/* ============================================================
   eMarkah — Sistem Analisis Markah Pelajar
   ============================================================ */
:root{
  --bg:#f1f5fb;
  --card:#ffffff;
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --primary-soft:#eef2ff;
  --accent:#06b6d4;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e2e8f0;
  --green:#059669;
  --red:#dc2626;
  --amber:#d97706;
  --radius:16px;
  --shadow:0 1px 3px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.07);
  --shadow-hover:0 4px 12px rgba(79,70,229,.14),0 12px 32px rgba(15,23,42,.10);
}
*{margin:0;padding:0;box-sizing:border-box;font-family:'Inter',system-ui,sans-serif}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);min-height:100vh;
  background-image:radial-gradient(circle at 90% -10%,rgba(79,70,229,.08),transparent 45%),
                   radial-gradient(circle at -10% 110%,rgba(6,182,212,.07),transparent 40%);}

/* ---------- LAYOUT ---------- */
.app-shell{display:flex;min-height:100vh}
.main-col{flex:1;display:flex;flex-direction:column;min-width:0}
main{flex:1;max-width:1240px;width:100%;margin:0 auto;padding:28px 24px}

/* ---------- SIDEBAR ---------- */
.sidebar{width:240px;background:#fff;border-right:1px solid var(--border);
  padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:50}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 24px;border-bottom:1px solid var(--border);margin-bottom:20px}
.brand-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;font-size:1.35rem;color:#fff;box-shadow:var(--shadow)}
.brand-title{font-weight:800;font-size:1.15rem;background:linear-gradient(90deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.brand-sub{font-size:.72rem;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.side-nav{display:flex;flex-direction:column;gap:6px}
.nav-btn{display:flex;align-items:center;gap:12px;background:none;border:none;text-align:left;
  padding:11px 14px;border-radius:12px;cursor:pointer;font-size:.92rem;font-weight:500;color:var(--muted);transition:.18s}
.nav-btn span{font-size:1.05rem}
.nav-btn:hover{background:var(--primary-soft);color:var(--primary)}
.nav-btn.active{background:linear-gradient(135deg,var(--primary),#6366f1);color:#fff;font-weight:600;
  box-shadow:0 4px 14px rgba(79,70,229,.35)}
.sidebar-foot{margin-top:auto;font-size:.72rem;color:var(--muted);text-align:center;padding-top:16px}
.hamburger{display:none;background:none;border:1px solid var(--border);border-radius:10px;font-size:1.1rem;
  padding:6px 12px;cursor:pointer;color:var(--text)}

/* ---------- TOPBAR ---------- */
.topbar{display:flex;align-items:center;gap:14px;padding:18px 24px;background:rgba(255,255,255,.75);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.topbar h1{font-size:1.25rem;font-weight:800;letter-spacing:-.01em;flex:1}
.topbar-right{display:flex;gap:8px}
.select-inline{padding:9px 14px;border:1px solid var(--border);border-radius:10px;font-size:.85rem;
  background:#fff;color:var(--text);cursor:pointer;transition:.18s}
.select-inline:hover{border-color:var(--primary)}
.select-inline:focus{outline:2px solid var(--primary);outline-offset:-1px}

/* ---------- CARDS ---------- */
.card{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
  margin-bottom:22px;border:1px solid rgba(226,232,240,.7);transition:box-shadow .25s}
.card:hover{box-shadow:var(--shadow-hover)}
.card h2{font-size:1.02rem;font-weight:700;margin-bottom:4px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.head-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.chip{font-size:.72rem;font-weight:600;padding:4px 12px;border-radius:99px;background:var(--primary-soft);color:var(--primary)}
.chip.subtle{background:#f1f5f9;color:var(--muted)}

.slide-up{animation:slideUp .4s ease both}
@keyframes slideUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- STATS ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:22px}
.stat{background:var(--card);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);
  border:1px solid rgba(226,232,240,.7);position:relative;overflow:hidden;transition:transform .2s}
.stat:hover{transform:translateY(-3px)}
.stat::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(var(--primary),var(--accent))}
.stat .icon{font-size:1.3rem;float:right;opacity:.85}
.stat .val{font-size:1.65rem;font-weight:800;color:var(--primary);letter-spacing:-.02em;margin-top:2px}
.stat .lbl{font-size:.78rem;color:var(--muted);font-weight:500;margin-top:2px}

/* ---------- TABLES ---------- */
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--border)}
table.fancy{width:100%;border-collapse:collapse;font-size:.84rem;min-width:720px}
table.fancy th{background:linear-gradient(#f8fafc,#f1f5f9);padding:11px 10px;text-align:left;
  font-weight:700;font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:#334155;
  border-bottom:2px solid var(--border);white-space:nowrap;position:sticky;top:0}
table.fancy td{padding:10px;border-bottom:1px solid #f1f5f9;white-space:nowrap}
table.fancy tbody tr{transition:background .15s}
table.fancy tbody tr:hover{background:var(--primary-soft)}
table.fancy td:first-child,table.fancy th:first-child{padding-left:16px}
.rank-badge{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;
  border-radius:8px;font-weight:700;font-size:.78rem;background:#f1f5f9;color:var(--muted)}
.rank-badge.r1{background:#fef9c3;color:#a16207}
.rank-badge.r2{background:#f1f5f9;color:#475569}
.rank-badge.r3{background:#ffedd5;color:#c2410c}
.avg-cell{font-weight:800;color:var(--primary)}
.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:.72rem;font-weight:700}
.badge.mid{background:#dbeafe;color:#1d4ed8}
.badge.final{background:#dcfce7;color:#15803d}
.badge.trial{background:#fef3c7;color:#b45309}
.grade-pill{font-size:.7rem;font-weight:600;padding:2px 8px;border-radius:8px;margin:1px;display:inline-block}
.gA{background:#dcfce7;color:#15803d}.gB{background:#bfdbfe;color:#1d4ed8}.gC{background:#fef9c3;color:#a16207}
.gD{background:#fed7aa;color:#c2410c}.gE{background:#fecaca;color:#b91c1c}.gF{background:#e2e8f0;color:#334155}
.name-cell{font-weight:600}
.kelas-tag{font-size:.72rem;font-weight:700;background:var(--primary-soft);color:var(--primary);padding:2px 9px;border-radius:8px}
.empty{text-align:center;color:var(--muted);padding:36px !important;font-style:italic}

/* ---------- CHARTS ---------- */
.charts{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.chart-wide{grid-column:1/-1}
@media(max-width:860px){.charts{grid-template-columns:1fr}}

/* ---------- FORMS ---------- */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:14px}
.field label{font-size:.76rem;font-weight:600;color:var(--muted);display:block;margin-bottom:5px;text-transform:uppercase;letter-spacing:.04em}
.field input,.field select,#pwInput,#viewSearch{width:100%;padding:10px 13px;border:1.5px solid var(--border);
  border-radius:10px;font-size:.9rem;transition:.18s;background:#fff;color:var(--text)}
.field input:focus,.field select:focus,#pwInput:focus,#viewSearch:focus{outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(79,70,229,.14)}
.span-2{grid-column:span 2}
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filter-row select{padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:.88rem;cursor:pointer}
#viewSearch{max-width:280px}
.actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hint{font-size:.76rem;color:var(--muted);margin-top:12px}
.muted{color:var(--muted);font-size:.86rem;margin-bottom:14px}

/* ---------- BUTTONS ---------- */
.btn{padding:11px 22px;border:none;border-radius:11px;cursor:pointer;font-size:.88rem;font-weight:600;transition:.18s}
.btn.sm{padding:8px 14px;font-size:.8rem}
.btn-block{width:100%}
.btn-primary{background:linear-gradient(135deg,var(--primary),#6366f1);color:#fff;box-shadow:0 4px 14px rgba(79,70,229,.35)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(79,70,229,.45)}
.btn-outline{background:#fff;border:1.5px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-ghost{background:#f1f5f9;color:var(--muted)}
.btn-ghost:hover{background:#e2e8f0}
.btn-danger{background:#fee2e2;color:var(--red)}
.btn-danger:hover{background:#fecaca}
.del-btn{background:none;border:none;cursor:pointer;font-size:.95rem;padding:3px 5px;border-radius:7px;transition:.15s}
.del-btn:hover{background:#fee2e2}

/* ---------- LOGIN ---------- */
.login-box{max-width:380px;margin:56px auto;text-align:center;padding:36px 30px}
.login-icon{font-size:2.4rem;margin-bottom:10px}
.login-box input{margin-bottom:14px;text-align:center}

/* ---------- MESSAGES ---------- */
.msg{padding:11px 15px;border-radius:10px;margin-top:14px;display:none;font-size:.85rem;font-weight:500}
.msg.ok{display:block;background:#dcfce7;color:#15803d}
.msg.err{display:block;background:#fee2e2;color:#b91c1c}

/* ---------- FOOTER ---------- */
.foot{text-align:center;font-size:.75rem;color:var(--muted);padding:18px}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .sidebar{position:fixed;left:-260px;transition:left .25s ease;box-shadow:0 0 60px rgba(15,23,42,.25)}
  .sidebar.open{left:0}
  .hamburger{display:block}
  main{padding:18px 14px}
  .span-2{grid-column:auto}
  .topbar-right{display:none}
}