/* KKG Digital R10 — responsive interface and theme system */
:root {
  --primary:#1769e0;
  --primary-strong:#0d4eb8;
  --primary-soft:#e9f2ff;
  --secondary:#102a43;
  --accent:#38bdf8;
  --ink:#10233a;
  --muted:#62748a;
  --line:#dce6f1;
  --surface:#ffffff;
  --surface-2:#f4f7fb;
  --surface-3:#eaf0f7;
  --soft:var(--surface-2);
  --button:var(--primary);
  --danger:#c83d4f;
  --success:#16845b;
  --warning:#a76a00;
  --shadow-sm:0 1px 2px rgba(15,35,58,.06),0 8px 22px rgba(15,35,58,.05);
  --shadow-lg:0 24px 70px rgba(15,35,58,.14);
  --shadow:var(--shadow-lg);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --sidebar-bg:#0c2340;
  --sidebar-text:#c8d7e8;
  --sidebar-active:rgba(255,255,255,.13);
  --focus:0 0 0 3px color-mix(in srgb,var(--primary) 25%,transparent);
  font-family:Inter,"Segoe UI",Roboto,Arial,sans-serif;
  color-scheme:light;
}

/* R13 administrator, payment, and exam controls */
.admin-source-tabs,.admin-filter-bar,.permission-grid,.payment-status-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.permission-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));margin:10px 0}
.permission-grid label{min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.admin-detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
.exam-packages{margin:12px 0 18px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}
.payment-status-form select,.payment-status-form input{min-width:140px;width:auto}
@media(max-width:700px){
  .responsive-table thead,.admin-table-wrap thead{display:none}.responsive-table,.responsive-table tbody,.responsive-table tr,.responsive-table td,.admin-table-wrap table,.admin-table-wrap tbody,.admin-table-wrap tr,.admin-table-wrap td{display:block;width:100%}
  .responsive-table tr,.admin-table-wrap tr{padding:12px;border-bottom:1px solid var(--line)}.responsive-table td,.admin-table-wrap td{border:0;padding:7px 0;display:grid;grid-template-columns:minmax(96px,35%) 1fr;gap:10px;overflow-wrap:anywhere}
  .responsive-table td:before,.admin-table-wrap td:before{content:attr(data-label);font-weight:700;color:var(--muted)}
  .payment-status-form{grid-column:1/-1}.payment-status-form select,.payment-status-form input,.payment-status-form .btn{width:100%;min-height:44px}
  .admin-filter-bar>*{width:100%}.admin-source-tabs .btn{flex:1}.permission-grid{grid-template-columns:1fr}
}

html[data-color-mode="light"]{--ink:var(--custom-text,#0b1f3a);--surface:var(--custom-card,#fff);--surface-2:var(--custom-background,#f4f7fb);--line:var(--custom-border,#d8e1ec)}
html[data-color-mode="light"] body{background:var(--custom-background,#f4f7fb);color:var(--custom-text,#0b1f3a)}

html[data-theme-name="emerald"]{--primary:#078566;--primary-strong:#05664f;--primary-soft:#e2f8f1;--secondary:#153d35;--accent:#2dd4bf;--sidebar-bg:#0b302a}
html[data-theme-name="violet"]{--primary:#7650d8;--primary-strong:#5735b6;--primary-soft:#f0ebff;--secondary:#302650;--accent:#c084fc;--sidebar-bg:#251d43}
html[data-theme-name="sunset"]{--primary:#e25832;--primary-strong:#b93a1c;--primary-soft:#fff0e9;--secondary:#4a2a2c;--accent:#fb923c;--sidebar-bg:#3c2025}

html[data-color-mode="dark"]{
  --ink:#edf5ff;
  --muted:#9eb0c5;
  --line:#263c54;
  --surface:#101d2b;
  --surface-2:#0b1622;
  --surface-3:#182a3c;
  --primary-soft:color-mix(in srgb,var(--primary) 20%,#101d2b);
  --shadow-sm:0 1px 2px rgba(0,0,0,.18),0 10px 26px rgba(0,0,0,.18);
  --shadow-lg:0 28px 80px rgba(0,0,0,.34);
  color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--surface-2)}
body{margin:0;min-width:320px;background:var(--surface-2);color:var(--ink);font-size:16px;line-height:1.6;text-rendering:optimizeLegibility}
body.dark{background:var(--surface-2);color:var(--ink)}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea{transition:border-color .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease}
a{color:var(--primary)}
img{max-width:100%;height:auto}
:focus-visible{outline:none;box-shadow:var(--focus)}
::selection{background:var(--primary);color:#fff}

.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.narrow{max-width:860px}
.muted{color:var(--muted)!important}
.eyebrow,.kicker,.mini-label{color:var(--primary);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}

/* Controls */
.btn{min-height:44px;border:1px solid transparent;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:var(--on-primary,#fff);padding:.7rem 1rem;font-weight:750;box-shadow:0 8px 20px color-mix(in srgb,var(--primary) 22%,transparent)}
.btn:hover{filter:none;transform:translateY(-1px);box-shadow:0 12px 25px color-mix(in srgb,var(--primary) 28%,transparent);color:var(--on-primary,#fff)}
.btn-sm{min-height:38px;padding:.5rem .8rem}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink);box-shadow:none}
.btn-ghost:hover{background:var(--primary-soft);border-color:color-mix(in srgb,var(--primary) 35%,var(--line));color:var(--primary)}
.btn-light{background:#fff;color:var(--secondary);box-shadow:none}
.btn-wide{width:100%}
label{display:block;margin:0 0 1rem;color:var(--ink);font-size:.9rem;font-weight:700}
input,select,textarea{display:block;width:100%;min-height:44px;margin-top:.42rem;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--ink);padding:.68rem .78rem}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:var(--focus);outline:none}
textarea{min-height:120px;resize:vertical}
input[type="checkbox"],input[type="radio"]{display:inline-block;width:auto;min-height:0;margin:0 .45rem 0 0}

.alert{border:1px solid transparent;border-radius:13px;padding:.85rem 1rem;font-size:.92rem}
.alert-success{background:color-mix(in srgb,var(--success) 13%,var(--surface));border-color:color-mix(in srgb,var(--success) 28%,var(--line));color:var(--success)}
.alert-warning{background:color-mix(in srgb,#f5a524 15%,var(--surface));border-color:color-mix(in srgb,#f5a524 35%,var(--line));color:var(--warning)}
.alert-danger{background:color-mix(in srgb,var(--danger) 12%,var(--surface));border-color:color-mix(in srgb,var(--danger) 30%,var(--line));color:var(--danger)}
.alert-info{background:var(--primary-soft);border-color:color-mix(in srgb,var(--primary) 25%,var(--line));color:var(--primary-strong)}
.badge{border-radius:999px;padding:.35rem .62rem;font-size:.73rem;font-weight:800;background:var(--primary-soft);color:var(--primary-strong)}
.badge.green{background:color-mix(in srgb,var(--success) 14%,var(--surface));color:var(--success)}
.badge.yellow{background:color-mix(in srgb,#f5a524 17%,var(--surface));color:var(--warning)}
.badge.red{background:color-mix(in srgb,var(--danger) 13%,var(--surface));color:var(--danger)}

/* Theme picker */
.theme-picker{position:relative}
.theme-picker>summary{list-style:none;display:flex;align-items:center;gap:.55rem;min-height:40px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);padding:.5rem .72rem;cursor:pointer;font-size:.85rem;font-weight:750}
.theme-picker>summary::-webkit-details-marker{display:none}
.theme-picker-panel{position:absolute;right:0;top:calc(100% + 10px);z-index:80;width:248px;border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:12px;box-shadow:var(--shadow-lg)}
.theme-picker-label{display:block;margin:2px 4px 8px;color:var(--muted);font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.theme-swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:12px}
.theme-swatch{aspect-ratio:1;border:2px solid transparent;border-radius:12px;background:var(--swatch);cursor:pointer}
.theme-swatch[aria-pressed="true"]{border-color:var(--ink);box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--primary)}
.mode-options{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.mode-option{border:1px solid var(--line);border-radius:9px;background:var(--surface-2);color:var(--ink);padding:.42rem .25rem;font-size:.75rem;cursor:pointer}
.mode-option[aria-pressed="true"]{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-strong);font-weight:800}

/* Public website */
.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid color-mix(in srgb,var(--line) 80%,transparent);background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(18px)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:74px;gap:24px}
.brand,.app-brand{display:inline-flex;align-items:center;gap:.7rem;color:var(--ink);font-weight:850;letter-spacing:-.02em;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,var(--primary),var(--accent));color:#fff;font-weight:900;box-shadow:0 8px 18px color-mix(in srgb,var(--primary) 25%,transparent)}
.brand-logo{display:block;max-width:155px;max-height:46px;object-fit:contain}
.main-nav{display:flex;align-items:center;gap:18px;font-size:.9rem}
.main-nav a,.nav-dropdown-toggle{color:var(--ink);font-weight:650}
.main-nav a:hover,.nav-dropdown-toggle:hover{color:var(--primary)}
.nav-toggle{display:none;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink)}
.nav-dropdown{position:relative}
.nav-dropdown-toggle{border:0;background:transparent;padding:.55rem 0;cursor:pointer}
.nav-submenu{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow-lg)}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 85% 5%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 32%),linear-gradient(155deg,var(--surface),var(--surface-2));padding:96px 0}
.hero h1,.page-hero h1{color:var(--ink);font-size:clamp(2.7rem,6vw,5rem);line-height:1.01;letter-spacing:-.055em}
.lead,.page-hero p{color:var(--muted);font-size:1.12rem}
.hero-card,.content-card,.stat-card,.gallery-card,.quote-panel,.verify-result{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm)}
.hero-card{border-color:rgba(255,255,255,.18);background:radial-gradient(circle at 88% 12%,rgba(101,211,255,.34),transparent 34%),linear-gradient(150deg,#0b2340 0%,#124f7d 58%,#0b3556 100%);color:#fff;box-shadow:0 24px 60px rgba(8,30,54,.24)}
.hero-card .mini-label{color:#9fe3ff}
.hero-card h3,.hero-card .hero-stat strong{color:#fff}
.hero-card .hero-stat span{color:#d2eaff}
.content-card,.stat-card,.gallery-card{border-radius:var(--radius)}
.section-soft,.page-hero{background:var(--surface-2)}
.site-footer{background:var(--secondary);color:#c4d2df}
.site-footer .brand{color:#fff}

/* Auth */
.auth-shell{background:radial-gradient(circle at 15% 10%,color-mix(in srgb,var(--primary) 16%,transparent),transparent 30%),var(--surface-2)}
.auth-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-lg)}

/* Admin and member workspace */
.app-shell{min-height:100vh;background:var(--surface-2);display:grid;grid-template-columns:272px minmax(0,1fr)}
.app-sidebar{position:sticky;top:0;width:auto;height:100vh;overflow-y:auto;background:linear-gradient(180deg,var(--sidebar-bg),color-mix(in srgb,var(--sidebar-bg) 84%,#000));color:var(--sidebar-text);padding:20px 14px;scrollbar-width:thin}
.app-sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 8px 16px}
.app-sidebar .app-brand{color:#fff;padding:0;min-width:0}
.app-brand-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar-close{display:none;width:40px;height:40px;border:0;border-radius:10px;background:rgba(255,255,255,.1);color:#fff;font-size:1.3rem}
.side-label{margin:20px 10px 7px;color:color-mix(in srgb,var(--sidebar-text) 62%,transparent);font-size:.69rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}
.side-link{display:flex;align-items:center;gap:10px;min-height:42px;margin:3px 0;border-radius:11px;padding:.62rem .72rem;color:var(--sidebar-text);font-size:.86rem;font-weight:630;text-decoration:none}
.side-link:hover,.side-link.active{background:var(--sidebar-active);color:#fff;transform:translateX(2px)}
.side-icon{display:grid;place-items:center;width:22px;flex:0 0 22px;font-size:1rem}
.app-main{min-width:0}
.app-topbar{position:sticky;top:0;z-index:40;height:74px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(18px);padding:0 clamp(18px,3vw,36px)}
.topbar-left,.topbar-actions,.login-chip{display:flex;align-items:center;gap:12px}
.sidebar-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--ink);font-size:1.25rem}
.breadcrumbs{color:var(--muted);font-size:.78rem;font-weight:700}
.login-chip{color:var(--ink);font-size:.86rem}
.avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,var(--primary),var(--accent));box-shadow:0 6px 15px color-mix(in srgb,var(--primary) 25%,transparent)}
.app-content{width:100%;max-width:1540px;padding:clamp(20px,3vw,38px)}
.app-title{align-items:flex-start;margin-bottom:26px}
.app-title h1{margin:.2rem 0;font-size:clamp(1.8rem,3vw,2.5rem);line-height:1.12;letter-spacing:-.04em}
.back-link{margin-bottom:14px;font-size:.88rem}
.app-card,.app-form,.material-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm)}
.app-card{padding:clamp(18px,2.5vw,26px)}
.app-form{padding:clamp(16px,2.3vw,24px)}
.app-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.app-card .number{color:var(--ink);font-size:clamp(1.8rem,4vw,2.55rem)}
.two-col{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.app-table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);overflow:auto;-webkit-overflow-scrolling:touch}
.app-table{min-width:720px}
.app-table th{position:sticky;top:0;background:var(--surface-2);color:var(--muted);font-size:.73rem}
.app-table td,.app-table th{padding:.9rem 1rem;border-color:var(--line)}
.module-block{border-top:1px solid var(--line)}
.module-row{align-items:flex-start}
.nested-list{margin-left:56px;padding-left:16px;border-left:2px solid var(--line)}
.course-head{background:radial-gradient(circle at 90% 0,color-mix(in srgb,var(--accent) 32%,transparent),transparent 34%),linear-gradient(135deg,var(--secondary),color-mix(in srgb,var(--secondary) 76%,var(--primary)));border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.material-layout{grid-template-columns:minmax(0,1fr) minmax(280px,350px)}
.material-panel{padding:clamp(18px,2.5vw,26px)}
.progress-bar{background:var(--surface-3)}
.empty{border-color:var(--line);background:var(--surface-2)}
.news-list{display:grid;gap:20px}.news-list-item{display:grid;grid-template-columns:minmax(220px,34%) minmax(0,1fr)}.news-list-item .card-cover{height:100%;min-height:210px}.pagination{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:30px}.pagination a{display:grid;min-width:44px;min-height:44px;place-items:center;padding:.55rem .8rem;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font-weight:750;text-decoration:none}.pagination a.active{border-color:var(--primary);background:var(--primary);color:var(--on-primary)}
.sidebar-overlay{display:none}

@media (max-width:1100px){
  .app-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .material-layout{grid-template-columns:1fr}
}

@media (max-width:900px){
  .container{width:min(100% - 30px,1180px)}
  .nav-toggle{display:grid}
  .main-nav{display:none;position:absolute;left:15px;right:15px;top:calc(100% + 8px);max-height:calc(100vh - 100px);overflow:auto;align-items:stretch;gap:6px;border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:14px;box-shadow:var(--shadow-lg)}
  .main-nav.open{display:flex}
  .main-nav .theme-picker>summary{justify-content:center}
  .theme-picker-panel{position:static;width:100%;margin-top:8px;box-shadow:none}
  .nav-dropdown-toggle{display:flex;width:100%;justify-content:space-between;padding:.7rem}
  .nav-submenu{position:static;margin-top:4px;box-shadow:none}
  .app-shell{display:block}
  .app-sidebar{display:block;position:fixed;left:0;top:0;z-index:300;width:min(300px,86vw);max-width:100%;transform:translateX(-105%);transition:transform .25s ease;box-shadow:var(--shadow-lg)}
  body.sidebar-open{overflow:hidden}
  body.sidebar-open .app-sidebar{transform:translateX(0)}
  .sidebar-close,.sidebar-toggle{display:grid;place-items:center}
  .sidebar-overlay{position:fixed;inset:0;z-index:200;border:0;background:rgba(3,12,24,.58);backdrop-filter:blur(3px)}
  body.sidebar-open .sidebar-overlay{display:block}
  .app-topbar{padding:0 16px}
  .login-chip>span:first-child{display:none}
  .breadcrumbs{max-width:44vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .hero{padding:68px 0}
}

@media (max-width:650px){
  html,body{max-width:100%;overflow-x:hidden}
  body{font-size:15px}
  .container{width:min(100% - 24px,1180px)}
  .app-content{padding:18px 14px 30px}
  .app-grid,.two-col,.form-grid,.card-grid,.gallery-grid,.footer-grid{grid-template-columns:1fr}
  .app-title{display:block}
  .app-title>.btn,.app-title>.badge{margin-top:12px}
  .app-card,.app-form,.material-panel{border-radius:14px}
  .app-content>*{min-width:0;max-width:100%}
  .app-actions{display:grid;grid-template-columns:1fr;width:100%}
  .app-actions>.btn,.app-actions>form,.app-actions>form>.btn{width:100%}
  input,select,textarea,.btn,button{min-height:44px}
  input,select,textarea{max-width:100%;font-size:16px}
  .app-table-wrap{max-width:100%;overflow-x:auto}
  .modal,.modal-dialog{max-width:calc(100vw - 24px);margin:12px auto}
  .modal-content{max-height:calc(100dvh - 24px);overflow:auto}
  .nested-list{margin-left:18px;padding-left:10px}
  .module-row{flex-wrap:wrap;gap:12px}
  .module-row>form{width:100%}
  .module-row>form .btn{width:100%}
  .section-head{display:block}
  .hero h1,.page-hero h1{font-size:clamp(2.35rem,12vw,3.7rem)}
  .theme-picker>summary span{display:none}
  .theme-picker-panel{position:fixed;left:12px;right:12px;top:82px;width:auto}
  .news-list-item{grid-template-columns:1fr}.news-list-item .card-cover{min-height:180px}
}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}