:root{
  --bg:#f4f9ff; --panel:#ffffff; --panel2:#f8fbff; --text:#17304f;
  --muted:#71839b; --primary:#1976d2; --primary2:#45a7ef; --cyan:#35c2c8;
  --border:#dce9f5; --success:#1b9a65; --danger:#df5260;
  --shadow:0 16px 42px rgba(41,91,135,.10); --shadow2:0 7px 22px rgba(41,91,135,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:radial-gradient(circle at 10% 0%,rgba(69,167,239,.12),transparent 25%),
             radial-gradient(circle at 100% 5%,rgba(53,194,200,.09),transparent 24%),
             linear-gradient(180deg,#fbfdff,#f1f7fd);
}
a{color:inherit;text-decoration:none} button,input,select,textarea{font:inherit}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(22px,-16px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(-18px,20px)}}
@keyframes shine{0%{transform:translateX(-130%)}100%{transform:translateX(160%)}}

/* LOGIN */
.login-shell{
  min-height:100vh;position:relative;display:grid;place-items:center;padding:28px;overflow:hidden;
  background:linear-gradient(135deg,#f8fcff,#eef8ff 48%,#f5fbff);
}
.login-shell:before,.login-shell:after{
  content:"";position:absolute;width:430px;height:430px;border-radius:50%;filter:blur(75px);opacity:.28;pointer-events:none
}
.login-shell:before{left:-140px;top:-120px;background:#72c4ff;animation:float1 10s ease-in-out infinite}
.login-shell:after{right:-140px;bottom:-130px;background:#72ddd9;animation:float2 12s ease-in-out infinite}
.login-layout{
  width:min(1050px,100%);min-height:610px;display:grid;grid-template-columns:1.08fr .92fr;
  border:1px solid rgba(191,216,237,.72);border-radius:30px;overflow:hidden;background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px);box-shadow:0 32px 90px rgba(56,111,158,.17);animation:fadeUp .7s ease both;position:relative;z-index:2
}
.login-visual{
  position:relative;overflow:hidden;padding:48px;display:flex;flex-direction:column;justify-content:space-between;
  background:linear-gradient(145deg,#e9f6ff,#f4fbff 55%,#e9fbfa)
}
.login-visual:after{
  content:"";position:absolute;width:290px;height:290px;border-radius:50%;right:-80px;top:65px;
  border:1px solid rgba(25,118,210,.10);box-shadow:0 0 0 38px rgba(25,118,210,.025),0 0 0 76px rgba(53,194,200,.018)
}
.hero-mark,.brand-mark{
  display:grid;place-items:center;color:#fff;font-weight:900;background:linear-gradient(135deg,#1976d2,#42b8df);
  box-shadow:0 13px 30px rgba(25,118,210,.22)
}
.hero-mark{width:66px;height:66px;border-radius:21px;font-size:23px}
.login-visual h2{font-size:42px;line-height:1.04;letter-spacing:-1.4px;margin:25px 0 14px;color:#143b64;max-width:480px}
.login-visual p{color:#64809c;line-height:1.7;max-width:470px}
.login-features{display:grid;gap:11px;margin-top:28px}
.login-feature{display:flex;align-items:center;gap:10px;color:#42637f;font-size:14px}
.login-feature span{width:27px;height:27px;border-radius:9px;display:grid;place-items:center;background:#fff;border:1px solid #d7eaf8;color:#1976d2}
.login-card{
  width:auto!important;border:0!important;border-radius:0!important;background:rgba(255,255,255,.94)!important;
  box-shadow:none!important;padding:52px 47px!important;display:flex;flex-direction:column;justify-content:center
}
.login-card .brand{display:none}.login-title{margin-bottom:28px}
.login-title h1{margin:0 0 8px;font-size:30px;letter-spacing:-.6px;color:#163b61}
.login-title p{margin:0;color:var(--muted);line-height:1.6}
.password-wrap{position:relative}.password-wrap input{padding-right:48px!important}
.password-toggle{position:absolute;right:9px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:0;border-radius:10px;background:#edf6fd;color:#47708f;cursor:pointer}
.login-footer-mini{margin-top:24px;padding-top:18px;border-top:1px solid #e4eef6;text-align:center;color:#7890a6;font-size:12px;line-height:1.7}

/* LAYOUT */
.app-shell{min-height:100vh;display:grid;grid-template-columns:282px minmax(0,1fr)}
.sidebar{
  position:sticky;top:0;height:100vh;padding:22px 16px;overflow-y:auto;z-index:30;
  background:linear-gradient(180deg,#ffffff,#f7fbff);border-right:1px solid #dce9f5;box-shadow:8px 0 30px rgba(57,102,143,.05)
}
.sidebar .brand{display:flex;align-items:center;gap:12px;padding:7px 8px 20px;margin-bottom:14px;border-bottom:1px solid #e3edf6}
.brand-mark{width:48px;height:48px;border-radius:15px}
.brand-logo{width:58px;height:58px;object-fit:contain;flex:0 0 auto;filter:drop-shadow(0 5px 10px rgba(47,128,237,.16))}
.login-brand-logo{width:170px;height:170px;object-fit:contain;display:block;margin:-16px 0 -12px;filter:drop-shadow(0 12px 24px rgba(47,128,237,.16))}
.brand h1{margin:0;font-size:22px;color:#173b61}.brand p{margin:4px 0 0;font-size:12px;color:#8296aa}
.sidebar-profile{margin:14px 4px 18px;padding:13px;border-radius:15px;background:#f3f9fe;border:1px solid #e0edf7}
.sidebar-profile strong{display:block;font-size:13px;color:#244a6b}.sidebar-profile span{color:#8195aa;font-size:12px}
.nav{display:grid;gap:6px}.nav a{display:flex;align-items:center;gap:11px;min-height:46px;padding:11px 12px;border-radius:13px;color:#5e748c;font-weight:700;transition:.18s}
.nav a:hover{color:#176eb9;background:#eef7fe;transform:translateX(2px)}
.nav a.active{color:#146cb8;background:linear-gradient(90deg,#e8f4ff,#effafa);border:1px solid #d6eafa}
.nav-icon{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:#edf6fd;font-size:14px}
.main{min-width:0;padding:28px 30px 0;display:flex;flex-direction:column}
.topbar{
  display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:24px;padding:22px 24px;border-radius:21px;
  background:linear-gradient(135deg,#ffffff,#f3faff);border:1px solid #dce9f5;box-shadow:var(--shadow);animation:fadeUp .45s ease both;position:relative;overflow:hidden
}
.topbar:after{content:"";position:absolute;width:160px;height:160px;border-radius:50%;right:-60px;top:-85px;background:rgba(69,167,239,.08)}
.topbar h2{margin:0;font-size:30px;letter-spacing:-.6px;color:#173b61}.topbar .user{position:relative;z-index:2;padding:10px 13px;border-radius:13px;background:#f2f8fd;border:1px solid #dfeaf4;color:#607890;font-size:13px;text-align:right}
.muted{color:var(--muted)!important}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card{background:#fff;border:1px solid #e0ebf5;border-radius:20px;padding:21px;box-shadow:var(--shadow2);animation:fadeUp .5s ease both;transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9e2f5}
.metric{margin-top:8px;font-size:34px;font-weight:900;letter-spacing:-.8px;color:#1b4d78}
.section-title{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:28px 0 13px}.section-title h3{margin:0;font-size:21px;color:#234767}

/* FORMS */
.field{margin-bottom:15px}.field label{display:block;margin-bottom:7px;font-size:13px;font-weight:800;color:#405d77}
.field input,.field select,.field textarea,.question-body input,.question-body select,.question-body textarea,.section-config input,.section-config select,.section-config textarea,.question-row input,.question-row select,.question-row textarea{
  width:100%;border:1px solid #d9e7f2!important;background:#fff!important;color:#24435f!important;border-radius:13px!important;padding:12px 13px!important;outline:none!important;transition:.18s!important
}
.field input:focus,.field select:focus,.field textarea:focus,.question-row input:focus,.question-row select:focus,.question-row textarea:focus{border-color:#77bdf0!important;box-shadow:0 0 0 4px rgba(69,167,239,.11)!important}
.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.form-action{display:flex;align-items:flex-end}
.btn{position:relative;overflow:hidden;border:0!important;border-radius:13px!important;padding:12px 16px!important;font-weight:850!important;cursor:pointer!important;display:inline-flex!important;align-items:center!important;justify-content:center!important;gap:8px!important;transition:.18s!important}
.btn:hover{transform:translateY(-2px)!important}.btn-primary{color:#fff!important;background:linear-gradient(135deg,#1976d2,#43a9e8)!important;box-shadow:0 11px 24px rgba(25,118,210,.19)!important}
.btn-primary:after{content:"";position:absolute;top:-40%;bottom:-40%;width:45px;background:rgba(255,255,255,.20);transform:translateX(-130%) rotate(18deg)}
.btn-primary:hover:after{animation:shine .7s ease}.btn-secondary,.btn-light{background:#edf5fb!important;color:#315a7c!important;border:1px solid #dbe9f4!important}
.btn-success{background:linear-gradient(135deg,#1a9a66,#39bd8c)!important;color:#fff!important}.btn-danger{background:linear-gradient(135deg,#dc5260,#ef7480)!important;color:#fff!important}.btn-block{width:100%!important}
.alert{border-radius:14px!important;padding:13px 15px!important;margin-bottom:16px!important}.alert-success{background:#edf9f4!important;border:1px solid #cdeede!important;color:#18744e!important}.alert-danger{background:#fff2f3!important;border:1px solid #f5d4d8!important;color:#b74350!important}

/* TABLES */
.table-wrap{overflow:auto;border:1px solid #dfeaf4;border-radius:18px;background:#fff;box-shadow:var(--shadow2)}
table{width:100%;min-width:720px;border-collapse:collapse}th,td{padding:14px 15px;border-bottom:1px solid #eaf0f5;text-align:left}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:#778ba0;background:#f7fbfe}td{font-size:14px;color:#3d5870}tbody tr:hover{background:#f9fcff}
.badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:850}.badge-green{background:#eaf8f1!important;color:#18744e!important}.badge-blue{background:#eaf5ff!important;color:#1976d2!important}.badge-gray{background:#f0f4f7!important;color:#687d90!important}

/* EXAMS */
.exam-builder{gap:18px!important}.section-card,.question-card{background:#fff!important;border:1px solid #deebf5!important;border-radius:20px!important;overflow:hidden!important;box-shadow:var(--shadow2)!important}
.section-head,.question-head{background:linear-gradient(135deg,#f1f8ff,#f0fbfa)!important;border-bottom:1px solid #deebf5!important;padding:18px!important}
.section-badge,.question-number .circle{background:linear-gradient(135deg,#1976d2,#3fb5d8)!important;color:#fff!important}
.block-toolbar{background:#f8fcff!important;border:1px solid #deebf5!important}.block-add-btn{background:#fff!important;color:#3f627f!important;border:1px solid #dce9f4!important;border-radius:13px!important;padding:12px!important}
.block-add-btn:hover{background:#eef8ff!important;border-color:#9fd1f2!important;color:#1976d2!important}.answer-box,.answer-area{background:#f8fcff!important;border:1px dashed #c8deed!important}
.exam-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.exam-card{position:relative;overflow:hidden;min-height:205px}.exam-card:before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,#1976d2,#39c0c6)}
.exam-card h3{font-size:20px;margin:12px 0 8px}.exam-card p{color:var(--muted)}
.exam-page{min-height:100vh!important;padding:24px!important;background:linear-gradient(180deg,#f8fcff,#eff7fd)!important}.exam-wrap{width:min(1040px,100%)!important}
.exam-top{border:1px solid #dbe8f3!important;border-radius:20px!important;padding:18px 20px!important;background:linear-gradient(135deg,#fff,#f0f9ff)!important;color:#173b61!important;box-shadow:var(--shadow)!important}
.exam-title h1{color:#173b61!important}.exam-top .progress-text{color:#74899e!important}.timer-box{color:#176db8!important;background:#eaf5ff!important;border:1px solid #d2e8f8!important;border-radius:12px!important;padding:8px 11px!important}
.exam-section{background:#fff!important;border:1px solid #deebf5!important;border-radius:20px!important;overflow:hidden!important;box-shadow:var(--shadow2)!important}.exam-section-head{background:#f1f8fe!important;border-bottom:1px solid #deebf5!important}
.q-option{background:#fff!important;border:1px solid #dfeaf4!important;border-radius:13px!important}.q-option:hover{background:#f1f9ff!important;border-color:#a8d5f2!important}

/* FOOTER */
.rexam-footer{margin-top:40px;padding:24px 0 28px;border-top:1px solid #dce8f2;text-align:center;color:#7890a6;font-size:13px}.rexam-footer strong{color:#315b7e}
@media(max-width:1080px){.app-shell{grid-template-columns:230px minmax(0,1fr)}.grid{grid-template-columns:repeat(2,1fr)}.exam-list{grid-template-columns:repeat(2,1fr)}.form-grid{grid-template-columns:repeat(2,1fr)}.login-layout{grid-template-columns:1fr}.login-visual{display:none}}
@media(max-width:760px){.app-shell{display:block}.sidebar{position:relative;height:auto;padding:14px}.sidebar-profile{display:none}.nav{display:flex;overflow:auto;gap:8px}.nav a{flex:0 0 auto;white-space:nowrap}.nav-icon{display:none}.main{padding:17px 13px 0}.topbar{flex-direction:column;align-items:flex-start}.grid,.exam-list,.form-grid{grid-template-columns:1fr}.login-card{padding:34px 24px!important}.exam-page{padding:13px!important}}