sans',sans-serif;transition:border-color 0.15s;outline:none}
input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(16,185,129,0.1)}
textarea{resize:vertical;min-height:90px}
select option{background:var(--bg)}
input::placeholder,textarea::placeholder{color:var(--text3)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.hint{font-size:12px;color:var(--text3);margin-top:5px}

.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:500}
.badge::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor;opacity:0.7}
.badge-green{background:var(--green-bg);color:var(--green)}
.badge-amber{background:var(--amber-bg);color:var(--amber)}
.badge-red{background:var(--red-bg);color:var(--red)}
.badge-blue{background:rgba(59,130,246,0.08);color:#3B82F6}
.badge-purple{background:var(--purple-bg);color:var(--purple)}
.badge-pink{background:var(--pink-bg);color:var(--pink)}
.badge-gray{background:var(--bg3);color:var(--text2)}

.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;animation:fadeIn 0.15s ease}
.modal{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;animation:slideUp 0.2s ease;box-shadow:0 20px 60px rgba(0,0,0,0.15)}
.modal-lg{max-width:780px}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.modal-footer{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}

table{width:100%;border-collapse:collapse}
th{font-size:12px;font-weight:500;color:var(--text3);text-transform:uppercase;letter-spacing:0.06em;padding:10px 16px;text-align:left;border-bottom:1px solid var(--border)}
td{padding:14px 16px;border-bottom:1px solid var(--bg3);font-size:14px;vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg2)}

.divider{height:1px;background:var(--border);margin:20px 0}
.empty-state{text-align:center;padding:48px 20px;color:var(--text2)}
.empty-state svg{width:40px;height:40px;stroke:var(--text3);margin:0 auto 12px;display:block}

#toast{position:fixed;bottom:28px;right:28px;background:var(--bg);border:1px solid var(--border);color:var(--text);padding:12px 18px;border-radius:10px;font-size:14px;z-index:999;transform:translateY(80px);opacity:0;transition:all 0.25s ease;pointer-events:none;box-shadow:var(--shadow)}
#toast.show{transform:translateY(0);opacity:1}
#toast.success{border-color:rgba(16,185,129,0.4)}
#toast.error{border-color:rgba(239,68,68,0.4)}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.login-box{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:40px;width:100%;max-width:420px;box-shadow:0 4px 24px rgba(0,0,0,0.06)}

.msg-thread{display:flex;flex-direction:column;gap:14px}
.msg-bubble{max-width:78%}
.msg-bubble.admin{align-self:flex-end}
.msg-bubble.client{align-self:flex-start}
.msg-text{padding:12px 16px;border-radius:14px;font-size:14px;line-height:1.55}
.msg-bubble.admin .msg-text{background:var(--accent-bg);border:1px solid rgba(16,185,129,0.15);border-bottom-right-radius:4px}
.msg-bubble.client .msg-text{background:var(--bg3);border:1px solid var(--border);border-bottom-left-radius:4px}
.msg-meta{font-size:11px;color:var(--text3);margin-top:4px;padding:0 4px}
.msg-bubble.admin .msg-meta{text-align:right}
.msg-input-row{display:flex;gap:10px;margin-top:16px}
.msg-input-row input{flex:1}

.rev-item{display:flex;gap:14px;align-items:flex-start;padding:16px;border-radius:10px;background:var(--bg);border:1px solid var(--border);margin-bottom:10px;box-shadow:var(--shadow-sm)}
.rev-item:last-child{margin-bottom:0}
.rev-dot{width:8px;height:8px;border-radius:50%;margin-top:7px;flex-shrink:0}
.rev-body{flex:1;min-width:0}
.rev-title{font-size:14px;font-weight:500}
.rev-desc{font-size:13px;color:var(--text2);margin-top:3px}
.rev-foot{display:flex;align-items:center;gap:10px;margin-top:8px;flex-wrap:wrap}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:28px}
.stat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm)}
.stat-val{font-size:28px;font-weight:600;letter-spacing:-0.03em}
.stat-label{font-size:13px;color:var(--text2);margin-top:2px}

.tab-bar{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:24px;overflow-x:auto}
.tab-btn{padding:8px 16px;font-size:14px;font-weight:500;color:var(--text2);background:none;border:none;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:all 0.15s;white-space:nowrap;font-family:'DM Sans',sans-serif;position:relative}
.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-btn:hover:not(.active){color:var(--text)}
.tab-bubble{position:absolute;top:2px;right:4px;width:8px;height:8px;border-radius:50%;background:var(--pink)}

.tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:5px;background:var(--bg3);color:var(--text2);border:1px solid var(--border)}

.revision-form-block{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:12px;position:relative}
.revision-form-block .block-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.revision-form-block .block-num{font-size:12px;font-weight:500;color:var(--text3);font-family:var(--mono)}

.progress-bar{height:6px;background:var(--bg3);border-radius:3px;overflow:hidden;margin-top:4px}
.progress-fill{height:100%;border-radius:3px;background:var(--accent);transition:width 0.3s}
.progress-fill.warn{background:var(--amber)}
.progress-fill.danger{background:var(--red)}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

@media(max-width:768px){
  .sidebar{display:none}
  .main-header,.main-content{padding-left:20px;padding-right:20px}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .main-header{flex-direction:column}
}