:root {
    --ink: #0c0a17;
    --ink-soft: #4b4a57;
    --gray: #6b7280;
    --gray-light: #e5e5e8;
    --bg: #ffffff;
    --success-bg: #dcfce7;
    --success-fg: #166534;
    --error-bg: #fee2e2;
    --error-fg: #991b1b;
    --purple: #5b21b6;
    --purple-dark: #2e1065;
}
* { box-sizing: border-box; }
body {
    font-family: 'Lato', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    margin: 0;
    background: var(--bg);
    color: var(--ink);
}
.topnav {
    background: var(--ink);
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 28px;
}
.topnav .brand {
    display: flex;
    align-items: center;
    margin-right: auto;
}
.topnav .brand img {
    height: 32px;
    display: block;
}
.topnav a {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-size: 13px;
}
.topnav a:hover { color: var(--gray-light); }
.container {
    max-width: 900px;
    margin: 24px auto;
    padding: 0 16px;
}
h1 { margin-top: 0; font-weight: 700; }
h2 { font-weight: 700; }
.card {
    background: #fff;
    border: 1px solid var(--gray-light);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    align-items: end;
}
label {
    display: flex;
    flex-direction: column;
    font-size: 14px;
    font-weight: 700;
    gap: 4px;
}
input, select {
    font-family: inherit;
    font-size: 16px;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    color: var(--ink);
}
input:focus, select:focus {
    outline: none;
    border-color: var(--ink);
}
button {
    font-family: inherit;
    font-size: 15px;
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    background: var(--ink);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
}
button:hover { background: var(--ink-soft); }
button.danger { background: var(--error-fg); }
button.danger:hover { background: #7f1d1d; }
table { width: 100%; border-collapse: collapse; }
th, td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--gray-light);
}
th { color: var(--gray); text-transform: uppercase; font-size: 12px; letter-spacing: 0.04em; }
.actions { display: flex; gap: 12px; align-items: center; }
.scan-panel { display: flex; flex-direction: column; gap: 18px; max-width: 480px; margin: 0 auto; }
.tipo-toggle { display: flex; gap: 20px; font-weight: 500; }
.tipo-option { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; }
#codigo-input { font-size: 24px; padding: 16px; text-align: center; }
.feedback {
    min-height: 60px;
    border-radius: 8px;
    padding: 16px;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
}
.feedback.success { background: var(--success-bg); color: var(--success-fg); }
.feedback.error { background: var(--error-bg); color: var(--error-fg); }
.pendentes td { color: var(--error-fg); font-weight: 700; }
.ok { color: var(--success-fg); font-weight: 700; }

.mode-toggle { display: flex; gap: 8px; }
.mode-btn {
    flex: 1;
    background: #fff;
    color: var(--ink);
    border: 1px solid var(--gray-light);
}
.mode-btn:hover { background: var(--gray-light); }
.mode-btn.active { background: var(--ink); color: #fff; }
.hidden { display: none !important; }
#qr-reader { width: 100%; border-radius: 8px; overflow: hidden; }
.hint { text-align: center; color: var(--gray); font-size: 13px; margin: 8px 0 0; }

.status-panel { max-width: 480px; margin: 0 auto; }
.status-counts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}
.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 4px;
    border-radius: 8px;
    background: #f7f7f8;
}
.stat-num { font-size: 24px; font-weight: 700; }
.stat-label { font-size: 11px; color: var(--gray); text-transform: uppercase; letter-spacing: 0.03em; text-align: center; }
.stat-onibus { background: var(--error-bg); }
.stat-onibus .stat-num { color: var(--error-fg); }
.stat-retornaram { background: var(--success-bg); }
.stat-retornaram .stat-num { color: var(--success-fg); }

body.login-page {
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--purple-dark), var(--purple) 65%, #7c3aed);
    padding: 16px;
}
.login-card {
    background: #fff;
    border-radius: 14px;
    padding: 40px 32px;
    width: 100%;
    max-width: 360px;
    box-shadow: 0 24px 60px rgba(46, 16, 101, 0.45);
    text-align: center;
}
.login-logo { height: 40px; margin-bottom: 24px; }
.login-card h1 { font-size: 20px; margin: 0 0 20px; }
.login-form { display: flex; flex-direction: column; gap: 14px; text-align: left; }
.login-form button { margin-top: 8px; background: var(--purple); }
.login-form button:hover { background: var(--purple-dark); }
.login-error {
    background: var(--error-bg);
    color: var(--error-fg);
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    margin: 0 0 16px;
}

.codigo-row { display: flex; gap: 8px; }
.codigo-row input { flex: 1; }
.scan-btn { white-space: nowrap; background: var(--ink-soft); }
.scan-btn:hover { background: var(--ink); }
#qr-reader-cadastro { max-width: 320px; margin: 0 auto; border-radius: 8px; overflow: hidden; }
#camera-cadastro { max-width: 480px; text-align: center; }
#camera-cadastro .hint { margin-bottom: 12px; }