/* ExamPro — Global Design System
   public/css/app.css
   Supports: dark / light theme, fully responsive
*/
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── THEME TOKENS ── */
[data-theme="dark"] {
  --bg:       #080c1a;
  --bg2:      #0d1225;
  --surface:  #141b2d;
  --surface2: #1a2340;
  --surface3: #1e2a4a;
  --border:   #1e2d4a;
  --border2:  #2a3d66;
  --text:     #e8ecff;
  --text2:    #a0aec0;
  --text3:    #6b7db3;
  --inp:      #1a2340;
  --nav-bg:   rgba(8,12,26,.92);
  --shadow:   0 20px 60px rgba(0,0,0,.45);
  --glow:     rgba(79,110,247,.2);
  --glow-g:   rgba(16,185,129,.15);
}
[data-theme="light"] {
  --bg:       #f4f6ff;
  --bg2:      #eceffe;
  --surface:  #ffffff;
  --surface2: #f0f3ff;
  --surface3: #e8ecfc;
  --border:   #dde3f5;
  --border2:  #c5cef0;
  --text:     #1a1f3a;
  --text2:    #4a5568;
  --text3:    #718096;
  --inp:      #f0f3ff;
  --nav-bg:   rgba(244,246,255,.93);
  --shadow:   0 8px 32px rgba(79,110,247,.1);
  --glow:     rgba(79,110,247,.12);
  --glow-g:   rgba(16,185,129,.1);
}
:root {
  --accent:   #4f6ef7;
  --accent-l: #6b83ff;
  --accent-d: #3d5ae0;
  --green:    #10b981;
  --red:      #ef4444;
  --yellow:   #f59e0b;
  --r1: 6px; --r2: 10px; --r3: 14px; --r4: 20px; --r5: 28px;
  --sb-w: 250px;
}

/* ── RESET ── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:'Inter',system-ui,sans-serif; background:var(--bg); color:var(--text); min-height:100vh; line-height:1.6; transition:background .25s,color .25s; }
a { text-decoration:none; color:inherit; }
img { max-width:100%; }
button, input, select, textarea { font-family:inherit; }

/* ── TYPOGRAPHY ── */
h1 { font-size:clamp(28px,5.5vw,60px); font-weight:900; line-height:1.1; }
h2 { font-size:clamp(22px,4vw,40px); font-weight:800; line-height:1.2; }
h3 { font-size:clamp(17px,2.5vw,24px); font-weight:700; }
h4 { font-size:16px; font-weight:700; }
p  { color:var(--text2); line-height:1.7; }

/* ── LAYOUT ── */
.container    { max-width:1160px; margin:0 auto; padding:0 clamp(16px,4vw,40px); }
.container-sm { max-width:620px;  margin:0 auto; padding:0 clamp(16px,4vw,40px); }
.container-md { max-width:860px;  margin:0 auto; padding:0 clamp(16px,4vw,40px); }
.section    { padding:clamp(48px,8vw,96px) 0; }
.sec-alt    { background:var(--bg2); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.text-center{ text-align:center; }
.flex       { display:flex; }
.flex-center{ display:flex; align-items:center; justify-content:center; }
.flex-between{display:flex; align-items:center; justify-content:space-between; }
.grid-2     { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.grid-3     { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.grid-auto  { display:grid; grid-template-columns:repeat(auto-fit,minmax(270px,1fr)); gap:20px; }
.w-full     { width:100%; }
.gap-8  { gap:8px;  } .gap-12 { gap:12px; } .gap-16 { gap:16px; }
.gap-20 { gap:20px; } .gap-24 { gap:24px; }
.mt-4  { margin-top:4px;  } .mt-8  { margin-top:8px;  } .mt-12 { margin-top:12px; }
.mt-16 { margin-top:16px; } .mt-20 { margin-top:20px; } .mt-24 { margin-top:24px; }
.mb-8  { margin-bottom:8px;  } .mb-16 { margin-bottom:16px; } .mb-24 { margin-bottom:24px; }

/* ── BUTTONS ── */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:10px 20px; border-radius:var(--r2); font-size:14px; font-weight:600; cursor:pointer; border:none; transition:all .2s; white-space:nowrap; text-decoration:none; line-height:1; }
.btn-lg { padding:14px 28px; font-size:16px; border-radius:var(--r3); }
.btn-sm { padding:7px 14px; font-size:13px; border-radius:var(--r1); }
.btn-xs { padding:4px 10px; font-size:11px; border-radius:5px; }
.btn-primary  { background:linear-gradient(135deg,var(--accent),var(--accent-l)); color:#fff; }
.btn-primary:hover  { transform:translateY(-2px); box-shadow:0 8px 24px var(--glow); }
.btn-success  { background:rgba(16,185,129,.12); color:var(--green); border:1px solid rgba(16,185,129,.3); }
.btn-success:hover  { background:rgba(16,185,129,.22); }
.btn-danger   { background:rgba(239,68,68,.1);  color:var(--red);   border:1px solid rgba(239,68,68,.3); }
.btn-danger:hover   { background:rgba(239,68,68,.2); }
.btn-secondary{ background:var(--surface2); color:var(--text); border:1px solid var(--border2); }
.btn-secondary:hover{ border-color:var(--accent); color:var(--accent); }
.btn-ghost    { background:transparent; color:var(--text2); border:1px solid var(--border); }
.btn-ghost:hover    { background:var(--surface2); color:var(--text); }
.btn:disabled { opacity:.5; cursor:not-allowed; transform:none!important; box-shadow:none!important; }

/* ── FORMS ── */
.form-group { margin-bottom:16px; }
.form-label { display:block; font-size:12px; font-weight:600; color:var(--text3); margin-bottom:5px; }
.form-input, .form-select, .form-textarea {
  width:100%; padding:11px 14px;
  background:var(--inp); border:1.5px solid var(--border);
  border-radius:var(--r2); color:var(--text);
  font-size:14px; outline:none;
  transition:border-color .2s, box-shadow .2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color:var(--accent); box-shadow:0 0 0 3px var(--glow); }
.form-input::placeholder { color:var(--text3); }
.form-textarea { min-height:88px; resize:vertical; }
.form-select { appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%236b7db3' d='M5.5 7l4.5 4.5L14.5 7'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 12px center; background-size:18px; padding-right:36px; }
.form-hint  { font-size:11px; color:var(--text3); margin-top:4px; }
.form-error { font-size:12px; color:var(--red); margin-top:4px; }
.input-row  { display:grid; grid-template-columns:1fr 1fr; gap:14px; }

/* ── CARDS ── */
.card { background:var(--surface); border:1px solid var(--border); border-radius:var(--r4); overflow:hidden; }
.card-body { padding:clamp(18px,3vw,28px); }
.card-hdr  { padding:16px 22px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:12px; }
.card-hdr h3 { font-size:15px; font-weight:700; }
.card-ftr  { padding:14px 22px; border-top:1px solid var(--border); }
.card-hover { transition:transform .2s, box-shadow .2s, border-color .2s; }
.card-hover:hover { transform:translateY(-3px); box-shadow:var(--shadow); border-color:var(--border2); }

/* ── TABLES ── */
.table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }
table { width:100%; border-collapse:collapse; min-width:500px; }
thead th { background:var(--surface2); padding:10px 14px; font-size:11px; font-weight:700; color:var(--text3); text-transform:uppercase; letter-spacing:.5px; text-align:left; border-bottom:1px solid var(--border); white-space:nowrap; }
tbody td { padding:12px 14px; border-bottom:1px solid var(--border); font-size:13px; vertical-align:middle; }
tbody tr:last-child td { border-bottom:none; }
tbody tr:hover td { background:var(--surface2); }

/* ── BADGES ── */
.badge { display:inline-flex; align-items:center; gap:4px; padding:3px 10px; border-radius:100px; font-size:11px; font-weight:700; }
.badge-active  { background:rgba(16,185,129,.12); color:var(--green); }
.badge-draft   { background:rgba(107,125,179,.12); color:var(--text3); }
.badge-closed  { background:rgba(239,68,68,.12);   color:var(--red); }
.badge-pass    { background:rgba(16,185,129,.12);   color:var(--green); }
.badge-fail    { background:rgba(239,68,68,.12);    color:var(--red); }
.badge-timeout { background:rgba(245,158,11,.12);   color:var(--yellow); }
.badge-info    { background:rgba(79,110,247,.12);   color:var(--accent); }

/* ── ALERTS ── */
.alert { padding:12px 16px; border-radius:var(--r2); font-size:13px; margin-bottom:16px; border:1px solid; }
.alert-success { background:rgba(16,185,129,.1); border-color:rgba(16,185,129,.35); color:var(--green); }
.alert-error   { background:rgba(239,68,68,.1);  border-color:rgba(239,68,68,.35);  color:var(--red); }
.alert-info    { background:rgba(79,110,247,.1);  border-color:rgba(79,110,247,.35); color:var(--accent); }
.alert-warn    { background:rgba(245,158,11,.1);  border-color:rgba(245,158,11,.35); color:var(--yellow); }

/* ── THEME BUTTON ── */
.theme-btn { width:38px; height:38px; border-radius:var(--r1); border:1.5px solid var(--border); background:var(--surface2); cursor:pointer; font-size:17px; display:flex; align-items:center; justify-content:center; transition:all .2s; color:var(--text); flex-shrink:0; }
.theme-btn:hover { border-color:var(--accent); }

/* ── DIVIDER ── */
.divider { border:none; border-top:1px solid var(--border); margin:20px 0; }
.divider-text { display:flex; align-items:center; gap:12px; color:var(--text3); font-size:13px; margin:20px 0; }
.divider-text::before,.divider-text::after { content:''; flex:1; border-top:1px solid var(--border); }

/* ── STATS ── */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:14px; margin-bottom:24px; }
.stat-card  { background:var(--surface); border:1px solid var(--border); border-radius:var(--r3); padding:18px; }
.stat-icon  { width:42px; height:42px; border-radius:var(--r2); display:flex; align-items:center; justify-content:center; font-size:19px; margin-bottom:10px; }
.stat-val   { font-size:26px; font-weight:900; line-height:1; }
.stat-lbl   { font-size:12px; color:var(--text3); margin-top:3px; }

/* ── AVATAR ── */
.avatar { border-radius:50%; background:linear-gradient(135deg,var(--accent),var(--accent-l)); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; flex-shrink:0; }
.av-xs  { width:24px; height:24px; font-size:10px; }
.av-sm  { width:30px; height:30px; font-size:12px; }
.av-md  { width:38px; height:38px; font-size:15px; }

/* ── TOGGLE SWITCH ── */
.sw { position:relative; display:inline-block; width:42px; height:24px; }
.sw input { opacity:0; width:0; height:0; }
.sw-slider { position:absolute; inset:0; background:var(--border2); border-radius:100px; cursor:pointer; transition:.3s; }
.sw-slider::before { content:''; position:absolute; width:18px; height:18px; border-radius:50%; background:#fff; top:3px; left:3px; transition:.3s; box-shadow:0 1px 4px rgba(0,0,0,.2); }
input:checked + .sw-slider { background:var(--accent); }
input:checked + .sw-slider::before { transform:translateX(18px); }

/* ── ADMIN SIDEBAR LAYOUT ── */
.admin-wrap { display:flex; min-height:100vh; }
.sidebar { width:var(--sb-w); background:var(--surface); border-right:1px solid var(--border); position:fixed; top:0; left:0; bottom:0; z-index:300; display:flex; flex-direction:column; transition:transform .3s ease; }
.sb-logo { padding:18px 16px; border-bottom:1px solid var(--border); display:flex; align-items:center; gap:10px; }
.sb-logo-icon { width:34px; height:34px; border-radius:9px; background:linear-gradient(135deg,var(--accent),var(--accent-l)); display:flex; align-items:center; justify-content:center; font-size:16px; flex-shrink:0; }
.sb-logo-name { font-size:16px; font-weight:800; }
.sb-logo-sub  { font-size:10px; color:var(--text3); }
.sb-nav { flex:1; padding:10px; overflow-y:auto; }
.nav-section { font-size:10px; font-weight:700; color:var(--text3); text-transform:uppercase; letter-spacing:1.5px; padding:12px 8px 4px; }
.nav-item { display:flex; align-items:center; gap:9px; padding:9px 12px; border-radius:var(--r2); color:var(--text2); font-size:13px; font-weight:500; transition:all .15s; margin-bottom:2px; text-decoration:none; cursor:pointer; }
.nav-item:hover { background:var(--surface2); color:var(--text); }
.nav-item.active { background:linear-gradient(135deg,rgba(79,110,247,.14),rgba(79,110,247,.07)); color:var(--accent); font-weight:600; }
.nav-icon { width:18px; text-align:center; font-size:15px; flex-shrink:0; }
.sb-foot { padding:12px; border-top:1px solid var(--border); }
.sb-user { display:flex; align-items:center; gap:10px; margin-bottom:10px; }
.sb-user-name { font-size:13px; font-weight:600; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sb-user-sub  { font-size:11px; color:var(--text3); }
.admin-main  { margin-left:var(--sb-w); flex:1; display:flex; flex-direction:column; min-height:100vh; }
.topbar { height:60px; background:var(--surface); border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; padding:0 clamp(14px,2.5vw,24px); position:sticky; top:0; z-index:200; gap:12px; }
.topbar-left  { display:flex; align-items:center; gap:10px; min-width:0; }
.topbar-right { display:flex; align-items:center; gap:8px; flex-shrink:0; }
.page-title { font-size:16px; font-weight:700; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.page-sub   { font-size:11px; color:var(--text3); }
.back-link  { display:flex; align-items:center; gap:5px; font-size:13px; color:var(--text3); flex-shrink:0; }
.back-link:hover { color:var(--accent); }
.admin-content { padding:clamp(14px,2.5vw,24px); flex:1; }
/* Mobile sidebar overlay */
.sb-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.55); z-index:250; }
.menu-btn { display:none; }

/* ── ANIMATIONS ── */
@keyframes fadeUp   { from{opacity:0;transform:translateY(18px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn   { from{opacity:0} to{opacity:1} }
@keyframes spin     { to{transform:rotate(360deg)} }
@keyframes pulse    { 0%,100%{opacity:1}50%{opacity:.35} }
@keyframes floatOrb { 0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)} }
@keyframes blink    { 0%,100%{opacity:1}50%{opacity:.3} }
.afu  { animation:fadeUp .6s ease both; }
.d1   { animation-delay:.1s; } .d2 { animation-delay:.2s; } .d3 { animation-delay:.3s; }
.reveal { opacity:0; transform:translateY(20px); transition:opacity .55s,transform .55s; }
.reveal.show { opacity:1; transform:translateY(0); }

/* ── RESPONSIVE BREAKPOINTS ── */
@media (max-width:1024px) {
  .grid-3 { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px) {
  .sidebar { transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); }
  .sb-overlay.show { display:block; }
  .admin-main { margin-left:0; }
  .menu-btn { display:flex; }
  .grid-2, .grid-3 { grid-template-columns:1fr; }
  .input-row { grid-template-columns:1fr; }
  .hide-mobile { display:none!important; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:480px) {
  .btn-lg { padding:12px 20px; font-size:15px; }
  .stats-grid { grid-template-columns:1fr 1fr; }
  table { min-width:400px; }
}