/* Dompet-inspired UI layer for ISP Billing System. Existing PHP/business logic is untouched. */
:root{
 --primary:#5bcfc5;--primary-dark:#217069;--secondary:#709fba;--primary-soft:#eafaf8;
 --success:#39c977;--danger:#f45b69;--warning:#f7b84b;--info:#4aa3df;
 --bg:#f7f8fa;--card-bg:#fff;--sidebar-bg:#fff;--sidebar-text:#4f7086;--text:#3b4a54;
 --text-muted:#8799a8;--border:#e8edf2;--radius:1.25rem;--radius-sm:.75rem;
 --shadow:0 6px 24px rgba(34,56,78,.06);--shadow-lg:0 12px 35px rgba(34,56,78,.10);
 --sidebar-w:270px;
}
body{font-family:Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
.wrapper{display:flex;min-height:100vh}
.sidebar{background:#fff;color:var(--sidebar-text);border-right:1px solid #edf1f4;box-shadow:4px 0 24px rgba(42,62,80,.04)}
.sidebar-brand{padding:22px 20px;border-bottom:1px solid #edf1f4}
.sidebar-brand .logo{color:#253746}
.sidebar-brand .site-name{font-size:17px;color:#253746}.sidebar-brand .site-sub{color:#9aabb8}
.sidebar-nav{padding:16px 14px}.nav-section-title{color:#9aabb8;font-size:10px}
.sidebar-nav a{color:#60788a;border-radius:10px;font-weight:500;margin-bottom:5px;padding:12px 14px}
.sidebar-nav a:hover{background:#f0fbfa;color:#217069}.sidebar-nav a.active{background:rgba(91,207,197,.13);color:#217069;box-shadow:none}
.sidebar-nav a.active::before{left:0;width:3px;height:25px;background:#5bcfc5;box-shadow:none}
.sidebar-footer{border-top:1px solid #edf1f4}.sidebar-footer a{color:#e45d68}.sidebar-footer a:hover{background:#fff1f2;color:#d83d4d}
.main-content{padding:24px 30px;background:#f7f8fa}
.topbar{background:#fff;border:0;border-radius:12px;padding:14px 20px;box-shadow:var(--shadow);top:12px}
.page-title{font-size:18px;color:#253746}.hamburger{color:#4f7086}.hamburger:hover{background:#f0fbfa}
.card,.stat-card,.modal-box,.u-topbar{background:#fff;border:1px solid #edf1f4;box-shadow:var(--shadow);border-radius:14px}
.card-header{background:#fff;border-bottom:1px solid #edf1f4;padding:18px 20px}.card-title{color:#253746;font-size:16px}
.card-body{padding:20px}.table-wrap{border-radius:0 0 14px 14px}.table-wrap table{min-width:700px}
table thead th{background:#fbfcfd;color:#7b8e9d;border-bottom:1px solid #edf1f4;font-weight:600;text-transform:uppercase;font-size:11px;letter-spacing:.35px}
table tbody td{border-bottom:1px solid #f0f3f5;color:#536775}table tbody tr:hover{background:#fbfefe}
.btn{border-radius:8px;font-weight:600;box-shadow:none}.btn-primary{background:#5bcfc5;border-color:#5bcfc5;color:#fff}.btn-primary:hover{background:#38bfb3;border-color:#38bfb3;color:#fff}
.btn-success{background:#39c977;border-color:#39c977}.btn-danger{background:#f45b69;border-color:#f45b69}.btn-warning{background:#f7b84b;border-color:#f7b84b}.btn-outline{border-color:#dbe4ea;color:#60788a;background:#fff}.btn-outline:hover{border-color:#5bcfc5;color:#217069;background:#f0fbfa}
.form-control,.form-select{border:1px solid #dfe7ed;border-radius:8px;min-height:42px;color:#536775;background:#fff}.form-control:focus,.form-select:focus{border-color:#5bcfc5;box-shadow:0 0 0 .2rem rgba(91,207,197,.15)}
.form-label{color:#536775;font-weight:600;font-size:12px}.form-hint{color:#94a4b0}
.badge{border-radius:20px}.stats-grid{gap:18px}.stat-card{padding:20px}.stat-label{color:#899aa7}.stat-value{color:#253746}.stat-icon{border-radius:12px}
.modal-overlay{background:rgba(32,47,60,.55);backdrop-filter:blur(2px)}.modal-box{box-shadow:0 20px 60px rgba(32,47,60,.18)}.modal-header{border-bottom:1px solid #edf1f4}.modal-footer{border-top:1px solid #edf1f4}
.section-head h3{color:#253746}.rev-card,.sbox{border-radius:14px!important;box-shadow:var(--shadow)!important;border:1px solid #edf1f4!important;background:#fff!important}
@media(max-width:991px){.main-content{margin-left:0;padding:18px 16px}.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.sidebar-backdrop.show{display:block}.topbar{top:8px}.table-wrap{overflow-x:auto}}
@media(max-width:576px){.main-content{padding:12px}.topbar{padding:11px 13px}.page-title{font-size:15px}.card-header,.card-body{padding:15px}.stats-grid{grid-template-columns:1fr 1fr}.stat-card{padding:14px 12px}.stat-icon{width:42px;height:42px}.stat-value{font-size:18px}}
.u-wrap{max-width:1180px!important}.u-topbar{padding:14px 20px!important}.u-logo{color:#253746}.profile-hero{box-shadow:var(--shadow)}

/* ===== UX POLISH / RESPONSIVE 2.0 ===== */
html{scroll-behavior:smooth}
body{line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
::selection{background:rgba(91,207,197,.25);color:#183b42}
:focus-visible{outline:3px solid rgba(91,207,197,.28);outline-offset:2px}

/* App shell */
.main-content{width:calc(100% - var(--sidebar-w));min-width:0;transition:width .2s ease,padding .2s ease}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px;position:sticky;z-index:30}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:10px;min-width:0}
.page-title{font-weight:800;letter-spacing:-.25px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.btn-icon{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;border-radius:10px;min-width:40px;height:40px;transition:.18s ease}
.btn-icon:hover{transform:translateY(-1px);box-shadow:0 5px 15px rgba(34,56,78,.08)}

/* Sidebar */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:100;overflow-y:auto;transition:transform .22s ease;scrollbar-width:thin}
.sidebar-brand{position:sticky;top:0;background:#fff;z-index:2}
.sidebar-nav a{display:flex;align-items:center;gap:11px}
.sidebar-nav a .icon{width:22px;text-align:center;flex:0 0 22px;font-size:16px}
.sidebar-footer{position:sticky;bottom:0;background:#fff}
.sidebar-backdrop{display:none!important;position:fixed;inset:0;background:rgba(22,34,44,.42);backdrop-filter:blur(2px);z-index:90}
body:has(.sidebar.open) .sidebar-backdrop{display:block!important}
body:has(.sidebar.open){overflow:hidden}

/* Cards / sections */
.card{overflow:hidden}
.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-title{font-weight:800}
.stat-card{position:relative;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.stat-card:hover,.pkg-card:hover,.rev-card:hover,.section-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)!important}
.stats-grid{align-items:stretch}

/* Toolbars / filters */
form[method="GET"]{align-items:center!important}
form[method="GET"] .btn{min-height:38px}
.form-group{margin-bottom:16px}
.form-control,.form-select{transition:border-color .16s ease,box-shadow .16s ease,background .16s ease}
.form-control::placeholder{color:#a5b2bc}
textarea.form-control{resize:vertical;min-height:90px}

/* Tables */
.table-wrap{width:100%;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
table{width:100%;border-collapse:separate;border-spacing:0}
table thead th{white-space:nowrap;position:sticky;top:0;z-index:1}
table tbody tr{transition:background .12s ease}
table td,table th{vertical-align:middle}
table .btn-xs{white-space:nowrap}
.table-wrap::-webkit-scrollbar{height:8px}.table-wrap::-webkit-scrollbar-thumb{background:#d5e0e6;border-radius:20px}.table-wrap::-webkit-scrollbar-track{background:#f6f8f9}

/* Action groups */
td:last-child .btn,td:last-child form{margin:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:transform .14s ease,box-shadow .14s ease,background .14s ease}
.btn:not(:disabled):hover{transform:translateY(-1px)}
.btn:disabled{opacity:.65;cursor:not-allowed;transform:none}
.btn-xs{min-height:30px;padding:5px 8px;font-size:11px;border-radius:7px}

/* Modal UX */
.modal-overlay{z-index:1000}
.modal{max-height:min(90vh,760px)}
.modal-header{min-height:58px}
.modal-footer{position:sticky;bottom:0;background:var(--card-bg);z-index:2}
body:has(.modal-overlay.active){overflow:hidden}

/* Toasts */
#toast-container{position:fixed;right:20px;bottom:20px;z-index:2000;display:flex;flex-direction:column;gap:10px;max-width:min(390px,calc(100vw - 24px))}
.toast{box-shadow:0 12px 30px rgba(25,43,58,.15)!important;border:1px solid rgba(255,255,255,.7);border-radius:12px!important;padding:12px 15px!important;font-weight:600;animation:toastIn .2s ease}
@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* User-facing pages */
.u-wrap{width:100%;padding-left:16px;padding-right:16px}
.u-topbar{position:sticky;top:10px;z-index:40}
.profile-hero{overflow:hidden}
.section-card{background:#fff;border:1px solid #edf1f4;border-radius:14px;box-shadow:var(--shadow);padding:20px}

/* Login / maintenance */
.auth-card{width:min(100%,480px);border:1px solid #edf1f4!important;box-shadow:0 18px 55px rgba(34,56,78,.10)!important}

/* Better mobile */
@media (max-width:1199px){
  :root{--sidebar-w:250px}
  .main-content{padding:20px;width:calc(100% - var(--sidebar-w))}
}
@media (max-width:991px){
  .sidebar{transform:translateX(-105%);box-shadow:18px 0 45px rgba(28,45,58,.12)}
  .sidebar.open{transform:translateX(0)}
  .main-content{width:100%;padding:16px}
  .topbar{top:8px}
}
@media (max-width:767px){
  .main-content{padding:12px}
  .topbar{padding:11px 12px;margin-bottom:14px;border-radius:11px}
  .topbar-right .btn{min-height:38px}
  .page-title{font-size:15px}
  .card-header{padding:14px 15px}
  .card-body{padding:15px}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:10px}
  .stat-card{padding:14px}
  .stat-label{font-size:11px}
  .stat-value{font-size:19px}
  .form-row{grid-template-columns:1fr!important;gap:0!important}
  .modal-overlay{padding:8px}
  .modal{max-height:94vh;border-radius:14px}
  .modal-body{padding:15px}
  .modal-footer{padding:12px 15px;flex-direction:column-reverse}
  .modal-footer .btn{width:100%}
  #toast-container{right:12px;bottom:12px;left:12px;max-width:none}
  .u-topbar{top:6px;padding:11px 13px!important}
  .u-wrap{padding-left:10px;padding-right:10px}
}
@media (max-width:480px){
  .stats-grid{grid-template-columns:1fr!important}
  .topbar-right .btn{font-size:12px;padding:8px 10px}
  .topbar-right .btn span.hide-xs{display:none}
  .table-wrap table{min-width:680px}
  .card{border-radius:12px}
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}