/* ===== HackerEdu - Painel do Professor ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #0d1117;
    color: #e6edf3;
    padding: 0;
}

/* ---- Tela de login ---- */
.login-box {
    max-width: 360px;
    margin: 8% auto;
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 10px;
    padding: 32px;
    text-align: center;
}
.login-box h1 { color: #00ff41; font-family: 'Courier New', monospace; letter-spacing: 2px; }
.login-box h2 { font-size: 1rem; color: #8b949e; margin: 6px 0 20px; font-weight: normal; }
.login-box label { display: block; text-align: left; margin: 12px 0 4px; font-size: 0.85rem; color: #8b949e; }
.login-box input {
    width: 100%; padding: 10px; border-radius: 6px;
    border: 1px solid #30363d; background: #0d1117; color: #e6edf3;
}
.login-box button {
    width: 100%; margin-top: 20px; padding: 11px;
    background: #238636; color: #fff; border: none; border-radius: 6px;
    font-size: 1rem; cursor: pointer;
}
.login-box button:hover { background: #2ea043; }
.login-box .erro { color: #ff7b72; margin-bottom: 10px; }
.login-box .dica { margin-top: 16px; font-size: 0.75rem; color: #6e7681; }

/* ---- Área logada ---- */
.topo {
    display: flex; justify-content: space-between; align-items: center;
    background: #161b22; padding: 14px 24px; border-bottom: 1px solid #30363d;
}
.logo { font-family: 'Courier New', monospace; font-size: 1.3rem; color: #00ff41; }
.logo span { color: #8b949e; font-size: 0.9rem; }
.topo nav a {
    color: #e6edf3; text-decoration: none; margin-left: 18px; padding: 6px 10px;
    border-radius: 6px; font-size: 0.95rem;
}
.topo nav a:hover { background: #21262d; }
.topo nav a.ativo { background: #238636; color: #fff; }
.topo nav a.sair { color: #ff7b72; }

.flash {
    background: #1f6feb; color: #fff; padding: 12px 24px; margin: 0;
    text-align: center;
}

.cards { display: flex; gap: 16px; padding: 20px 24px; flex-wrap: wrap; }
.card {
    background: #161b22; border: 1px solid #30363d; border-radius: 10px;
    padding: 16px 24px; flex: 1; min-width: 160px; color: #8b949e;
}
.card .num { display: block; font-size: 2rem; color: #00ff41; font-weight: bold; }

main { padding: 0 24px 40px; }
.painel {
    background: #161b22; border: 1px solid #30363d; border-radius: 10px;
    padding: 20px; margin-bottom: 24px;
}
.painel h3 { margin-bottom: 14px; color: #00ff41; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid #21262d; }
th { color: #8b949e; font-weight: 600; }
td input {
    background: #0d1117; border: 1px solid #30363d; color: #e6edf3;
    padding: 5px 7px; border-radius: 5px; width: 100%;
}
.acoes { white-space: nowrap; }
.acoes button, .form-inline button, .form-pontos button, main button {
    background: #238636; color: #fff; border: none; padding: 6px 10px;
    border-radius: 5px; cursor: pointer; font-size: 0.82rem; margin: 2px;
}
.acoes button:hover, main button:hover { background: #2ea043; }
.acoes .danger { background: #da3633; }
.acoes .danger:hover { background: #f85149; }

.form-inline { display: flex; gap: 10px; flex-wrap: wrap; }
.form-inline input {
    background: #0d1117; border: 1px solid #30363d; color: #e6edf3;
    padding: 8px; border-radius: 6px; flex: 1; min-width: 150px;
}
.linha-pontos td { background: #0d1117; }
.form-pontos { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 0.85rem; color: #8b949e; }
.form-pontos input { background: #161b22; border: 1px solid #30363d; color: #e6edf3; padding: 5px; border-radius: 5px; }

td.ok { color: #3fb950; font-weight: bold; }
td.fail { color: #f85149; font-weight: bold; }

@media print {
    .topo, .cards, .flash { display: none; }
    body { background: #fff; color: #000; }
    .painel { border: none; background: #fff; }
    th, td { color: #000; border-color: #ccc; }
}