*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;background:#f8f9fb;color:#1a1a2e;min-height:100vh;-webkit-font-smoothing:antialiased}
:root{--primary:#0B6E4F;--primary-light:#0d8a63;--accent:#1B98E0;--dark:#0a0f1c;--dark2:#141b2d;--white:#fff;--g50:#fafbfc;--g100:#f1f3f5;--g200:#e4e7eb;--g300:#c8cdd3;--g400:#9ca3af;--g500:#6b7280;--g600:#4b5563;--red:#dc2626;--green:#059669;--yellow:#d97706;--blue:#1B98E0;--r:12px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 12px rgba(0,0,0,.05);--shadow-lg:0 12px 24px rgba(0,0,0,.06);--sidebar-w:250px;--sidebar-bg:#111827;--sidebar-hover:rgba(255,255,255,0.06);--sidebar-active:rgba(59,130,246,0.15);--sidebar-text:rgba(255,255,255,0.7);--sidebar-text-active:#fff;--sidebar-section-text:rgba(255,255,255,0.4)}

/* Login */
.login-screen{display:flex;min-height:100vh;align-items:center;justify-content:center;background:var(--dark)}
.login-box{background:var(--white);border-radius:16px;padding:48px 44px;width:92%;max-width:400px;text-align:center;box-shadow:var(--shadow-lg)}
.login-box .logo-l{font-size:28px;font-weight:800;color:var(--dark);letter-spacing:-1px;margin-bottom:2px}
.login-box .logo-l span{color:var(--primary)}
.login-box .sub-l{font-size:13px;color:var(--g400);margin-bottom:36px;font-weight:500;letter-spacing:.5px;text-transform:uppercase}
.login-box input{width:100%;padding:13px 16px;border:1px solid var(--g200);border-radius:8px;font-size:14px;font-family:inherit;margin-bottom:12px;outline:none;transition:border .2s;color:var(--dark)}
.login-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,110,79,.1)}
.login-box input::placeholder{color:var(--g400)}
.login-box button{width:100%;padding:13px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;letter-spacing:.3px;transition:background .2s}
.login-box button:hover{background:var(--primary-light)}
.login-box .error{color:var(--red);font-size:13px;margin-top:10px;display:none}
.login-box .help{font-size:12px;color:var(--g400);margin-top:20px}.login-box .help a{color:var(--primary);text-decoration:none;font-weight:500}

/* ============================
   APP LAYOUT: Sidebar + Main
   ============================ */
#appScreen{display:flex;min-height:100vh}

/* ============================
   SIDEBAR
   ============================ */
.sidebar{
  width:var(--sidebar-w);
  min-width:var(--sidebar-w);
  background:var(--sidebar-bg);
  display:flex;
  flex-direction:column;
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:100;
  overflow-y:auto;
  overflow-x:hidden;
  transition:transform .25s ease;
}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:2px}

.sidebar-brand{
  padding:18px 20px 14px;
  border-bottom:1px solid rgba(255,255,255,.06);
  flex-shrink:0;
}
.sidebar-logo{
  font-size:20px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.5px;
}
.sidebar-logo span{color:var(--primary)}

/* Sidebar Nav */
.sidebar-nav{
  flex:1;
  padding:8px 0;
  overflow-y:auto;
}

/* Sidebar Items (nav links) */
.sidebar-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 20px;
  color:var(--sidebar-text);
  font-size:13px;
  font-weight:500;
  cursor:pointer;
  text-decoration:none;
  border-left:3px solid transparent;
  transition:all .12s ease;
  position:relative;
}
.sidebar-item:hover{
  background:var(--sidebar-hover);
  color:rgba(255,255,255,.9);
}
.sidebar-item.sidebar-active{
  background:var(--sidebar-active);
  color:var(--sidebar-text-active);
  border-left-color:#3b82f6;
  font-weight:600;
}
.sidebar-icon{
  font-size:15px;
  width:20px;
  text-align:center;
  flex-shrink:0;
}
.sidebar-label{
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.sidebar-badge{
  background:var(--red);
  color:#fff;
  font-size:9px;
  font-weight:700;
  padding:1px 6px;
  border-radius:100px;
  margin-left:auto;
}
.sidebar-item--new .sidebar-label{
  color:#34d399;
}
.sidebar-item--new.sidebar-active .sidebar-label{
  color:var(--sidebar-text-active);
}

/* Sidebar Sections (expandable groups) */
.sidebar-section{
  margin-top:4px;
}
.sidebar-section-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 20px 6px;
  cursor:pointer;
  user-select:none;
}
.sidebar-section-title{
  font-size:10px;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:1.2px;
  color:var(--sidebar-section-text);
  transition:color .12s;
}
.sidebar-section-header:hover .sidebar-section-title{
  color:rgba(255,255,255,.6);
}
.sidebar-chevron{
  color:var(--sidebar-section-text);
  transition:transform .2s ease;
  flex-shrink:0;
}
.sidebar-section.open .sidebar-chevron{
  transform:rotate(90deg);
}
.sidebar-section-items{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.sidebar-section.open .sidebar-section-items{
  max-height:300px;
}

/* Sidebar Bottom Stats */
.sidebar-stats{
  flex-shrink:0;
  padding:16px 20px;
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:auto;
}
.sidebar-stats-title{
  font-size:11px;
  font-weight:600;
  color:var(--sidebar-section-text);
  text-transform:uppercase;
  letter-spacing:.8px;
  margin-bottom:10px;
}
.sidebar-stats-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:4px 0;
}
.sidebar-stats-label{
  font-size:12px;
  color:var(--sidebar-text);
}
.sidebar-stats-value{
  font-size:13px;
  font-weight:700;
  color:var(--sidebar-text-active);
}
.sidebar-stats-value--red{
  color:#f87171;
}

/* Sidebar mobile toggle */
.sidebar-toggle{
  display:none;
  position:fixed;
  top:12px;left:12px;
  z-index:200;
  width:40px;height:40px;
  border:none;
  border-radius:8px;
  background:var(--sidebar-bg);
  color:#fff;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-md);
}
.sidebar-overlay{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.4);
  z-index:90;
}
.sidebar-overlay.active{
  display:block;
}

/* ============================
   APP MAIN (right of sidebar)
   ============================ */
.app-main{
  margin-left:var(--sidebar-w);
  flex:1;
  display:flex;
  flex-direction:column;
  min-height:100vh;
  background:#f8f9fb;
}

/* Header (inside main area) */
.header{
  background:var(--white);
  padding:0 28px;
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--g200);
  position:sticky;
  top:0;
  z-index:50;
  flex-shrink:0;
}
.header-search{
  flex:1;
  max-width:480px;
}
.hdr-right{display:flex;align-items:center;gap:14px}
.hdr-name{color:var(--g600);font-size:12px;font-weight:600}.hdr-logout{color:var(--g400);font-size:11px;cursor:pointer;opacity:.6;transition:opacity .2s}.hdr-logout:hover{opacity:1;color:var(--dark)}

/* Search */
.search-input{width:100%;padding:9px 16px 9px 38px;border:1px solid var(--g200);border-radius:8px;font-size:13px;font-family:inherit;outline:none;background:var(--g50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001q.044.06.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1 1 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0'/%3E%3C/svg%3E") 12px center no-repeat;transition:border .2s}
.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,110,79,.08)}

/* Summary */
.summary{background:var(--white);border-bottom:1px solid var(--g200);padding:20px 28px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;flex-shrink:0}
.summary h1{font-size:18px;font-weight:700;color:var(--dark);letter-spacing:-.3px}
.summary .meta{font-size:12px;color:var(--g400);margin-top:2px;font-weight:400}
.stats{display:flex;gap:32px}
.stat{text-align:right}.stat .val{font-size:20px;font-weight:700;letter-spacing:-.5px}.stat .val.red{color:var(--red)}.stat .val.green{color:var(--green)}.stat .val.blue{color:var(--accent)}
.stat .lbl{font-size:10px;color:var(--g400);font-weight:500;text-transform:uppercase;letter-spacing:.5px;margin-top:1px}

/* Old .tabs class — now hidden (sidebar replaces tabs) */
.tabs{display:none !important}

/* Main */
.main{max-width:1320px;margin:20px auto;padding:0 28px;width:100%}
.tc{display:none}.tc.active{display:block}

/* Tables */
.tbl{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--r);border:1px solid var(--g200);overflow:hidden}
.tbl th{padding:10px 16px;text-align:left;font-size:10px;font-weight:600;color:var(--g400);text-transform:uppercase;letter-spacing:.8px;background:var(--g50);border-bottom:1px solid var(--g200)}
.tbl td{padding:11px 16px;font-size:13px;border-bottom:1px solid var(--g100);color:var(--g600)}
.tbl tr{cursor:pointer;transition:background .1s}.tbl tr:hover td{background:var(--g50)}
.tbl tr:last-child td{border-bottom:none}
.inv-n{font-weight:600;color:var(--accent);font-size:12px;font-family:'SF Mono','Consolas',monospace}

/* Pills */
.pill{padding:3px 10px;border-radius:4px;font-size:10px;font-weight:600;display:inline-block;letter-spacing:.3px;text-transform:uppercase}
.p-paid{background:#ecfdf5;color:#065f46}.p-overdue{background:#fef2f2;color:#991b1b}.p-pending{background:#fefce8;color:#854d0e}.p-sent{background:#eff6ff;color:#1e40af}.p-draft{background:#f3f4f6;color:#6b7280}.p-open{background:#eff6ff;color:#1e40af}

/* KPI */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.kpi{background:var(--white);border-radius:var(--r);border:1px solid var(--g200);padding:16px 18px;box-shadow:var(--shadow)}
.kpi .icon{font-size:20px;margin-bottom:6px;opacity:.8}
.kpi .v{font-size:22px;font-weight:700;letter-spacing:-.5px;color:var(--dark)}.kpi .v.red{color:var(--red)}.kpi .v.green{color:var(--green)}.kpi .v.blue{color:var(--accent)}
.kpi .l{font-size:10px;color:var(--g400);font-weight:500;text-transform:uppercase;letter-spacing:.5px;margin-top:2px}

/* Alert */
.alert{background:#fef2f2;border:1px solid #fecaca;border-radius:var(--r);padding:14px 18px;display:flex;align-items:center;gap:12px;margin-bottom:16px}
.alert-i{font-size:18px}.alert-t h3{font-size:13px;font-weight:600;color:#991b1b}.alert-t p{font-size:12px;color:#b91c1c;margin-top:1px}

/* Buttons */
.btn{padding:9px 18px;border:none;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer;font-family:inherit;letter-spacing:.3px;transition:all .15s}
.btn-g{background:var(--primary);color:#fff}.btn-g:hover{background:var(--primary-light)}
.btn-b{background:var(--accent);color:#fff}

/* Sections */
.sec{background:var(--white);border-radius:var(--r);border:1px solid var(--g200);margin-bottom:16px;box-shadow:var(--shadow)}
.sec-h{padding:12px 16px;border-bottom:1px solid var(--g200);font-size:13px;font-weight:600;color:var(--dark);display:flex;align-items:center;gap:6px}
.sec-b{padding:16px}
.li{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--g100)}.li:last-child{border-bottom:none}

/* Detail */
.detail{display:none}.detail.active{display:block}
.back{font-size:13px;font-weight:600;color:var(--accent);cursor:pointer;margin-bottom:14px;display:inline-flex;align-items:center;gap:4px}.back:hover{text-decoration:underline}
.dh{background:var(--white);border-radius:var(--r);border:1px solid var(--g200);padding:20px;margin-bottom:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;box-shadow:var(--shadow)}
.dh h2{font-size:18px;font-weight:700;letter-spacing:-.3px}.dh .dm{font-size:12px;color:var(--g400);margin-top:3px}
.dh .amt{font-size:26px;font-weight:800;letter-spacing:-1px;text-align:right}.dh .bal{font-size:12px;margin-top:3px}
.dgrid{display:grid;grid-template-columns:1fr 320px;gap:14px}
.doc{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px solid var(--g100);cursor:pointer;font-size:13px}.doc:last-child{border-bottom:none}.doc:hover{background:var(--g50);margin:0 -16px;padding:7px 16px;border-radius:6px}

/* Order */
.order-grid{display:grid;grid-template-columns:1fr 300px;gap:14px;margin-top:14px}

/* Chat */
.chat-btn{position:fixed;bottom:20px;right:20px;z-index:150;width:52px;height:52px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px rgba(11,110,79,.35);font-size:20px;transition:transform .15s}
.chat-btn:hover{transform:scale(1.06)}
.chat-panel{display:none;position:fixed;bottom:82px;right:20px;width:340px;max-height:460px;background:var(--white);border-radius:14px;box-shadow:var(--shadow-lg);overflow:hidden;z-index:151;flex-direction:column;border:1px solid var(--g200)}
.chat-panel.open{display:flex}
.chat-hd{background:var(--primary);padding:14px;display:flex;align-items:center;gap:10px}
.chat-hd div:first-child{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:14px}
.chat-hd .t{color:#fff;font-size:13px;font-weight:600}.chat-hd .s{color:rgba(255,255,255,.6);font-size:10px}
.chat-hd .x{margin-left:auto;color:rgba(255,255,255,.5);cursor:pointer;font-size:14px}
.chat-msgs{flex:1;overflow-y:auto;padding:12px;min-height:180px;max-height:300px;display:flex;flex-direction:column;gap:8px}
.msg{max-width:85%;padding:9px 13px;border-radius:10px;font-size:12px;line-height:1.5}
.msg.bot{background:var(--g100);color:var(--g600);align-self:flex-start;border-bottom-left-radius:3px}
.msg.user{background:var(--primary);color:#fff;align-self:flex-end;border-bottom-right-radius:3px}
.chat-in{display:flex;padding:10px;border-top:1px solid var(--g200);gap:6px}
.chat-in input{flex:1;padding:9px 14px;border:1px solid var(--g200);border-radius:100px;font-size:12px;font-family:inherit;outline:none}
.chat-in button{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:14px;cursor:pointer}

.loading{text-align:center;padding:40px;color:var(--g400);font-size:13px}

/* ============================
   RESPONSIVE
   ============================ */
@media(max-width:1024px){
  .dgrid,.order-grid{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:768px){
  /* Sidebar off-screen on mobile */
  .sidebar{
    transform:translateX(-100%);
    box-shadow:none;
  }
  .sidebar.open{
    transform:translateX(0);
    box-shadow:4px 0 24px rgba(0,0,0,.25);
  }
  .sidebar-toggle{
    display:flex;
  }
  .app-main{
    margin-left:0;
  }
  .header{
    padding-left:56px;
  }
  .summary{flex-direction:column;align-items:flex-start}
  .stats{flex-wrap:wrap;gap:16px}
  .summary,.main{padding-left:16px;padding-right:16px}
  .header{padding-right:16px}
  .kpis{grid-template-columns:1fr 1fr}
}

@media(max-width:480px){
  .kpis{grid-template-columns:1fr}
  .stats{gap:12px}
  .stat .val{font-size:16px}
}