@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&display=swap');

:root{
  --navy-950:#060f1f;
  --navy-900:#0a1930;
  --navy-800:#112542;
  --navy-700:#1a3457;
  --navy-600:#254670;
  --amber-500:#e8a33d;
  --amber-400:#f0ba63;
  --amber-200:#f8d9a6;
  --ink-100:#f4f7fc;
  --ink-400:#8ea1c2;
  --ink-500:#6d84a8;
  --danger:#e2726d;
  --radius-md:10px;
  --radius-lg:16px;
  --shadow-card:0 12px 28px -16px rgba(2,8,20,.65);
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(232,163,61,.07), transparent),
    var(--navy-950);
  color:var(--ink-100);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.font-display{font-family:'Space Grotesk',sans-serif;}

/* ===== Public header ===== */
header.topbar{
  background:var(--navy-900);
  border-bottom:1px solid var(--navy-700);
  padding:28px 24px 24px;
}
header.topbar h1{
  margin:0;
  font-size:22px;
  font-weight:700;
  letter-spacing:-.01em;
}
header.topbar p{
  margin:8px 0 0;
  color:var(--ink-400);
  font-size:14px;
}
main{
  max-width:920px;
  margin:0 auto;
  padding:28px 20px 60px;
}
.tabs{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:24px;
}
.tab-btn{
  background:var(--navy-800);
  color:var(--ink-400);
  border:1px solid var(--navy-700);
  padding:9px 20px;
  border-radius:999px;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  font-family:'Space Grotesk',sans-serif;
  transition:.15s ease;
}
.tab-btn:hover{border-color:var(--navy-600);color:var(--ink-100);}
.tab-btn.active{
  background:var(--amber-500);
  color:var(--navy-950);
  border-color:var(--amber-500);
}
.grade-panel{display:none;}
.grade-panel.active{display:block;animation:fade-in .2s ease;}
@keyframes fade-in{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:translateY(0);}}

.meet-card{
  background:var(--navy-800);
  border:1px solid var(--navy-700);
  border-radius:var(--radius-lg);
  padding:18px 22px;
  margin-bottom:12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.meet-info .meet-number{
  color:var(--amber-400);
  font-weight:600;
  font-size:12.5px;
  font-family:'Space Grotesk',sans-serif;
  letter-spacing:.02em;
}
.meet-info .meet-title{
  font-size:17px;
  font-weight:600;
  margin-top:3px;
  color:var(--ink-100);
}
.meet-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.btn-link{
  display:inline-block;
  padding:10px 18px;
  border-radius:var(--radius-md);
  text-decoration:none;
  font-size:13.5px;
  font-weight:600;
  font-family:'Space Grotesk',sans-serif;
  text-align:center;
  transition:.15s ease;
}
.btn-materi{background:var(--amber-500);color:var(--navy-950);}
.btn-materi:hover{background:var(--amber-400);transform:translateY(-1px);}
.btn-tugas{background:transparent;color:var(--ink-100);border:1px solid var(--navy-600);}
.btn-tugas:hover{border-color:var(--amber-500);color:var(--amber-400);}
.btn-disabled{background:var(--navy-700);color:var(--ink-500);cursor:not-allowed;border:1px solid var(--navy-700);}
.btn-referensi{background:transparent;color:var(--amber-400);border:1px dashed var(--navy-600);}
.btn-referensi:hover{border-color:var(--amber-500);background:rgba(232,163,61,.08);}

.empty-state{text-align:center;color:var(--ink-400);padding:48px 16px;font-size:15px;}
footer.foot{text-align:center;color:var(--ink-500);font-size:12.5px;padding:24px;}

/* ===== Admin ===== */
.admin-wrap{max-width:760px;margin:0 auto;padding:28px 20px 60px;}
.card{
  background:var(--navy-800);
  border:1px solid var(--navy-700);
  border-radius:var(--radius-lg);
  padding:26px 26px 22px;
  margin-bottom:22px;
  box-shadow:var(--shadow-card);
}
.card h2{
  margin:0 0 20px;
  font-size:17px;
  font-weight:700;
  color:var(--amber-400);
}

.field-group{margin-bottom:22px;}
.field-group:last-of-type{margin-bottom:0;}
.field-group-label{
  font-family:'Space Grotesk',sans-serif;
  font-size:12.5px;
  font-weight:600;
  color:var(--ink-500);
  padding-left:11px;
  border-left:2px solid var(--amber-500);
  margin-bottom:14px;
}

label{
  display:block;
  font-size:13px;
  color:var(--ink-400);
  margin:0 0 6px;
  font-weight:500;
}
.hint{
  font-size:12px;
  color:var(--ink-500);
  margin-top:6px;
  display:block;
}
input[type=text],input[type=password],input[type=number],select,textarea{
  width:100%;
  padding:11px 14px;
  border-radius:var(--radius-md);
  border:1px solid var(--navy-600);
  background:var(--navy-900);
  color:var(--ink-100);
  font-size:14px;
  font-family:'Inter',sans-serif;
  transition:.15s ease;
}
input::placeholder,textarea::placeholder{color:var(--ink-500);}
input:focus,select:focus,textarea:focus{
  outline:none;
  border-color:var(--amber-500);
  box-shadow:0 0 0 3px rgba(232,163,61,.15);
}
textarea{resize:vertical;line-height:1.5;}
.form-row{display:flex;gap:14px;flex-wrap:wrap;}
.form-row > div{flex:1;min-width:150px;}

button, .btn{
  background:var(--amber-500);
  color:var(--navy-950);
  border:none;
  padding:12px 24px;
  border-radius:var(--radius-md);
  font-weight:700;
  font-family:'Space Grotesk',sans-serif;
  cursor:pointer;
  font-size:14px;
  margin-top:4px;
  transition:.15s ease;
}
button:hover{background:var(--amber-400);transform:translateY(-1px);}
.btn-secondary{background:transparent;border:1px solid var(--navy-600);color:var(--ink-100);}
.btn-secondary:hover{border-color:var(--ink-400);transform:none;}

.form-actions{display:flex;align-items:center;gap:10px;margin-top:22px;padding-top:20px;border-top:1px solid var(--navy-700);}

table.admin-table{width:100%;border-collapse:collapse;margin-top:6px;font-size:13px;}
table.admin-table th, table.admin-table td{padding:11px 8px;border-bottom:1px solid var(--navy-700);text-align:left;vertical-align:top;}
table.admin-table th{color:var(--ink-500);font-weight:600;font-family:'Space Grotesk',sans-serif;font-size:12px;}
table.admin-table a{color:var(--amber-400);text-decoration:none;font-weight:600;}
table.admin-table a:hover{text-decoration:underline;}
table.admin-table a.delete-link{color:var(--danger);}

.alert{
  background:rgba(232,163,61,.1);
  border:1px solid var(--amber-500);
  color:var(--amber-200);
  padding:12px 16px;
  border-radius:var(--radius-md);
  font-size:13.5px;
  margin-bottom:18px;
}
.login-box{
  max-width:340px;
  margin:100px auto;
  background:var(--navy-800);
  border:1px solid var(--navy-700);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  box-shadow:var(--shadow-card);
}
.login-box h1{font-size:16px;text-align:center;margin-bottom:22px;font-weight:700;}
.error-msg{color:var(--danger);font-size:13px;margin-top:10px;}
.topnav{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;}
.topnav a{color:var(--ink-400);font-size:13px;text-decoration:none;}
.topnav a:hover{color:var(--amber-400);}