* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f0f2f5;
    color: #1a1a2e;
    line-height: 1.5;
}

/* Login */
.login-container {
    max-width: 400px;
    margin: 120px auto;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.1);
    text-align: center;
}
.login-container h1 {
    font-size: 22px;
    margin-bottom: 4px;
}
.subtitle {
    color: #666;
    margin-bottom: 24px;
    font-size: 14px;
}
.error-msg {
    background: #fee;
    color: #c33;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

/* Main container */
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 16px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}
header h1 {
    font-size: 22px;
}

/* Form */
form {
    background: #fff;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    margin-bottom: 24px;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}
.full-width {
    grid-column: 1 / -1;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
    color: #333;
}
.optional {
    font-weight: 400;
    color: #999;
}
.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d0d5dd;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

/* Checkboxes & radios */
.checkbox-group, .id-selector {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.checkbox-label, .radio-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 400;
    font-size: 15px;
    cursor: pointer;
}
.checkbox-label input, .radio-label input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}
.hint {
    display: block;
    color: #888;
    font-size: 12px;
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}
.btn-primary {
    background: #2563eb;
    color: #fff;
}
.btn-primary:hover {
    background: #1d4ed8;
}
.btn-lg {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}
.btn-outline {
    background: transparent;
    border: 1px solid #d0d5dd;
    color: #333;
}
.btn-outline:hover {
    background: #f5f5f5;
}
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}
.btn-danger {
    background: #ef4444;
    color: #fff;
}
.btn-danger:hover {
    background: #dc2626;
}

/* Inspector management */
.inspector-mgmt {
    background: #fff;
    padding: 20px 32px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    margin-bottom: 40px;
}
.inspector-mgmt summary {
    font-weight: 600;
    cursor: pointer;
    color: #555;
    font-size: 14px;
}
.inspector-list {
    margin-top: 16px;
}
.inspector-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    font-size: 14px;
}
.inline-form {
    display: inline;
    background: none;
    padding: 0;
    box-shadow: none;
    margin: 0;
}
.add-inspector-form {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    background: none;
    padding: 0;
    box-shadow: none;
}
.add-inspector-form input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #d0d5dd;
    border-radius: 8px;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    header {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .container {
        margin: 20px auto;
    }
}

/* PDF Preview */
.pdf-preview {
    background: #fff;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    margin-bottom: 24px;
    text-align: center;
}
.pdf-preview h2 {
    font-size: 18px;
    margin-bottom: 16px;
}
.pdf-frame {
    width: 100%;
    height: 85vh;
    border: 1px solid #d0d5dd;
    border-radius: 8px;
}
.form-group input[type="date"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d0d5dd;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.15s;
}
.form-group input[type="date"]:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.unit-info {
    margin-top: 6px;
    padding: 8px 12px;
    background: #e8f4fd;
    border: 1px solid #b6d4fe;
    border-radius: 6px;
    font-size: 13px;
    color: #1a4a7a;
}

.field-error {
    display: block;
    margin-top: 4px;
    padding: 6px 10px;
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: 6px;
    font-size: 13px;
    color: #dc2626;
}